AMERICAN CENTURY PREMIUM RESERVES INC
N-30D, 1997-05-30
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                                 ANNUAL REPORT

                            [american century logo]
                                    American
                                  Century(sm)

                                 March 31, 1997

                                     BENHAM
                                     GROUP

                           Premium Government Reserve
                            Premium Capital Reserve
                                  Premium Bond

[front cover]


                               TABLE OF CONTENTS

Report Highlights........................................... 1
Our Message to You.......................................... 2
Period Overview............................................. 3
Corporate Credit Review..................................... 4
Premium Government Reserve
     Performance & Portfolio Information.................... 5
     Management Q & A....................................... 6
     Schedule of Investments................................ 8
     Financial Highlights...................................26
Premium Capital Reserve
     Performance & Portfolio Information.................... 9
     Management Q & A.......................................10
     Schedule of Investments................................12
     Financial Highlights...................................27
Premium Bond
     Performance & Portfolio Information....................15
     Management Q & A.......................................16
     Schedule of Investments................................19
     Financial Highlights...................................28
Statements of Assets and Liabilities........................21
Statements of Operations....................................22
Statements of Changes in Net Assets.........................23
Notes to Financial Statements...............................24
Report of Independent Auditors..............................29
IRA/403(b) Information......................................30
Background Information
     Investment Philosophy & Policies.......................32
     Comparative Indices....................................32
     Lipper Rankings........................................32
     Portfolio Management Team..............................32
     Credit Research Team...................................32
Glossary....................................................33

American Century  Investments offers you nearly 70 fund choices covering stocks,
bonds, money markets,  specialty investments and blended portfolios. To help you
find the funds that may meet your needs, we have divided  American Century funds
into three groups based on investment style and objectives.  These groups, which
appear below, are designed to help simplify your fund decisions.

                  American Century Investments--Family of Funds

       BENHAM GROUP           AMERICAN CENTURY GROUP     TWENTIETH CENTURY GROUP

    MONEY MARKET FUNDS          ASSET ALLOCATION &
   GOVERNMENT BOND FUNDS        BALANCED FUNDS              U.S. GROWTH FUNDS
  DIVERSIFIED BOND FUNDS   CONSERVATIVE EQUITY FUNDS       INTERNATIONAL FUNDS
   MUNICIPAL BOND FUNDS         SPECIALTY FUNDS

Premium Government Reserve
  Premium Capital Reserve
       Premium Bond


We welcome your comments or questions about this report.  
See the back cover for ways to contact us by mail, phone or e-mail.

Twentieth  Century and the Benham Group are registered marks of American Century
Services Corporation and Benham Management Corporation,  respectively.  American
Century is a service mark of American Century Services Corporation.


                                                    American Century Investments


                               REPORT HIGHLIGHTS

Period Overview

o    The U.S.  economy  expanded  much  faster than  expected  during the twelve
     months ended March 31, 1997.  Despite  strong  economic  growth,  inflation
     remained tame.

o    The Fed  raised  short-term  interest  rates in late  March in an effort to
     pre-empt inflation going forward.

o    Changing  expectations  of Fed  policy  caused  bond  yields  to  fluctuate
     throughout the period.

o    Mortgage-backed  securities were the best-performing  fixed-income  sector,
     while  corporate  debt  outperformed  both Treasury and  government  agency
     securities.

Corporate Credit Review

o    A strong  U.S.  economy  led to  improved  corporate  credit  during  1996.
     According  to  bond-rater  Moody's  Investors  Service,   corporate  credit
     upgrades outpaced downgrades by 283 to 184 in 1996.

o    Despite the  generally  positive  credit  outlook,  many  "sub-prime"  auto
     lenders--so  called  because they make loans to borrowers  with poor credit
     histories--defaulted on debt payments or suffered credit rating downgrades.

Premium Government Reserve

o    For the fiscal year ended March 31, 1997, the fund returned 5.07%, compared
     with the 5.08% average return of its peers.

o    We maintained about 10% to 15% of the portfolio in  floating-rate  notes to
     try to improve the fund's ability to capture rising interest rates.

o    Going  forward,  we  expect  strong  economic  growth  and  low  levels  of
     unemployment may cause interest rates to trend higher.

Premium Capital Reserve

o    For the fiscal year ended March 31, 1997, the fund matched the 5.13% return
     of its peer group average.

o    Some money market funds were hit by defaults and rating  downgrades on debt
     issued  by  sub-prime  auto  lenders,   but  Premium  Capital  Reserve  was
     unaffected  because  these risky  issuers  failed to meet our strict credit
     criteria.

o    Going  forward,  we  expect  strong  economic  growth  and  low  levels  of
     unemployment may cause interest rates to trend higher.

Premium Bond

o    For the fiscal year ended March 31, 1997, the fund returned 4.57%, compared
     with the 4.23% average return of its peers.

o    With bond prices trading in a range throughout the period,  we maintained a
     defensive posture, keeping the fund's duration at or below neutral.

o    Rather than try to guess the Fed's interest rate  intentions,  we'll take a
     conservative  approach to managing the fund's duration and average maturity
     going forward.

                               Premium Government

                      Total Returns:           AS OF 3/31/97
                         6 Months                     2.50%*
                         1 Year                        5.07%
                      7-Day Current Yield:             5.02%
                      Net Assets:              $38.8 million
                         (AS OF 3/31/97)
                      Inception Date:                 4/1/93
                      Ticker Symbol:                   TWPXX


                                Premium Capital

                      Total Returns:           AS OF 3/31/97
                         6 Months                     2.52%*
                         1 Year                        5.13%
                      7-Day Current Yield:             4.95%
                      Net Assets:               $154 million
                         (AS OF 3/31/97)
                      Inception Date:                 4/1/93
                      Ticker Symbol:                   TCRXX


                                  Premium Bond

                      Total Returns:           AS OF 3/31/97
                         6 Months                     2.48%*
                         1 Year                        4.57%
                      Net Assets:              $21.7 million
                         (AS OF 3/31/97)
                      Inception Date:                 4/1/93
                      Ticker Symbol:                     N/A

                      * Not annualized.


Annual Report                                             Report Highlights    1


                               OUR MESSAGE TO YOU

[photo of James E. Stowers III and James M. Benham]

March 31,  1997,  marked the end of an  eventful  year for our  company  and the
Benham Premium  Reserve funds.  Over the past twelve months,  money market rates
fluctuated sharply in response to changing interest rate  expectations.  In U.S.
bond markets,  mortgage-backed and corporate securities produced strong returns,
outperforming  Treasury and government agency bonds. In the following pages, our
investment  management team provides further details about these markets and how
your fund was managed during the year.

In January,  nearly two years of integration  between  Twentieth Century and The
Benham  Group   culminated  when  we  began  serving  you  as  American  Century
Investments.  Under this new name,  we have  combined our offerings of nearly 70
funds.

The new name also introduces three new groupings for the funds--the Benham Group
(money market and bond funds),  the American  Century  Group (asset  allocation,
balanced,  conservative  equity and specialty  funds) and the Twentieth  Century
Group (growth and  international  equity funds).  The Premium Reserve funds have
moved to the Benham Group because their investment goals match key attributes of
that group.

In  reviewing  this report,  you may notice some  changes.  Based on  investors'
feedback,  our  shareholder  reports have been  redesigned  with added features,
including a one-page report  summary,  a glossary,  more charts and graphs,  and
expanded  management Q & A and  background  information  sections.  By June, all
American Century shareholder reports will have been converted to this format.

We appreciate your confidence in American Century and look forward to continuing
to serve you.

Sincerely,

/s/James E. Stowers III                     /s/James M. Benham
James E. Stowers III                        James M. Benham
President and Chief Executive Officer       Vice Chairman
American Century Companies                  American Century Companies


2    Our Message to You                             American Century Investments


                                PERIOD OVERVIEW

U.S. Economy

The U.S. economy expanded by 4.1% during the twelve months ended March 31, 1997.
Strong  employment and income growth coupled with the highest levels of consumer
confidence in six years helped the economy grow at a 4.7% annual rate during the
second quarter of 1996. While the pace of growth slowed to 2.1% during the third
quarter,  the economy came back in the fourth quarter to expand at a 3.8% annual
rate. According to the government's initial estimate,  the economy expanded at a
much-stronger-than-expected 5.6% annual rate during the first quarter of 1997.

Despite strong economic growth,  inflation remained tame in 1996 and early 1997.
During the twelve  months ended March 1997,  consumer  prices rose by just 2.8%.
Though wages rose during the period,  overall  labor costs were kept in check by
lower  health  care and  benefit  costs.  A stronger  dollar  also  helped  keep
inflation at bay by making imported goods less expensive for U.S.
consumers.

Although  inflation  was  modest,  the U.S.  Federal  Reserve  (the Fed)  raised
short-term  interest  rates  in  March  1997 in an  effort  to  pre-empt  higher
inflation going forward.  While we believe that the Fed may raise rates further,
we don't  expect  rates  to move  sharply  higher.  "Real"  short-term  interest
rates--stated  rates  minus the rate of  inflation--are  already at levels  that
would typically inhibit economic growth.

U.S. Bond Market

Changing  expectations  of Fed  interest  rate  policy  caused  bond  yields  to
fluctuate  sharply  between  April 1996 and March 1997.  Rates  edged  decidedly
higher over the last half of the period because of surging  economic  growth and
critical  comments on inflation by ranking Fed  officials.  As a result,  yields
finished the period about 20-70 basis points (a basis point equals 0.01%) higher
across the maturity spectrum.

At the short end of the yield curve,  three-month Treasury bill (T-bill) yields,
which tend to reflect market  participants'  future  expectations for short-term
interest rates, traded in a range between 4.92% and 5.40%. Overall, the yield on
the  three-month  T-bill rose from 5.13% at the beginning of the period to 5.32%
on March 31.

Treasury notes and bonds produced modest returns during the year ended March 31.
Because of rising interest rates,  securities  with shorter  maturities--  which
usually  suffer less price  depreciation  when  interest  rates  rise--performed
better than  longer-term  securities.  For example,  the two-year  Treasury note
posted a 5.65% return for the year,  while the 30-year  Treasury  bond  returned
1.65%.  The yield on the 30-year  Treasury bond, which fell to a low of 6.35% in
December, closed the period at 7.10%.

Mortgage-backed  securities were the best-performing  fixed-income sector during
the  one-year  period.   Corporate  securities  also  produced  strong  returns,
outperforming Treasury and government agency securities. Strong demand for these
securities caused yield spreads (the difference in yield between mortgage-backed
or corporate securities and Treasurys) to tighten to historically low levels.

[line graph - data below]

TREASURY YIELD CURVES

Years to Maturity       3/31/96          3/31/97
1                        5.376            5.997
2                        5.752            6.411
3                        5.884            6.562
4                        6.02             6.650
5                        6.078            6.748
6                        6.179            6.799
7                        6.28             6.850
8                     6.29433333          6.868
9                     6.30866667          6.887
10                       6.323            6.905
11                      6.3744            6.935
12                      6.4258            6.965
13                      6.4772            6.995
14                      6.5286            7.025
15                       6.58             7.055
16                       6.632            7.084
17                       6.684            7.113
18                       6.736            7.142
19                       6.788            7.171
20                       6.84             7.200
21                       6.823            7.190
22                       6.806            7.180
23                       6.789            7.170
24                       6.772            7.160
25                       6.755            7.150
26                      6.7378            7.139
27                      6.7206            7.128
28                      6.7034            7.117
29                      6.6862            7.106
30                       6.669            7.095

Source: Bloomberg Financial Markets


Annual Report                                               Period Overview    3


                            CORPORATE CREDIT REVIEW

A strong U.S.  economy led to improved  corporate credit  conditions  during the
twelve months ended March 31, 1997. Steady corporate earnings growth contributed
to a record number of corporate credit rating upgrades. According to bond-rating
agency Moody's Investors  Service,  upgrades outpaced  downgrades during 1996 by
283 to 184, a ratio of 3 to 2.

