Deadlines
What is coming up
Income tax and GST dates in the next 90 days. Each one links to the page it came from, so you can check it rather than take our word for it.
Agle 90 din ki tareekhein.
- 11 October 2026GSTR-1Monthly filers
- 18 October 2026CMP-08 — quarterly taxComposition scheme
- 20 October 2026GSTR-3BMonthly filers
- 21 October 2026Income tax return — audit report
- 25 October 2026PMT-06 — monthly taxQRMP filers
- 11 November 2026GSTR-1Monthly filers
- 20 November 2026GSTR-3BMonthly filers
- 21 November 2026Income tax return — returns in audit cases
- 25 November 2026PMT-06 — monthly taxQRMP filers
- 11 December 2026GSTR-1Monthly filers
- 15 December 2026Advance tax — 75% of the year's tax due by nowAnyone whose tax after TDS is ₹10,000 or more
- 20 December 2026GSTR-3BMonthly filers
- 25 December 2026PMT-06 — monthly taxQRMP filers
- 31 December 2026GSTR-9 — GST annual returnOptional up to ₹2 crore turnover
- 31 December 2026Last date to file a belated return for FY 2025-26
Official sources · Last checked: 30 Sep 2026
- GSTN — GSTR-1 — due by the 11th
- CBIC — CGST rule 62 — CMP-08 and GSTR-4
- GSTN — GSTR-3B — due by the 20th
- Central Board of Direct Taxes — Circular 07/2026 — audit-case due dates for AY 2026-27
- GSTN — QRMP scheme FAQ
- Income Tax Department — Advance tax instalments and dates
- CBIC — CGST rule 80 — GSTR-9 and GSTR-9C
- Income Tax Department — Income tax returns FAQ — belated and revised returns
Dates move. When a deadline is extended the department publishes a circular, and this page reads from the same record we quote on every other page — so if it has moved here, it has moved because the department moved it.
We publish what these pages say and link to them so you can read them yourself. Tax rules and portal pages change; if a link has moved or a figure has changed, tell us and we will check it.