Tax deduction at source requires government entities to deduct tax at a prescribed rate on high-value supplies, with reporting duties. Specified government departments, local authorities, governmental agencies or notified persons must deduct tax at the prescribed rate from payments to suppliers where contract value exceeds the threshold, excluding tax components shown on the invoice. Deducted amounts must be paid to the Government within ten days after month end and a certificate furnished to the deductee; late certificate provision and interest on non-payment apply. The deductee may claim credit in the electronic cash ledger when the deduction is reflected in the deductor's return. Refunds and default determinations follow the statutory refund and assessment provisions, and no refund to a deductor is allowed if the amount has been credited to the deductee's ledger.