Every tax deadline, with a countdown.
Income tax, GST and TDS due dates for FY 2025-26 and FY 2026-27, with the late fee for missing each one. Verified against CBDT and CBIC notifications.
| Deadline | Next due | Applies to | Late fee |
|---|---|---|---|
| Advance tax instalmentChallan ITNS 280 | 15 Sept 20262 days | Anyone with tax liability above ₹10,000 after TDS (except senior citizens without business income) | No late fee |
| GSTR-3B monthlyGSTR-3B | 20 Sept 20267 days | Regular taxpayers filing monthly | ₹50 per day (₹20 for nil returns), capped by turnover |
| Form 26QB (property TDS)Form 26QB | 30 Sept 202617 days | Buyers of property worth ₹50 lakh or more | ₹200 per day under 234E |
| TDS monthly depositChallan ITNS 281 | 7 Oct 202624 days | All deductors (non-government) | No late fee, but interest |
| GSTR-1 monthlyGSTR-1 | 11 Oct 202628 days | Regular taxpayers filing monthly (turnover above ₹5 crore or not opted for QRMP) | ₹50 per day (₹20 for nil), capped at ₹2,000 to ₹10,000 by turnover |
| CMP-08 quarterlyCMP-08 | 18 Oct 202635 days | Composition scheme taxpayers | ₹50 per day (₹20 nil), capped at ₹2,000 |
| TDS quarterly return24Q / 26Q / 27Q | 31 Oct 202648 days | All TAN holders | ₹200 per day under section 234E, capped at the TDS amount |
| ITR filing (audit cases)ITR-3, 5, 6 with 3CA/3CB-3CD | 31 Oct 202648 days | Taxpayers liable to tax audit under 44AB | ₹5,000 under 234F; 0.5% of turnover up to ₹1,50,000 for late audit report under 271B |
| GSTR-9 annual returnGSTR-9 / 9C | 31 Dec 2026109 days | Regular taxpayers with turnover above ₹2 crore (9C above ₹5 crore) | ₹50 per day up to 0.04% of turnover (₹200/day above ₹20 crore) |
| Belated / revised returnITR under 139(4) / 139(5) | 31 Dec 2026109 days | Anyone who missed 31 July or needs to correct a filed return | ₹5,000 under 234F (₹1,000 if income up to ₹5 lakh) |
| ITR filing (non-audit)ITR-1 to ITR-4 | 31 Jul 2027321 days | Individuals, HUFs and firms not liable to audit | ₹5,000 under 234F (₹1,000 if total income up to ₹5 lakh) |
Dates are computed for the Indian calendar day. Where a due date falls on a public holiday the portal usually accepts filings the next working day, but do not rely on it.
Closest deadlines
LIVEDue date questions
What are the most important tax deadlines each month?
The 7th for TDS deposit, the 11th for GSTR-1 and the 20th for GSTR-3B. Quarterly TDS returns fall on 31 July, 31 October, 31 January and 31 May. Advance tax is due 15 June, 15 September, 15 December and 15 March.
Are these dates updated when the government extends a deadline?
Yes. Each deadline page shows a last-verified date. We update within 24 hours of a CBDT or CBIC press release.
Can I get reminders?
Deadline reminders on WhatsApp are part of every GST and TDS retainer plan. Reminder sign-up for everyone else arrives with the client portal.