Tax deduction at source on interest: surcharge addition increases withholding tax obligation for payers under amended finance provisions. Rates for deduction of tax at source on interest (other than interest on securities) are in Part II of the First Schedule to the Finance Act, 1987 and deductions are subject to statutory exemptions. The Finance (Amendment) Act, 1987 immediately amended the Schedule to require that income-tax computed under those rates be increased by a surcharge of five percent of such income-tax, with the surcharge effective 16-12-1987; taxpayers and withholding agents are to be informed and may seek assistance from Income-tax Officers or Local Public Relations Officers.