GSTR-1 due dates for 2026-27
A list of every sale you made in the period, invoice by invoice for business customers. Whatever you report here shows up in your buyers' GSTR-2B, so their input tax credit depends on it.
- Who it applies to
- Every regular GST-registered business. Monthly if turnover is above ₹5 crore or you haven't opted for QRMP; quarterly under QRMP.
- When
- Monthly filers: the 11th of the next month. QRMP filers: the 13th of the month after each quarter.
- How often
- Every month
- If you miss it
- A late fee of ₹50 a day (₹20 a day for a nil return) until you file, capped between ₹500 and ₹10,000 by turnover. Your buyers can't claim credit on your invoices meanwhile, and GSTR-3B for the period stays locked until GSTR-1 is filed.
Every GSTR-1 date in this calendar
| For the period | Due date | For | Status |
|---|---|---|---|
| March 2026 | 11 April 2026Saturday | Monthly filers | |
| Jan–Mar 2026 | 13 April 2026Monday | Quarterly (QRMP) filers | |
| April 2026 | 11 May 2026Monday | Monthly filers | |
| May 2026 | 11 June 2026Thursday | Monthly filers | |
| June 2026 | 11 July 2026Saturday | Monthly filers | |
| Apr–Jun 2026 | 13 July 2026Monday | Quarterly (QRMP) filers | |
| July 2026 | 11 August 2026Tuesday | Monthly filers | |
| August 2026 | 11 September 2026Friday | Monthly filers | |
| September 2026 | 11 October 2026Sunday | Monthly filers | |
| Jul–Sep 2026 | 13 October 2026Tuesday | Quarterly (QRMP) filers | |
| October 2026 | 11 November 2026Wednesday | Monthly filers | |
| November 2026 | 11 December 2026Friday | Monthly filers | |
| December 2026 | 11 January 2027Monday | Monthly filers | |
| Oct–Dec 2026 | 13 January 2027Wednesday | Quarterly (QRMP) filers | |
| January 2027 | 11 February 2027Thursday | Monthly filers | |
| February 2027 | 11 March 2027Thursday | Monthly filers | |
| March 2027 | 11 April 2027Sunday | Monthly filers | |
| Jan–Mar 2027 | 13 April 2027Tuesday | Quarterly (QRMP) filers | |
| April 2027 | 11 May 2027Tuesday | Monthly filers | |
| May 2027 | 11 June 2027Friday | Monthly filers |
What to keep ready
- Sales invoices, with the buyer's GSTIN for B2B sales
- Debit and credit notes issued in the period
- HSN-wise summary of what you sold
- Totals of sales to consumers (B2C) and any advances received
Frequently asked questions
When is GSTR-1 due in 2026-27?
Monthly filers: the 11th of the next month. QRMP filers: the 13th of the month after each quarter.
Who does GSTR-1 apply to?
Every regular GST-registered business. Monthly if turnover is above ₹5 crore or you haven't opted for QRMP; quarterly under QRMP.
What happens if I miss GSTR-1?
A late fee of ₹50 a day (₹20 a day for a nil return) until you file, capped between ₹500 and ₹10,000 by turnover. Your buyers can't claim credit on your invoices meanwhile, and GSTR-3B for the period stays locked until GSTR-1 is filed.
Shown on the calendar for: monthly filers, quarterly (qrmp) filers.
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