Specific  industries  benefiting  from the  upgrade  trend  included  industrial
companies,  most recently in the airline sector. In the financial sector,  banks
continued  a credit  upgrade  trend that  began a few years ago,  while a rising
stock market and heavy initial public offering activity translated into upgrades
for brokerage firms.

Nevertheless, we continue to monitor a few negative credit trends evident during
the period.  Two problem areas  highlight  how our  proactive  and  conservative
approach to credit analysis helps limit the funds' credit risk.

So far in 1997,  several  "sub-prime" auto lenders--so  called because they make
loans to borrowers with poor credit  histories--have  defaulted on debt payments
or experienced credit rating downgrades.

The difficulties experienced by sub-prime lenders (which struck some mutual fund
companies)  illustrate the importance of our conservative credit criteria.  Take
sub-prime  lender Mercury Finance,  which defaulted on its debt payments,  as an
example.  Mercury's direct debt issues were considered "tier 1" according to SEC
standards. The SEC defines a "tier 1" security as an issue that has received the
highest possible  short-term  rating from two independent  rating agencies.  Our
standards for  considering  a security for purchase are much tougher.  Mercury's
debt failed to clear even the first hurdle in our internal rating process.

Another  development  we're  watching  closely is the ongoing  Japanese  banking
crisis.  Japanese banks have suffered since 1990,  when  speculative  bubbles in
both the  Japanese  real  estate and stock  markets  burst.  Japan's  economy is
recovering  slowly,  while  its  real  estate  and  stock  markets  continue  to
deteriorate. We expect many Japanese banks to report significant losses from bad
real estate loans,  falling equity positions and sluggish loan activity when the
Japanese fiscal year ends March 31.

To prop up the banking system, the Japanese  government  announced it would back
the 20 largest  Japanese  banks.  We've pared down that list of 20 to only those
banks  that can  function  independently.  In  practice,  that means the list of
Japanese  banks with which we'll do business is much shorter than the list of 20
that others find acceptable. Our corporate money market and bond funds currently
have no Japanese bank exposure.

[line graph - data below]

IMPROVING CORPORATE CREDIT QUALITY

              Downgrades             Upgrades
'87               189                   102
'88               237                   138
'89               339                   138
'90               433                   98
'91               350                   119
'92               227                   136
'93               154                   163
'94               160                   183
'95               221                   205
'96               184                   283

Source: Moody's Investors Service


4    Corporate Credit Review                        American Century Investments

<TABLE>
<CAPTION>
                           PREMIUM GOVERNMENT RESERVE

                                                                                AVERAGE ANNUAL RETURNS
                                                          6 MONTHS       1 YEAR         3 YEARS    LIFE OF FUND
TOTAL RETURNS AS OF MARCH 31, 1997
<S>                                                         <C>           <C>            <C>           <C>  
Premium Government Reserve ..............................   2.50%         5.07%          5.06%         4.48%
90-Day Treasury Bill Index ..............................   2.54%         5.15%          5.18%         4.66%
Average Institutional U.S. Government
Money Market Fund(1) ....................................   2.51%         5.08%          5.06%         4.53%(2)
Fund's Ranking Among Institutional U.S. Government
Money Market Funds(1) ...................................    --       46 out of 79   32 out of 59  35 out of 51

(1) According to Lipper Analytical Services.
(2) Returns  since  4/30/93,  the date  nearest the fund's  inception  for which
    return data are available. Inception date was April 1, 1993.

See pages 32-33 for more information  about returns,  the comparative  index and
Lipper fund rankings.
</TABLE>


YIELDS AS OF MARCH 31, 1997
                                  7-DAY            7-DAY
                                 CURRENT         EFFECTIVE
                                  YIELD            YIELD

Premium Government Reserve        5.02%            5.15%


Yields are defined in the Glossary on page 33.


PORTFOLIO AT A GLANCE
                                 3/31/97          3/31/96
Number of Securities               29               27
Weighted Average Maturity        40 days          55 days
Expense Ratio                     0.45%            0.44%

Money market funds are neither insured nor guaranteed by the U.S. government.

Yields will fluctuate,  and there can be no assurance that the fund will be able
to maintain a stable $1.00 share price.


                 Many of the investment terms in this report are
                       defined in the Glossary on page 33.


Annual Report                                    Premium Government Reserve    5


                           PREMIUM GOVERNMENT RESERVE

Management Q & A

An interview with Bob Gahagan,  a vice president and senior portfolio manager on
the Premium Reserve funds management team.

HOW DID THE FUND PERFORM?

The fund  performed  in line with its peer group  average.  For the fiscal  year
ended March 31, 1997, the fund returned  5.07%,  compared with the 5.08% average
return of the 79 "Institutional  U.S.  Government Money Market Funds" tracked by
Lipper  Analytical  Services.  (See the Total Returns table on the previous page
for other fund performance comparisons.)

HOW WAS THE FUND POSITIONED DURING THE PERIOD?

Though  money  market  yields,  as measured  by the  three-month  Treasury  bill
(T-bill),  traded in a range between  4.92% and 5.40%,  yields  actually  closed
March 1997 near where they began the period.  The  fluctuation  of money  market
rates was a direct result of the market's  uncertainty  over Fed monetary policy
(see  page  3).  As a  result  of  this  uncertainty,  we  positioned  the  fund
defensively,  keeping its average  maturity  slightly  shorter  than its neutral
range of 40-45 days for the  majority of the period.  However,  we extended  the
fund's  average  maturity  slightly  in November  and  December  because  slower
economic growth and better-than-expected numbers on inflation reduced the chance
of a Fed interest rate increase.

Nevertheless,  we again  shortened the fund's  average  maturity  because strong
first-quarter  economic  growth  increased the  likelihood of a short-term  rate
hike. A shorter  average  maturity allows the fund to better capture the rise in
rates by reinvesting its maturing assets more quickly.

YOU  MAINTAINED  ABOUT 10% TO 15% OF THE FUND'S  ASSETS IN  FLOATING-RATE  NOTES
(FLOATERS) DURING THE PERIOD. WHY?

We believe holding  floaters is a good way to improve the fund's  responsiveness
to changing  interest rates.  Floaters reflect changes in interest rates quickly
because their interest rates reset on a periodic basis.  Most of the floaters we
hold reset weekly off of the three- or six-month  T-bill rate.  T-bill  floaters
are especially  attractive in a rising interest rate environment  because three-
and six-month T-bill rates tend to quickly reflect market  participants'  future
expectations for the level of interest rates.

[pie charts]

PORTFOLIO COMPOSITION BY SECURITY TYPE (as of 3/31/97)
U.S. Government Agency
  Discount Notes 75%
U.S. Government Agency
  Floating-Rate Notes 11%
U.S. Government
  Agency Notes 11%
Repurchase Agreements 3%

PORTFOLIO COMPOSITION BY SECURITY TYPE (as of 9/30/96)
U.S. Government Agency
  Discount Notes 67%
U.S. Government
  Agency Notes 17%
U.S. Government Agency
  Floating-Rate Notes 16%


6    Premium Government Reserve                     American Century Investments


                           PREMIUM GOVERNMENT RESERVE

WHAT'S YOUR OUTLOOK FOR MONEY MARKET RATES GOING FORWARD?

High levels of consumer confidence,  rising employment and wage growth argue for
continued solid economic expansion going forward.  Until the economy shows signs
of slowing,  there will be upward pressure on interest  rates.  As a result,  we
expect the trend toward higher rates to continue in the months ahead.

WITH  THAT  OUTLOOK  IN MIND,  HOW WILL YOU  MANAGE  THE FUND  OVER THE NEXT SIX
MONTHS?

We'll  likely keep the fund's  average  maturity  relatively  short,  so that if
interest  rates  continue to rise, the fund will be positioned to capture rising
yields.  We also plan to increase the fund's  holdings of  floating-rate  notes,
which  will also help the  fund's  yield  reflect  rising  interest  rates  more
quickly.

[pie charts]

PORTFOLIO COMPOSITION BY MATURITY (as of 3/31/97)
1-30 Days 55%
31-60 Days 15%
61-90 Days 21%
91-180 Days 8%
181-397 Days 1%

PORTFOLIO COMPOSITION BY MATURITY (as of 9/30/96)
1-30 Days 61%
31-60 Days 18%
61-90 Days 14%
91-180 Days 7%


Annual Report                                    Premium Government Reserve    7


                            SCHEDULE OF INVESTMENTS
                           PREMIUM GOVERNMENT RESERVE

MARCH 31, 1997

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

U.S. GOVERNMENT AGENCY DISCOUNT NOTES(1)
$  930,000    FFCB, 5.55%, 4/1/97                            $     930,000
 3,200,000    FHLB, 5.45%, 4/10/97                               3,195,831
 1,400,000    FHLB, 5.42%, 4/17/97                               1,396,696
   500,000    FHLB, 5.58%, 11/21/97                                482,775
 3,000,000    FHLMC, 5.45%, 4/4/97 through
                4/9/97                                           2,997,249
 8,843,000    FHLMC, 5.47%, 4/29/97 through
                6/5/97                                           8,777,711
 1,500,000    FHLMC, 5.52%, 6/25/97                              1,480,450
 9,000,000    FNMA, 5.44%, 4/15/97 through
                6/3/97                                           8,952,925
                                                                 ---------
TOTAL U.S. GOVERNMENT AGENCY
DISCOUNT NOTES--74.7%                                           28,213,637
                                                                ----------
OTHER U.S. GOVERNMENT AGENCY SECURITIES(1)
 1,000,000    FFCB, 5.34%, 7/1/97                                  999,310
 1,000,000    FFCB, VRN, 5.60%, 4/1/97,
                RESETS WEEKLY OFF THE 6-MONTH
                T-BILL RATE PLUS 0.05% WITH NO
                CAPS, FINAL MATURITY 6/13/97                     1,000,000
 1,000,000    FHLB, 5.79%, 5/23/97                               1,001,663
 1,000,000    FHLB, 6.22%, 6/27/97                               1,001,844
   250,000    FHLB, 7.61%, 7/3/97                                  251,294
 1,000,000    FHLB, VRN, 5.67%, 4/1/97,
                resets daily off the Fed Funds
                rate plus 0.15% with no caps,
                final maturity 8/1/97                            1,000,000
 2,000,000    FHLMC, 5.375%, 6/30/97                             1,999,825
 1,500,000    FNMA, VRN, 5.61%, 4/1/97,
                resets weekly off the 3-month
                T-Bill rate plus 0.20% with no
                caps, final maturity 8/22/97                     1,499,718
 1,000,000    SLMA, VRN, 5.59%, 4/1/97,
                resets weekly off the 3-month
                T-Bill rate plus 0.18% with no
                caps, final maturity 11/10/97                      999,708
TOTAL OTHER U.S. GOVERNMENT                                      ---------
AGENCY SECURITIES--22.4%                                         9,753,362
                                                                 ---------

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

TEMPORARY CASH INVESTMENTS--2.9%
Repurchase Agreement, Morgan (J.P.) & Co. Inc.,
  (U.S. Treasury obligations), in a joint trading
  account at 6.20%, dated 3/31/97,
  due 4/1/97 (Delivery value $1,128,194)                         $ 1,128,000
                                                                 -----------
TOTAL INVESTMENT SECURITIES--100.0%                              $39,094,999
                                                                 ===========
Notes To Schedule of Investments
FFCB = Federal Farm Credit Bank
FHLB = Federal Home Loan Bank
FHLMC = Federal Home Loan Mortgage Corporation
FNMA = Federal National Mortgage Association
resets = The frequency  with which a  fixed-income  security's  coupon  changes,
     based  on  current  market  conditions  or an  underlying  index.  The more
     frequently a security resets, the less risk the investor is taking that the
     coupon will vary significantly from current market rates.
SLMA = Student Loan Marketing Association
VRN  =  Variable  Rate  Note.  Interest  reset  date is  indicated  and  used in
     calculating  the  weighted  average  portfolio  maturity.   Rate  shown  is
     effective March 31, 1997.
(1)  The  rates  for U.S.  Government  Agency  Discount  Notes  are the yield to
     maturity  at March 31,  1997.  The rates for other U.S.  Government  Agency
     securities are the stated coupon rates.

