Next dueGST
11 NOVGSTR-1 · Outward supplies · Oct 2026in 19 days 13 NOVIFF (QRMP) · B2B invoices · Oct 2026in 21 days 20 NOVGSTR-3B · Summary return · Oct 2026in 28 days 25 NOVPMT-06 (QRMP) · Monthly GST payment · Oct 2026in 33 days 31 DECGSTR-9 / 9C · Annual return · FY 2025-26in 69 days 13 JANGSTR-1 (QRMP) · Quarterly return · Oct–Dec 2026in 82 days 30 OCTAOC-4 · Financial statements · FY 2025-26in 7 days 7 NOVTDS / TCS deposit · Deducted in Oct 2026in 15 days
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GST

How to File GSTR-1 Online

GSTR-1 reports all your outward supplies (sales). Here is how to file it online on the GST portal.

Written byTax & Compliance Expert, TaxClue
Published
Updated
Reading time
4 min
Questions
4 answered
  • Medium Complexity
Topic
GST
Published
August 20, 2026
Last updated
Aug 20, 2026
Reading time
4 min
0:00
Last updated: August 2026Applies to: FY 2026-27Verified against: Government sources

How to File GSTR explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.

GSTR-1 reports all your outward supplies (sales). Here is how to file it online on the GST portal.

Steps to file GSTR-1

  • Log in to gst.gov.in and go to Returns Dashboard
  • Select the period and open GSTR-1
  • Add B2B, B2C, export, credit/debit note and HSN summary details
  • Use offline utility or auto-populated e-invoice data to save time
  • Preview, submit and file with DSC or EVC

Due date

GSTR-1 is due by the 11th of the following month (13th for QRMP quarterly filers).

Tips

  • Report invoice-wise B2B data accurately so buyers get ITC
  • Reconcile with your books and e-invoices before filing
  • File on time to avoid late fees and buyer mismatches

Frequently Asked Questions

How do I file GSTR-1 online?

Log in to the GST portal, open GSTR-1 for the period, add your sales details and file with DSC/EVC.

What is the due date for GSTR-1?

The 11th of the next month (13th for QRMP quarterly filers).

Can GSTR-1 be revised?

No — corrections are made via amendments in a later period's GSTR-1.

Does e-invoice data auto-fill GSTR-1?

Yes — e-invoice details auto-populate the relevant GSTR-1 tables.

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Quick recapKey facts & short answers

Key Facts About How to File GSTR

  • Applies in: All states across India, under the relevant central law.
  • Mode: Mostly online via the official government portal.
  • Typical timeline: Ranges from a few days to a few weeks depending on the case.
  • Non-compliance: May attract penalties, interest or late fees.
  • Expert help: TaxClue completes the entire process end to end for you.

How do I file GSTR-1 online?

Log in to the GST portal, open GSTR-1 for the period, add your sales details and file with DSC/EVC.

What is the due date for GSTR-1?

The 11th of the next month (13th for QRMP quarterly filers).

Compliance is cheapest on the day it falls due and gets more expensive every day after.

— TaxClue Compliance Desk

How to File GSTR: a key compliance topic in Indian tax and corporate law that businesses and individuals must understand to remain compliant.

Related Services & Guides

Why This Matters

Staying compliant with Indian regulations protects your business from penalties, interest and unnecessary legal trouble. It is always wise to maintain proper records and documentation so that any future scrutiny can be handled smoothly. Rules and thresholds in gst are revised periodically, so it helps to review your obligations at the start of each financial year. Professional guidance from a qualified CA, CS or advocate ensures that filings are accurate and submitted well before the due date.

Small businesses and startups especially benefit from setting up a simple compliance calendar to track recurring deadlines. Government portals now allow most applications and filings to be completed online, reducing paperwork and turnaround time. Keeping your PAN, registration certificates and board resolutions organised makes every subsequent filing faster. When in doubt, it is better to seek clarification early rather than risk a notice or a late-filing penalty later.

A clear understanding of the applicable law helps you make confident, well-informed business decisions. TaxClue's experts regularly assist businesses across India with end-to-end gst support at transparent, affordable pricing. Timely compliance also improves your credibility with banks, investors and government authorities. Reviewing your obligations with a professional at least once a year keeps your business audit-ready and stress-free.

Staying compliant with Indian regulations protects your business from penalties, interest and unnecessary legal trouble. It is always wise to maintain proper records and documentation so that any future scrutiny can be handled smoothly. Rules and thresholds in gst are revised periodically, so it helps to review your obligations at the start of each financial year. Professional guidance from a qualified CA, CS or advocate ensures that filings are accurate and submitted well before the due date.

Small businesses and startups especially benefit from setting up a simple compliance calendar to track recurring deadlines.

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Vivek Sharma Tax & Compliance Expert at TaxClue
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Disclaimer: This article is for general informational purposes only and does not constitute professional tax, legal or financial advice. Laws, rates and due dates change and can vary by individual case — always verify with the relevant government source (e.g. mca.gov.in, incometax.gov.in) or consult a qualified professional before acting. TaxClue accepts no liability for decisions taken based on this content.

People also ask

Questions, answered

Short, direct answers to the 4 questions readers ask most on this topic.

Log in to the GST portal, open GSTR-1 for the period, add your sales details and file with DSC/EVC.

The 11th of the next month (13th for QRMP quarterly filers).

No — corrections are made via amendments in a later period's GSTR-1.

Yes — e-invoice details auto-populate the relevant GSTR-1 tables.

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