Section 426 of Income Tax Act, 2025 : Interest on excess refund.

(1) Subject to the other provisions of this Act, where any refund is granted to the assessee under section 270(1), and—(a) no refund is due on regular assessment; or(b) the amount refunded under section 270(1) exceeds the amount refundable on regular assessment,the assessee shall be liable to pay simple interest at the rate of 0.5%

Section 431 of Income Tax Act, 2025 : Refunds.

If any person satisfies the Assessing Officer that the amount of tax paid by him or on his behalf or treated as paid by him or on his behalf for any tax year exceeds the amount with which he is properly chargeable under this Act for that year, he shall be entitled to a refund