VANGUARD MASSACHUSETTS TAX EXEMPT FUNDS
N-30D, 2000-01-26
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<PAGE>

VANGUARD(R)
MASSACHUSETTS
TAX-EXEMPT FUND

Annual Report
November 30, 1999

[SHIP GRAPHIC]
[A MEMBER OF THE VANGUARD GROUP LOGO]

<PAGE>

[PHOTO OF JOHN C. BOGLE]
JOHN C. BOGLE

DEAR SHAREHOLDERS:

TWO ROADS  DIVERGED IN A WOOD,  AND I--I TOOK THE ONE LESS TRAVELED BY, AND THAT
HAS MADE ALL THE DIFFERENCE.

I can think of no better  words than those of Robert Frost to begin this special
letter to our shareholders,  who have placed such extraordinary  trust in me and
in Vanguard  over the past quarter  century.  When the firm was founded 25 years
ago,  we  deliberately  took a new road to  managing a mutual  fund  enterprise.
Instead of having the funds controlled by an outside management company with its
own  financial  interests,  the  Vanguard  funds--there  were  only  11 of  them
then--would be controlled by their own  shareholders and operate solely in their
financial interests.  The outcome of our unprecedented  decision was by no means
certain. We described it then as "The Vanguard Experiment."
     Well, I guess it's fair to say it's an experiment no more.  During the past
25 years,  the assets we hold in  stewardship  for investors  have grown from $1
billion  to more  than  $500  billion,  and I believe  that our  reputation  for
integrity,  fair-dealing,  and sound investment  principles is second to none in
this  industry.  Our  staggering  growth--which  I  never  sought--has  come  in
important part as a result of the simple investment ideas and basic human values
that are the foundation of my personal philosophy.  I have every confidence that
they  will  long  endure at  Vanguard,  for they are the  right  ideas and right
values, unshakable and eternal.
     While Emerson believed that "an institution is the lengthened shadow of one
man," Vanguard today is far greater than any  individual.  The Vanguard crew has
splendidly  implemented  and  enthusiastically  supported our founding ideas and
values, and deserves the credit for a vital role in forging our success over the
years.  It is a  dedicated  crew of fine human  beings,  working  together in an
organization  that is well prepared to press on regardless long after I am gone.
Creating and leading this  enterprise has been an exhilarating  run.  Through it
all,  I've taken the kudos and the blows  alike,  enjoying  every  moment to the
fullest,  and even getting a second chance at life with a heart transplant three
years ago. What more could a man ask?
     While I shall no longer be serving on the Vanguard  Board, I want to assure
you that I will remain  vigorous and active in a newly  created  Vanguard  unit,
researching the financial markets, writing, and speaking. I'll continue to focus
whatever  intellectual  power and  ethical  strength  I possess on my mission to
assure that mutual fund investors everywhere receive a fair shake. In the spirit
of Robert Frost:

     BUT I HAVE PROMISES TO KEEP,  AND MILES TO GO BEFORE I SLEEP,  AND MILES TO
GO BEFORE I SLEEP.

     You have given me your loyalty and friendship over these long years,  and I
deeply  appreciate  your  thousands  of letters of support.  For my part, I will
continue to keep an eagle eye on your  interests,  for you deserve no less.  May
God bless you all, always.

/S/
JCB

CONTENTS

REPORT FROM THE CHAIRMAN .................1
THE MARKETS IN PERSPECTIVE ...............5
REPORT FROM THE ADVISER ..................7
PERFORMANCE SUMMARY ......................9
FUND PROFILE ............................10
FINANCIAL STATEMENTS ....................12
REPORT OF INDEPENDENT ACCOUNTANTS .......20

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[PHOTO OF JOHN J. BRENNAN]
JOHN J. BRENNAN

REPORT FROM THE CHAIRMAN

Concerns  about higher  inflation  took hold of the bond market during the early
months of Vanguard  Massachusetts  Tax-Exempt  Fund's 1999 fiscal year and never
loosened  their grip.  The resulting  decline in prices made the 12 months ended
November 30 a difficult period for fixed-income  investors.  Our fund, which was
launched nine days into the 12-month period,  registered a total return of -3.4%
through  November 30, a result that was slightly better than that of its average
peer, but behind that of its unmanaged benchmark index.

- ------------------------------------------------
                           TOTAL RETURNS
                     DECEMBER 9, 1998, THROUGH

                          NOVEMBER 30, 1999

- ------------------------------------------------
Vanguard Massachusetts
  Tax-Exempt Fund              -3.4%

Average Massachusetts
  Municipal Debt Fund*         -3.7
- ------------------------------------------------
*Derived from data provided by Lipper Inc.

     The table at right  presents the fund's total return  (capital  change plus
reinvested  dividends)  since its December 1998 inception along with that of our
average mutual fund  competitor.  Our total return is based on a decrease in net
asset value from  $10.00 per share on  December  9, 1998,  to $9.25 per share on
November 30, 1999,  and is adjusted for dividends  totaling $0.42 per share paid
from net investment  income. At the end of the fiscal year, our fund's yield was
5.17%, up from 4.64% six months earlier.
     For  Massachusetts  residents,  income  earned by the fund is  exempt  from
federal and Massachusetts  state income taxes, but may be subject to local taxes
and to the alternative minimum tax.

FINANCIAL MARKETS IN REVIEW

The 12 months ended  November 30 featured  plenty of positive  economic news, as
well as a good  deal of  apprehension  over how long  the  good  times  can last
without  touching  off  higher  inflation.  The  U.S.  economy  expanded  at  an
inflation-adjusted  rate of 4.3%  from the  third  quarter  of 1998 to the third
quarter of 1999, the nation's  unemployment rate hovered near record-low levels,
and inflation barely stirred.
     However,  the nagging concern that inflation would soon accelerate resulted
in a steady rise in interest  rates  during the fiscal year.  The rate  increase
merely  restrained the stock market,  which managed an impressive  advance,  but
dealt a heavy blow to bond prices,  which  suffered their worst year since 1994.
The Federal Reserve Board went along with the uptrend in interest rates,  hiking
its target for  short-term  interest  rates by 25 basis points on three separate
occasions  in an attempt to head off  inflation  it believes  could  result from
strong growth and tight labor markets.
     Technology  companies  propelled  the U.S.  stock  market  higher,  and the
Standard & Poor's 500 Index, which is dominated by large-capitalization  stocks,
returned  20.9%--the index's fifth straight year of returns higher than 20%. The
broad market,  as represented by the Wilshire 5000 Total Market Index,  advanced
an even higher  22.4%,  but a large  portion of the gain was  concentrated  in a
relatively  small  number of stocks.  Many  value-oriented  stocks were left far
behind.

                                       1

<PAGE>

     The yield of the 30-year U.S. Treasury bond ended the fiscal year at 6.29%,
up 123 basis points (1.23 percentage points) from its starting point of 5.06% on
November 30, 1998. The yield of 3-month U.S.  Treasury bills climbed to 5.30% on
balance,  from 4.48%. Yields of high-quality,  long-term municipal bonds climbed
nearly a full  percentage  point,  from 4.89% when the period  began to 5.87% on
November 30, 1999. Yields of top-grade  (MIG-1) 3-month notes,  which react more
quickly to changes in short-term interest rates, rose from 2.95% to 3.80%.
     The Lehman  Brothers 10 Year  Municipal  Bond Index,  a good measure of the
long-term  municipal market,  recorded a return of -0.4% during our fiscal year.
Long-term bonds suffer more when interest rates are rising, just as they benefit
more from a decline in interest rates.
     Municipal  bonds  performed  well  early  in the  1999  fiscal  year as new
issuance  dropped off from 1998's  near-record  levels and yields  remained high
relative to  Treasuries.  But their relative  performance  faltered later in the
period because many investors were attracted to corporate bonds.
     At the end of the fiscal  year,  the  spread  between  yields of  long-term
Treasuries  and long-term  munis stood at just 42 basis points (0.42  percentage
point).  This is an extremely  narrow gap, given that the income from Treasuries
is subject to federal  income taxes (but not state  taxes),  while income from a
state-specific municipal bond fund is fully exempt from federal and state taxes.
On November 30, the yield of a top-quality,  long-term  municipal bond was equal
to about 93% of the yield of the 30-year U.S. Treasury bond.  Historically,  the
ratio has been about 84%.

