Matthew Tepper, 69, a stockbroker and certified public accountant who founded two accounting firms, died Tuesday of congestive heart failure. Mr. Tepper, who had diabetes, was stricken at his home in Chevy Chase. He was taken to Suburban Hospital in Bethesda, where he was pronounced dead.

A native of sourthern Poland, Mr. Tepper came to the United States in 1920 and settled in New Bedford, Mass. He moved to Washington in 1929 and earned a degree in accounting at Benjamin Franklin University in 1933. Until the early 1940s, he worked for the General Accounting Office.

Mr. Tepper then founded the accounting firm of Matthew Tepper & Associates in Washington. About 1950, this was succeeded by the firm of Tepper and Kozlow, and Mr. Tepper practiced accounting there until 1963.

In that year, he began a new career as a stockbroker. He began with Harris Upham & Co., now Smith Barney Harris Upham & Co. Inc., and remained with that organization until his death.

Mr. Tepper was a past master of the Samuel Gompers Masonic Lodge, a member of the board of governors of the B'nai Israel Synagogue, formerly of Washington and now in Rockville, and a member of the Progres Club.

His wife, Esther, died in 1962.

Survivors include a son, Julian, of Washington; a daugther, Phyllis Lessans, of Silver Spring, and Isaac, of Port Richey, Fla., and seven grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the United Jewish Appeal.