 The 1968 Act continued the 10 percent tax retroactively from April 30, 1968, until December 31, 1969, with provision for its subsequent reduction and repeal by calendar year 1973.Passage of the Tax Reform Act of 1969  again granted a one-year extension (this time until December 31, 1970) of the telephone tax at the rate of 10 percent.With passage of the Excise, Estate and Gift Tax Adjustment Act of 1970  the 10 percent rate was extended through calendar years 1971 and 1972.