Free tool · GST
GST Interest Calculator
Work out the interest on GST paid after the due date — 18% per annum on tax paid late, or 24% on excess ITC claimed — for any number of delay days.
Interest payable
₹739.73
- Per day
- ₹24.66
- Tax + interest
- ₹50,739.73
Interest = tax × rate% × days ÷ 365. Indicative — confirm on the GST portal.
Frequently asked questions
What is the GST interest rate?
18% per annum on tax paid after the due date, and 24% per annum on input tax credit claimed in excess or output liability reduced wrongly.
How is it computed?
Interest = tax × rate% × days of delay ÷ 365. The tool also shows the per-day interest and the tax-plus-interest total.
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