GST Interest & Late Fee Calculator
Filed your GST return late? Estimate the interest and late fee you may owe — instantly and free.
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Interest is charged at 18% per annum on the tax due. Late fee is per day, split equally between CGST and SGST, subject to caps.
Estimated liability
Estimate only. Actual interest and late fee are computed by the GST portal and may include caps or notifications. Verify before paying.
How GST interest and late fees work
If you miss a GST return deadline, two charges apply. First, interest at 18% per annum on the outstanding tax, calculated from the due date until payment. Second, a late fee per day of delay — ₹50 per day for normal returns (₹25 CGST + ₹25 SGST) and ₹20 per day for nil returns (₹10 + ₹10), subject to maximum caps.
This calculator gives you a quick estimate so you know roughly what to expect. The exact amount is computed by the GST portal at the time of filing and may reflect the latest notifications and caps.
How to avoid GST late fees
The simplest way is timely filing. Aidwish handles GST registration and monthly or quarterly returns for businesses of every size, so you never miss a deadline or pay an avoidable penalty.
Frequently asked questions
How is GST interest calculated?
GST interest is charged at 18% per annum on the outstanding tax amount, calculated from the day after the due date until the date of payment.
What is the GST late fee per day?
For normal returns like GSTR-3B, the late fee is ₹50 per day (₹25 CGST + ₹25 SGST). For nil returns it is ₹20 per day (₹10 + ₹10), subject to maximum caps.
Is there a maximum late fee?
Yes. The government periodically notifies caps on late fees depending on turnover and return type. The GST portal applies the applicable cap at filing.
Can Aidwish help me file pending GST returns?
Yes. Aidwish handles GST registration and monthly or quarterly return filing, and can help clear pending returns and minimise penalties.
Need expert help?
Calculators give you a quick estimate. For exact figures and end-to-end handling, talk to an Aidwish expert — free.
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