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Interest u/s 234A / B / C

Compute interest for late filing (234A), advance-tax default (234B) and deferment of instalments (234C), in one place.

Tax & payment details

Total tax on income (incl. 4% cess)

TDS / TCS

Advance tax paid (total)

Due date of return

Date return filed

Date balance tax paid (for 234B)

234C — advance tax paid up to (cumulative, optional)

By 15 Jun

By 15 Sep

By 15 Dec

By 15 Mar

Basis — s. 234A, 234B & 234C

234A — late filing: 1% per month (or part) on tax payable after TDS and advance tax, from the due date to the date of filing.
234B — default in advance tax: where advance tax is under 90% of assessed tax, 1% per month on the shortfall from 1 April of the assessment year to the date of payment.
234C — deferment: 1% per month on the shortfall in each instalment (3 months for the first three, 1 month for the last); no interest for the June/September instalment if 12% / 36% is paid by then.
All interest is simple; the base is rounded down to the nearest \u20B9 100 (Rule 119A). Shortfalls from capital-gains / casual income are reckoned from the instalment after the income arose.

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Disclaimer: This calculator is a free reference tool based on the provisions cited. Results are indicative and may not cover every special case, surcharge, cess or exemption applicable to your facts. Verify against the bare Act and the latest CBIC/CBDT notifications, and consult a professional before acting. In conformity with the ICAI Website Guidelines.