See Notes to Financial Statements


8    Premium Government Reserve                     American Century Investments

<TABLE>
<CAPTION>
                            PREMIUM CAPITAL RESERVE

                                                                                AVERAGE ANNUAL RETURNS
                                                          6 MONTHS       1 YEAR         3 YEARS    LIFE OF FUND
TOTAL RETURNS AS OF MARCH 31, 1997
<S>                                                         <C>           <C>            <C>           <C>  
Premium Capital Reserve .................................   2.52%         5.13%          5.12%         4.54%
90-Day Treasury Bill Index ..............................   2.54%         5.15%          5.18%         4.66%
Average Institutional
Money Market Fund(1) ....................................   2.53%         5.13%          5.12%         4.63%(2)
Fund's Ranking Among Institutional
Money Market Funds(1) ...................................    --       87 out of 163  71 out of 124 62 out of 96

(1)  According to Lipper Analytical Services.

(2)  Returns  since  4/30/93,  the date nearest the fund's  inception  for which
     return data are available. Inception date was April 1, 1993.

See pages 32-33 for more information  about returns,  the comparative  index and
Lipper fund rankings.
</TABLE>

YIELDS AS OF MARCH 31, 1997
                                  7-DAY            7-DAY
                                 CURRENT         EFFECTIVE
                                  YIELD            YIELD

Premium Capital Reserve           4.95%            5.07%

Yields are defined in the Glossary on page 33.


PORTFOLIO AT A GLANCE
                                 3/31/97          3/31/96
Number of Securities               51               34
Weighted Average Maturity        46 days          49 days
Expense Ratio                     0.45%            0.45%

Money market funds are neither  insured nor  guaranteed by the U.S.  government.
Yields will fluctuate,  and there can be no assurance that the fund will be able
to maintain a stable $1.00 share price.

                 Many of the investment terms in this report are
                       defined in the Glossary on page 33.


Annual Report                                       Premium Capital Reserve    9


                            PREMIUM CAPITAL RESERVE

Management Q & A

An interview with Bob Gahagan,  a vice president and senior portfolio manager on
the Premium Reserve funds management team.

HOW DID THE FUND PERFORM?

The fund's  performance  was consistent  with that of its peers.  For the fiscal
year ended March 31, 1997, the fund returned 5.13%,  matching the average return
of the 163  "Institutional  Money  Market  Funds"  tracked by Lipper  Analytical
Services.  (See the Total  Returns  table on the  previous  page for other  fund
performance comparisons.)

HOW WAS THE FUND POSITIONED DURING THE PERIOD?

Though  money  market  yields,  as measured  by the  three-month  Treasury  bill
(T-bill),  traded in a range between  4.92% and 5.40%,  yields  actually  closed
March 1997 near where they began the period.  The  fluctuation  of money  market
rates was a direct result of the market's  uncertainty  over Fed monetary policy
(see page 3).  Concern  that the Fed might raise rates led us to keep the fund's
average maturity near its neutral range of 40-45 days. A shorter, more defensive
average  maturity  allows the fund to better capture rising rates by reinvesting
its maturing assets more quickly.

SOME MONEY MARKET FUNDS WERE HIT IN EARLY 1997 BY DEFAULTS AND RATING DOWNGRADES
ON DEBT  ISSUED  BY SOME OF THE MORE  AGGRESSIVE  AUTO  LOAN  COMPANIES,  CALLED
"SUB-PRIME LENDERS." DID THE FUND HOLD ANY OF THESE SECURITIES?

No. The consistent,  disciplined application of our conservative credit criteria
is one reason we weren't  affected by the defaults and downgrades  that hit some
of our  competitors.  We simply  don't want to  increase  our credit  risk for a
slightly higher yield.  We rely on our high credit  standards to narrow down the
list of debt  issuers  to those we feel are the  most  creditworthy.  From  that
exclusive list, we do our homework to uncover the best yield and return stories.

WHAT ARE ASSET-BACKED SECURITIES AND WHY HAVE YOU INCLUDED THEM IN THE FUND?

Asset-backed  securities are debt securities that represent  ownership in a pool
of assets.  Auto loans and credit cards are good  examples of types of debt that
are  commonly  packaged  as  asset-backed  securities.  Asset-backed  securities
generally  have very high credit  quality  because  they  usually  carry  credit
enhancements,   such  as  bond   insurance.   The   securities  are  also  often
overcollateralized,  which  means the  security  contains  more  assets than are

[pie charts]

PORTFOLIO COMPOSITION BY SECURITY TYPE (as of 3/31/97)
Commercial Paper 83%
Floating-Rate Notes 7%
Asset-Backed Securities 5%
U.S. Government Agency
Floating-Rate Notes 3%
CDs 2%

PORTFOLIO COMPOSITION BY SECURITY TYPE (as of 9/30/96)
Commercial Paper 82%
U.S. Government Agency
Floating-Rate Notes 10%
Floating-Rate Notes 6%
CDs 2%


10   Premium Capital Reserve                        American Century Investments


                            PREMIUM CAPITAL RESERVE

required to pay off the debt. Another  attraction of asset-backed  securities is
that they typically have higher yields than commercial paper and CDs. Consistent
with our conservative  approach to managing credit risk, we've added specialists
in asset-backed securities to our corporate credit research staff.

WHAT'S YOUR OUTLOOK FOR MONEY MARKET RATES GOING FORWARD?

High levels of consumer  confidence,  rising  employment and wage growth seem to
argue for continued solid economic growth going forward. Until the economy shows
signs of slowing,  there will be upward pressure on interest rates. As a result,
we expect the trend toward higher rates to continue in the months ahead.

WITH  THAT  OUTLOOK  IN MIND,  HOW WILL YOU  MANAGE  THE FUND  OVER THE NEXT SIX
MONTHS?

Going forward,  we'll likely shorten the fund's average maturity and maintain or
even increase the fund's  holdings of  floating-rate  notes.  If interest  rates
continue to rise, the fund will be well positioned to capture rising yields.  We
also  expect to  continue  to work  closely  with our credit  research  staff to
uncover value in the asset-backed securities market.

[pie charts]

PORTFOLIO COMPOSITION BY CREDIT RATING (as of 3/31/97)
A1+ 70%
A1 25%
A2 3%
Unrated U.S. Government
Agency Securities 2%

PORTFOLIO COMPOSITION BY CREDIT RATING (as of 9/30/96)
A1+ 76%
A1 18%
Unrated U.S. Government
Agency Securities 6%


Annual Report                                       Premium Capital Reserve   11


                            SCHEDULE OF INVESTMENTS
                            PREMIUM CAPITAL RESERVE

MARCH 31, 1997

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

COMMERCIAL PAPER(1)
AUTOMOBILES & AUTO PARTS--0.7%
$ 1,000,000   PACCAR Financial Corp., 5.83%,
                4/4/97                                         $    999,550
                                                                -----------
BANKING--18.1%
  6,000,000   Abbey National North, 5.59%,
                4/23/97                                           5,980,677
  4,000,000   Bil North America, Inc., 5.52%,
                5/21/97                                           3,970,778
  4,000,000   Cosco (Cayman) Company, 5.65%,
                4/17/97                                           3,990,489
  5,000,000   Galicia Funding, 5.52%, 6/3/97                      4,952,969
  4,000,000   Generale Bank, Inc., 5.52%,
                6/3/97                                            3,962,480
  4,500,000   Morgan (J.P.) & Co. Inc., 5.53%,
                7/9/97                                            4,433,422
                                                                 ----------
                                                                 27,290,815
                                                                 ----------
CHEMICALS & RESINS--3.6%
  5,400,000   Bayer AG, 5.52%, 5/12/97
                (Acquired 2/21/97, Cost
                $5,336,880)(2)                                    5,367,651
                                                                  ---------
COMMUNICATIONS SERVICES--2.0%
  3,000,000   Ameritech Corp., 5.54%, 4/28/97                     2,988,097
                                                                  ---------
COMPUTER SYSTEMS--2.1%
  3,300,000   Hitachi Credit Corp., 5.52%,
                5/1/97 through 6/25/97                            3,267,719
                                                                  ---------
DIVERSIFIED COMPANIES--2.8%
  4,300,000   Mitsubishi International,
                5.52%-5.53%,
                4/29/97 through 6/13/97                           4,268,471
                                                                  ---------
EDUCATION--2.8%
  4,300,000   Leland Stanford, 5.52%-5.76%,
                4/9/97 through 5/22/97                            4,286,778
                                                                  ---------
ELECTRICAL & ELECTRONIC
COMPONENTS--2.1%
  3,200,000   Panasonic Finance Inc., 5.52%,
                6/9/97 (Acquired 3/10/97,
                Cost $3,156,805)(2)                               3,167,248
                                                                  ---------

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

FINANCIAL SERVICES--17.3%
$ 5,000,000   BT Securities Corporation, 5.67%,
                4/15/97                                        $  4,989,500
  7,081,000   Bass Finance (C.I.) Ltd.,
                5.52%-5.53%,
                4/29/97 through 5/6/97                            7,048,213
  2,400,000   General Electric Capital Corp.,
                6.75%, 4/1/97                                     2,400,000
  4,600,000   General Motors Acceptance Corp.,
                5.52%-5.55%,
                5/15/97 through 8/4/97                            4,539,445
  3,000,000   Hitachi Credit America Corp.,
                5.76%, 4/9/97                                     2,996,420
  4,100,000   Mobil Australia Finance, 5.67%,
                4/15/97 (Acquired 3/14/97,
                Cost $4,080,612)(2)                               4,091,517
                                                                 ----------
                                                                 26,065,095
FOOD & BEVERAGE--2.6%                                            ----------
  4,000,000   Brown-Forman Corp., 5.83%,
                4/4/97                                            3,998,133
INSURANCE--6.7%                                                   ---------
  2,110,000   Metlife Funding Inc., 5.52%,
                5/19/97                                           2,095,202
  5,000,000   SAFECO Credit Co. Inc., 5.73%,
                4/11/97                                           4,992,570
    800,000   St. Paul Companies, Inc. (The),
                6.75%, 4/1/97 (Acquired
                3/27/97, Cost $799,344)(2)                          800,000
  2,200,000   USAA Capital Corp., 5.60%,
                4/22/97                                           2,193,186
                                                                 ----------
                                                                 10,080,958
METALS & MINING--5.2%                                            ----------
  2,000,000   RTZ America Inc., 5.52%, 6/9/97                     1,979,223
  6,000,000   U.S. Borax & Chemical Corp.,
                5.52%, 5/28/97                                    5,950,030
                                                                  ---------
                                                                  7,929,253
PAPER & PUBLISHING--4.3%                                          ---------
  6,500,000   Weyerhaeuser Co., 5.52%,
                5/14/97                                           6,458,696
PETROLEUM REFINING--1.5%                                          ---------
  2,300,000   Chevron Transport, 5.60%,
                4/22/97                                           2,292,836
See Notes to Financial Statements                                 ---------


