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Tax Calculators

GST Late Fee Calculator

Verified formula Updated Jun 2026 Private — runs on your device

Enter details
₹
days
Verified formula Private

Total payable

₹11,648

Late fee (₹50/day)
₹1,500
Interest (18% p.a.)
₹148

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the GST Late Fee Calculator

The GST Late Fee Calculator works out your total payable, along with 2 related figures in an instant. Enter tax liability and days delayed and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the tax liability.
  2. Enter the days delayed.
  3. Read off your total payable, together with late fee (₹50/day) and interest (18% p.a.) — the calculator updates automatically, with no button to press.

Formula

The GST Late Fee Calculator uses the formula:

Total payable = Tax liability + Days delayed × 50 + Tax liability × 0.18 × Days delayed ÷ 365

Worked example

For example, with tax liability of ₹10,000 and days delayed of 30 days, the total payable is ₹11,648.

Inputs used
Tax liability ₹10,000
Days delayed 30 days
Results
Late fee (₹50/day) ₹1,500
Interest (18% p.a.) ₹148
Total payable ₹11,648

Results are estimates for educational use, not professional advice.

Key terms explained

GST
Goods and Services Tax — an indirect tax added to the price of goods and services.

Frequently asked questions

For most GSTR returns the late fee is ₹50 per day of delay (₹25 CGST + ₹25 SGST), and ₹20 per day for nil returns, subject to caps. This tool uses the ₹50/day rate.

Interest is charged at 18% per annum on the outstanding tax, for the number of days the payment is delayed: interest = tax × 18% × days ÷ 365.

Yes. The late fee is capped based on turnover and return type, and the government has offered amnesty caps in some periods. Check the current notification for your case.

Yes, but at a lower rate of ₹20 per day for nil returns. This calculator assumes a normal return with tax due, so adjust if your return is nil.

Enter the tax liability. Enter the days delayed. Read off your total payable, together with late fee (₹50/day) and interest (18% p.a.) — the calculator updates automatically, with no button to press.

GST in India Explained: Rates, Calculation and Examples

A plain-English guide to India's Goods and Services Tax — why it was introduced, the rate slabs, how to add and remove GST, input tax credit, the CGST/SGST/IGST split, and who must register, with worked examples.

3 min read

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