Late Fee & Interest (234A/B/C/F)
Section 234F late-filing fee and 234A/B/C interest computation.
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.)
Late Fee & Interest
Section reference
- 234A (Sec 410 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 411 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 412 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 413 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 (Section 139(4) / Section 263(4) from TY 2026-27).