Tax deduction at source on professional fees now required from individuals and HUFs exceeding turnover thresholds. An added proviso makes an individual or a Hindu undivided family liable to deduct income-tax at source on fees for professional or technical services where the assessee's total sales, gross receipts or turnover in the immediately preceding financial year exceed the monetary limits specified for audit under the applicable turnover thresholds, thereby creating a turnover-linked withholding obligation for such payers.