GST Late Fee & Interest Calculator
Missed a due date? See exactly what you owe — late fee under Section 47 plus interest under Section 50 — using the caps CBIC actually notified, not the Act's ₹200/day headline.
GST Late Fee Caps in Force (2026)
| Return & turnover | Per day (CGST + SGST) | Maximum |
|---|---|---|
| GSTR-3B / GSTR-1 — nil | ₹20.00 | ₹500 |
| GSTR-3B / GSTR-1 — turnover up to ₹1.5 Cr | ₹50.00 | ₹2,000 |
| GSTR-3B / GSTR-1 — ₹1.5 Cr to ₹5 Cr | ₹50.00 | ₹5,000 |
| GSTR-3B / GSTR-1 — above ₹5 Cr | ₹50.00 | ₹10,000 |
| GSTR-4 — nil | ₹50.00 | ₹500 |
| GSTR-4 — with tax | ₹50.00 | ₹2,000 |
| GSTR-9 — turnover up to ₹5 Cr | ₹50.00 | 0.04% of state turnover |
| GSTR-9 — ₹5 Cr to ₹20 Cr | ₹100.00 | 0.04% of state turnover |
| GSTR-9 — above ₹20 Cr | ₹200.00 | 0.5% of state turnover |
How the Two Charges Work
Late fee — Section 47
Charged for every day the return is filed after its due date, whether or not any tax is due. The Act allows ₹200 a day, but CBIC has capped it far lower: GSTR-1 and GSTR-3B pay ₹50 a day with a ceiling of ₹2,000, ₹5,000 or ₹10,000 depending on last year's turnover. GSTR-9 has its own turnover-linked slabs from FY 2022-23.
Interest — Section 50
- Late payment (50(1)) — 18% a year, day by day, on the tax paid through the cash ledger. The part set off against ITC is not charged.
- Wrong ITC (50(3)) — 18% a year, but only on credit that was both claimed and actually used to pay tax.
- Interest runs from the day after the due date to the day of payment: tax × 18% × days ÷ 365.
Need the monthly deadlines? See the GST due dates calendar. Reconciling a whole year first? Try the GSTR-9 summary tool.
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