🔑 In one line
October packs the GST Council meeting, GSTR-1, GSTR-3B, CMP-08, and ITC-04 into one month — and GSTR-3B's due date falls exactly on Dussehra. Here's how to plan around it.
7 Oct
GST Council meeting
20 Oct
GSTR-3B due = Dussehra
8
GST due dates this month
Why October is different this year
Most months, GST compliance is routine. This October has a genuine scheduling clash most calendars won't flag: the monthly GSTR-3B due date — the 20th — lands exactly on Dussehra, a public holiday. If your accounts team or CA is off for the festival, filing on the day itself may not be realistic, so the smarter move is finishing it a day or two early.
Every October 2026 GST due date
| Date | Form | Who |
|---|---|---|
| 10 Oct | GSTR-7 / GSTR-8 | TDS deductors / e-commerce TCS |
| 11 Oct | GSTR-1 (monthly) | Monthly filers, Sept data |
| 13 Oct | GSTR-1 (QRMP), GSTR-5, GSTR-6 | Quarterly filers, NRTPs, ISDs |
| 18 Oct | CMP-08 | Composition dealers, Q2 |
| 20 Oct | GSTR-3B (monthly), GSTR-5A | Monthly filers — Falls on Dussehra |
| 22 / 24 Oct | GSTR-3B (QRMP) | Category X / Category Y states |
| 25 Oct | ITC-04 | Job-work return, half-yearly (>₹5 Cr) |
Not a filing deadline, but watch it
57th GST Council meeting — 7 October
Chaired by FM Nirmala Sitharaman, this is a process-reform focused session — e-invoicing, ITC rules, and registration simplification, with no rate changes expected. It lands less than two weeks before your GSTR-3B is due, so any immediately-notified changes could affect how you file.
Category X states (South/West — Chhattisgarh, MP, Gujarat, Maharashtra, Karnataka, Goa, Kerala, Tamil Nadu, Telangana, Andhra Pradesh) file QRMP GSTR-3B by 22 October; the rest of India by 24 October.
How to plan around the Dussehra clash
✅ Avoid the last-minute scramble
1
Reconcile GSTR-2B early — ideally by 17-18 October, so ITC figures are locked before the holiday rush.
2
File GSTR-3B a day or two ahead — the portal often sees heavy traffic near deadlines even without a holiday clash.
3
Confirm your CA/accounts team's availability around Dussehra — don't assume someone will be reachable on the 20th.
4
Watch for Council-meeting fallout — if anything is notified immediately on 7 October, check before you file.
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