Tax Deduction at Source on income from mutual fund units applies at the earlier of credit or payment. Persons paying income in respect of mutual fund units, units from the Administrator or specified company must deduct tax at source at 10% at the time of credit or payment, with credits to suspense accounts deemed to be credit to the payee; deduction applies only when annual aggregate receipts exceed the prescribed threshold and excludes income of the nature of capital gains, with term definitions drawn from the Unit Trust of India (Transfer of Undertaking and Repeal) Act, 2002.