Last Updated: June 5, 2026 | Reviewed by: Parul Singh (GST Practitioner, 15+ years experience)
Never miss a GST return due date again! Here is the complete GST return filing calendar for 2026-27 with deadlines for GSTR-1, GSTR-3B, GSTR-4, and GSTR-9. Bookmark this page and stay compliant.
📌 Key Points: GSTR-1 due date = 11th of next month | GSTR-3B due date = 20th of next month | QRMP scheme for small businesses
GST Return Due Dates — FY 2026-27 Monthly Calendar
| Month | GSTR-1 Deadline | GSTR-3B Deadline | GSTR-4 (Quarterly) | Challan Payment |
|---|---|---|---|---|
| Apr 2026 | 11 May | 20 May | 30 May 2026 | 20 May / 20 Jun / 20 Jul |
| May 2026 | 11 Jun | 20 Jun | ||
| Jun 2026 | 11 Jul | 20 Jul | ||
| Jul 2026 | 11 Aug | 20 Aug | 30 Aug 2026 | 20 Aug / 20 Sep / 20 Oct |
| Aug 2026 | 11 Sep | 20 Sep | ||
| Sep 2026 | 11 Oct | 20 Oct | ||
| Oct 2026 | 11 Nov | 20 Nov | 30 Nov 2026 | 20 Nov / 20 Dec / 20 Jan |
| Nov 2026 | 11 Dec | 20 Dec | ||
| Dec 2026 | 11 Jan 2027 | 20 Jan 2027 | ||
| Jan 2027 | 11 Feb | 20 Feb | 30 Feb 2027 | 20 Feb / 20 Mar / 20 Apr |
| Feb 2027 | 11 Mar | 20 Mar | ||
| Mar 2027 | 11 Apr | 20 Apr |
⚠️ GSTR-9 Annual Return: For FY 2025-26, the GSTR-9 due date is December 31, 2026. Mandatory for taxpayers with turnover exceeding ₹2 crore.
GST Return Time Limits — What If You Miss the Deadline?
| Scenario | Consequence | Action Required |
|---|---|---|
| 1-30 days late | Late fee ₹50/day + 18% interest | File immediately and pay |
| More than 30 days late | Accumulating late fee (max ₹5,000) | File before notice arrives |
| Non-filing for 6+ months | Registration may be suspended/cancelled | File all pending returns immediately |
| Nil return filed late | Reduced fee ₹20/day (max ₹2,000) | File nil return to avoid escalation |
💡 Pro Tip: Set up a monthly reminder for the 10th of every month to file GSTR-1 and the 18th to file GSTR-3B. Need help? WhatsApp us at +91-9540104776
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Need Help with GST Return Filing?
Parul Singh — GST Practitioner & Tax Consultant, 15+ years, 1,500+ businesses served
WhatsApp: +91-9540104776