12   Premium Capital Reserve                        American Century Investments


                            SCHEDULE OF INVESTMENTS
                            PREMIUM CAPITAL RESERVE

MARCH 31, 1997

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

SECURITY BROKERS & DEALERS--3.9%
$ 6,000,000   Morgan Stanley Group Inc., 5.52%,
                5/16/97 through 5/23/97                     $     5,958,197
SOVEREIGN GOVERNMENTS                                            ----------
& AGENCIES--2.0%
  3,000,000   Canadian Wheat Board, 5.52%,
                5/14/97                                           2,981,044
UTILITIES (ELECTRIC)--3.2%                                       ----------
  4,800,000   National Rural Utilities Cooperative
                Finance Corp., 5.53%-5.77%,
                4/8/97 through 4/29/97                            4,788,162
MISCELLANEOUS--1.7%                                              ----------
  2,500,000   Clorox Co., 5.65%, 4/17/97                          2,494,280
                                                                 ----------
TOTAL COMMERCIAL PAPER--82.6%                                   124,682,983
                                                                -----------
ASSET-BACKED SECURITIES(3)
  1,331,137   Ford Motor Credit Co. Auto Lease
                Trust, Series 1996-1, Cl A1,
                5.45%, 11/15/97                                   1,331,053
  1,274,122   Ford Motor Credit Co. Auto Owner
                Trust, Series 1996-B, Cl A1,
                5.51%, 10/15/97                                   1,274,275
  2,887,674   TMS Auto Grantor Trust, Series
                1996-2, Cl A1, 5.51%,
                1/15/98                                           2,887,674
  2,000,000   WFS Financial Owner Trust, Series
                1997-A, Cl A1, 5.63%, 3/20/98                     2,000,000
                                                                 ----------
TOTAL ASSET-BACKED SECURITIES--5.0%                               7,493,002
                                                                 ----------
CERTIFICATES OF DEPOSIT--2.0%(1)
  3,000,000   ABN Amro Bank Canada, 5.68%,
                4/14/97                                           2,994,164
                                                                 ----------

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

OTHER CORPORATE DEBT
$ 2,500,000   American Express Centurion, VRN,
                5.50%, 4/23/97, resets
                monthly off the 1-month LIBOR
                minus 0.03% with no caps, final
                maturity 12/23/97                            $    2,500,000
  1,800,000   First Bank N.A., Minneapolis, VRN,
                5.62%, 4/16/97, resets
                monthly off the 1-month LIBOR
                minus 0.04% with no caps, final
                maturity 11/19/97                                 1,800,000
  4,500,000   General American Life, VRN,
                5.58%,  4/1/97,  resets 
                monthly off the 1-month LIBOR 
                plus 0.20% with no caps, final 
                maturity 1/6/98 (Acquired
                1/3/97, Cost $4,500,000)(4)                       4,500,000
  2,000,000   PNC Bank Corp., VRN, 5.34%,
                4/15/97, resets monthly off the
                1-month LIBOR minus 0.10%
                with no caps, final maturity
                5/15/97                                           1,999,843
                                                                 ----------
TOTAL OTHER CORPORATE DEBT--7.1%                                 10,799,843
                                                                 ----------
U.S. GOVERNMENT AGENCY SECURITIES
 2,000,000    FHLB, VRN, 5.67%, 4/1/97,
                resets daily off the Fed Funds
                rate plus 0.15% with no caps,
                final maturity 8/1/97                             2,000,000
  3,000,000   FNMA, VRN, 5.53%, 4/1/97,
                resets daily off the Fed Funds
                rate plus 0.01% with no caps,
                final maturity 5/5/97                             2,999,758
TOTAL U.S. GOVERNMENT                                            ----------
AGENCY SECURITIES--3.3%                                           4,999,758
                                                               ------------
TOTAL INVESTMENT SECURITIES--100.0%                            $150,969,750
                                                               ============
See Notes to Financial Statements


Annual Report                                       Premium Capital Reserve   13


                            SCHEDULE OF INVESTMENTS
                            PREMIUM CAPITAL RESERVE

Notes to Schedule of Investments
FHLB = Federal Home Loan Bank
FNMA = Federal National Mortgage Association
LIBOR = London Interbank Offered Rate
resets = The frequency  with which a  fixed-income  security's  coupon  changes,
     based  on  current  market  conditions  or an  underlying  index.  The more
     frequently a security resets, the less risk the investor is taking that the
     coupon will vary significantly from current market rates.
VRN  =  Variable  Rate  Note.  Interest  reset  date is  indicated  and  used in
     calculating  the  weighted  average  portfolio  maturity.   Rate  shown  is
     effective March 31, 1997.
(1)  The rates for commercial paper and certificates of deposit are the yield to
     maturity at March 31, 1997.
(2)  Security was  purchased  under Rule 144A or Section 4(2) of the  Securities
     Act  of  1933  and,  unless  registered  under  the  Act or  exempted  from
     registration,  may only be sold to qualified institutional  investors.  The
     aggregate value of restricted securities at March 31, 1997, was $13,426,416
     which represented 8.7% of net assets.
(3)  Final maturity indicated.  Expected remaining maturity used for purposes of
     calculating the weighted average portfolio maturity.
(4)  Restricted  as to  resale.  Security  may  require  registration  under the
     Securities Act of 1933 or an exemption therefrom in order to effect sale in
     the  ordinary  course  of  business.  The  aggregate  value  of  restricted
     securities was $4,500,000, which represented 2.9% of net assets.

See Notes to Financial Statements


14   Premium Capital Reserve                        American Century Investments

<TABLE>
<CAPTION>
                                  PREMIUM BOND

                                                                                AVERAGE ANNUAL RETURNS
                                                          6 MONTHS       1 YEAR         3 YEARS    LIFE OF FUND
TOTAL RETURNS AS OF MARCH 31, 1997
<S>                                                         <C>           <C>            <C>           <C>  
Premium Bond                                                2.48%         4.57%          6.81%         5.31%
Lehman Aggregate Bond Index                                 2.42%         4.91%          6.86%         5.72%
Average A-Rated Corporate Debt Fund(1)                      2.21%         4.23%          5.98%         5.14%(2)
Fund's Ranking Among
A-Rated Corporate Debt Funds(1)                              --       42 out of 119  15 out of 84  33 out of 65

(1) According to Lipper Analytical Services.
(2) Returns  since  4/30/93,  the date  nearest the fund's  inception  for which
    return data are available. Inception date was April 1, 1993.
</TABLE>

See pages 32-33 for more information  about returns,  the comparative  index and
Lipper fund rankings.

[mountain graph - data below]

GROWTH OF $100,000 OVER THE LIFE OF THE FUND

Value on 3/31/97

$100,000 investment made 4/1/93

            Premium Bond       Lehman Aggregate Bond Index

4/1/93        $100,000                  $100,000
Apr-93        $100,740                  $100,700
May-93        $100,300                  $100,820
Jun-93        $101,870                  $102,650
Jul-93        $102,460                  $103,230
Aug-93        $104,460                  $105,040
Sep-93        $104,620                  $105,330
Oct-93        $104,890                  $105,720
Nov-93        $104,020                  $104,820
Dec-93        $104,530                  $105,390
Jan-94        $105,970                  $106,820
Feb-94        $103,370                  $104,960
Mar-94        $100,910                  $102,370
Apr-94        $99,910                   $101,550
May-94        $99,770                   $101,540
Jun-94        $99,530                   $101,320
Jul-94        $101,650                  $103,330
Aug-94        $101,540                  $103,460
Sep-94        $100,020                  $101,930
Oct-94        $99,810                   $101,840
Nov-94        $99,590                   $101,620
Dec-94        $100,250                  $102,320
Jan-95        $102,120                  $104,340
Feb-95        $104,630                  $106,820
Mar-95        $105,430                  $107,480
Apr-95        $106,990                  $108,980
May-95        $111,950                  $113,200
Jun-95        $112,630                  $114,030
Jul-95        $112,070                  $113,770
Aug-95        $113,680                  $115,150
Sep-95        $114,820                  $116,270
Oct-95        $116,560                  $117,780
Nov-95        $118,530                  $119,540
Dec-95        $120,400                  $121,220
Jan-96        $121,110                  $122,030
Feb-96        $118,510                  $119,910
Mar-96        $117,580                  $119,070
Apr-96        $116,750                  $118,400
May-96        $116,420                  $118,160
Jun-96        $117,860                  $119,750
Jul-96        $118,130                  $120,080
Aug-96        $117,910                  $119,880
Sep-96        $119,980                  $121,960
Oct-96        $122,820                  $124,670
Nov-96        $125,150                  $126,800
Dec-96        $123,690                  $125,620
Jan-97        $123,960                  $126,010
Feb-97        $124,310                  $126,320
Mar-97        $122,960                  $124,920

Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original cost. The line representing the fund's total return includes  operating
expenses (such as transaction  costs and management  fees) that reduce  returns,
while the total return line of the index does not.


PORTFOLIO AT A GLANCE
                                 3/31/97          3/31/96
Number of Securities               47               45
Weighted Average Maturity       8.6 years        9.3 years
Average Duration                4.6 years        5.3 years
Expense Ratio                     0.45%            0.43%

YIELD AS OF MARCH 31, 1997
                                 30-DAY
                                   SEC
                                  YIELD

Premium Bond                      6.50%

Yield is defined in the Glossary on page 33.


                 Many of the investment terms in this report are
                       defined in the Glossary on page 33.


Annual Report                                                  Premium Bond   15


                                  PREMIUM BOND

Management Q & A

An interview with Bud Hoops,  a senior vice  president and portfolio  manager on
the Premium Reserve funds management team.

HOW DID THE FUND PERFORM?

The fund  performed  very well  relative to its peers  during the twelve  months
ended March 31, 1997.  For the fiscal year,  the fund returned  4.57%,  compared
with the 4.23% average return of the 119 "A-Rated  Corporate Debt Funds" tracked
by Lipper Analytical Services. (See the Total Returns table on the previous page
for other fund performance  comparisons.) The fund's relatively low expenses and
our disciplined, team-oriented management approach are important reasons for the
fund's strong performance.

HOW WAS THE FUND POSITIONED DURING THE PERIOD?

We  maintained  a defensive  posture,  keeping  the fund's  duration at or below
neutral for most of the period.  We shortened the fund's duration from 5.3 years
at the  beginning  of the  period to 4.6 years by the end of March.  The  fund's
short  duration was a benefit as bond prices  declined  overall  during the past
year.  Rather  than try to guess the  direction  of  interest  rates,  we took a
steady,   conservative  approach  to  managing  the  fund  that  paid  off  with
above-average returns.

