E. Reece Harrill, 74, a retired government accounting official who later was consultant to private industry, died Friday at the Venice Hospital in Venice, Fla. He had a heart ailment.

Mr. Harrill, who was a longtime resident of the Washington area, helped devise FAMIS, a computerized accounting system that is used in many municipal, state and national accounting programs. He did this work as a consultant to the Peat, Marwick, Mitchell & Co. accounting firm here. He continued as a consultant to Peat, Marwick after moving to Florida from Vienna in 1971.

Mr. Harrill was born in Bostic, N.C. He came to Washington in the late 1920s and attended George Washington University, Southeastern University and the Strayer College of Accountancy. He was a certified public accountant.

He began his government career in 1936 with the old Social Security Board. In 1940, he transferred to the old Bureau of the Budget, now the Office of Management and Budget, and, except for World War II service in the Army, he remained there until 1948. He was with the General Accounting Office until 1954.

In that year he moved to Massena, N.Y., to work for the St. Lawrence Seaway Development Corp., a government enterprise. He was assistant administrator for management and traffic development at the time of his retirement in 1963.

Mr. Harrill then returned to the Washington area and began his career as a consultant. He worked for the United Nations as well as for private firms.

In 1957, he received a merit citation from the National Civil Service League.

He was a member of the American Institute of Accountants, the Federal Government Accountants and the Municipal Finance Officers Association. He published numerous articles in professional Journals.

Mr. Harrill served in the Army in the Pentagon during World War II, rising to the rank of lieutenant colonel.

Survivors include his wife, Dorothy, of Venice; a daughter, Nancy Bowen of Vienna; a son, James R., of Carson City, Nev., two sisters, Lala B. Harrill of Spartanburg, S.C., and Mrs. George S. Owens of Jacksonville, Fla.; two brothers, Lemuel and Jake Harrill, both of Bostic, and five grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to a charity of one's choice.