GSTR-1 (monthly) — due dates 2026
Statement of outward supplies for the previous month.
Who must file
Regular taxpayers with turnover > ₹5 crore, or those not under QRMP
Penalty if missed
Late fee ₹50/day (₹20/day for nil return), capped by turnover slab.
Upcoming due dates
| Due date | Filing | Type |
|---|---|---|
| 11 Jul 2026in 29 days | GSTR-1 (monthly)June 2026 | GST |
| 11 Aug 2026in 60 days | GSTR-1 (monthly)July 2026 | GST |
| 11 Sep 2026in 91 days | GSTR-1 (monthly)August 2026 | GST |
| 11 Oct 2026in 121 days | GSTR-1 (monthly)September 2026 | GST |
| 11 Nov 2026in 152 days | GSTR-1 (monthly)October 2026 | GST |
| 11 Dec 2026in 182 days | GSTR-1 (monthly)November 2026 | GST |
| 11 Jan 2027in 213 days | GSTR-1 (monthly)December 2026 | GST |
| 11 Feb 2027in 244 days | GSTR-1 (monthly)January 2027 | GST |
| 11 Mar 2027in 272 days | GSTR-1 (monthly)February 2027 | GST |
| 11 Apr 2027in 303 days | GSTR-1 (monthly)March 2027 | GST |
| 11 May 2027in 333 days | GSTR-1 (monthly)April 2027 | GST |
| 11 Jun 2027in 364 days | GSTR-1 (monthly)May 2027 | GST |