We also increased the fund's holdings of mortgage-backed securities,  which were
the top-performing fixed-income sector for the year. Mortgage-backed securities,
with their relatively high yields, tend to perform best when yield

[bar chart - data below]

PREMIUM BOND FISCAL YEAR RETURNS
(Periods ended March 31)

            Premium Bond       Lehman Aggregate Bond Index

1994            0.92%                     2.37%
1995            4.48%                     4.99%
1996           11.53%                    10.79%
1997            4.57%                     4.91%

This chart  illustrates  the  historical  year-by-year  volitility of the fund's
returns  since its inception  and compares  them with the index's  returns.  The
fund's total returns include operating  expenses,  while the index's do not. See
page 32 for a definition of the index.

16   Premium Bond                                   American Century Investments


                                  PREMIUM BOND

contributes  more than price  changes to total return.  Because  mortgage-backed
issues  tend not to perform as well when  rates are  rising,  we added them only
selectively  over the last few months,  instead making the bulk of our purchases
during the first half of the period.

HOW HAS THE  STRONG  GROWTH OF THE U.S.  ECONOMY  AFFECTED  THE  CORPORATE  BOND
MARKET?

The big story in the corporate  bond market over the last few years has been the
compression of credit  spreads.  Corporate  bonds  typically offer higher yields
than Treasury debt as compensation  for increased credit risk. The difference in
yields is known as the "spread."  Spreads between  like-maturity  corporates and
Treasurys have fallen to ten-year lows, or about  one-third of their  historical
averages.

A vibrant  U.S.  economy is behind  this  trend:  the strong  economy  helped to
improve  corporate  balance  sheets,  which  translated into credit upgrades and
higher prices for corporate  debt.  The rapid pace of  stock-financed  corporate
mergers and acquisitions also improved corporate credit by encouraging economies
of scale and eliminating inefficiencies.  Heavy demand from mutual fund managers
and foreign  buyers also helped  increase  prices and lower  yields on corporate
bonds.

BUT YOU ACTUALLY  DECREASED  THE FUND'S  HOLDINGS OF  CORPORATE  DEBT DURING THE
PERIOD. WHY?

The  compression of spreads between  corporate and Treasury  securities has made
corporate  securities  less  attractive than other  fixed-income  sectors.  As a
result,  we've been taking  profits by selling some of our corporate  securities
and  putting  that cash to work in  Treasurys.  But if spreads  widen,  we would
likely increase our exposure to corporate debt.

YOU MAINTAINED  MODEST  HOLDINGS OF CORPORATE BONDS RATED BBB DURING THE PERIOD.
WHY?

Selectively  adding BBB-rated  corporate  securities  proved to be a good way to
enhance the fund's  yield and boost  returns.  We worked very  closely  with our
corporate  credit research team to identify  securities we felt were undervalued
by virtue of their credit rating or market valuation. The trend toward improving
corporate  credit  resulted  in rating  upgrades  and  tighter  spreads  between
corporate  bonds rated AAA and BBB.  Rating  upgrades  benefit the fund  because
upgraded securities typically rise in value.

YOU'VE TALKED A LOT ABOUT CORPORATE CREDIT  CONSIDERATIONS.  CAN YOU EXPLAIN HOW
THE CREDIT RESEARCH TEAM FITS INTO THE OVERALL MANAGEMENT OF THE FUND?

Yes. The credit  research team plays an integral part in our security  selection
process, reviewing every security considered for purchase by our corporate money
market and bond funds. As a result, we're often able to purchase securities that
we feel are  undervalued but are likely to appreciate in value because of credit
rating upgrades.

[pie charts]

PORTFOLIO COMPOSITION BY SECURITY TYPE (as of 3/31/97)
U.S. Treasury Securities 40%
Corporate Bonds 32%
Mortgage-Backed
  Securities 17%
Sovereign Governments &
  Agencies 10%
Cash 1%

PORTFOLIO COMPOSITION BY SECURITY TYPE (as of 9/30/96)
Corporate Bonds 43%
U.S. Treasury Securities 31%
Mortgage-Backed
  Securities 15%
Sovereign Governments &
  Agencies 9%
Cash 2%


Annual Report                                                  Premium Bond   17


                                  PREMIUM BOND

MANY ANALYSTS SEEM TO THINK INTEREST  RATES ARE HEADED HIGHER.  HOW WOULD HIGHER
RATES AFFECT THE LONGER-MATURITY CORPORATE BONDS THE FUND TYPICALLY INVESTS IN?

In general, the longer a fixed-income  security's  maturity,  the more its price
will  fluctuate  in response to a change in interest  rates.  That  explains why
short- and intermediate-term  securities outperformed longer-maturity bonds over
the past twelve months.  Dramatically  higher rates would pose a greater risk to
corporate bonds,  however. If the Fed were to increase interest rates sharply in
an effort to pre-empt  inflation,  higher  rates would  likely slow the economy.
Slower economic activity would hurt corporations'  balance sheets and reduce the
attractiveness of corporate debt.

WHAT'S YOUR OUTLOOK FOR INTEREST RATES OVER THE NEXT SIX MONTHS?

It's  uncertain if the Fed's March 1997  interest  rate increase was an isolated
event or the first in a series of moves.  Nevertheless,  high levels of consumer
confidence,  a vibrant housing market and rising  employment and wage growth all
seem to argue for continued strong U.S. economic growth.  While inflation has so
far remained tame, we're uncertain if prices can remain subdued with the economy
growing at a pace of more than 4% a year.

Though  overall labor costs have remained  under  control,  the Fed is concerned
that the emerging trend toward rising wages may lead to inflation. (Wages are an
important  consideration  for future  inflation  because  they account for about
sixty  percent of total  business  costs and because  consumer  spending,  which
typically rises along with wages,  accounts for about two-thirds of all economic
activity.)   It's   unlikely   that   labor   costs  will   remain   tame  going
forward--improvements  in worker  productivity  and  savings on health  care and
benefits  that  have so far kept  labor  costs in check  have  likely  run their
course. As a result, we expect the Fed will continue to hike short-term interest
rates  in an  attempt  to cool  the  economy.  But  because  the  Fed is  acting
pre-emptively  by hiking  interest  rates before  inflation gets out of hand, we
don't think rates are headed dramatically higher.

WITH THAT OUTLOOK IN MIND, HOW WILL YOU MANAGE THE FUND GOING FORWARD?

We'll likely maintain the fund's defensive posture in the near term. Rather than
try to guess the Fed's  interest  rate  intentions,  we'll  take a  conservative
approach to managing the fund's duration and average maturity. We'll continue to
use our  value-oriented  approach to security  selection.  That means that we're
likely to underweight  corporate bonds while adding  Treasury  securities to the
fund in coming months.

[pie charts]

PORTFOLIO COMPOSITION BY CREDIT RATING (as of 3/31/97)
AAA 58%
AA 7%
A 22%
BBB 13%

PORTFOLIO COMPOSITION BY CREDIT RATING (as of 9/30/96)
AAA 48%
AA 14%
A 20%
BBB 18%


18   Premium Bond                                   American Century Investments


                            SCHEDULE OF INVESTMENTS
                                  PREMIUM BOND

MARCH 31, 1997

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

U.S. TREASURY SECURITIES
$  700,000    U.S. Treasury Note, 5.625%,
                6/30/97                                         $   700,441
 1,000,000    U.S. Treasury Note, 5.125%,
                2/28/98                                             991,560
   700,000    U.S. Treasury Note, 5.75%,
                12/31/98                                            693,000
 1,600,000    U.S. Treasury Note, 5.875%,
                1/31/99                                           1,585,504
   300,000    U.S. Treasury Note, 7.125%,
                9/30/99                                             304,032
   400,000    U.S. Treasury Note, 7.75%,
                1/31/00                                             411,624
 1,100,000    U.S. Treasury Note, 5.75%,
                10/31/00                                          1,068,034
   200,000    U.S. Treasury Note, 6.625%,
                7/31/01                                             199,126
   250,000    U.S. Treasury Note, 5.875%,
                2/15/04                                             236,485
   300,000    U.S. Treasury Note, 7.00%,
                7/15/06                                             300,657
   100,000    U.S. Treasury Note, 6.50%,
                10/15/06                                             96,844
   400,000    U.S. Treasury Bond, 8.875%,
                8/15/17                                             469,376
   400,000    U.S. Treasury Bond, 7.125%,
                2/15/23                                             394,876
   300,000    U.S. Treasury Bond, 7.50%,
                11/15/24                                            309,939
   475,000    U.S. Treasury Bond, 7.625%,
                2/15/25                                             498,303
   300,000    U.S. Treasury Bond, 6.00%,
                2/15/26                                             256,593
                                                                 ----------
TOTAL U.S. TREASURY SECURITIES--39.9%                             8,516,394
   (Cost $8,632,429)                                             ----------

MORTGAGE-BACKED SECURITIES(1)
 1,495,882    FNMA Pool #272894, 6.00%,
                2/1/09                                            1,419,053
 1,424,026    GNMA Pool #313107, 7.00%,
                11/15/22                                          1,371,067
   115,004    GNMA Pool #407141, 9.25%,
                2/15/25                                             122,010


Principal Amount                                                         Value
- --------------------------------------------------------------------------------

$  500,322    GNMA Pool #408099, 8.75%,
                3/15/25                                         $   520,395
   198,644    GNMA Pool #407254, 9.25%,
                3/15/25                                             210,746
TOTAL MORTGAGE-BACKED                                            ----------
SECURITIES--17.0%                                                 3,643,271
   (Cost $3,726,110)                                             ----------

CORPORATE BONDS
AIRLINES--2.2%
   479,305    Delta Air Lines, Inc., Equipment
                Trust Certificates, 7.541%,
                10/11/11                                            463,129
AUTOMOBILES & AUTO PARTS--1.6%                                   ----------
   350,000    General Motors Co., 7.00%,
                6/15/03                                             344,750
BANKING--6.7%                                                    ----------
   400,000    Chase Manhattan Corp., 8.80%,
                2/1/00                                              400,500
   250,000    Corestates Capital Corp., 5.875%,
                10/15/03                                            232,187
   200,000    First Union Corp., 8.77%,
                11/15/04                                            208,000
   300,000    MBNA Corp., 6.875%, 10/1/99                           299,625
   300,000    NationsBank Corporation,  VRN, 
                6.112%, 4/15/97, resets 
                quarterly off the 3-month LIBOR 
                plus 0.55% with no caps, final
                maturity 1/15/27                                    293,805
                                                                 ----------
                                                                  1,434,117
CHEMICALS & RESINS--1.7%                                         ----------
   300,000    ARCO Chemical Co., 10.25%,
                11/1/10                                             369,000
FINANCIAL SERVICES--7.1%                                         ----------
   500,000    Associates Corp., NA, 6.625%,
                6/15/05                                             474,375
   200,000    Ford Motor Credit Co., 6.75%,
                5/15/05                                             191,000
   550,000    Lehman Brothers Holdings Inc.,
                6.625%, 11/15/00                                    541,063
   300,000    Paine Webber Group Inc., 7.875%,
                2/15/03                                             305,625
                                                                 ----------
                                                                  1,512,063
                                                                 ----------
See Notes to Financial Statements


