A delayed GST return doesn't carry one flat penalty, it accrues daily, separately for GSTR-1 and GSTR-3B, and separately again for interest on any unpaid tax. Knowing the exact number before you file helps you budget for it rather than being surprised at the payment screen.
Late Fee for GSTR-1
₹50 per day (₹25 CGST plus ₹25 SGST) for returns with actual sales data. For Nil returns, where there's no sales activity to report, the fee drops to ₹20 per day (₹10 plus ₹10). The maximum late fee for GSTR-1 is capped at ₹10,000.
Late Fee for GSTR-3B
Same structure as GSTR-1: ₹50 per day for non-nil returns, ₹20 per day for Nil returns, capped at ₹10,000 (₹5,000 CGST plus ₹5,000 SGST).
Interest on Unpaid Tax: A Separate Charge Entirely
Beyond the late fee for the return itself, interest at 18% per annum is charged on any net tax liability not paid by the due date, applicable specifically to GSTR-3B. This interest is calculated from the day after the due date until the date you actually pay, and it runs independently of the late fee, both apply simultaneously if you're both late and have unpaid tax.
Due Dates That Determine When the Clock Starts
- Monthly filers: GSTR-3B is due by the 20th of the following month
- Quarterly filers (QRMP scheme): due by the 22nd or 24th, depending on your state
Amnesty Schemes: Check Before You Assume the Standard Rate Applies
The government periodically issues amnesty schemes that waive or reduce late fees for delayed returns, usually tied to a specific window for clearing pending filings. Check the GST portal for any active waiver before assuming the standard fee structure applies to your situation, particularly if you're catching up on several overdue periods at once.
How to Use Our Free Calculator
Enter the return type (GSTR-1 or GSTR-3B), whether it's a Nil return, the due date, and the date you expect to actually file. The tool calculates the accumulated late fee instantly, so you know the number before you're at the payment stage on the GST portal.
Frequently Asked Questions
What is the maximum GST late fee I can be charged?
₹10,000 per return (GSTR-1 or GSTR-3B separately) for non-nil filings, or ₹10,000 combined for Nil filings, whichever return type applies to you.
Is there interest in addition to the late fee?
Yes, if there's unpaid tax, interest at 18% per annum applies separately from the late fee, calculated from the day after the due date to the date of actual payment.
Have GST late fees ever been waived?
The government has periodically announced amnesty schemes waiving or reducing late fees for overdue returns filed within a specific window. Check the GST portal for any current scheme before assuming the standard fee applies.
Calculate your exact GST late fee with the GST Late Fee Calculator before you file.