FISCAL 1999 PERFORMANCE OVERVIEW

The -3.4% return of Vanguard  Massachusetts  Tax-Exempt Fund was slightly better
than the -3.7% return of the average  Massachusetts  municipal bond fund,  which
has lower average credit quality than our fund but a similar  average  maturity.
Our return, however, was 2 percentage points behind that of the unmanaged Lehman
Municipal  Bond Index.
     Though our fund earned an income  return of 4.1%, a price  decline of -7.5%
engendered  by the rise in interest  rates pulled our total return into negative
territory  for the year.  Our  performance  advantage  over our average peer was
primarily  the result of our lower  costs.  The  Lehman  Index,  which  includes
municipal  bonds from across the  country,  is a  notoriously  tough  competitor
because it does not incur the "real world"  operating  expenses and  transaction
costs that all  mutual  funds  must  bear.  The index also has a slightly  lower
average  duration than your fund,  making it slightly less sensitive to interest
rate changes--an advantage during fiscal 1999.
     Though the rise in  interest  rates  during the past 12 months was to blame
for the poor bond  returns,  a slide in rates just one year ago provided a boost
to bond prices and returns.  The simple lesson is that  interest  rates rise and
fall,  sometimes gradually and sometimes sharply. All bond investors should know
that over long periods,  the ups and downs in interest rates tend to offset each
other,  leaving a bond fund's interest income as the chief source of return. And
considering that interest paid on munis today is considerably higher than a year
ago, it would seem that tax-exempt securities have become more attractive.  At a
yield of about 5.1% compounded annually,  money doubles in a little more than 14
years, or more than two years sooner than at 4.3%.

                                       2

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     Our fund has an expense ratio  (annual  expenses as a percentage of average
net  assets)  of  0.20%,  a  fraction  of  the  1.16%  charged  by  the  average
Massachusetts  tax-exempt  fund.  Because  fund  operating  costs  are  deducted
directly from the income earned by a bond fund, our fund has a significant  edge
in its quest to provide returns that are superior to those of similar funds. The
combination  of our cost advantage and skillful  management by Vanguard's  Fixed
Income Group has benefited our shareholders  over the fund's brief life span and
we expect it to continue to do so in the future.

THE MUNICIPAL BOND TAX ADVANTAGE

For  Massachusetts  residents,  the  income  earned by our fund is  exempt  from
federal,  state,  and, in most cases,  local income  taxes.  At current  yields,
investors in long-term municipal bonds who are taxed at the highest marginal tax
rate (39.6%) can earn an astounding 55% more after-tax income than they could in
comparable long-term U.S. Treasury bonds. For Massachusetts taxpayers subject to
the highest tax rates,  a yield of 5.9% on a  tax-exempt  long-term  bond is the
equivalent of a 9.8% taxable yield.

- ---------------------------------------------------------------
                              ILLUSTRATION OF INCOME FROM
                           A HYPOTHETICAL $100,000 INVESTMENT
- ---------------------------------------------------------------
Taxable gross income                     $6,300
Less taxes (39.6%)                       (2,500)
Net after-tax income                      3,800
- ---------------------------------------------------------------
Tax-exempt income                        $5,900
- ---------------------------------------------------------------
Tax-exempt income advantage              $2,100
- ---------------------------------------------------------------
Percentage advantage                        55%
- ---------------------------------------------------------------
This  illustration  assumes current yields (as of November 30, 1999) of 6.3% for
long-term  U.S.  Treasury  bonds  and 5.9%  for  long-term  municipals.  The tax
adjustment  assumes a typical itemized tax return based on a federal tax rate of
39.6%.  Income from U.S.  Treasuries is not subject to state taxes;  local taxes
are not  considered.  The  illustration  is not  intended  to  represent  future
results.

     This  remarkable  advantage  is  illustrated  in the  table at left,  which
compares the annual net income earned on U.S. Treasury and tax-exempt securities
as of November 30, 1999, assuming a $100,000 investment.
     There is an important  distinction  between  state-specific  municipal bond
funds and U.S. Treasury bonds.  Treasury securities are backed by the full faith
and credit of the U.S.  government and therefore have unmatched  credit quality.
Also, municipal bond funds that confine their investments to a single state lack
the diversification that comes from spreading  investments among various states,
which may be subject to different economic conditions and different risks.

IN SUMMARY

During a period when the stock market seems invulnerable,  it's easy to overlook
the  merits of bonds.  However,  bond funds must not be judged by how well their
returns  stack up against  those of stock funds in a particular  period,  but by
what they can add to a balanced investment program,  namely,  current income and
relative stability.  Vanguard  Massachusetts  Tax-Exempt Fund can provide a high
level of after-tax  income,  particularly for those in high income tax brackets,
and especially  compared to the income  available  from the stock market,  whose
average  dividend yield is less than 1.5%. And because the  performance of bonds
often  differs  from  that of  equities,  a  commitment  to  bonds  is a  useful
diversifier that can help smooth the sometimes-volatile returns of stocks.

                                       3

<PAGE>

     We advise investors to hold balanced portfolios of stock funds, bond funds,
and short-term  reserves in proportions  suitable to their own investment goals,
time horizon,  and tolerance  for risk.  Once you have such a plan in place,  we
advise you to stick with it through good times and bad.

John J. Brennan
Chairman and Chief Executive Officer

December 27, 1999

- --------------------------------------------------------------------------------
A Note of Thanks to Our Founder
As you may have read on the inside  cover of our report,  our  founder,  John C.
Bogle,  is retiring  December  31, 1999,  as Senior  Chairman of our Board after
nearly 25 years of devoted  service to Vanguard and our  shareholders.  Vanguard
investors  have Jack to thank for  creating a truly  mutual  mutual fund company
that operates solely in the interest of its fund  shareholders.  And mutual fund
investors  everywhere have benefited from his energetic  efforts to improve this
industry.  Finally, on a personal note, I am forever grateful to Jack for giving
me the opportunity to join this great company in 1982.
- --------------------------------------------------------------------------------

                                       4

<PAGE>

THE MARKETS IN PERSPECTIVE
YEAR ENDED NOVEMBER 30, 1999

Strong economic  expansion sent global stock markets charging higher but dealt a
blow to bond  prices  during  the fiscal  year  ended  November  30,  1999.  The
powerhouse U.S. economy led the global growth parade, joined by Asian, European,
and Latin American economies that had slumped or stagnated in 1998.
     Interest  rates rose sharply as investors  and monetary  policymakers  grew
increasingly  worried that such strong  economic growth would cause inflation to
surge.  Although the rise in rates caused bond prices to fall,  it only tempered
the stock market's advance.

U.S. STOCK MARKETS

Against  the  backdrop  of a booming  economy,  U.S.  companies  reported  solid
increases in earnings  during the fiscal  year.  The  nation's  economic  output
increased  at an  inflation-adjusted  rate of 4.3%--a very rapid pace for such a
large, mature economy.  Consumer spending, which accounts for roughly two-thirds
of economic activity, powered the expansion.  Americans spent freely, encouraged
by rising  wealth  from a long  bull  market,  a hot job  market,  and  climbing
incomes.

- --------------------------------------------------------------------------------
                                        AVERAGE ANNUAL RETURNS
                                    PERIODS ENDED NOVEMBER 30, 1999

- --------------------------------------------------------------------------------
                                     1 Year    3 Years     5 Years
- --------------------------------------------------------------------------------
STOCKS
S&P 500 Index                         20.9%     24.3%       27.5%
Russell 2000 Index                    15.7      10.1        14.8
Wilshire 5000 Index                   22.4      22.6        25.6
MSCI EAFE Index                       21.4      12.3        11.4
- --------------------------------------------------------------------------------
BONDS
Lehman Aggregate Bond Index            0.0%      5.6%        8.0%
Lehman 10 Year Municipal Bond Index   -0.4       4.8         7.6
Salomon Smith Barney 3-Month
    U.S. Treasury Bill Index           4.7       5.0         5.2
- --------------------------------------------------------------------------------
OTHER
Consumer Price Index                   2.6%      2.0%        2.4%
- --------------------------------------------------------------------------------