Annual Report                                                  Premium Bond   19


                            SCHEDULE OF INVESTMENTS
                                  PREMIUM BOND

MARCH 31, 1997

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

INSURANCE--0.8%
$  175,000    Delphi Financial Group, Inc.,
                9.31%, 3/25/27                                  $   174,125
MEDIA & BROADCASTING--1.4%                                       ----------
   300,000    Time Warner Inc., 6.85%,
                1/15/26, Put Date 1/15/03                           291,375
REAL ESTATE--3.7%                                                ----------
   300,000    Price REIT, Inc. (The), 7.25%,
                11/1/00                                             298,125
   500,000    Spieker Properties, Inc., 6.80%,
                12/15/01                                            490,000
                                                                 ----------
                                                                    788,125
RETAIL (GENERAL MERCHANDISE)--1.6%                               ----------
   300,000    Sears, Roebuck & Co., Inc.,
                9.375%, 11/1/11                                     344,250
TOBACCO--0.9%                                                    ----------
   200,000    Philip Morris Companies Inc.,
                6.80%, 12/1/03                                      193,000
UTILITIES--3.9%                                                  ----------
   500,000    Columbia Gas System, Inc. (The),
                6.80%, 11/28/05                                     477,500
   400,000    Duke Power Co., 6.875%, 8/1/23                        351,000
                                                                 ----------
                                                                    828,500
                                                                 ----------
TOTAL CORPORATE BONDS--31.6%                                      6,742,434
   (Cost $6,892,161)                                             ----------

SOVEREIGN GOVERNMENTS & AGENCIES
   500,000    Hydro-Quebec, 8.05%, 7/7/24,
                Put Date 7/7/06                                     528,750
   500,000    Korea Electric Power, 6.375%,
                12/1/03                                             470,000
   500,000    National Bank of Canada, 8.125%,
                8/15/04                                             519,375
   300,000    Santander Financial Issuances Ltd.,
                6.375%, 2/15/11                                     265,125
   400,000    Wharf Resources Ltd., 7.625%,
                3/13/07, (Acquired 3/6/97,
                Cost $396,836)(2)                                   389,000
TOTAL SOVEREIGN GOVERNMENTS                                      ----------
& AGENCIES--10.2%                                                 2,172,250
   (Cost $2,257,274)                                             ----------


Principal Amount                                                         Value
- --------------------------------------------------------------------------------

TEMPORARY CASH INVESTMENTS--1.3%
Repurchase Agreement, Morgan (J.P.) & Co. Inc.,
  (U.S. Treasury obligations), in a joint trading
  account at 6.20%, dated 3/31/97,
  due 4/1/97 (Delivery value $288,050)                        $     288,000
   (Cost $288,000)                                               ----------
TOTAL INVESTMENT SECURITIES--100.0%                             $21,362,349
   (Cost $21,795,974)                                            ==========

Notes to Schedule of Investments
FNMA = Federal National Mortgage Association
GNMA = Government National Mortgage Association
LIBOR = London Interbank Offered Rate
resets = The frequency  with which a  fixed-income  security's  coupon  changes,
     based  on  current  market  conditions  or an  underlying  index.  The more
     frequently a security resets, the less risk the investor is taking that the
     coupon will vary significantly from current market rates.
VRN  =  Variable  Rate  Note.  Interest  reset  date is  indicated  and  used in
     calculating  the  weighted  average  portfolio  maturity.   Rate  shown  is
     effective March 31, 1997.
(1)  Final maturity indicated.  Expected remaining maturity used for purposes of
     calculating the weighted average portfolio maturity.
(2)  Security was purchased  under Rule 144A of the  Securities Act of 1933 and,
     unless registered under the Act or exempted from registration,  may only be
     sold  to  qualified  institutional   investors.   The  aggregate  value  of
     restricted  securities at March 31, 1997, was $389,000,  which  represented
     1.79% of the net assets of the Premium Bond Fund.

See Notes to Financial Statements


20   Premium Bond                                   American Century Investments

<TABLE>
<CAPTION>
                      STATEMENTS OF ASSETS AND LIABILITIES

MARCH 31, 1997

                                                                                 PREMIUM            PREMIUM               PREMIUM
                                                                           GOVERNMENT RESERVE   CAPITAL RESERVE            BOND
                                                                           ------------------   ---------------            ----
ASSETS
<S>                                                                         <C>                 <C>                   <C>          
Investment securities, at value (amortized cost
  for Government Reserve and Capital Reserve;
  identified cost of $21,795,974 for Bond) (Note 3) ..................      $   39,094,999      $   150,969,750       $  21,362,349
Cash .................................................................                --              1,196,782                 484
Receivable for capital shares sold ...................................             317,996            1,970,671             109,128
Interest receivable ..................................................             130,972              178,053             314,446
                                                                                   -------              -------             -------
                                                                                39,543,967          154,315,256          21,786,407
                                                                                ----------          -----------          ----------

LIABILITIES
Disbursements in excess of demand deposit cash .......................              50,155              150,517               1,169
Payable for capital shares redeemed ..................................             620,172               66,408              12,214
Accrued management fees (Note 2) .....................................              14,618               58,390               8,301
Dividends payable ....................................................              21,013               81,979              14,720
Accrued expenses and other liabilities ...............................                  21                  129                  12
                                                                                   -------              -------              ------
                                                                                   705,979              357,423              36,416
                                                                                   -------              -------              ------
Net Assets Applicable to Outstanding Shares ..........................      $   38,837,988      $   153,957,833       $  21,749,991
                                                                            ==============      ===============       =============

CAPITAL SHARES, $0.01 PAR VALUE
Authorized ...........................................................       1,000,000,000        1,000,000,000         100,000,000
                                                                             =============        =============         ===========
Outstanding ..........................................................          38,837,988          153,958,859           2,229,409
                                                                                ==========          ===========           =========

Net Asset Value Per Share ............................................      $         1.00      $          1.00       $        9.76
                                                                            ==============      ===============       =============

NET ASSETS CONSIST OF:
Capital paid in ......................................................      $   38,837,988      $   153,958,878       $  22,211,652
Accumulated undistributed net realized loss on investments ...........                --                 (1,045)            (28,036)
Net unrealized depreciation on investments (Note 3) ..................                --                   --              (433,625)
                                                                                   -------              -------              ------
                                                                            $   38,837,988      $   153,957,833       $  21,749,991
                                                                            ==============      ===============       =============

See Notes to Financial Statements
</TABLE>


Annual Report                          Statements of Assets and Liabilities   21
<TABLE>
<CAPTION>
                            STATEMENTS OF OPERATIONS

FOR THE YEAR ENDED MARCH 31, 1997

                                                                      PREMIUM          PREMIUM         PREMIUM
                                                                GOVERNMENT RESERVE CAPITAL RESERVE      BOND
                                                                ------------------ ---------------      ----
INVESTMENT INCOME
Income:
<S>                                                                 <C>              <C>             <C>       
Interest ......................................................     $1,675,484       $7,781,071      $1,361,449
                                                                    ----------       ----------      ----------

Expenses:
Management fees (Note 2) ......................................        138,640          640,040          91,566
Directors' fees and expenses ..................................            292            1,343             189
                                                                    ----------       ----------      ----------
                                                                       138,932          641,383          91,755
                                                                    ----------       ----------      ----------

Net investment income .........................................      1,536,552        7,139,688       1,269,694
                                                                    ----------       ----------      ----------

REALIZED AND UNREALIZED LOSS
ON INVESTMENTS (NOTE 3)
Net realized loss on investments ..............................             --             (387)         (7,433)
Change in net unrealized depreciation on investments ..........             --               --        (393,769)
                                                                    ----------       ----------      ----------

Net realized and unrealized
loss on investments ...........................................             --             (387)       (401,202)
                                                                    ----------       ----------      ----------
Net Increase in Net Assets
Resulting from Operations .....................................     $1,536,552       $7,139,301      $  868,492
                                                                    ==========       ==========      ==========

See Notes to Financial Statements
</TABLE>


22   Statements of Operations                       American Century Investments

<TABLE>
<CAPTION>
                      STATEMENTS OF CHANGES IN NET ASSETS

YEARS ENDED MARCH 31, 1997 AND
MARCH 31, 1996

                                                     PREMIUM                        PREMIUM                        PREMIUM
                                                GOVERNMENT RESERVE              CAPITAL RESERVE                      BOND
                                                ------------------              ---------------                      ----

Increase (Decrease) in Net Assets               1997           1996            1997          1996            1997           1996
                                          ---------------------------   -----------------------------   ---------------------------
OPERATIONS
<S>                                       <C>            <C>            <C>             <C>             <C>            <C>         
Net investment income ..................  $  1,536,552   $  1,129,713   $   7,139,688   $   7,677,131   $  1,269,694   $    968,146
Net realized gain (loss) on investments           --             --              (387)          1,221         (7,433)       164,018
Change in net unrealized appreciation
  (depreciation) on investments ........          --             --              --              --         (393,769)       261,690
                                             ---------      ---------       ---------       ---------        -------      ---------
Net increase in net assets
  resulting from operations ............     1,536,552      1,129,713       7,139,301       7,678,352        868,492      1,393,854
                                             ---------      ---------       ---------       ---------        -------      ---------

DISTRIBUTIONS TO SHAREHOLDERS
From net investment income .............    (1,536,552)    (1,129,713)     (7,139,688)     (7,677,131)    (1,269,694)      (968,146)
From net realized gains on
  investment transactions ..............          --             --              --              --             --             --
                                             ---------      ---------       ---------       ---------        -------      ---------
Decrease in net assets
  from distributions ...................    (1,536,552)    (1,129,713)     (7,139,688)     (7,677,131)    (1,269,694)      (968,146)
                                            ----------     ----------      ----------      ----------     ----------       -------- 

CAPITAL SHARE TRANSACTIONS
Proceeds from shares sold ..............    57,200,249     39,673,000     244,535,922     299,774,625      7,964,953     14,360,300
Proceeds from reinvestment
  of distributions .....................     1,457,750      1,068,845       6,775,632       7,350,635      1,246,658        949,722
Payments for shares redeemed ...........   (46,010,775)   (30,931,876)   (230,769,999)   (312,138,031)    (7,339,935)    (5,790,446)
                                           -----------    -----------    ------------    ------------     ----------     ---------- 
Net increase (decrease) in net assets
  from capital share transactions ......    12,647,224      9,809,969      20,541,555      (5,012,771)     1,871,676      9,519,576
                                            ----------      ---------      ----------      ----------      ---------      ---------

Net increase (decrease)
  in net assets ........................    12,647,224      9,809,969      20,541,168      (5,011,550)     1,470,474      9,945,284

NET ASSETS
Beginning of year ......................    26,190,764     16,380,795     133,416,665     138,428,215     20,279,517     10,334,233
                                            ----------     ----------     -----------     -----------     ----------     ----------

End of year ............................  $ 38,837,988   $ 26,190,764   $ 153,957,833   $ 133,416,665   $ 21,749,991   $ 20,279,517
                                          ============   ============   =============   =============   ============   ============

TRANSACTIONS IN SHARES OF THE FUNDS
Sold ...................................    57,200,249     39,673,000     244,535,922     299,774,625        805,036      1,428,902
Issued in reinvestment
  of distributions .....................     1,457,750      1,068,845       6,775,632       7,350,635        126,431         94,806
Redeemed ...............................   (46,010,775)   (30,931,876)   (230,769,999)   (312,138,050)      (743,472)      (574,171)
                                           -----------    -----------    ------------    ------------       --------       -------- 
Net increase (decrease) ................    12,647,224      9,809,969      20,541,555      (5,012,790)       187,995        949,537
                                            ==========      =========      ==========      ==========        =======        =======

See Notes to Financial Statements
</TABLE>


Annual Report                           Statements of Changes in Net Assets   23


                         NOTES TO FINANCIAL STATEMENTS

MARCH 31, 1997

1. Organization and Summary of Significant  Accounting  Policies  Organization--
American Century Premium  Reserves,  Inc. (the  Corporation) is registered under
the  Investment  Company  Act of  1940  as an  open-end  diversified  management
investment company.  Three series of funds,  investing primarily in fixed-income
securities,  are  currently  issued as :  American  Century - Benham  Government
Reserve Fund  (Government  Reserve),  American  Century - Benham Premium Capital
Reserve Fund (Capital  Reserve) and American  Century - Benham Premium Bond Fund
(Bond) (the Funds).  The investment  objective of Government Reserve and Capital
Reserve is to obtain as high a level of  current  income as is  consistent  with
preservation of capital and maintenance of liquidity.  The investment  objective
of Bond is to obtain a high level of income from  investments  in a portfolio of
bonds and other debt obligations having a weighted average maturity of three and
one-half years or more. The following significant  accounting policies,  related
to the Funds, are in accordance with accounting  policies  generally accepted in
the investment company industry.

