Due Date for GSTR-3B Filing
GSTZone Desk · Updated 2026
Short answer
For regular monthly filers, GSTR-3B is due by the 20th of the following month. Under the QRMP scheme, it’s staggered to the 22nd or 24th of the month after the quarter, depending on which state category you’re in.
In detail
A normal registered taxpayer filing monthly has one consistent date to remember: the 20th of the month following the tax period. February’s return is due 20 March, and so on, every month.
Businesses on the QRMP scheme (turnover up to ₹5 crore, filing quarterly) get a different, staggered due date based on their state — 22nd of the month after the quarter for ‘Category X’ states, or 24th for ‘Category Y’ states. This staggering was deliberately built in to spread the portal’s filing load rather than everyone hitting the system on the same day.
QRMP filers still have a monthly obligation in between, though — a PMT-06 challan payment (using either the fixed sum method or self-assessment) is due by the 25th of the first two months of each quarter, even though the actual GSTR-3B return for those two months isn’t filed until the quarter ends.
GSTZone tip
If you’re on QRMP, don’t lose track of the monthly PMT-06 payment just because the return itself isn’t due monthly — missing that interim payment attracts interest even though no return was due that month.
Related questions
Which states fall in Category X vs Category Y?+
Category X broadly covers states in the western, southern and a few union territories with the 22nd due date; Category Y covers the remaining states and union territories with the 24th due date — the exact list is notified and worth confirming on the portal for your specific state.
Does the due date change if it falls on a public holiday?+
The GST portal occasionally extends due dates that fall on holidays or during system outages, but this isn’t automatic — check for a specific notification rather than assuming an extension.
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