     The stock  market,  as measured by the  Wilshire  5000 Index,  gained 22.4%
overall.  For a change,  mid-capitalization  and small-cap stocks outpaced their
large-cap  brethren.  The large-cap S&P 500 Index,  which accounts for more than
75% of the U.S. stock  market's  total value,  gained 20.9% during the year; the
rest of the market (as measured by the Wilshire 4500 Index) gained 29.0%.
     Increasingly  optimistic  expectations for future  corporate  earnings more
than offset the negative  effects of rising  interest  rates during fiscal 1999.
Higher rates often hurt stock prices because many investors use current rates to
discount the value of a stock's projected earnings and dividends. The higher the
interest rate, the more future earnings are  discounted,  and the less investors
will pay for the stock now.
     Because of a  remarkable  surge in prices  for  technology  stocks,  growth
stocks again  outperformed value stocks during the past year. Within the S&P 500
Index, growth stocks--characterized by high prices in relation to earnings, book
value, and  dividends--recorded  a 28.5% return,  16 percentage points above the
12.5% return for value  stocks.  The disparity was even greater in the small-cap
segment of the market;  growth stocks  within the  small-cap  Russell 2000 Index
gained 32.7%, while value stocks posted a -1.4% return.
     Technology  stocks within the S&P 500 Index gained 66%.  QUALCOMM posted an
eye-popping  1,200% return, and a number of  computer-related  stocks doubled or
tripled in

                                       5

<PAGE>

price,  including Sun  Microsystems  (+257%),  Apple  Computer  (+206%),  Oracle
(+197%), Gateway (+172%), Texas Instruments (+152%), and Cisco Systems (+136%).
     Big gains for wireless  telecommunications  and cable-TV stocks powered the
utilities  category  to an overall  gain of nearly  28%.  The  producer-durables
group, which includes some technology-related  manufacturers as well as aircraft
and  equipment  makers,  gained 27%. Oil  exploration  and service  firms in the
"other energy"  category  posted a 26% return,  assisted by a jump in prices for
oil and natural gas.
     The year's worst-performing sector was consumer staples (down nearly -12%).
This group suffered as severe price  competition and a stronger dollar in Europe
crimped profits for many food and beverage makers, and the specter of litigation
costs caused tobacco stocks to slump. The auto &  transportation  group declined
- -2% overall, with airline stocks hurt by rising prices for jet fuel.

U.S. BOND MARKETS

Stock  investors  may cheer a  fast-growing  economy,  but rapid growth tends to
worry   bond   investors.   Early  in  the   fiscal   year,   inflation   seemed
dormant--plunging  oil prices had taken  commodity  price  indexes to the lowest
point in a  quarter-century.  But as the  world  economy  began  hitting  on all
cylinders,  the bond  market  feared that a minuscule  U.S.  unemployment  rate,
rising  commodity  prices,  and capacity  constraints  would cause  inflation to
accelerate.  Although oil prices were up nearly 150% during the fiscal year, the
overall  price level,  as measured by the Consumer  Price Index,  increased by a
moderate 2.6%.
     The Federal Reserve Board, anticipating price pressures, abandoned its bias
toward easier monetary  policy,  and by mid-year was boosting  interest rates to
try to  throttle  back the  economic  engines.  The bond market was ahead of the
Fed--interest  rates began rising sharply in February.  By fiscal year-end,  the
yield of 30-year U.S. Treasury bonds had risen 1.23 percentage points (123 basis
points) to 6.29%. The 10-year Treasury note's yield rose 148 basis points,  from
4.71% to  6.19%.  The rise in  short-term  rates  was more  restrained;  3-month
Treasury bill yields were up 82 basis points to 5.30% at fiscal year-end.
     Bond prices fall when interest  rates rise,  and long-term  bond prices are
most sensitive to changing  rates.  Long-term  Treasury bond prices fell by more
than -13%, resulting in total returns of -8%. The Lehman Aggregate Bond Index, a
measure of the  overall  taxable  bond  market,  which has an  intermediate-term
structure  on average,  broke even on the year,  as interest  income of 6.2% was
offset by price declines.  The damage to municipal bond prices was not as severe
as for Treasuries,  and the intermediate-term Lehman 7 Year Municipal Bond Index
recorded a price decline of -3.7% and a total return of 0.5%.

INTERNATIONAL STOCK MARKETS

International  markets had a strong year,  with European stocks gaining 21.9% in
local-currency  terms  and  Pacific-region   stocks  advancing  30.2%.  However,
currency effects significantly altered the returns to U.S.-based investors.  The
U.S.  dollar rose in value  against most  European  currencies  but fell sharply
against the Japanese  yen. As a result,  returns from Europe  plunged to 9.8% in
dollar terms while returns from the Pacific soared to 51.0%.
     Overall,  U.S. investors earned 21.4% in the major developed  international
markets,  as  measured  by the  Morgan  Stanley  Capital  International  Europe,
Australasia,  Far East (EAFE)  Index.  The bull markets in most nations  stemmed
from renewed  optimism that economic growth would continue to accelerate.  Japan
and the rest of Asia,  which were hit hardest by currency and economic crises in
1997 and 1998, saw the biggest stock gains.
     Emerging  markets,  as measured by the Select Emerging  Markets Free Index,
gained 37.1% in  U.S.-dollar  terms,  as investors  regained an appetite for the
considerable risks of smaller markets.

                                       6

<PAGE>

REPORT FROM THE ADVISER

Interest  rates rose during the 12 months ended  November  30, 1999,  the fiscal
year for Vanguard Massachusetts Tax-Exempt Fund. The rise was principally due to
investors' fears about the impact of the strong economy and the low unemployment
rate on inflation. In the past, these factors have caused inflation to increase,
and many investors expect that history will repeat itself at some point. So far,
employment  costs and consumer price indexes have not risen  substantially,  but
each  number is being  closely  watched  for any  upsurge.  A desire to head off
inflation and concerns  about the booming  stock market led the Federal  Reserve
Board to increase interest rates three times during the fiscal year, raising the
federal funds rate by a total of 0.75 percentage point.
     As you might expect, yields of insured long-term municipal bonds rose along
with yields on U.S.  Treasury bonds during fiscal 1999. During the first half of
the  year,   long-term  insured   municipals   performed  better  than  Treasury
securities;  municipal  yields  increased by less than half as much as those for
long-term  Treasuries.  But the  relative  performance  flip-flopped  during the
second half, when yields on long-term  municipals increased almost 11/2 times as
much as those on long  Treasuries.  Over the full fiscal year,  the yield on the
benchmark  30-year U.S. Treasury bond rose by 1.23 percentage points (from 5.06%
to 6.29%),  while the yield of a similar AAA-rated municipal bond rose by nearly
1 percentage point (from 4.89% to 5.87%).
     Two factors account for the first-half  outperformance of insured municipal
bonds and for their later  underperformance.  First, as the fiscal year began in
December 1998, insured municipal bonds were especially  attractive to investors,
because the AAA-rated insured municipal's  tax-exempt yield of 4.9% was equal to
97% of the yield of a 30-year Treasury.  For an investor in the top marginal tax
bracket of 39.6%,  that 4.9% yield was  equivalent to an 8.1% yield on a taxable
bond.  By May  31,  the  middle  of  our  fiscal  year,  the  long-term  insured
municipal's yield was about 89% as high as the 30-year Treasury's yield,  making
insured  municipal  bonds somewhat less alluring.  The second factor was that in
the second  half of the fiscal  year,  corporate  bond  yields had become  quite
attractive,  providing stiff competition for the bond investor's dollar.  During
this  period  the  corporate  bond  market  encountered  the same type of supply
imbalance  that the municipal  market had seen in fiscal 1998,  as  corporations
rushed bond issues to market to complete their  financing  before the end of the
century.  The result was  attractively  high  yields on  corporate  debt,  which
enticed  some large  institutional  buyers away from the  municipal  market.  At
year-end,  yields on long-term  insured municipal bonds had risen in relation to
those on Treasuries,  and 30-year munis offered yields equal to 94% of yields on
30-year Treasuries.
     The  municipal  market  was aided by the fact that the supply of new issues
was lower  during 1999 than in 1998.  Through  November,  issuance of  municipal
securities in 1999  amounted to $207  billion,  down more than 20% from the same
period in 1998.  The main  reason  for the  decline  was a 53%  decrease  in the
issuance  of  refunding  bonds,  whose  proceeds  are  used  to pay  off  older,
higher-coupon  bonds.  Because of the rise in

- --------------------------------------------------------------------------------
INVESTMENT PHILOSOPHY
The adviser  believes that the fund,  while operating within stated maturity and
stringent  quality  targets,  can achieve a high level of current income that is
exempt from federal and Massachusetts  income taxes by investing in high-quality
securities issued by Massachusetts state, county, and municipal governments.
- --------------------------------------------------------------------------------

                                       7

<PAGE>

interest  rates,  refunding  issues  generally  did not make fiscal sense during
1999.  As the economy  continued  to expand,  the supply of bonds issued for new
projects was unchanged from 1998.

