Build my compliance calendar: GST, income tax and TDS
Different businesses file different returns. Answer four questions and subscribe only to the due dates that apply to you.
2 calendars cover your due dates
GST returns: quarterly (QRMP) filers · Income tax: individuals and businesses
Why
- You have non-salary income, so advance tax instalments apply if your yearly tax is ₹10,000 or more.
| Date | Due |
|---|---|
| 13 Oct 2026 | GSTR-1 due (quarterly) |
| 22 Oct 2026 | GSTR-3B due (quarterly, Category X states) |
| 24 Oct 2026 | GSTR-3B due (quarterly, Category Y states) |
| 31 Oct 2026 | Income tax return due (audit cases) |
| 13 Nov 2026 | IFF (optional B2B invoices) due |
| 15 Dec 2026 | Advance tax: 3rd instalment (75%) |
| 31 Dec 2026 | Last date for belated or revised return |
| 15 Mar 2027 | Advance tax: final instalment (100%) |
Next steps
Normal due dates; extensions are common. Not tax advice — confirm with your CA.
Common questions
What if a due date is extended?
Extensions are announced by notification. The calendar shows the normal date; check the portal before filing.
Do I need a separate calendar for each?
You can subscribe to several. Each appears as its own calendar you can hide or colour in your app.
Sources and last check
We list every rate, limit and date this page relies on, where it comes from and when we last checked it. Rules change: please confirm on the official website before you act. Spotted something out of date? Tell us.
- Recurring tax and GST due datesVerified 13 Oct 2026
Due dates are often extended by notification. Always check the portal before filing. Quarterly GSTR-3B is due on the 22nd or 24th depending on your state.
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