Eldorado Digital Centre

GSTR-3B: the 2026 filing calendar

Every 3B due date for the year, plus what the late fee actually costs you per day.

The late fee on GSTR-3B is ₹50 a day (₹20 for nil returns), capped — but the interest at 18% on the tax due is not capped, and that is where the money actually goes.

Monthly filers: the 20th of the following month. QRMP filers: the 22nd or 24th, depending on your state group.

The practical advice is boring. Set a reminder on the 15th, not the 19th. Reconcile 2B first, then file. Most of the penalties we see at the counter come from people who had the money and simply forgot.
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