Advance Tax Calculator — Instalments, Due Dates and Interest under Sections 424 (234B of the 1961 Act) and 425 (234C of the 1961 Act)

The rules applied

Advance tax is payable where the tax for the year, after TDS and TCS, exceeds ₹10,000: 15% by 15 June, 45% by 15 September, 75% by 15 December and 100% by 15 March (cumulative). Taxpayers under the presumptive schemes of section 58 (44AD and 44ADA) pay the whole amount by 15 March. Resident senior citizens without business or professional income are exempt. Section 425 (234C) charges 1% a month for three months on the shortfall at each of the first three dates — with no charge for June if at least 12% was paid, and none for September if at least 36% was paid — and 1% for one month on the shortfall at 15 March; instalment shortfalls arising only from capital gains or lottery winnings are excused where the tax is paid in the next instalment. Section 424 (234B) applies where advance tax paid by 31 March is less than 90% of the assessed tax: 1% a month, or part of a month, from 1 April on the unpaid amount until it is paid. Tax paid by 31 March counts as advance tax for section 424 (234B). Interest is computed on the amount rounded down to the nearest ₹100 (rule 119A). Read our note on due dates.

Disclaimer. These calculators are provided for general information only. They apply the Indian and UAE tax rules as we understand them for the year stated and are not legal, tax or professional advice, and they do not create a client relationship. Your actual liability depends on your complete facts, on documents we have not seen and on law that changes; please confirm any figure with us before relying on it or acting on it. I. H. Khan and Associates accepts no liability for decisions taken on the basis of these tools. Nothing you enter leaves your browser unless you choose to send the result to us. Section numbers are those of the Income-tax Act, 2025, in force from 1 April 2026, with the familiar 1961 Act number in brackets; the rules are unchanged — see our section map.