Commencement of amendment act fixes the default operative date for amendments to core tax statutes. The Taxation Laws (Amendment) Act, 2003 is the short title for amendments to the Income-tax Act, 1961, the Wealth-tax Act, 1957 and the Expenditure-tax Act, 1987; and, save as otherwise provided in the Act, it is deemed to have come into force on an earlier specified date, establishing the default temporal effect of the statutory amendments.