GSTR-1 Due Dates & Late Fees Explained

Knowing your GSTR-1 due date is the difference between smooth compliance and avoidable penalties. GSTR-1, the return for your outward supplies (sales), has different deadlines depending on whether you file monthly or under the QRMP scheme, and missing the GSTR-1 deadline triggers a late fee and can delay your buyers' input tax credit. This guide explains the dates, the late fee mechanics, and how to stay ahead of every deadline.

What is the GSTR-1 due date for monthly filers?

Regular taxpayers who file monthly must furnish GSTR-1 for each tax period after the month closes. The monthly GSTR-1 due date generally falls on the 11th of the following month, so sales for a given month are typically reported by the 11th of the next. Filing on time keeps the data flowing to your buyers' auto-drafted credit statements without delay.

Because the government occasionally revises or extends dates, treat the 11th as the general rule and always confirm the exact current deadline for your period on the official portal at https://www.gst.gov.in. If you are new to the return itself, start with our complete step-by-step GSTR-1 filing guide.

What are the QRMP due dates (quarterly) and how does IFF fit in?

Smaller taxpayers who opt into the QRMP (Quarterly Return, Monthly Payment) scheme file GSTR-1 once per quarter rather than every month. The quarterly GSTR-1 due date generally falls on the 13th of the month following the end of the quarter. So a quarter's sales are typically reported by the 13th of the month after it closes.

To avoid making business buyers wait up to three months for credit, QRMP filers can use the Invoice Furnishing Facility (IFF) in the first two months of the quarter. IFF lets you push B2B invoices to the portal early, generally by the 13th of the following month, so customers can claim input tax credit sooner. IFF is optional and value-capped; any invoices not furnished through IFF are reported in the quarterly GSTR-1.

QRMP timelines differ meaningfully from the monthly cadence, so verify the precise dates that apply to your registration on https://www.gst.gov.in before each period.

What happens if you miss the GSTR-1 deadline?

Missing the GSTR-1 deadline has three practical consequences:

• Late fee. A per-day late fee applies for the delay, subject to a cap, with a reduced fee for nil returns. The portal computes this automatically.
• Knock-on effect on GSTR-3B. Late or skipped GSTR-1 can disrupt the data that auto-populates your summary return, GSTR-3B, where you actually pay tax. Interest applies on any tax paid late through that return. To understand how the two returns interact, see our comparison of GSTR-1 vs GSTR-3B.
• Impact on your buyers' ITC. This is often the most painful cost. Because your B2B invoices flow into your buyers' GSTR-2B, a late GSTR-1 delays their input tax credit. Repeated delays can strain customer relationships and even lose you business.

Note that the late fee and interest are distinct: the late fee is for filing the return late, while interest accrues on tax paid late. Confirm current rates on https://www.gst.gov.in.

How are late fees calculated?

The GSTR-1 late fee is charged per day of delay, counted from the day after the due date until you actually file, and is subject to a maximum cap that varies with turnover. Nil returns attract a lower per-day fee than returns with outward supplies. Because the specific per-day amounts and caps are periodically revised by notification, this guide does not state fixed figures, you should confirm the current late fee structure on the official portal at https://www.gst.gov.in.

The key takeaways are simple: the longer you wait, the more you pay (up to the cap), and even a nil period left unfiled accumulates a fee. Filing promptly, even when there is nothing to report, costs nothing in attention and avoids needless charges.

How can you avoid missing deadlines?

A few habits make late filing a non-issue:

• Reconcile sales weekly, not at month-end. Keeping your sales register clean throughout the period means filing is a quick review, not a scramble.
• Set reminders ahead of the date. Build alerts a few days before the 11th (monthly) or 13th (QRMP), so you have a buffer to fix errors.
• File early in the window. Portal traffic peaks near deadlines. Filing a few days early avoids slow load times and last-minute surprises.
• File nil returns on time too. A quiet month still needs a return, do not let it slip.
• Use invoicing software that keeps data returns-ready. When GSTINs, tax rates, and HSN codes are validated at the point of invoicing, the return practically files itself.

Never miss a GSTR-1 due date again. Invodo keeps your sales data clean, validated, and returns-ready all month long, so filing on the 11th or 13th is a quick review instead of a deadline-day fire drill. See the plans that fit your business on our pricing page and turn GST deadlines into a non-event.