Your accountant didn't sign up to decode new GST rules every month.

1010 stays current so your team doesn't have to. Compliance on autopilot.

See How It Works — No Credit Card

GST Filing Due Date Calendar

Never miss a GST return deadline. See upcoming due dates for GSTR-1, GSTR-3B, and GSTR-9 — with QRMP quarterly support.

Next Deadlines

GSTR-1Outward supplies (sales invoices)
Fri, 11 Sept, 2026
32 days left
GSTR-3BMonthly summary return with tax payment
Sun, 20 Sept, 2026
41 days left
GSTR-9Annual return
Fri, 31 Dec, 2027
508 days left

6-Month Calendar

PeriodGSTR-1 DueGSTR-3B Due
August 2026Fri, 11 Sept, 2026Sun, 20 Sept, 2026
September 2026Sun, 11 Oct, 2026Tue, 20 Oct, 2026
October 2026Wed, 11 Nov, 2026Fri, 20 Nov, 2026
November 2026Fri, 11 Dec, 2026Sun, 20 Dec, 2026
December 2026Mon, 11 Jan, 2027Wed, 20 Jan, 2027
January 2027Thu, 11 Feb, 2027Sat, 20 Feb, 2027

Late Filing Penalties

GSTR-1: ₹50/day (₹25 CGST + ₹25 SGST), max ₹10,000 per return. Nil return: ₹20/day.
GSTR-3B: ₹50/day (₹25 CGST + ₹25 SGST), max ₹10,000 per return. Nil return: ₹20/day. Plus 18% interest on outstanding tax.
GSTR-9: ₹200/day (₹100 CGST + ₹100 SGST), max 0.50% of turnover in the state/UT.

GST Return Filing Deadlines for 2026

Every GST-registered business in India must file periodic returns. Missing deadlines attracts late fees and interest. Here are the standard deadlines:

  • GSTR-1 (outward supplies): 11th of the following month. Quarterly filers (QRMP): 13th of the month after the quarter ends.
  • GSTR-3B (summary + tax payment): 20th of the following month. Quarterly filers: 22nd–24th of the month after the quarter ends.
  • GSTR-9 (annual return): 31st December of the following financial year.

What is QRMP Scheme?

The Quarterly Return Monthly Payment (QRMP) scheme is available for taxpayers with aggregate turnover up to ₹5 crore. Under QRMP, you file GSTR-1 and GSTR-3B quarterly instead of monthly, but still pay tax monthly via PMT-06 by the 25th. You can also use the Invoice Furnishing Facility (IFF) in months 1 and 2 of the quarter for B2B invoices so your buyers can claim ITC promptly.

How to Avoid GST Late Fees

The best way to avoid late fees is automation. 1010's AI accounting software automatically prepares your GSTR-1 and GSTR-3B from your validated ledger data, sends deadline reminders, and lets you file directly from the app. No more last-minute panic.

Related GST Tools

GST Calculator →

Calculate CGST, SGST, IGST split for any amount

GSTIN Validator →

Verify any GSTIN number instantly

HSN Code Search →

Find correct HSN/SAC codes with GST rates

GST Notice Guide →

How to respond to DRC-01, ASMT-10 and other notices

Read more: How to File GSTR-3B · GST Notice Response Guide