Security Valuations--  Securities held by Government Reserve and Capital Reserve
are valued at amortized cost, which approximates current value.  Securities held
by Bond are valued  through  valuations  obtained  through a commercial  pricing
service or at the mean of the most recent bid and asked prices.  When valuations
are not readily available,  securities are valued at fair value as determined in
accordance with procedures adopted by the Board of Directors.

Security  Transactions--  Security  transactions  are  accounted for on the date
purchased  or  sold.  Net  realized  gains  and  losses  are  determined  on the
identified cost basis, which is also used for federal income tax purposes.

Investment  Income--  Interest  income  is  recorded  on the  accrual  basis and
includes  amortization  of premiums and  discounts.  Premiums and  discounts are
amortized  daily on a  straight-line  basis for  securities  held by  Government
Reserve and Capital  Reserve.  Premiums and discounts  are  amortized  using the
effective interest rate method for Bond.

Repurchase  Agreements--  The Funds may enter into  repurchase  agreements  with
institutions that the Funds'  investment  manager,  American Century  Investment
Management,  Inc. (ACIM),  has determined are creditworthy  pursuant to criteria
adopted by the Board of  Directors.  Each  repurchase  agreement  is recorded at
cost.  The  Funds  require  that  the  securities   purchased  in  a  repurchase
transaction be transferred to the custodian in a manner sufficient to enable the
funds to obtain those  securities in the event of a default under the repurchase
agreement.  ACIM  monitors,  on a  daily  basis,  the  value  of the  securities
transferred  to  ensure  that the  value,  including  accrued  interest,  of the
securities  under each repurchase  agreement is equal to or greater than amounts
owed to the Funds under each repurchase agreement.

Joint Trading Account--  Pursuant to an Exemptive Order issued by the Securities
and  Exchange  Commission,  the Funds,  along with other  registered  investment
companies  having   management   agreements  with  ACIM  and  Benham  Management
Corporation,  may transfer uninvested cash balances into a joint trading account
held  at the  Funds'  custodian.  These  balances  are  invested  in one or more
repurchase  agreements  that  are  collateralized  by U.S.  Treasury  or  Agency
obligations.

Income Tax Status-- It is the Funds'  policy to  distribute  all net  investment
income and net realized capital gains to shareholders  and to otherwise  qualify
as a regulated  investment  company under the provisions of the Internal Revenue
Code. Accordingly, no provision has been made for federal or state taxes.

Distributions to  Shareholders--  Distributions  from net investment  income are
declared daily and distributed  monthly.  Government Reserve and Capital Reserve
do not expect to realize any  long-term  capital gains and,  accordingly  do not
expect to pay any capital gains  distributions.  Distributions from net realized
gains, for Bond, are declared and paid annually.

At March 31, 1997,  accumulated net realized  short-term capital loss carryovers
for Capital Reserve and Bond of $1,045 and $22,631, respectively, (expiring 2003
through 2005) may be used to offset future taxable gains.

The character of distributions  made during the year from net investment  income
or net realized  capital gains may differ from their  ultimate  characterization
for federal income tax purposes. These differences are due to differences in the
recognition  of  income  and  expense  items  for  financial  statement  and tax
purposes.

Supplementary  Information--  Certain  officers and directors of the Corporation
are also officers and/or directors, and, as a group, controlling stockholders of
American  Century  Companies,  Inc.  (ACC),  the  parent  of  the  Corporation's
investment  advisor,  ACIM,  the  Corporation's  distributor,  American  Century
Investment Services, Inc. (ACIS), and the Corporation's transfer agent, American
Century Services Corporation (ACSC).


24   Notes to Financial Statements                  American Century Investments


                         NOTES TO FINANCIAL STATEMENTS

MARCH 31, 1997

Use of Estimates--  The  preparation of financial  statements in conformity with
generally accepted  accounting  principles requires management to make estimates
and assumptions  that affect the reported  amounts of assets and liabilities and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements  and the reported  amounts of increases  and  decreases in net assets
from  operations  during the  period.  Actual  results  could  differ from these
estimates.

- --------------------------------------------------------------------------------
2. Transactions with Related Parties

The Corporation has entered into a Management  Agreement with ACIM that provides
the Funds with  investment  advisory and  management  services in exchange for a
single,  unified fee.  The  Agreement  provides  that all expenses of the Funds,
except brokerage commissions,  taxes, interest,  expenses of those directors who
are not considered "interested persons" as defined in the Investment Company Act
of 1940 (including  counsel fees) and  extraordinary  expenses,  will be paid by
ACIM.  The fee is computed  daily and paid monthly based on each Fund's  average
daily closing net assets during the previous  month.  The annual  management fee
for each Fund is 0.45%.

- --------------------------------------------------------------------------------
3. Investment Transactions

The aggregate  cost of investment  securities  purchased  (excluding  short-term
investments)  for the year ended March 31, 1997, for Bond,  totaled  $10,830,750
for  U.S.  Treasury  and  Agency  obligations  and  $3,332,079  for  other  debt
obligations.  Proceeds from investment  securities  sold  (excluding  short-term
investments),  for  Bond,  totaled  $6,825,558  for  U.S.  Treasury  and  Agency
obligations and $5,568,592 for other debt obligations.

As of March 31, 1997,  accumulated  net  unrealized  depreciation,  based on the
aggregate cost of  investments  of $21,801,380  for federal income tax purposes,
was $439,031,  for Bond,  consisting of unrealized  appreciation of $62,975, and
unrealized depreciation of $502,006.

- --------------------------------------------------------------------------------
4. Corporate Events

The following name changes became effective January 1, 1997:
<TABLE>
                    NEW NAMES                                                   FORMER NAMES

<S>                <C>                                                          <C>
Funds' Issuer:      American Century Premium Reserves, Inc.                     Twentieth Century Premium Reserves, Inc.
Funds:              American Century - Benham Premium Government Reserve Fund   Twentieth Century Premium Government Reserve
                    American Century - Benham Premium Capital Reserve Fund      Twentieth Century Premium Capital Reserve
                    American Century - Benham Premium Bond Fund                 Twentieth Century Premium Managed Bond
Parent Company:     American Century Companies, Inc.                            Twentieth Century Companies, Inc.
Distributor:        American Century Investment Services, Inc.                  Twentieth Century Securities, Inc.
Transfer Agent:     American Century Services Corporation                       Twentieth Century Services, Inc.
</TABLE>


Annual Report                                 Notes to Financial Statements   25

<TABLE>
<CAPTION>
                              FINANCIAL HIGHLIGHTS
                           PREMIUM GOVERNMENT RESERVE

                                               For a Share Outstanding Throughout the Years Ended March 31

                                                                 1997         1996         1995          1994
PER-SHARE DATA
Net Asset Value,
<S>                                                             <C>           <C>          <C>          <C>  
Beginning of Year ..........................................    $1.00         $1.00        $1.00        $1.00
                                                                -----         -----        -----        -----
Income From Investment Operations
  Net Investment Income ....................................     0.05          0.05         0.05         0.03
                                                                 ----          ----         ----         ----
Distributions
  From Net Investment Income ...............................    (0.05)        (0.05)       (0.05)       (0.03)
                                                                -----         -----        -----        ----- 
Net Asset Value, End of Year ...............................    $1.00         $1.00        $1.00        $1.00
                                                                =====         =====        =====        =====
  Total Return(1) ..........................................     5.07%         5.49%        4.62%        2.75%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ......................................     0.45%        0.44%        0.45%         0.45%
Ratio of Net Investment Income
to Average Net Assets ......................................     4.96%        5.30%        4.84%         2.72%
Net Assets, End
of Year (in thousands) .....................................   $38,838      $26,191      $16,381        $5,459

(1)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

See Notes to Financial Statements
</TABLE>

26   Financial Highlights                           American Century Investments

<TABLE>
<CAPTION>
                              FINANCIAL HIGHLIGHTS
                            PREMIUM CAPITAL RESERVE

                                               For a Share Outstanding Throughout the Years Ended March 31

                                                                 1997         1996         1995          1994
PER-SHARE DATA
Net Asset Value,
<S>                                                             <C>           <C>          <C>          <C>  
Beginning of Year ..........................................    $1.00         $1.00        $1.00        $1.00
                                                                -----         -----        -----        -----
Income From Investment Operations
  Net Investment Income ....................................     0.05          0.05         0.05         0.03
                                                                 ----          ----         ----         ----
Distributions
  From Net Investment Income ...............................    (0.05)        (0.05)       (0.05)       (0.03)
                                                                -----         -----        -----        ----- 
Net Asset Value, End of Year ...............................    $1.00         $1.00        $1.00        $1.00
                                                                =====         =====        =====        =====
  Total Return (1) .........................................     5.13%         5.58%        4.66%        2.81%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ......................................     0.45%        0.45%        0.45%         0.45%
Ratio of Net Investment Income
to Average Net Assets ......................................     5.01%        5.50%        4.76%         2.83%
Net Assets, End
of Year (in thousands) ..................................... $153,958     $133,417     $138,428       $38,823

(1)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

See Notes to Financial Statements
</TABLE>


Annual Report                                          Financial Highlights   27

<TABLE>
<CAPTION>
                              FINANCIAL HIGHLIGHTS
                                  PREMIUM BOND

                                               For a Share Outstanding Throughout the Years Ended March 31

                                                                 1997         1996         1995          1994
PER-SHARE DATA
Net Asset Value,
<S>                                                             <C>           <C>          <C>         <C>   
Beginning of Year .........................................     $9.93         $9.46        $9.64       $10.00
                                                                -----         -----        -----       ------
Income From Investment Operations
  Net Investment Income ...................................      0.61          0.61         0.59         0.46
  Net Realized and Unrealized
  Gain (Loss) on Investments ..............................     (0.17)         0.47        (0.18)       (0.36)
                                                                -----          ----        -----        ----- 
  Total From
  Investment Operations ...................................      0.44          1.08         0.41         0.10
                                                                 ----          ----         ----         ----
Distributions
  From Net Investment Income ..............................     (0.61)        (0.61)       (0.59)       (0.46)
                                                                -----         -----        -----        ----- 
Net Asset Value, End of Year ..............................     $9.76         $9.93        $9.46        $9.64
                                                                =====         =====        =====        =====
  Total Return(1) .........................................      4.57%        11.53%        4.48%        0.92%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .....................................      0.45%        0.43%        0.45%         0.45%
Ratio of Net Investment Income
to Average Net Assets .....................................      6.20%        6.08%        6.30%         4.65%
Portfolio Turnover ........................................        63%          92%          51%          144%
Net Assets, End
of Year (in thousands) ....................................   $21,750      $20,280      $10,334        $8,080

(1)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

See Notes to Financial Statements
</TABLE>


28   Financial Highlights                           American Century Investments


                         REPORT OF INDEPENDENT AUDITORS

The Board of Directors and Shareholders
American Century Premium Reserves, Inc.

