In appeal to this Court, HELD : The Surcharge Act having come into force on !st September· 1957, and not being retrospective in operation. it could not be regarded' E as law in force at the commencement of the Herir of assessment 1957-58 .. Since it was not the law in force on 1st .April 1957, no surcharge could be levied under it against the appellant in the assessment year 1957-58 .. [98 A-BJ Commissioner of Income-tax, Bo1nbay v. Scindia Steam Navigation' Co. Ltd. [1962] 1 S.C.R. 788 and The Commissioner of Sales Tax U.P. v .. The Modi Sugar Mills, [1961] 2 S.C.R. followed. F l.T. Commissioner v. l.S. Lines, A.I.R. 1953 S.C. 439, explained. CIVIL APPELLATE JURISDICTION : Civil Appeal No. 980 of 1964. Appeal by special leave from the judgment and order, dated July 25, 1963 of the Kerala High ·court in Income-tax Referred' G Case No. 10 of 1962 (Agrl.). · M. C. Setalvad, 0. P. Malhotra, V. 0. Abraham, .T. B. Dadachanji, 0. C. Mathur and Ravinder Narain, for the appellant. P. Govinda Menon, A. Sreedharan Nambiar and M. R. K .. Pillai, for the respondent. U The Judgment of the Court was delivered by