CASH TRUST SERIES, INC.
Supplement to Combined Prospectus dated September 30, 1997
At the May 15, 1998 shareholder meeting, shareholders approved the following:
Changed Prime Cash Series' and Municipal Cash Series' fundamental policies
of investing in restricted securities to non-fundamental policies and
allowing Prime Cash Series and Municipal Cash Series to invest, without
limitation, in restricted securities which meet the Board of Directors'
guidelines for liquidity. Therefore, the policies on investing in restricted
securities in Prime Cash Series and Municipal Cash Series are:
"Prime Cash Series and Municipal Cash Series may invest in restricted
securities. Restricted securities are any securities in which Prime Cash
Series and Municipal Cash Series may invest pursuant to their investment
objective and policies but which are subject to restrictions on resale
under federal securities law. Under criteria established by the Directors,
certain restricted securities are determined to be liquid. To the extent
that restricted securities are not determined to be liquid, Prime Cash
Series and Municipal Cash Series will limit their purchase, together with
other illiquid securities, to 10% of their net assets."
Amended Prime Cash Series' fundamental concentration policy by eliminating
the requirement to concentrate in commercial paper issued by finance
companies. Therefore, Prime Cash Series' fundamental policy on concentration
is as follows:
"Prime Cash Series will not invest 25% or more of its total assets in any
one industry. However, investing in U.S. government securities and domestic
bank instruments shall not be considered investments in any one industry."
June 1, 1998
[GRAPHIC OMITTED]
Cusip 147551105
G02403-01 (6/98)
[GRAPHIC OMITTED]
PRIME CASH SERIES
(A Portfolio of Cash Trust Series, Inc.)
Supplement to Prospectus dated September 30, 1997
At the May 15, 1998 shareholder meeting, shareholders approved the following:
Amended the Fund's fundamental concentration policy by eliminating the
requirement to concentrate in commercial paper issued by finance companies.
Therefore, the Fund's fundamental policy on concentration is as follows:
"The Fund will not invest 25% or more of its total assets in any one
industry. However, investing in U.S. government securities and domestic
bank instruments shall not be considered investments in any one industry."
Changed the Fund's fundamental policy of investing in restricted securities
to a non-fundamental policy allowing the Fund to invest, without limitation,
in restricted securities which meet the Board of Directors' guidelines for
liquidity. Therefore, the Fund's policy on restricted securities is as
follows:
"The Fund may invest in restricted securities. Restricted securities are
any securities in which the Fund may invest pursuant to its investment
objectives and policies but which are subject to restrictions on resale
under federal securities law. Under criteria established by the Directors,
certain restricted securities are determined to be liquid. To the extent
that restricted securities are not determined to be liquid, the Fund will
limit their purchase, together with other illiquid securities, to 10% of
its net assets."
June 1, 1998
[GRAPHIC OMITTED]
Cusip 147551105
G02402-01 (6/98)
[GRAPHIC OMITTED]
PRIME CASH SERIES
(A Portfolio of Cash Trust Series, Inc.)
Supplement to Statement of Additional Information dated September 30, 1997
At the May 15, 1998 shareholder meeting, shareholders approved the following:
Elected Nicholas P. Constantakis to the Board of Directors;
Amended the policy on diversification of investments by removing any
specific restrictions regarding diversification so that the Fund will
continue to be operated in accordance with Rule 2a-7;
Changed the Fund's fundamental policy of investing in restricted securities
to a non-fundamental policy allowing the Fund to invest, without limitation,
in restricted securities which meet the Board of Directors' guidelines for
liquidity; and
Amended the Fund's fundamental concentration policy by eliminating the
requirement to concentrate in commercial paper issued by finance companies.
June 1, 1998
[GRAPHIC OMITTED]
Cusip 147551105
G02402-02 (6/98)
[GRAPHIC OMITTED]
MUNICIPAL CASH SERIES
(A Portfolio of Cash Trust Series, Inc.)
Supplement to Prospectus dated September 30, 1997
At the May 15, 1998 shareholder meeting, shareholders approved a change to the
Fund's fundamental policy of investing in restricted securities. The policy is
now non-fundamental and allows the Fund to invest, without limitation, in
restricted securities which meet the Board of Directors' guidelines for
liquidity. Therefore, the Fund's policy on restricted securities is as follows:
"The Fund may invest in restricted securities. Restricted securities are
any securities in which the Fund may invest pursuant to its investment
objective and policies but which are subject to restrictions on resale
under federal securities law. Under criteria established by the Directors,
certain restricted securities are determined to be liquid. To the extent
that restricted securities are not determined to be liquid, the Fund will
limit their purchase, together with other illiquid securities, to 10% of
its net assets."
June 1, 1998
[GRAPHIC OMITTED]
Cusip 147551303
G02401-01 (6/98)
[GRAPHIC OMITTED]
MUNICIPAL CASH SERIES
(A Portfolio of Cash Trust Series, Inc.)
Supplement to Statement of Aditional Information dated September 30, 1997
At the May 15, 1998 shareholder meeting, shareholders approved the following:
Elected Nicholas P. Constantakis to the Board of Directors;
Amended the policy on diversification of investments by removing any
specific restrictions regarding diversification so that the Fund will
continue to be operated in accordance with Rule 2a-7; and
Changed the Fund's fundamental policy of investing in restricted securities
to a non-fundamental policy allowing the Fund to invest, without limitation,
in restricted securities which meet the Board of Directors' guidelines for
liquidity.
June 1, 1998
[GRAPHIC OMITTED]
Cusip 147551303
G02401-02 (6/98)
[GRAPHIC OMITTED]
GOVERNMENT CASH SERIES
(A Portfolio of Cash Trust Series, Inc.)
Supplement to Statement of Additional Information dated September 30, 1997
At the May 15, 1998 shareholder meeting, shareholders elected Nicholas P.
Constantakis to the Board of Directors.
June 1, 1998
[GRAPHIC OMITTED]
Cusip 147551204
G02405-01 (6/98)
[GRAPHIC OMITTED]
TREASURY CASH SERIES
(A portfolio of Cash Trust Series, Inc.)
Supplement to Statement of Additional Information dated September 30, 1997
At the May 15, 1998 shareholder meeting, shareholders elected Nicholas P.
Constantakis to the Board of Directors.
June 1, 1998
[GRAPHIC OMITTED]
Cusip 147551402
G02406-01 (6/98)
[GRAPHIC OMITTED]