We have  audited  the  accompanying  statements  of assets  and  liabilities  of
American Century Premium  Reserves,  Inc.  (formerly  Twentieth  Century Premium
Reserves,  Inc.) (comprised of the American Century - Benham Premium  Government
Reserve [formerly Premium Government Reserve], American Century - Benham Premium
Capital Reserve [formerly Premium Capital Reserve] and American Century - Benham
Premium Bond [formerly Premium Managed Bond] portfolios) (the Funds),  including
the schedules of investments,  as of March 31, 1997, and the related  statements
of  operations  for the year then ended and  statements of changes in net assets
for each of the two years then ended and the  financial  highlights  for each of
the four years then ended. These financial  statements and financial  highlights
are the  responsibility  of the  Funds'  management.  Our  responsibility  is to
express an opinion on these financial  statements and financial highlights based
on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about whether the financial  statements and the financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements. Our procedures included confirmation of securities owned as of March
31, 1997, by  correspondence  with the custodian.  As to securities  relating to
uncompleted  transactions,  we performed other audit  procedures.  An audit also
includes assessing the accounting principles used and significant estimates made
by  management,   as  well  as  evaluating  the  overall   financial   statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

In our opinion,  the financial  statements and financial  highlights referred to
above present fairly, in all material  respects,  the financial position of each
of the respective Funds comprising  American Century Premium  Reserves,  Inc. at
March 31,  1997,  and the  results  of their  operations,  changes  in their net
assets,  and the  financial  highlights  for the  periods  indicated  above,  in
conformity with generally accepted accounting principles.

                                                            /s/Ernst & Young LLP
                                                            Ernst & Young LLP
Kansas City, Missouri
April 25, 1997

Annual Report                                Report of Independent Auditors   29


                              IMPORTANT NOTICE FOR
                        ALL IRA AND 403(b) SHAREHOLDERS

As required by law, any distributions you receive from an IRA and certain 403(b)
distributions  [not  eligible for  rollover to an IRA or to another  403(b)] are
subject to federal income tax withholding at the rate of 10% of the total amount
withdrawn,  unless you elect not to have withholding apply. If you don't want us
to withhold  on this  amount,  you may send us a written  notice not to have the
federal  income tax withheld.  Your written  notice is valid for six months from
the date of  receipt  at  American  Century.  Even if you plan to roll  over the
amount you withdraw to another tax-deferred  account, the withholding rate still
applies to the withdrawn  amount unless we have received a written notice not to
withhold federal income tax within six months prior to the withdrawal.

When  you plan to  withdraw,  you may  make  your  election  by  completing  our
Exchange/  Redemption form or an IRS Form W-4P. Call American Century for either
form.  Your  written  election  is valid  for only six  months  from the date of
receipt at American Century. You may revoke your election at any time by sending
a written notice to us.

Remember,  even if you elect not to have income tax withheld, you are liable for
paying income tax on the taxable portion of your withdrawal. If you elect not to
have income tax withheld or you don't have enough income tax  withheld,  you may
be responsible  for payment of estimated tax. You may incur  penalties under the
estimated  tax rules if your  withholding  and  estimated  tax  payments are not
sufficient.


30   Important Notice                               American Century Investments


                                     NOTES

Annual Report                                                         Notes   31


                             BACKGROUND INFORMATION

Investment Philosophy & Policies

American Century  Investments offers 42 fixed-income  funds,  ranging from money
market funds to long-term  bond funds and including  both taxable and tax-exempt
funds.

Premium  Government  Reserve and Premium  Capital Reserve are money market funds
that seek to obtain as high a level of current income as is consistent  with the
preservation  of capital and  maintenance of liquidity.  The funds will purchase
only securities having remaining  maturities of 13 months or less and maintain a
weighted average portfolio maturity of not more than 90 days.

An  investment  in the  funds is  neither  insured  nor  guaranteed  by the U.S.
government.  Yields will fluctuate, and there can be no assurance that the funds
will be able to  maintain  a  stable  net  asset  value  of $1 per  share.  Past
performance is no guarantee of future results.

Premium Bond seeks a high level of income from  investment in longer-term  bonds
and other debt instruments. It is designed for investors whose primary goal is a
level of income  higher than is generally  provided by money market or short-and
intermediate-term  securities  and who can accept the  generally  greater  price
volatility associated with longer-term bonds.

Comparative Indices

The  following  indices  are used in the  report  to  serve as fund  performance
comparisons. They are not investment products available for purchase.

The 90-Day  Treasury Bill Index is derived from secondary  market interest rates
as published by the Federal Reserve Bank.

The Lehman  Aggregate Bond Index is composed of the Lehman  Government/Corporate
Index and the Lehman  Mortgage-Backed  Securities  Index.  It reflects the price
fluctuations  of  Treasury   securities,   U.S.  government  agency  securities,
corporate bond issues and mortgage-backed securities.

Lipper Rankings

Lipper Analytical  Services,  Inc. is an independent mutual fund ranking service
that groups funds according to their investment  objectives.  Rankings are based
on average  annual  returns  for each fund in a given  category  for the periods
indicated. Rankings are not included for periods less than one year.

The Lipper category for the Premium Reserve funds are:

Institutional   U.S.   Government   Money  Market  Funds   (Premium   Government
Reserve)--funds  with  dollar-weighted  average  maturities of less than 90 days
that intend to maintain a stable net asset value and that invest  principally in
financial instruments issued or guaranteed by the U.S. government,  its agencies
or instrumentalities.

Institutional   Money  Market  Funds  (Premium  Capital   Reserve)--funds   with
dollar-weighted  average maturities of less than 90 days that intend to maintain
a stable net asset value and that invest in high-quality  financial  instruments
rated in the top two grades.

Corporate Debt Funds Rated A (Premium  Bond)--funds  that invest at least 65% of
their assets in government issues or corporate debt issues rated A or better.


PORTFOLIO MANAGEMENT TEAM
Senior Vice President and
Portfolio Manager                   Bud Hoops
Vice President and
Senior Portfolio Manager            Bob Gahagan
Portfolio Manager                   Jeff Houston


CREDIT RESEARCH TEAM
Taxable Fixed-Income
Research Director                   Vicki Zesses
Senior Credit Research Analysts     Edward Grant, Tanya Fleischer
Credit Research Analysts            Michael Difley, Tom Vaiana,
                                    John Walsh
Associate Credit Research Analyst   Sudha Mani


32   Background Information                         American Century Investments


                                    GLOSSARY

Returns

o    Total Return figures show the overall  percentage  change in the value of a
     hypothetical  investment  in the fund  and  assume  that all of the  fund's
     distributions are reinvested.

o    Average Annual  Returns  illustrate  the annually  compounded  returns that
     would have  produced  the  fund's  cumulative  total  returns if the fund's
     performance  had been  constant  over the  entire  period.  Average  annual
     returns smooth out variations in a fund's return;  they are not the same as
     fiscal year-by-year results. For fiscal year-by-year returns,  please refer
     to the "Financial Highlights" on pages 26-28.

Yields

o    7-day  Current  Yield is  calculated  based on the income  generated  by an
     investment  in the fund over a  seven-day  period  and is  expressed  as an
     annual percentage rate.

o    7-day  Effective  Yield is  calculated  similarly,  although this figure is
     slightly  higher than the fund's 7-Day Current Yield because of the effects
     of  compounding.  The 7-Day Effective Yield assumes that income earned from
     the fund's investments is reinvested and generating additional income.

o    30-day SEC Yield represents net investment income earned by the fund over a
     30-day period,  expressed as an annual  percentage rate based on the fund's
     share  price at the end of the  30-day  period.  The SEC  yield  should  be
     regarded as an estimate of the fund's rate of investment income, and it may
     not equal the fund's actual income  distribution rate, the income paid to a
     shareholder's  account,  or the income  reported  in the  fund's  financial
     statements.

Portfolio Statistics

o    Number of Securities--the  number of different securities held by a fund on
     a given date.

o    Weighted  Average  Maturity  (WAM)--a  measurement of the  sensitivity of a
     fixed-income  portfolio to interest rate changes. WAM indicates the average
     time until the  securities  in the  portfolio  mature,  weighted  by dollar
     amount. The longer the WAM, the more interest rate exposure and sensitivity
     the portfolio has.

o    Average  Duration--another  measure of the  sensitivity  of a  fixed-income
     portfolio to interest rate changes.  Duration is a time-weighted average of
     the interest and principal  payments of the  securities in a portfolio.  As
     the  duration of a portfolio  increases,  so does the impact of a change in
     interest rates on the value of the portfolio.

o    Expense  Ratio--the   operating  expenses  of  the  fund,  expressed  as  a
     percentage of average net assets.

Types of Fixed-Income Securities

o    Certificates of Deposit  (CDs)--CDs  represent a bank's obligation to repay
     money deposited with it for a specified period of time.

o    Commercial  Paper  (CP)--short-term  debt issued by large  corporations  to
     raise  cash  and to  cover  current  expenses  in  anticipation  of  future
     revenues.

o    Corporate  Bonds--debt  securities or  instruments  issued by companies and
     corporations.

o    Floating-Rate Notes (Floaters)--debt securities whose interest rates change
     when a  designated  base rate  changes.  The base rate is often the federal
     funds rate, the 90-day Treasury bill rate or the London  Interbank  Offered
     Rate (LIBOR).

o    Foreign  Government  Securities--debt  securities  issued or  guaranteed by
     foreign  governments  or  their  political  subdivisions.   Some  of  these
     securities  are direct  obligations of the issuing  government;  others are
     backed by some form of government sponsorship.

o    Mortgage-Backed  Securities--debt  securities  that represent  ownership in
     pools of mortgage loans.

o    Repurchase Agreements  (Repos)--short-term  debt agreements in which a fund
     buys a security at one price and  simultaneously  agrees to sell it back to
     the seller at a slightly  higher price on a specified date (usually  within
     seven days).

o    U.S.   Government  Agency   Securities--debt   securities  issued  by  U.S.
     government  agencies  (such as the  Federal  Home Loan Bank and the Federal
     Farm Credit Bank).  Government  agency  securities  include  discount notes
     (maturing in one year or less) and medium-term notes,  debentures and bonds
     (maturing in three months to 50 years).

o    U.S. Treasury  Securities--debt  securities issued by the U.S. Treasury and
     backed by the direct "full faith and credit" pledge of the U.S. government.
     Treasury  securities  include bills  (maturing in one year or less),  notes
     (maturing in two to 10 years) and bonds (maturing in more than 10 years).


Annual Report                                                      Glossary   33

[american century logo]
American
Century(sm)

P.O. Box 419200
Kansas City, Missouri
64141-6200

Person-to-Person Assistance:
1-800-345-2021 or 816-531-5575

Automated Information Line:
1-800-345-8765

Telecommunications Device for the Deaf:
1-800-634-4113 or 816-444-3485

Fax: 816-340-7962

Internet: www.americancentury.com


AMERICAN CENTURY PREMIUM RESERVES, INC.

Investment Manager
AMERICAN CENTURY INVESTMENT MANAGEMENT


This  report  and  the   statements   it
contains are  submitted  for the general
information  of  our  shareholders.  The
report    is    not    authorized    for
distribution  to  prospective  investors
unless  preceded  or  accompanied  by an
effective prospectus.

American Century Investment Services, Inc.


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