GST Late Fee & Interest Calculator
See the late fee and interest for filing GSTR-1 or GSTR-3B after the due date — ₹50/day (₹20 for nil returns) plus 18% p.a. interest on tax paid late. An estimate to plan your payment before you file.
Drives the 18% p.a. interest. Ignored for nil returns.
- Late fee (₹50/day)
- ₹750.00
- Interest (18% p.a.)
- ₹147.95
- Total
- ₹897.95
Indicative only. Late-fee caps are turnover-linked and the government periodically waives or reduces them — confirm the payable amount on the GST portal.
Frequently asked questions
How much is the GST late fee per day?
For most returns it is ₹50 per day (₹25 CGST + ₹25 SGST) and ₹20 per day (₹10 + ₹10) for a nil return, subject to a cap. The cap is turnover-linked and the government periodically reduces or waives it.
How is GST interest calculated?
Interest is charged at 18% per annum on the net tax paid in cash after the due date, for the number of days of delay: tax × 18% × days ÷ 365.
Is this the exact amount I will pay?
It is an indicative estimate. Actual caps depend on your turnover and any amnesty/waiver in force — always confirm the payable amount on the GST portal before filing.
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