This guide is general information. If you would rather a chartered accountant handled it, see GST Return Filing or GST Notice & Appeals.
Late filing under GST has two costs: a late fee for not filing on time and interest for paying tax late. They are separate and both can apply.
Late fee
- A fixed amount per day of delay, split equally between CGST and SGST
- A lower per-day amount applies for nil returns
- A cap applies, and the cap depends on the type of return and the taxpayer's turnover
As a reference point, the standard fee has been ₹50 per day (₹25 CGST and ₹25 SGST) and ₹20 per day for nil returns, but amounts and caps are set by notification and have changed. Check the current notification.
Interest
Interest at 18% a year is charged on tax paid after the due date, calculated on the amount of tax paid late. A higher rate of 24% applies in some cases, such as claiming excess input tax credit.
Example
If your net GST payable is ₹1,00,000 and you pay it 10 days late, interest is roughly ₹1,00,000 × 18% × 10 / 365, which is about ₹493, in addition to the late fee for the return.
Other consequences
- You may be unable to file GSTR-1 if earlier GSTR-3B returns are pending, subject to the rules
- Registration can be cancelled for not filing returns for a continuous period
- Your buyers may lose credit if you do not file GSTR-1
Reducing the damage
File as soon as you can. Late fees accumulate daily up to the cap. If you have several pending returns, prioritise the oldest and speak to a CA about relief schemes, if any are notified.
How interest is calculated, step by step
Interest runs on the amount of tax paid late, from the day after the due date until the day you pay. The formula is: tax paid late × interest rate × number of days late ÷ 365. Interest on the net liability paid in cash is the usual basis, so if part of your liability was set off against input credit on time, interest applies only to the cash portion paid late.
Late fee in practice
- The fee is charged per day from the due date until the return is filed, and it stops at the cap.
- It is split equally between the central and state tax.
- Nil returns attract a lower daily amount.
- The fee is charged for each return separately, so a late GSTR-1 and a late GSTR-3B each carry their own fee.
Mistakes that make it worse
- Paying the tax on time but filing the return late. The fee still applies.
- Filing the return on time but paying the tax late. Interest applies.
- Ignoring nil returns for several months, because the fee adds up and the registration is at risk.
- Claiming credit that is not in GSTR-2B and having to reverse it later with interest.
If you have many pending returns
File the oldest period first, because the portal generally requires earlier returns to be filed before later ones. Work out the total fee and interest before you start so you can budget for it. If an amnesty or fee-waiver scheme has been notified for the period, it can save a lot, but such schemes apply only for a limited window.
How to plan cash for GST
Interest and fees often arise because a business does not have funds ready on the due date. Treat GST collected from customers as money that belongs to the government. Move it to a separate account or track it in your books each month. Check your estimated liability a week before the due date and arrange funds, so that payment and filing happen on time.
Checklist to avoid fees
- Calendar the due dates for each registration and each return.
- Assign one person responsible for each filing, and a backup.
- Reconcile credit before the last week.
- File nil returns on time.
- Keep portal login details and registered mobile number secure and current.
Get the facts before you pay
If you receive a notice about late fees, check the period, the due date, the actual filing date and the rate applied. Errors do happen. If the amount looks wrong, reply with a clear computation and the supporting dates. Also check whether a relief scheme or waiver applied to your period before you pay.
Frequently asked questions
Is the GST late fee refundable?
Generally no. In some cases the government has waived or reduced the fee for specified periods by notification, and those waivers apply to returns filed within the window.
Is interest charged if there is no tax payable?
No. Interest is charged on tax paid late. A nil return attracts only the late fee.
Can GST registration be cancelled for late filing?
Yes. Failure to file returns for a continuous period can lead to a notice and cancellation of the registration, which can be revoked only within limits.
Does the late fee apply to the annual return as well?
Yes. GSTR-9 attracts a late fee per day with a cap linked to turnover, for the taxpayers who are required to file it.
This content is for general information and does not constitute professional advice. Laws, rates and due dates change; confirm the current position for your case. Section references are to the Income-tax Act, 1961 unless stated; the Income-tax Act, 2025 applies to later periods with renumbered sections.