THE FUND'S FISCAL-YEAR PERFORMANCE

Long-term  bonds  typically are hurt most by rising interest rates. As a result,
the Massachusetts Tax-Exempt Fund suffered a price decline of -7.5% and posted a
total return of -3.4%.  A negative  return is not good news,  but our result was
moderately  ahead  of the  -3.7%  total  return  for the  average  Massachusetts
municipal bond fund.
     We  scrutinize  various  bond  maturities  to find the best values for each
level of interest rate risk. Our focus on keeping expenses low is always helpful
and is critical in delivering  above-average  tax-exempt income,  since expenses
are  deducted  directly  from a bond fund's  interest  income.  Our  emphasis on
keeping the fund invested in high-quality  securities  benefits our shareholders
by reducing  credit risk.  The overall  effect of  combining  low costs and high
quality is to provide to our  shareholders  both superior  yields and low credit
risk, the ingredients of excellent risk-adjusted returns.

Ian A. MacKinnon, Managing Director
Christopher M. Ryon, Principal
Pamela Wisehaupt Tynan, Principal
Daniel S. Solender, Manager
Vanguard Fixed Income Group

December 18, 1999

                                       8

<PAGE>

PERFORMANCE SUMMARY
MASSACHUSETTS TAX-EXEMPT FUND

All of the data on this page represent past performance, which cannot be used to
predict  future returns that may be achieved by the fund.  Note,  too, that both
share  price and  return  can  fluctuate  widely.  An  investor's  shares,  when
redeemed, could be worth more or less than their original cost.

TOTAL INVESTMENT RETURNS:
DECEMBER 9, 1998-NOVEMBER 30, 1999
- ---------------------------------------------
       MASSACHUSETTS TAX-EXEMPT FUND  LEHMAN*
FISCAL   CAPITAL    INCOME    TOTAL    TOTAL
PERIOD   RETURN     RETURN   RETURN   RETURN
- ---------------------------------------------
1999      -7.5%      4.1%    -3.4%     -1.4%
- ---------------------------------------------
*Lehman Municipal Bond Index.
See Financial  Highlights  table on page 17 for dividend
information  since the fund's inception.

CUMULATIVE PERFORMANCE: DECEMBER 9, 1998-NOVEMBER 30, 1999
- --------------------------------------------------------------------------------
[GRAPH]
- --------------------------------------------------------------------------------
                                       TOTAL RETURNS PERIOD
                                      ENDED NOVEMBER 30, 1999
                                      -----------------------  FINAL VALUE OF A
                                            SINCE INCEPTION   $10,000 INVESTMENT
- --------------------------------------------------------------------------------
Massachusetts Tax-Exempt Fund                    -3.38%             $9,662
Average Massachusetts Municipal Fund*            -3.73               9,627
Lehman Municipal Bond Index                      -1.39               9,861
- --------------------------------------------------------------------------------
*Derived from data provided by Lipper Inc.


TOTAL RETURN: PERIOD ENDED SEPTEMBER 30, 1999*
- --------------------------------------------------------------------------------
                                                            SINCE INCEPTION
                                      INCEPTION    -----------------------------
                                        DATE         CAPITAL    INCOME     TOTAL
- --------------------------------------------------------------------------------
Massachusetts Tax-Exempt Fund         12/9/1998       -6.60%     3.36%    -3.24%
- --------------------------------------------------------------------------------
*SEC rules  require that we provide this total  return  information  through the
latest calendar quarter.

                                       9

<PAGE>

FUND PROFILE
MASSACHUSETTS TAX-EXEMPT FUND

This Profile  provides a snapshot of the fund's  characteristics  as of November
30, 1999, compared where appropriate to an unmanaged index. Key elements of this
Profile are defined on page 11.

FINANCIAL ATTRIBUTES
- -----------------------------------------------
                  MASSACHUSETTS         LEHMAN
                     TAX-EXEMPT         INDEX*
- -----------------------------------------------
Number of Issues             90         52,144
Yield                      5.2%             --
Yield to Maturity          5.4%             --
Average Coupon             5.1%           5.5%
Average Maturity     13.9 years     13.0 years
Average Quality              AA            AA+
Average Duration      8.6 years      7.5 years
Expense Ratio           0.20%**             --
Cash Reserves              1.5%             --

 *Lehman Municipal Bond Index.
**Annualized


INVESTMENT FOCUS
- -----------------------------------------------
[GRID]
AVERAGER MATURITY          Long
CREDIT QUALITY             High


DISTRIBUTION BY CREDIT QUALITY
(% OF PORTFOLIO)
- -----------------------------------------------
AAA                                   68.1%
AA                                    18.1
A                                      0.9
BBB                                   12.9
BB                                     0.0
B                                      0.0
- -----------------------------------------------
Total                                100.0%


DISTRIBUTION BY MATURITY
(% OF PORTFOLIO)
- -----------------------------------------------
Under 1 Year                           8.9%
1-5 Years                              2.8
5-10 Years                            21.5
10-20 Years                           49.3
20-30 Years                           16.0
Over 30 Years                          1.5
- -----------------------------------------------
Total                                100.0%

                                       10

<PAGE>

AVERAGE COUPON. The average interest rate paid on the securities held by a fund.
It is expressed as a percentage of face value.

AVERAGE  DURATION.  An  estimate  of how much a bond  fund's  share  price  will
fluctuate in response to a change in interest  rates. To see how the price could
shift,  multiply the fund's  duration by the change in rates.  If interest rates
rise by one percentage point, the share price of a fund with an average duration
of five years  would  decline  by about 5%. If rates  decrease  by a  percentage
point, the fund's share price would rise by 5%.

AVERAGE  MATURITY.  The average  length of time until bonds held by a fund reach
maturity  (or are  called) and are  repaid.  In general,  the longer the average
maturity, the more a fund's share price will fluctuate in response to changes in
market interest rates.

AVERAGE QUALITY.  An indicator of credit risk, this figure is the average of the
ratings assigned to a fund's securities holdings by credit-rating  agencies. The
agencies make their  judgment after  appraising an issuer's  ability to meet its
obligations.  Quality is graded on a scale,  with Aaa or AAA indicating the most
creditworthy  bond  issuers and A-1 or MIG-1  indicating  the most  creditworthy
issuers of money market securities.

CASH  RESERVES.  The  percentage  of a  fund's  net  assets  invested  in  "cash
equivalents"--highly  liquid,  short-term,   interest-bearing  securities.  This
figure does not include  cash  invested in futures  contracts  to simulate  bond
investment.

DISTRIBUTION BY CREDIT QUALITY.  This breakdown of a fund's securities by credit
rating can help in gauging the risk that  returns  could be affected by defaults
or other credit problems.

DISTRIBUTION BY MATURITY.  An indicator of interest-rate  risk. In general,  the
higher the  concentration  of  longer-maturity  issues,  the more a fund's share
price will fluctuate in response to changes in interest rates.

EXPENSE  RATIO.  The  percentage of a fund's  average net assets used to pay its
annual  administrative  and advisory  expenses.  These expenses  directly reduce
returns to investors.

INVESTMENT  FOCUS.  This  grid  indicates  the  focus  of a fund in terms of two
attributes: average maturity (short, medium, or long) and average credit quality
(high, medium, or low).

NUMBER OF ISSUES.  An indicator of  diversification.  The more separate issues a
fund holds,  the less  susceptible  it is to a price  decline  stemming from the
problems of a particular issue.

YIELD.  A  snapshot  of a fund's  interest  income.  The yield,  expressed  as a
percentage  of the fund's net asset  value,  is based on income  earned over the
past 30 days and is annualized, or projected forward for the coming year.

YIELD  TO  MATURITY.  The  rate of  return  an  investor  would  receive  if the
securities held by a fund were held to their maturity dates.

