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Indian Finance 🇮🇳

GST Penalty Calculator — Calculations & Slabs for FY 2026-27

Enter your unpaid GST amount and delay days to compute the late fee, interest at 18% p.a., and total dues owed under the CGST Act 2017.

1. GST Return Details

Frequently Asked Questions (FAQ)

What is the daily rate for GST late filing fees?

For active returns (GSTR-1 & GSTR-3B), the standard late fee is ₹50 per day (₹25 CGST + ₹25 SGST). For Nil returns (returns with zero tax liability or transactions), the late fee is reduced to ₹20 per day (₹10 CGST + ₹10 SGST).

Is there a maximum cap on GST late fees?

Yes. The maximum cap for GSTR-1 and GSTR-3B is rationalized as follows: 1) Nil returns: Capped at ₹500. 2) Taxpayers with turnover up to ₹1.5 Crore: Capped at ₹2,000. 3) Turnover between ₹1.5 Crore and ₹5 Crore: Capped at ₹5,000. 4) Turnover above ₹5 Crore: Capped at ₹10,000.

How is interest calculated on delayed tax payments?

If you fail to pay your tax liability on time, you must pay interest at the rate of 18% per annum on the net tax liability paid in cash (excluding ITC). The interest is calculated daily, starting from the day after the due date until the day of payment.

Can I pay GST late fees using my Input Tax Credit (ITC)?

No. Under statutory GST rules, all late fees and interest penalties must be paid strictly in cash through the Electronic Cash Ledger. You cannot utilize the Electronic Credit Ledger (ITC) to discharge penalty liabilities.

Where can I verify the source data for this calculator?

You can verify the values against the official notifications listed in our data sources section at the bottom of the page.

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About This Calculator

Target Audience: Salaried taxpayers, investors & retirees planning Indian tax & wealth growth

💡 What Does This Calculator Do?

This calculator computes the late filing fees and interest penalties for various GST returns in India (GSTR-1, GSTR-3B, GSTR-4, and GSTR-9) under the latest rules. It handles regular vs composition schemes, nil vs active returns, and calculates the 18% annual interest on delayed tax payments.

engine_type: compiled | format: inr

📋 How to Use It

  1. 1
    Return Type: Select the GST return form (GSTR-1, GSTR-3B, GSTR-4, GSTR-9).
  2. 2
    Days Late: Enter the number of days delayed beyond the official due date.
  3. 3
    Taxpayer Type / Return Status: Select regular, composition scheme, or nil return.
  4. 4
    Unpaid Tax Amount (₹, optional): Enter any pending tax liability to calculate interest.

🧬 The Logic Explained Simply

  • The Concept: Taxpayers who delay filing GST returns must pay a daily late fee, which is capped at various levels based on business turnover and return type. If there is an unpaid tax liability, an additional interest of 18% per annum is levied on the net tax due, calculated on a daily basis.
  • The Formula:

Late Fee = Days Late × Daily Rate (capped at the maximum limit for the selected return and taxpayer category)

Interest = Unpaid Tax × (18 / 100) × (Days Late / 365)

Total Penalty = Late Fee + Interest

💡 Real-World Calculation Breakdown

Suppose you file an active GSTR-3B return 10 days late under a Regular Taxpayer status (AATO <= 1.5 Cr), with a pending tax liability of ₹50,000.

  • Daily Late Fee Rate = ₹50/day (₹25 CGST + ₹25 SGST)
  • Late Fee = 10 Days × ₹50/day = ₹500
  • Daily Interest Rate = 18% / 365 = 0.0493% per day
  • Unpaid Tax Interest = ₹50,000 × 18% × (10 / 365) = ₹247
  • Total GST Penalty = Late Fee (₹500) + Interest (₹247) = ₹747

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