GST Interest & Late Fee Calculator

Calculate interest and late fee for delayed GST payment

Privacy Notice: All calculations are performed locally in your browser. No data is transmitted or stored.

Tax Amount (₹)

Due Date

Actual Payment Date

Calculation Result

Enter tax amount and dates to calculate interest and late fee

Assumptions & Notes

• Interest calculated at 18% per annum (1.5% per month or part thereof)
• Late fee: ₹100 per day (₹50 each for CGST and SGST)
• Maximum late fee capped at ₹10,000 (₹5,000 each for CGST/SGST)
• This calculation is for GSTR-3B late filing/payment
• Different rates may apply for other GST returns
• Interest is calculated on a monthly basis (part of month = full month)

Important Disclaimer

This calculator provides indicative estimates of GST interest and late fee based on standard provisions. Actual liability may vary based on specific circumstances, return type, and amendments to GST law. This should not be relied upon for actual compliance or payment decisions.

Last updated: January 2026

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