                                       11

<PAGE>

FINANCIAL STATEMENTS
NOVEMBER 30, 1999

STATEMENT OF NET ASSETS

This Statement  provides a detailed list of the fund's  municipal bond holdings,
including each security's  market value on the last day of the reporting  period
and  information  on credit  enhancements  (insurance  or  letters  of  credit).
Securities are grouped and  subtotaled  according to their insured or noninsured
status.  Other assets are added to, and  liabilities  are  subtracted  from, the
value of Total Municipal Bonds to calculate the fund's Net Assets.  Finally, Net
Assets are divided by the outstanding  shares of the fund to arrive at its share
price, or Net Asset Value (NAV) Per Share.
     At the end of the Statement of Net Assets, you will find a table displaying
the  composition of the fund's net assets on both a dollar and per-share  basis.
Undistributed Net Investment Income is usually zero because the fund distributes
its net income to  shareholders  as a dividend each day. Any realized gains must
be distributed  annually,  so the bulk of net assets consists of Paid in Capital
(money invested by shareholders). The balance shown for Accumulated Net Realized
Gains usually approximates the amount available to distribute to shareholders as
taxable  capital gains as of the statement  date, but may differ because certain
investments or transactions may be treated  differently for financial  statement
and tax purposes. Any Accumulated Net Realized Losses, and any cumulative excess
of  distributions  over net realized  gains,  will appear as negative  balances.
Unrealized  Appreciation  (Depreciation) is the difference  between the value of
the fund's  investments  and their cost,  and reflects the gains  (losses)  that
would be  realized  if the fund  were to sell  all of its  investments  at their
statement-date values.

<TABLE>
- ----------------------------------------------------------------------------------------------------------------------------
<S>                                                            <C>           <C>                   <C>             <C>
                                                                                                       FACE          MARKET
                                                                               MATURITY              AMOUNT          VALUE*
MASSACHUSETTS TAX-EXEMPT FUND                                  COUPON              DATE               (000)           (000)
- ----------------------------------------------------------------------------------------------------------------------------
MUNICIPAL BONDS (98.5%)
- ----------------------------------------------------------------------------------------------------------------------------
ISSUER INSURED (63.6%)
Beverly MA GO                                                   4.75%          9/1/2016 (2)        $  1,025        $    904
Beverly MA GO                                                   4.80%          9/1/2017 (2)           1,080             950
Boston MA GO                                                    4.50%          1/1/2000 (3)           2,000           2,001
Chelsea MA GO                                                   5.50%         6/15/2009 (2)              90              92
Easton MA GO                                                    5.00%         10/1/2017 (1)           1,205           1,095
Haverhill MA GO                                                 5.00%          6/1/2016 (3)           1,420           1,303
Lynn MA GO                                                      5.25%         2/15/2008 (1)           2,270           2,305
Lynn MA GO                                                      5.25%          6/1/2013 (2)           1,530           1,492
Lynn MA Water & Sewer Rev.                                     5.125%         12/1/2017 (4)           2,000           1,846
Malden MA GO                                                    5.00%         10/1/2015 (2)             500             461
Marlborough MA GO                                               6.75%         6/15/2008 (3)           1,400           1,568
Massachusetts Dev. Finance Agency Rev. (Brooks School)         5.125%          7/1/2015 (1)             560             527
Massachusetts Dev. Finance Agency Rev. (Brooks School)         5.125%          7/1/2016 (1)             585             545
Massachusetts Dev. Finance Agency Rev. (Emerson College)        5.25%          1/1/2007 (2)           2,000           2,035
Massachusetts Dev. Finance Agency Rev. VRDO (Brooks School)     3.80%         12/2/1999 (1)           3,700           3,700
Massachusetts Educ. Financing Auth. Educ. Loan Rev.             4.55%          7/1/2009 (2)           2,000           1,869
Massachusetts Educ. Financing Auth. Educ. Loan Rev.             4.65%          7/1/2010 (2)           1,500           1,398
Massachusetts Frontier Regional School Dist. GO                 5.00%         6/15/2017 (2)           1,000             909
Massachusetts GO                                                5.25%          6/1/2014 (3)              80              77
Massachusetts Health & Educ. Fac. Auth. Rev. (Bentley College)  5.00%          7/1/2023 (1)           2,500           2,181
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Berklee College of Music)                                     5.00%         10/1/2017 (1)           1,250           1,136
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Boston Medical Center)                                        5.00%          7/1/2019 (1)              50              44
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Boston Medical Center)                                        5.25%          7/1/2012 (1)             150             146
Massachusetts Health & Educ. Fac. Auth. Rev. (Brandeis Univ.)   5.25%         10/1/2016 (1)             550             519
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Harvard Pilgrim Health)                                       4.75%          7/1/2022 (4)           1,000             823
</TABLE>

                                       12

<PAGE>

<TABLE>
- ----------------------------------------------------------------------------------------------------------------------------
<S>                                                            <C>           <C>                   <C>             <C>
                                                                                                       FACE          MARKET
                                                                               MATURITY              AMOUNT          VALUE*
                                                               COUPON              DATE               (000)           (000)
- ----------------------------------------------------------------------------------------------------------------------------
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Harvard Pilgrim Health)                                       5.00%          7/1/2018 (4)        $     80        $     70
Massachusetts Health & Educ. Fac. Auth. Rev. (Lahey Clinic)     7.85%          7/1/2003 (1)             360             397
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Massachusetts General Hosp.)                                  6.25%          7/1/2012 (2)             500             543
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Northeastern Univ.)                                           5.00%         10/1/2017 (1)             970             880
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Northeastern Univ.)                                           5.00%         10/1/2022 (1)           1,750           1,534
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Partners Healthcare System)                                   5.25%          7/1/2003 (4)              80              82
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Partners Healthcare System)                                   5.25%          7/1/2015 (1)             390             367
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Univ. of Massachusetts Memorial)                              5.00%          7/1/2018 (2)             550             484
Massachusetts Health & Educ. Finance Auth.
 (Catholic Healthcare East)                                     5.00%        11/15/2028 (2)           3,250           2,744
Massachusetts Housing Finance Agency Single Family Housing Rev. 5.15%         12/1/2012 (2)           3,300           3,089
Massachusetts Ind. Finance Agency Rev.
 (College of the Holy Cross)                                    5.00%          9/1/2023 (1)           1,575           1,373
Massachusetts Port Auth. Rev.                                   5.25%          7/1/2008 (4)           2,000           2,008
Massachusetts Port Auth. Rev. (US Airways Project)              5.25%          9/1/2010 (1)           1,380           1,372
Massachusetts Port Auth. Rev. (US Airways Project)              5.25%          9/1/2011 (1)           1,480           1,461
Massachusetts Port Auth. Rev. (US Airways Project)              5.25%          9/1/2012 (1)           1,535           1,499
Massachusetts Port Auth. Rev. (US Airways Project)              5.25%          9/1/2013 (1)           1,610           1,552
Massachusetts Special Obligation Rev.                           5.50%          6/1/2010 (2)           3,150           3,219
Massachusetts Turnpike Auth. Rev. (Metro. Highway System)       5.00%          1/1/2027 (1)           2,500           2,152
Massachusetts Turnpike Auth. Rev. (Metro. Highway System)       5.00%          1/1/2037 (1)           2,000           1,672
Massachusetts Turnpike Auth. Rev. (Metro. Highway System)      5.125%          1/1/2023 (1)             500             445
Massachusetts Turnpike Auth. Rev. (Metro. Highway System)       5.25%          1/1/2029 (1)              60              54
Massachusetts Water Resources Auth. Rev.                        5.50%         11/1/2006 (3)(Prere.)     120             126
Massachusetts Water Resources Auth. Rev.                        5.50%          8/1/2014 (4)           3,250           3,256
Methuen MA GO                                                  4.875%         5/15/2017 (3)           2,080           1,847
Methuen MA GO                                                   5.00%         11/1/2014 (3)             450             422
Plymouth County MA COP (Correctional Fac.)                      5.00%         10/1/2007 (2)           1,595           1,600
Plymouth County MA COP (Correctional Fac.)                      5.00%         10/1/2015 (2)           1,000             927
Worcester MA GO                                                 5.00%          8/1/2017 (1)           1,920           1,744
Worcester MA Muni. Purpose Loan                                 5.75%          4/1/2015 (4)           1,000           1,006
OUTSIDE MASSACHUSETTS
Puerto Rico Govt. Dev. Bank VRDO                                3.60%         12/8/1999 (1)           2,400           2,400
Puerto Rico Public Buildings Auth. Public Educ. & Health Fac.   5.75%          7/1/2010 (2)           2,000           2,119
                                                                                                                   ---------
                                                                                                                     72,370
                                                                                                                   ---------
NONINSURED (34.9%)
Boston MA Water & Sewer Comm. Rev.                              5.75%         11/1/2013                 540             557
Massachusetts Bay Transp. Auth.                                5.125%          3/1/2014                  80              76
Massachusetts Bay Transp. Auth.                                 7.00%          3/1/2009               2,000           2,274
Massachusetts Dev. Finance Agency (Suffolk Univ.)               5.85%          7/1/2029               2,000           1,855
Massachusetts Dev. Finance Agency
 (Xaverian Brothers High School)                                5.55%          7/1/2019               1,000             919
Massachusetts Dev. Finance Agency
 (Xaverian Brothers High School)                                5.65%          7/1/2029               1,500           1,358
Massachusetts GO                                                5.25%          9/1/2008               2,850           2,894
Massachusetts GO                                                5.25%          4/1/2011                  80              80
Massachusetts GO                                                5.25%          4/1/2012                  80              79
Massachusetts Grant Anticipation Notes                         5.125%        12/15/2010               1,480           1,472
Massachusetts Grant Anticipation Notes                         5.125%         6/15/2014                 300             286
Massachusetts Grant Anticipation Notes                          5.25%        12/15/2008               2,000           2,033
Massachusetts Grant Anticipation Notes                          5.25%        12/15/2011                 180             179
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Amherst College)                                              5.00%         11/1/2023               1,500           1,311
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Boston College)                                               5.00%          6/1/2018                 200             179
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Caritas Christi Obligated Group)                              5.70%          7/1/2015               5,000           4,494
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Partners Healthcare System)                                   5.25%          7/1/2014               1,000             928
</TABLE>

