Section 35A(1) in The Assam Agricultural Income-Tax Act, 1939
(1)If an assessee, the required to pay advance tax under Section 35, estimates at any time before the last instalment of the advance tax is due in his case and finds that by reason of his income of the year, for which he is liable to pay advance tax being likely to be more or less than the income on which the advance tax payable by him under Section 35 or for any other reason, the advance tax payable by him would be more or less than the amount which he is so required to pay, he shall furnish to the Agricultural Income Tax Officer an estimate of-(i)the current total agricultural income; and(ii)the advance tax payable by him under this Act, and shall pay such amount of advance tax as accords with his estimate in equal instalments on such dates as may be prescribed.