---
type: "tool"
title: "GST Late Fee & Interest Calculator"
description: "Free GST late fee and interest calculator for delayed GSTR-3B and GSTR-1 filing. Covers nil and regular returns with standard turnover-based caps."
resource: "https://www.gstcalculators.in/gst-late-fee-calculator.html"
language: "en"
bundle_generated: "2026-10-12"
---

# GST Late Fee & Interest Calculator

Free GST late fee and interest calculator for delayed GSTR-3B and GSTR-1 filing. Covers nil and regular returns with standard turnover-based caps.

- Canonical page: [GST Late Fee & Interest Calculator](https://www.gstcalculators.in/gst-late-fee-calculator.html)
- Publisher: [Tool Master Hub / GSTCalculators.in](../site.md)
- Category: [Tax and Loan Calculators](../categories/taxloan.md)

This is a discovery summary of the public page, not an independently reviewed replacement. Use the canonical page for current inputs, assumptions, formulas, source links and results. The bundle generation date does not mean that tax rules were reviewed on that date.

## Topics on the page



## Questions and answers from the visible page

### What is the GST late fee for a regular return?

₹50 per day of delay (₹25 CGST + ₹25 SGST), capped based on annual turnover — typically ₹2,000 for turnover up to ₹1.5 crore, ₹5,000 up to ₹5 crore, and ₹10,000 above that, per return.

### What is the late fee for a nil return?

₹20 per day (₹10 CGST + ₹10 SGST), capped at ₹500 total per return, regardless of turnover.

### How is GST interest calculated?

Interest is charged at 18% per annum, calculated as simple interest on the outstanding tax liability for the number of days between the due date and the actual payment date.

### Do late fee caps ever change?

Yes — the GST Council periodically revises late fee caps and amnesty provisions. This calculator uses standard current caps; check the GST portal or a recent notification if you are filing after a long gap.

## Accuracy and corrections

[Methodology](https://www.gstcalculators.in/methodology.html) · [Editorial policy](https://www.gstcalculators.in/editorial-policy.html) · [Disclaimer](https://www.gstcalculators.in/disclaimer.html) · [Report a problem](https://www.gstcalculators.in/contact.html).