                                       13

<PAGE>

<TABLE>
- ----------------------------------------------------------------------------------------------------------------------------
<S>                                                            <C>           <C>                   <C>             <C>
                                                                                                       FACE          MARKET
                                                                               MATURITY              AMOUNT          VALUE*
MASSACHUSETTS TAX-EXEMPT FUND                                  COUPON              DATE               (000)           (000)
- ----------------------------------------------------------------------------------------------------------------------------
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Partners Healthcare System)                                   5.25%          7/1/2011            $  2,080        $  2,005
Massachusetts Health & Educ. Fac. Auth. Rev.
 (Partners Healthcare System)                                   5.25%          7/1/2015               3,000           2,746
Massachusetts Health & Educ. Fac. Auth. Rev. VRDO
 (Harvard Univ.)                                                3.71%         12/2/1999                 825             825
Massachusetts Ind. Finance Agency (Refusetech Inc. Project)     6.15%          7/1/2002                 480             491
Massachusetts Ind. Finance Agency (Refusetech Inc. Project)     6.30%          7/1/2005               2,000           2,083
Massachusetts Ind. Finance Agency Rev. (BioMed Research Corp.)  0.00%          8/1/2004                 520             412
Massachusetts Muni. Wholesale Electric Co. Power Supply
 System Rev.                                                    6.75%          7/1/2002 (Prere.)      1,570           1,687
Massachusetts Port Auth. Rev.                                   5.00%          7/1/2018                 500             450
Massachusetts Port Auth. Rev.                                   5.00%          7/1/2027               2,500           2,149
Massachusetts Water Pollution Abatement Trust                  5.125%          8/1/2014                 500             478
Massachusetts Water Resources Auth. Rev.                        5.50%         7/15/2002 (Prere.)         80              82
Massachusetts Water Resources Auth. Rev.                        7.50%          4/1/2000 (Prere.)      1,000           1,031
Rail Connections Inc. MA Rev.                                   5.40%          7/1/2010                 520             504
Rail Connections Inc. MA Rev.                                   5.50%          7/1/2011               1,175           1,135
Rail Connections Inc. MA Rev.                                   6.00%          7/1/2012                 570             565
Rail Connections Inc. MA Rev.                                   6.00%          7/1/2014               1,030           1,009
Univ. of Massachusetts Building Auth. Refunding Rev.           6.875%          5/1/2014               1,000           1,123
                                                                                                                   ---------
                                                                                                                     39,749
                                                                                                                   ---------
- ----------------------------------------------------------------------------------------------------------------------------
TOTAL MUNICIPAL BONDS
 (COST $118,321)                                                                                                    112,119
- ----------------------------------------------------------------------------------------------------------------------------
OTHER ASSETS AND LIABILITIES (1.5%)
- ----------------------------------------------------------------------------------------------------------------------------
Other Assets--Note B                                                                                                  2,244
Liabilities                                                                                                            (522)
                                                                                                                   ---------
                                                                                                                      1,722
- ----------------------------------------------------------------------------------------------------------------------------
NET ASSETS (100%)
- ----------------------------------------------------------------------------------------------------------------------------
Applicable to 12,304,505 outstanding $.001 par value shares of beneficial interest
 (unlimited authorization)                                                                                         $113,841
============================================================================================================================

NET ASSET VALUE PER SHARE                                                                                             $9.25
============================================================================================================================
*See Note A in Notes to Financial Statements.
For key to abbreviations and other references, see below.

- ----------------------------------------------------------------------------------------------------------------------------
AT NOVEMBER 30, 1999, NET ASSETS CONSISTED OF:
- ----------------------------------------------------------------------------------------------------------------------------
                                                                                                     Amount             Per
                                                                                                      (000)           Share
- ----------------------------------------------------------------------------------------------------------------------------
Paid in Capital                                                                                    $121,113           $9.84
Undistributed Net Investment Income                                                                      --              --
Accumulated Net Realized Losses--Note E                                                              (1,070)           (.09)
Unrealized Depreciation--Note F                                                                      (6,202)           (.50)
- ----------------------------------------------------------------------------------------------------------------------------
NET ASSETS                                                                                         $113,841           $9.25
============================================================================================================================
</TABLE>

KEY TO ABBREVIATIONS

COP--Certificate of Participation.
GO--General Obligation Bond.
VRDO--Variable Rate Demand Obligation.
(Prere.)--Prerefunded.

Scheduled principal and interest payments are guaranteed by:
(1) MBIA (Municipal Bond Insurance Association).
(2) AMBAC (Ambac Assurance Corporation).
(3) FGIC (Financial Guaranty Insurance Company).
(4) FSA (Financial Security Assurance).
The insurance does not guarantee the market value of the municipal bonds.

                                       14

<PAGE>

STATEMENT OF OPERATIONS

This Statement  shows interest  earned by the fund during the reporting  period,
and details the operating  expenses charged to the fund. These expenses directly
reduce the amount of  investment  income  available  to pay to  shareholders  as
tax-exempt  income  dividends.  This  Statement  also shows any Net Gain  (Loss)
realized  on the  sale of  investments,  and the  increase  or  decrease  in the
Unrealized  Appreciation  (Depreciation) on investments  during the period. If a
fund  invested  in futures  contracts  during the  period,  the results of these
investments are shown separately.

- --------------------------------------------------------------------------------
                                                                   MASSACHUSETTS
                                                                 TAX-EXEMPT FUND
                                                                DEC. 9, 1998* TO
                                                                   NOV. 30, 1999
                                                                           (000)
- --------------------------------------------------------------------------------
INVESTMENT INCOME
INCOME
   Interest                                                             $ 3,773
                                                                   -------------
      Total Income                                                        3,773
                                                                   -------------
EXPENSES
   The Vanguard Group--Note B
      Investment Advisory Services                                            6
      Management and Administrative                                         129
      Marketing and Distribution                                             10
   Custodian Fees                                                             4
   Auditing Fees                                                              7
   Shareholders' Reports                                                      3
                                                                   -------------
      Total Expenses                                                        159
      Expenses Paid Indirectly--Note C                                       (9)
                                                                   -------------
      Net Expenses                                                          150
- --------------------------------------------------------------------------------
NET INVESTMENT INCOME                                                     3,623
- --------------------------------------------------------------------------------
REALIZED NET (GAIN) LOSS
   Investment Securities Sold                                            (1,250)
   Futures Contracts                                                        180
- --------------------------------------------------------------------------------
REALIZED NET LOSS                                                        (1,070)
- --------------------------------------------------------------------------------
UNREALIZED APPRECIATION (DEPRECIATION)
   Investment Securities                                                 (6,202)
   Futures Contracts                                                         --
- --------------------------------------------------------------------------------
UNREALIZED DEPRECIATION                                                  (6,202)
================================================================================
NET DECREASE IN NET ASSETS RESULTING FROM OPERATIONS                    $(3,649)
================================================================================
*Commencement of operations.

