GST Late Fee & Interest Calculator 2026
Calculate late filing fee for GSTR-1, GSTR-3B, GSTR-9 and 18% interest on tax liability for delayed payment.
Return Details
18% p.a. interest on unpaid tax from due date to payment date
Result
Enter due date and filing date to calculate.
GST Late Fee Quick Reference
| Return | Normal (₹/day) | Nil Return (₹/day) | Max Fee | Interest |
|---|---|---|---|---|
| GSTR-1 | ₹50/day | ₹20/day | Max ₹10,000 (or turnover-based) | None |
| GSTR-3B | ₹50/day | ₹20/day | Up to ₹10,000 (turnover-based) | 18%/yr on unpaid tax |
| GSTR-4 | ₹50/day | ₹20/day | Max ₹2,000 | None |
| GSTR-9 | ₹200/day | ₹200/day | 0.25% of turnover | None |
| GSTR-9C | ₹200/day | ₹200/day | 0.5% of turnover | None |
FOR CA · ACCOUNTANT · TAX CONSULTANT · FINANCE ADVISOR
Become a FastFee Partner.
If your clients collect fees, EMIs, rent, maintenance, subscriptions or other recurring dues, introduce FastFee and explore an applicable partner opportunity.