Tax deduction at source: specified withholding rates apply to lottery, crossword and horse-race winnings after Finance Act revisions. Deduction of tax at source is required on winnings from lotteries, crossword puzzles and horse races under sections 194B and 194BB; the circular communicates the withholding rates for 1986-87 and records that the Finance Act, 1986, amended the monetary thresholds and introduced section 115BB imposing a flat charge on gross winnings. The guidance distinguishes resident and non-resident treatment and separates corporate and non-corporate withholding rates, and directs payers to consult statutory provisions or departmental officers for clarification.