                                       15

<PAGE>

STATEMENT OF CHANGES IN NET ASSETS

This  Statement  shows  how the  fund's  total net  assets  changed  during  the
reporting period. The Operations section summarizes  information detailed in the
Statement of Operations. Because the fund distributes its income to shareholders
each day, the amounts of  Distributions--Net  Investment  Income generally equal
the  net  income   earned  under  the   Operations   section.   The  amounts  of
Distributions--Realized  Capital  Gain may not match the capital  gains shown in
the Operations section,  because distributions are determined on a tax basis and
may be made in a period  different from the one in which the gains were realized
on the financial  statements.  The Capital Share Transactions  section shows the
amount  shareholders  invested in the fund,  either by  purchasing  shares or by
reinvesting  distributions,  and the amounts redeemed. The corresponding numbers
of Shares Issued and Redeemed are shown at the end of the Statement.

- --------------------------------------------------------------------------------
                                                                   MASSACHUSETTS
                                                                 TAX-EXEMPT FUND
                                                                DEC. 9, 1998* TO
                                                                   NOV. 30, 1999
                                                                           (000)
- --------------------------------------------------------------------------------
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS
   Net Investment Income                                               $  3,623
   Realized Net Loss                                                     (1,070)
   Unrealized Depreciation                                               (6,202)
                                                                   -------------
      Net Decrease in Net Assets Resulting from Operations               (3,649)
                                                                   -------------
DISTRIBUTIONS
   Net Investment Income                                                 (3,623)
   Realized Capital Gain                                                     --
                                                                   -------------
      Total Distributions                                                (3,623)
                                                                   -------------
CAPITAL SHARE TRANSACTIONS(1)
   Issued                                                               148,562
   Issued in Lieu of Cash Distributions                                   2,870
   Redeemed                                                             (30,464)
                                                                   -------------
      Net Increase from Capital Share Transactions                      120,968
- --------------------------------------------------------------------------------
   Total Increase                                                       113,696
- --------------------------------------------------------------------------------
NET ASSETS
   Beginning of Period--Note G                                              145
                                                                   -------------
   End of Period                                                       $113,841
================================================================================

(1)Shares Issued (Redeemed)
   Issued                                                                15,185
   Issued in Lieu of Cash Distributions                                     301
   Redeemed                                                              (3,195)
                                                                   -------------
      Net Increase in Shares Outstanding                                 12,291
================================================================================
*Commencement of operations.

                                       16

<PAGE>

FINANCIAL HIGHLIGHTS

This table  summarizes  the  fund's  investment  results  and  distributions  to
shareholders on a per-share  basis. It also presents the fund's Total Return and
shows net  investment  income and expenses as percentages of average net assets.
These data will help you assess:  the  variability  of the fund's net income and
total returns from year to year;  the relative  contributions  of net income and
capital gains to the fund's total return; how much it costs to operate the fund;
and the extent to which the fund tends to distribute  capital  gains.  The table
also  shows the  Portfolio  Turnover  Rate,  a measure of  trading  activity.  A
turnover  rate of 100% means that the  average  security is held in the fund for
one year.

- --------------------------------------------------------------------------------
                                                                   MASSACHUSETTS
                                                                 TAX-EXEMPT FUND
                                                                DEC. 9, 1998* TO
FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD                      NOV. 30, 1999
- --------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD                                     $10.00
- --------------------------------------------------------------------------------
INVESTMENT OPERATIONS
   Net Investment Income                                                   .420
   Net Realized and Unrealized Gain (Loss) on Investments                 (.750)
                                                                   -------------
      Total from Investment Operations                                    (.330)
                                                                   -------------
DISTRIBUTIONS
   Dividends from Net Investment Income                                   (.420)
   Distributions from Realized Capital Gains                                 --
                                                                   -------------
      Total Distributions                                                 (.420)
- --------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                           $ 9.25
================================================================================

TOTAL RETURN                                                             -3.38%
================================================================================

RATIOS/SUPPLEMENTAL DATA
   Net Assets, End of Period (Millions)                                    $114
   Ratio of Total Expenses to Average Net Assets                        0.20%**
   Ratio of Net Investment Income to Average Net Assets                 4.57%**
   Portfolio Turnover Rate                                                  39%
================================================================================
 *Commencement of operations.
**Annualized.

                                       17

<PAGE>

NOTES TO FINANCIAL STATEMENTS

Vanguard  Massachusetts  Tax-Exempt  Fund is  registered  under  the  Investment
Company Act of 1940 as an open-end  investment company, or mutual fund. The fund
invests in debt  instruments  of municipal  issuers  whose ability to meet their
obligations may be affected by economic and political  developments in the state
of Massachusetts.

A. The following  significant  accounting policies conform to generally accepted
accounting  principles  for mutual  funds.  The fund  consistently  follows such
policies in preparing its financial statements.
     1. SECURITY VALUATION:  Bonds, and temporary cash investments acquired over
60 days to maturity,  are valued using the latest bid prices or using valuations
based on a matrix  system  (which  considers  such  factors as security  prices,
yields,  maturities,  and  ratings),  both as furnished by  independent  pricing
services.  Other temporary cash  investments are valued at amortized cost, which
approximates  market  value.  Securities  for which  market  quotations  are not
readily  available  are valued by  methods  deemed by the Board of  Trustees  to
represent fair value.
     2. FEDERAL  INCOME  TAXES:  The fund  intends to  qualify  as  a  regulated
investment company and distribute all of its income.  Accordingly,  no provision
for federal income taxes is required in the financial statements.
     3. FUTURES CONTRACTS:  The fund may use Municipal Bond Index, U.S. Treasury
Bond, and U.S. Treasury Note futures contracts, with the objectives of enhancing
returns, managing interest rate risk, maintaining liquidity, diversifying credit
risk, and minimizing  transaction  costs.  The fund may purchase or sell futures
contracts  instead of bonds to take advantage of pricing  differentials  between
the futures  contracts and the underlying  bonds. The fund may also seek to take
advantage  of price  differences  among bond  market  sectors by  simultaneously
buying futures (or bonds) of one market sector and selling futures (or bonds) of
another sector.  Futures contracts may also be used to simulate a fully invested
position in the underlying bonds while maintaining a cash balance for liquidity.
The primary  risks  associated  with the use of futures  contracts are imperfect
correlation  between  changes in market values of bonds held by the fund and the
prices of futures contracts, and the possibility of an illiquid market.
     Futures  contracts  are valued  based upon their  quoted  daily  settlement
prices. The aggregate principal amounts of the contracts are not recorded in the
financial statements. Fluctuations in the value of the contracts are recorded in
the  Statement  of Net Assets as an asset  (liability)  and in the  Statement of
Operations as  unrealized  appreciation  (depreciation)  until the contracts are
closed, when they are recorded as realized futures gains (losses).
     4. DISTRIBUTIONS:  Distributions  from  net investment  income are declared
daily  and  paid  on the  first  business  day of the  following  month.  Annual
distributions  from  realized  capital  gains,  if  any,  are  recorded  on  the
ex-dividend date.
     5. OTHER:  Security  transactions  are accounted for on the date securities
are bought or sold. Costs used to determine  realized gains (losses) on the sale
of investment securities are those of the specific securities sold. Premiums and
original issue discounts are amortized and accreted,  respectively,  to interest
income over the lives of the respective securities.

B.  The  Vanguard  Group  furnishes  at  cost  investment  advisory,   corporate
management,  administrative,  marketing, and distribution services. The costs of
such services are  allocated to the fund under methods  approved by the Board of
Trustees.  The fund has  committed  to  provide up to 0.40% of its net assets in
capital   contributions  to  Vanguard.  At  November  30,  1999,  the  fund  had
contributed   capital  of  $22,000  to  Vanguard  (included  in  Other  Assets),
representing   0.02%  of  the  fund's   net  assets  and  0.02%  of   Vanguard's
capitalization. The fund's Trustees and officers are also Directors and officers
of Vanguard.

                                       18

<PAGE>

C. The fund's  investment  adviser  may direct new issue  purchases,  subject to
obtaining  the best price and  execution,  to  underwriters  who have  agreed to
rebate  or  credit to the fund part of the  underwriting  fees  generated.  Such
rebates  or  credits  are used  solely  to  reduce  the  fund's  management  and
administrative expenses. The fund's custodian bank has also agreed to reduce its
fees when the fund maintains cash on deposit in the non-interest-bearing custody
account.  For the period ended  November 30, 1999,  these  arrangements  reduced
expenses by:

- --------------------------------------------------------------------------------
              EXPENSE REDUCTION
                    (000)                                   TOTAL EXPENSE
- -------------------------------------------                REDUCTION AS A
MANAGEMENT AND                  CUSTODIAN                   PERCENTAGE OF
ADMINISTRATIVE                    FEES                    AVERAGE NET ASSETS
- --------------------------------------------------------------------------------
     $5                            $4                           0.01%*
- --------------------------------------------------------------------------------
*Annualized.

