<PAGE>
BT INVESTMENT FUNDS
One South Street
Baltimore, Maryland 21202
September 5, 2000
EDGAR Operations
Branch Securities and Exchange Commission
Division of Investment Management
450 Fifth Street, Northwest
Washington, DC 20549
RE: BT INVESTMENT FUNDS (the "Trust")
Mid Cap (the "Fund")
1933 Act File No. 33-07404
1940 Act File No. 811-4760
Dear Sir or Madam:
Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, the above-
named Trust hereby certifies that the definitive forms of the prospectus and
statement of additional information, dated August 31, 2000, do not differ from
the forms of the prospectus and statement of additional information contained in
the registration statement for the Trust electronically filed under Rule 485(b)
as Post-Effective Amendment No. 73 on August 31, 2000.
If you have any questions regarding this certification, please call me at
(410) 895-3776.
Very truly yours,
/s/ Daniel O. Hirsch
--------------------------
Daniel O. Hirsch Secretary
