Tax withholding on interest requires payers to deduct tax on non securities interest with specified exemptions and thresholds. Deduction at source applies to payments of interest other than on securities: a person responsible for paying such interest must deduct tax at the time of credit to the payee's account or at payment, with de minimis exceptions based on prescribed thresholds, branch level computation rules for banks and similar institutions, specified exempt recipients and receipts, higher thresholds for senior citizens, turnover based exceptions for certain co operative societies, adjustment for prior deduction errors, and Central Government power to notify nil or lower deduction rates.