D. During the period ended November 30, 1999, the fund purchased $138,027,000 of
investment securities and sold $27,173,000 of investment securities,  other than
temporary cash investments.

E. At November 30, 1999, the fund had available a capital loss  carryforward  of
$1,070,000 to offset future net capital gains through November 30, 2007.

F. At November 30, 1999, net unrealized  depreciation  of investment  securities
for federal income tax purposes was $6,202,000,  consisting of unrealized  gains
of  $70,000 on  securities  that had risen in value  since  their  purchase  and
$6,272,000  in unrealized  losses on  securities  that had fallen in value since
their purchase.

G. The fund was organized on August 17, 1998,  and its operations up to December
9, 1998,  were limited to the sale and  issuance of 14,479  shares of its common
stock, at $10 per share, to a family member of an officer of the fund.

                                       19

<PAGE>

REPORT OF INDEPENDENT ACCOUNTANTS

To the Shareholders and Trustees of
Vanguard Massachusetts Tax-Exempt Fund

In our  opinion,  the  accompanying  statement  of net  assets  and the  related
statements  of  operations  and of  changes  in net  assets  and  the  financial
highlights present fairly, in all material  respects,  the financial position of
Vanguard  Massachusetts  Tax-Exempt  Fund (the "Fund") at November 30, 1999, the
results of its  operations  for the period  then  ended,  the changes in its net
assets in the period then ended and the financial  highlights in the period then
ended,  in conformity  with  generally  accepted  accounting  principles.  These
financial  statements  and  financial  highlights   (hereafter  referred  to  as
"financial  statements") are the  responsibility of the Fund's  management;  our
responsibility  is to express an opinion on these financial  statements based on
our audit.  We conducted our audit of these  financial  statements in accordance
with  generally  accepted  auditing  standards  which  require  that we plan and
perform the audit to obtain  reasonable  assurance  about  whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements,  assessing the accounting  principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe that our audit, which included confirmation of securities at November
30, 1999 by correspondence  with the custodian,  provides a reasonable basis for
the opinion expressed above.

PricewaterhouseCoopers LLP

Thirty South Seventeenth Street
Philadelphia, Pennsylvania 19103

January 6, 2000

- --------------------------------------------------------------------------------
SPECIAL 1999 TAX INFORMATION (UNAUDITED) FOR
VANGUARD MASSACHUSETTS TAX-EXEMPT FUND

This  information  for the fiscal  year ended  November  30,  1999,  is included
pursuant to provisions of the Internal Revenue Code.
     The  fund  designates  100%  of its  income  dividends  as  exempt-interest
dividends.
- --------------------------------------------------------------------------------

                                       20

<PAGE>

THE PEOPLE WHO GOVERN YOUR FUND

The  Trustees of your mutual fund are there to see that the fund is operated and
managed in your best interests  since,  as a shareholder,  you are part owner of
the fund.  Your  fund  Trustees  also  serve on the  Board of  Directors  of The
Vanguard  Group,  which is owned by the  funds  and  exists  solely  to  provide
services to them on an at-cost basis.
     The majority of Vanguard's board members are independent, meaning that they
have no  affiliation  with  Vanguard or the funds they  oversee,  apart from the
sizable personal investments they have made as private  individuals.  They bring
distinguished  backgrounds  in business,  academia,  and public service to their
task of working with Vanguard officers to establish the policies and oversee the
activities of the funds.
     Among board members' responsibilities are selecting investment advisers for
the  funds;  monitoring  fund  operations,  performance,  and  costs;  reviewing
contracts;  nominating  and  selecting  new  Trustees/Directors;   and  electing
Vanguard officers.
     The list below provides a brief description of each Trustee's  professional
affiliations.  Noted in  parentheses is the year in which the Trustee joined the
Vanguard Board.

TRUSTEES

JOHN  C.  BOGLE -- (1967)    Founder,   Senior   Chairman  of  the  Board,   and
Director/Trustee  of The  Vanguard  Group,  Inc.,  and  each  of the  investment
companies in The Vanguard Group.

JOHN J. BRENNAN -- (1987) Chairman of the Board,  Chief Executive  Officer,  and
Director/Trustee  of The  Vanguard  Group,  Inc.,  and  each  of the  investment
companies in The Vanguard Group.

JOANN HEFFERNAN HEISEN -- (1998) Vice President,  Chief Information Officer, and
a member of the Executive Committee of Johnson & Johnson;  Director of Johnson &
JohnsonoMerck Consumer Pharmaceuticals Co., The Medical Center at Princeton, and
Women's Research and Education Institute.

BURTON G. MALKIEL -- (1977) Chemical  Bank  Chairman's  Professor of  Economics,
Princeton  University;  Director of Prudential  Insurance Co. of America,  Banco
Bilbao Gestinova,  Baker Fentress & Co., The Jeffrey Co., and Select Sector SPDR
Trust.

ALFRED M. RANKIN,  Jr. -- (1993) Chairman,  President,  Chief Executive Officer,
and Director of NACCO Industries, Inc.; Director of The BFGoodrich Co.

JOHN C. SAWHILL -- (1991)  President and Chief  Executive  Officer of The Nature
Conservancy;  formerly,  Director  and  Senior  Partner  of  McKinsey  & Co. and
President  of New York  University;  Director of Pacific Gas and  Electric  Co.,
Procter & Gamble Co., NACCO Industries, and Newfield Exploration Co.

JAMES O. WELCH, Jr. -- (1971) Retired Chairman of Nabisco Brands,  Inc.; retired
Vice Chairman and Director of RJR Nabisco;  Director of TECO Energy,  Inc.,  and
Kmart Corp. J.

LAWRENCE  WILSON -- (1985)  Retired  Chairman  of Rohm & Haas Co.;  Director  of
Cummins Engine Co. and The Mead Corp.; Trustee of Vanderbilt University.

OTHER FUND OFFICERS

RAYMOND J.  KLAPINSKY  --  Secretary;  Managing  Director  and  Secretary of The
Vanguard  Group,  Inc.;  Secretary  of each of the  investment  companies in The
Vanguard Group.

THOMAS J. HIGGINS -- Treasurer; Principal of The Vanguard Group, Inc.; Treasurer
of each of the investment companies in The Vanguard Group.

VANGUARD MANAGING DIRECTORS

R. GREGORY BARTON -- Legal Department.
ROBERT A. DISTEFANO -- Information Technology.
JAMES H. GATELY -- Individual Investor Group.
KATHLEEN C. GUBANICH -- Human Resources.
IAN A. MACKINNON -- Fixed Income Group.
F. WILLIAM MCNABB, III -- Institutional Investor Group.
MICHAEL S. MILLER -- Planning and Development.
RALPH K. PACKARD -- Chief Financial Officer.
GEORGE U. SAUTER -- Core Management Group.

<PAGE>

ABOUT OUR COVER

Our cover art, depicting HMS Vanguard at sea, is a
reproduction  of Leading the Way, a 1984 work created
and copyrighted by noted naval artist Tom Freeman,
of Forest Hill, Maryland.

All comparative mutual fund data are from Lipper Inc. or Morningstar,
Inc., unless otherwise noted.

"Standard & Poor's(R)," "S&P(R)," "S&P 500(R)," "Standard & Poor's 500,"
and "500" are trademarks of The McGraw-Hill Companies, Inc.

Frank Russell Company is the owner of trademarks and copyrights
relating to the Russell Indexes. "Wilshire 4500" and "Wilshire 5000"
are trademarks of Wilshire Associates.

[PHOTO OF SHIP]
[THE VANGUARD GROUP LOGO]
Post Office Box 2600
Valley Forge, Pennsylvania 19482-2600

WORLD WIDE WEB
www.vanguard.com

FUND INFORMATION
1-800-662-7447

INDIVIDUAL ACCOUNT SERVICES
1-800-662-2739

INSTITUTIONAL INVESTOR SERVICES
1-800-523-1036

This report is intended for the fund's
shareholders. It may not be distributed
to prospective investors unless it
is preceded or accompanied by the
current fund prospectus.

Q1680-01/21/2000

(C) 2000 The Vanguard Group, Inc.
All rights reserved.
Vanguard Marketing
Corporation, Distributor.



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