<PAGE> 1
William Blair Funds
24 f (2)
December 31, 1999
-----------------
<TABLE>
<CAPTION>
Year from
1/1/99 to 12/31/99
------------------
<S> <C> <C>
REGISTRATION NO. 33-17463
Pursuant to paragraph ( c ) of Rule 24f-2, the
filing fees accompanying this notice
were calculated in the following manner:
(a) The actual sales price of Fund shares
sold and reinvested during the fiscal year. $4,869,461,513
(b) Reduced by:
( 1 ) The actual sales price of Fund sold in
private placement to the Adviser pursuant to
an investment letter to. 0
( 2 ) The difference between:
( i ) the actual aggregate redemption price of
Fund shares redeemed during the fiscal year,
(if filed before March 1); and 4,918,916,654
( ii ) the actual aggregate redemption price of such
redeemed shares previously applied pursuant to
Rule 24e-2(a) under Section 24 (e) (1) of the
Securities Act of 1933.
Step (b) results $ (49,455,141)
==============
(c) Registration fee pursuant to Section 6(b) of
the Securities Act of 1933 (either one -
twenty-seven. Eight% or the minimum fee of $100). $ 100
==============
</TABLE>
<PAGE> 2
William Blair Funds
24 f (2)
December 31, 1999
-----------------
<TABLE>
<CAPTION>
Year Ended December 31, 1999
----------------------------
Sales Shares Amount
----- ------ ------
<S> <C> <C>
Growth Fund 16,028,074 $ 294,188,130
Ready Reserves Fund 3,961,668,250 $3,961,668,250
Income Fund 5,056,651 $ 51,259,445
International Growth Fund 20,255,215 $ 386,956,234
Value Discovery Fund 828,644 $ 10,567,525
Emerging Markets Growth Fund 83,172 $ 840,940
Tax-Managed Growth Fund 99,943 $ 999,425
Large Cap Growth Fund 113,651 $ 1,136,864
Small Cap Growth Fund 622,730 $ 6,229,874
Disciplined Large Cap Fund 149,922 $ 1,499,791
------------- --------------
4,004,906,250 $4,715,346,477
Reinvestments
-------------
Growth Fund 2,608,701 $ 51,573,698
Ready Reserves Fund 48,807,052 $ 48,807,052
Income Fund 792,418 $ 8,043,819
International Growth Fund 1,957,870 $ 45,344,189
Value Discovery Fund 25,076 $ 330,027
Emerging Markets Growth Fund 1,248 $ 16,250
Tax-Managed Growth Fund 0 $ 0
Large Cap Growth Fund 0 $ 0
Small Cap Growth Fund 0 $ 0
Disciplined Large Cap Fund 0 $ 0
------------- --------------
54,192,365 $ 154,115,035
Total sales and reinvestments
-----------------------------
Growth Fund 18,636,775 $ 345,761,827
Ready Reserves Fund 4,010,475,302 $4,010,475,302
Income Fund 5,849,068 $ 59,303,264
International Growth Fund 22,213,085 $ 432,300,423
Value Discovery Fund 853,720 $ 10,897,553
Emerging Markets Growth Fund 84,420 $ 857,190
Tax-Managed Growth Fund 99,943 $ 999,425
Large Cap Growth Fund 113,651 $ 1,136,864
Small Cap Growth Fund 622,730 $ 6,229,874
Disciplined Large Cap Fund 149,922 $ 1,499,791
------------- --------------
4,059,098,615 $4,869,461,513
============= ==============
</TABLE>
<PAGE> 3
William Blair Funds
24 f (2)
December 31, 1999
-----------------
<TABLE>
<CAPTION>
Year Ended December 31, 1999
----------------------------
Redemptions Shares Amount
----------- ------ ------
<S> <C> <C>
Growth Fund 19,205,002 $ 329,231,283
Ready Reserves Fund 4,146,724,615 $4,146,724,615
Income Fund 6,275,092 $ 63,487,114
International Growth Fund 19,200,570 $ 368,521,539
Value Discovery Fund 751,437 $ 9,558,730
Emerging Markets Growth Fund 134,258 $ 1,393,373
Tax-Managed Growth Fund 0 $ 0
Large Cap Growth Fund 0 $ 0
Small Cap Growth Fund 0 $ 0
Disciplined Large Cap Fund 0 $ 0
------------- --------------
4,192,290,973 $4,918,916,654
Net sales and reinvestments
---------------------------
Growth Fund (568,227) $ 16,530,544
Ready Reserves Fund (136,249,313) ($136,249,313)
Income Fund (426,024) ($4,183,850)
International Growth Fund 3,012,515 $ 63,778,884
Value Discovery Fund 102,283 $ 1,338,822
Emerging Markets Growth Fund (49,839) ($536,183)
Tax-Managed Growth Fund 99,943 $ 999,425
Large Cap Growth Fund 113,651 $ 1,136,864
Small Cap Growth Fund 622,730 $ 6,229,874
Disciplined Large Cap Fund 149,922 $ 1,499,791
------------- --------------
(133,192,358) ($49,455,141)
============= ==============
</TABLE>
<PAGE> 4
William Blair Funds
24 f (2)
December 31, 1999
-----------------
SEC Fee
@.0278%
-----------
Growth Fund 0
Ready Reserves Fund 0
Income Fund 0
International Growth Fund 0
Value Discovery Fund 0
Emerging Markets Growth Fund 0
Tax-Managed Growth Fund 0
Large Cap Growth Fund 0
Small Cap Growth Fund 0
Disciplined Large Cap Fund 0
Minimum Due $100