Late Fee & Interest (234A/B/C/F)
Section 234F late-filing fee and 234A/B/C interest computation.
The Late Fee and Interest Calculator computes the late filing fee under Section 234F and interest under Sections 234A and 234B on outstanding tax when an income-tax return is filed late. Interest under Section 234C is covered in the Advance Tax Calculator. It is for taxpayers and accountants estimating the cost of a delayed return.
Use the Late Fee & Interest (234A/B/C/F)
Late Fee & Interest
Outstanding Tax₹ 0
Months delayed0
234F Late Filing Fee₹ 0
234A Interest (1%/month)₹ 0
234B Interest (1%/month)₹ 0
Total Penalty₹ 0
234F: ₹5,000 if filed late (₹1,000 if total income ≤ ₹5L). 234A & 234B both apply at 1% per month or part of month.
Compute late filing fee under Section 234F, default interest under 234B, and late filing interest under 234A on outstanding tax. (234C is calculated per-instalment in the Advance Tax Calculator.)
Section reference
- 234A (Sec 423 from TY 2026-27): Interest on default in furnishing return - 1% per month or part of month on outstanding tax, from due date till date of filing.
- 234B (Sec 424 from TY 2026-27): Interest on default in payment of advance tax - 1% per month on outstanding tax (if 90% of assessed tax was not paid as advance tax / TDS by 31 March).
- 234C (Sec 425 from TY 2026-27): Interest on deferment of advance tax instalments - per-instalment shortfall x 1% x 3 months (1 month for 4th instalment).
- 234F (Sec 428 from TY 2026-27): Fee for default in furnishing return - ₹5,000 (₹1,000 if total income ≤ ₹5L). Applies if ITR filed after due date.
- Belated return last date: 31 December of the relevant Assessment Year, i.e. 31 December 2026 for AY 2026-27 (Section 139(4); Section 263(4) from TY 2026-27), or before completion of assessment, if earlier.
- Revised return (Finance Act 2026): from AY 2026-27 a revised return under Section 139(5) can be filed up to 31 March of the Assessment Year (31 March 2027 for AY 2026-27), or before completion of assessment, if earlier. A revision after 31 December attracts a fee under the new Section 234-I (₹5,000; ₹1,000 if total income ≤ ₹5L). This calculator does not compute that fee.
TRACES correction lockout (1 April 2026):
Under the transition to ITA 2025, all TDS / TCS correction statements for FY 2018-19 Q4 through FY 2023-24 Q3 must have been filed before 31 March 2026. From 1 April 2026, these years are permanently time-barred on the TRACES portal — no exception, even for genuine errors. For Tax Year 2026-27 onwards, corrections are allowed only within 2 years from the end of the relevant Tax Year (Section 397(3), ITA 2025).
Important note: This tool provides an indicative output only. It does not factor in every special provision, surcharge, exception, or recent notification. Verify with the firm before acting on any computation.
Frequently Asked Questions
What is the late fee for filing ITR after the due date?
Under Section 234F, the fee for filing an income tax return after the due date is Rs 5,000, reduced to Rs 1,000 if total income does not exceed Rs 5 lakh. From Tax Year 2026-27, the corresponding provision is Section 428 of the Income Tax Act, 2025. Interest under Sections 234A and 234B may also apply on unpaid tax.
What is the last date to file a belated return?
A belated return can be filed up to 31 December of the relevant assessment year under Section 139(4), which corresponds to Section 263(4) from Tax Year 2026-27. For FY 2025-26 (AY 2026-27), that is 31 December 2026. A belated return attracts the Section 234F fee and interest on any tax that remains unpaid. After 31 December 2026 a return for AY 2026-27 can only be filed as an updated return (ITR-U) under Section 139(8A), which must increase the tax payable and carries additional tax of 25% to 70%. Separately, the Finance Act 2026 allows a revised return up to 31 March 2027 for AY 2026-27, with a fee under Section 234-I if revised after 31 December 2026.
How does the late fee and interest calculator work?
Enter total income, tax liability, tax already paid, the filing date and the applicable due date for AY 2026-27. If the return is late, the tool applies the Section 234F fee, then charges 1% per month or part of a month on unpaid tax under Section 234A from the due date, and under Section 234B from 1 April 2026 where less than 90% of tax was paid in advance. It is an estimate; advance tax paid is not split by date.
Due in the next 30 days
Income tax- ITR Filing (taxpayers under audit, companies)
- TCS statement for Jul–Sep 2026 quarter (Form 143)
- TDS statements for Jul–Sep 2026 quarter (Forms 138 / 140 / 144)
- TDS / TCS deposit (e-Pay Tax, Challan ITNS 281) for October
Full compliance calendar → Statutory dates, which can be extended by notification. General information only.