An ITR late-fee calculator should separately compute section 234F fee, section 234A interest, and any self-assessment tax.
An ITR late-fee calculator should separately compute section 234F fee, section 234A interest, and any self-assessment tax. The late fee is not the entire cost of delay.
For AY 2026–27, section 234F of the 1961 Act applies to late filing, subject to the statutory limits. A robust calculator first identifies whether section 139(1) was missed, then checks total income for the lower cap, and separately calculates interest. Section 234A generally runs on unpaid tax from the day after the due date to the filing date, with statutory month-or-part treatment. Sections 234B and 234C may also apply where advance-tax obligations were not met. The result should never mix fee, interest and tax into one unexplained number.
Arjun's total income is ₹7,20,000. After TDS, ₹18,000 remains payable. He files after the applicable due date. The calculator should show: section 234F fee according to the applicable cap; section 234A interest on the unpaid tax for each month or part; any 234B/234C interest; and the principal self-assessment tax. This prevents the common mistake of displaying only ₹5,000 as the total cost.
See the broader Income-tax Act 2025 study guide hub for related rules and calculators on this topic.
An ITR late-fee calculator should separately compute section 234F fee, section 234A interest, and any self-assessment tax. The late fee is not the entire cost of delay.
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