Short answer: since the Finance Act 2023, a GST return cannot be furnished after three years from its due date. That applies to GSTR-1, GSTR-3B, GSTR-9 and GSTR-8. The portal began enforcing it from July 2025. Once a period is barred, the return can no longer be filed in the ordinary course — but the liability under it does not disappear.
This changes what non-filing means. It used to be an expensive delay. It is now capable of becoming permanent.
What changed
The Finance Act 2023 inserted a restriction into Sections 37, 39, 44 and 52 of the CGST Act: a registered person shall not be allowed to furnish the return after the expiry of three years from the due date.
The provision sat unenforced for a period. GSTN implemented it on the portal from 1 July 2025, with the restriction biting for returns falling due from October 2025 onward. So this is now operating, not pending.
| Return | Section | What it covers |
|---|---|---|
| GSTR-1 | 37 | Outward supplies |
| GSTR-3B | 39 | Summary return and payment |
| GSTR-9 / 9C | 44 | Annual return and reconciliation |
| GSTR-8 | 52 | E-commerce operator TCS statement |
The bar dates are staggered, not annual
A point that causes real confusion: the three years runs from each return's own due date, not from the end of the financial year.
Within a single financial year your GSTR-1 for April, your GSTR-3B for April, your GSTR-1 for May and so on all have different due dates, and therefore different bar dates roughly a month apart. The annual return for the same year has a due date of 31 December following, so it bars later still.
The practical consequence: you cannot think in terms of "FY 2022-23 is safe until X". Periods within a year fall away one at a time, in sequence, and the earliest ones go first.
What the bar does not do
This is the part that turns a compliance problem into a structural one.
The bar removes your ability to file. It does not remove the liability.
The tax remains due. Interest under Section 50 continues to accrue on it. The department retains its assessment and recovery machinery — demand proceedings, best-judgement assessment for non-filers, recovery, and cancellation of registration.
So a taxpayer with barred periods is left in the worst available position: owing an amount, unable to declare it through the ordinary return, and exposed to proceedings for exactly that non-declaration. Filing late with a capped late fee is, by comparison, a good outcome.
The unbarring facility — and why it is not a plan
GSTN has provided an application through which a taxpayer can seek unbarring of blocked returns, allowing the return to be filed after administrative approval.
Treat this as a remedy of last resort. It requires approval rather than being available as of right, it introduces delay and uncertainty, and it exists to deal with genuine hardship cases — not as a routine extension for taxpayers who chose to wait. Relying on it as a reason to defer filing inverts what it is for.
What to do now
- List every pending return by GSTIN and period — GSTR-1, GSTR-3B and any annual return.
- Compute the bar date for each: due date plus three years. Sort by that date, not by period.
- File in bar-date order, dealing with whatever is closest to falling away first, rather than chronologically from the oldest.
- Quantify before filing. Late fee under Section 47 is capped by turnover — ₹500 for nil returns, ₹2,000 up to ₹1.5 crore, ₹5,000 up to ₹5 crore, ₹10,000 above — so the exposure on old nil or small periods is often far less than feared. Interest at 18% on actual tax is usually the larger number.
- Check whether the amnesty applies. Section 128A provides a conditional waiver of interest and penalty for FY 2017-18 to 2019-20 on specified conditions. Where your pending periods fall in that window, it should be evaluated before anything is paid.
- Deal with the sequence. GSTR-3B cannot be filed for a period until earlier ones are cleared, so a long backlog has to be worked forward in order — which takes time you may not have if a bar date is near.
That last point is the operational trap. Someone discovering in month eleven that a return bars in month twelve may find they cannot get there, because six earlier returns have to be filed first.
Where this sits alongside the rest
Non-filing rarely arrives alone. The same backlog usually brings e-way bill blocking, registration cancellation proceedings in REG-17, and input tax credit already lost because reconciliation never happened — credit for a year cannot be claimed after 30 November of the following year in any event, so old periods have usually forfeited it regardless of the return position.
The wider picture — thresholds, the monthly calendar, ITC conditions and annual returns — is on the GST registration and return filing page.
This note describes the general position on the three-year restriction as it currently operates. Whether a particular period is barred, and what relief may be available, depends on the specific due dates and facts and should be confirmed against them before action is taken.