What is the GSTR-3B due date for October 2026?

20 November 2026 (a Friday) for monthly filers. Example: tax for October sales paid and filed on 20 November is on time. Filing on 21 November is 1 day late, and the late fee and 18% interest start counting from that day.

What is the GSTR-1 due date in November 2026?

11 November 2026 (a Wednesday) for monthly filers, for October sales. Quarterly (QRMP) filers do not file GSTR-1 in November. Theirs is for October to December and is due in January.

Do the 1 November 2026 GST changes move any return date?

No. The 1 November notifications changed a few rates and the rule for discounts given after a sale. None of them touches a filing date, and we found no CBIC extension for any November date.

I am a QRMP filer. What do I do in November?

Pay the tax for October by PMT-06 on 25 November. You may also add October invoices to the optional IFF by 13 November so your buyers can claim credit early. The quarterly GSTR-1 and GSTR-3B come later, in January 2027. Example: if your October tax is ₹40,000 in cash, pay it with PMT-06 by 25 November. No return is filed for it.

Which return decides whether I still get FY 2025-26 credit?

The October GSTR-3B, due 20 November 2026 for monthly filers, is the last regular return you can file before the 30 November cutoff. The November return is filed in December, which is too late. Example: a March 2026 purchase invoice missing from your earlier returns must go into the October GSTR-3B.

Are GSTR-7 and GSTR-8 due on the same day as GSTR-1?

No. GSTR-7 (GST TDS deductors) and GSTR-8 (e-commerce operators) for October are due on 10 November 2026, a day before the monthly GSTR-1 on 11 November. Most small businesses file neither.

GST Due Dates November 2026: GSTR-1, GSTR-3B, PMT-06, ITC

Monthly filers: GSTR-1 for October is due on 11 November 2026, and GSTR-3B on 20 November. Quarterly (QRMP) filers have nothing to file in November except paying their October tax by PMT-06 on 25 November. The 1 November GST changes did not move any of these dates.

Checked on 1 November 2026. These are the standard statutory dates. We found no CBIC notification extending any of them. CBIC can still extend a date by notification. If it does, we'll update this post.

GST dates in November 2026

Date	What is due	Who
7 Nov (Sat)	Income-tax TDS and TCS deposit for October	Anyone who deducted TDS or collected TCS in October
10 Nov (Tue)	GSTR-7 and GSTR-8 for October	GST TDS deductors (GSTR-7), e-commerce operators (GSTR-8)
11 Nov (Wed)	GSTR-1 for October	Monthly filers
13 Nov (Fri)	Optional IFF for October invoices	QRMP filers
20 Nov (Fri)	GSTR-3B for October	Monthly filers
25 Nov (Wed)	PMT-06, the tax payment for October	QRMP filers
30 Nov (Mon)	Last day to claim ITC of FY 2025-26 (Section 16(4))	Every regular taxpayer

The 7 November row is an income-tax date, not a GST return. It is here because the same people often handle both.

What 1 November changed, and what it did not

Several GST changes started on 1 November 2026. They are about rates and credit notes, not about filing:

Discounts given after a sale can now be handled with a credit note plus the buyer reversing the credit, as reported for Notification 03/2026-Central Tax. See bill of supply vs tax invoice vs credit/debit note.
Retreaded tractor tyres are at 5% and psyllium seeds (isabgol) are exempt. See the 57th GST Council post.

None of this changes GSTR-1 or GSTR-3B dates. Some posts online lump rate changes, return dates and income-tax dates into "everything that changes on 1 November". Use the table above for the return dates.

If you are a QRMP (quarterly) filer

November is a payment month for you, not a return month:

13 November: optional IFF. Use it to upload October invoices to buyers early, so they can claim credit sooner. You can skip it.
25 November: pay the tax for October with PMT-06, using either the fixed-sum or the self-assessment method.
January 2027, not November: the quarterly GSTR-1 for October to December is due on 13 January 2027, and the quarterly GSTR-3B on 22 or 24 January 2027, depending on your state. Some calendars online still show the October dates for the quarter, so check the dates before you plan around them.

30 November: the ITC cutoff for FY 2025-26

Section 16(4) lets you claim input tax credit on an invoice for a financial year only up to 30 November of the next year, or the date you file the annual return, whichever is earlier. For FY 2025-26, that is 30 November 2026. This is the standing rule, not a new notification.

What to do before the 20 November GSTR-3B:

Compare your purchase register with GSTR-2B for April 2025 to March 2026.
Ask suppliers who haven't filed GSTR-1 to file it. Their October GSTR-1 is due on 11 November, and that is what makes the invoice show up in your GSTR-2B.
Claim what is eligible in the October GSTR-3B on 20 November. The November return is filed in December, which is after the cutoff.

The same 30 November date is the deadline to issue a credit note that reduces your GST for FY 2025-26. See bill of supply vs tax invoice vs credit/debit note. For what a missed return costs, see GST late fee and interest, with worked examples.

Other dates people confuse with these

Q2 TDS statement: due on 31 October 2026, so it is already past. If you missed it, the TDS calculator shows the Section 427 late fee.
ITR for audit cases: 21 November 2026. See the tax audit due date post.
October GST dates: all passed. The October post is about last month. Its "today" and "tomorrow" lines were from 24 and 25 October.

A short plan for November

By 7 November: deposit income-tax TDS and TCS deducted in October.
By 10 November: GSTR-7 and GSTR-8, if you deduct or collect tax at source.
By 11 November: file GSTR-1 for October, so your buyers see the invoices in GSTR-2B.
By 13 November: QRMP filers may use IFF for October.
By 20 November: monthly filers file GSTR-3B for October, with the last FY 2025-26 credit.
By 25 November: QRMP filers pay October tax by PMT-06.
By 30 November: the Section 16(4) cutoff for FY 2025-26 credit.

Filed late? The GST late fee calculator works out the fee and the 18% interest. For your own dates, with an .ics file for reminders, use the GST Return Due Date Calendar.