GSTR-3B monthly due date: 20 Sept 2026
GSTR-3B · Regular taxpayers filing monthly
GSTR-3B is the monthly summary return through which GST is actually paid. It is due on the 20th of the following month for monthly filers, and on the 22nd or 24th after the quarter under QRMP depending on the state.
If you miss it
₹50 per day (₹20 for nil returns), capped by turnover
Interest: 18% per annum on tax paid late
Tax must be paid before GSTR-3B can be filed, so the practical deadline for arranging funds is a few days earlier. Interest at 18% runs from the due date on the net cash liability.
Input tax credit in GSTR-3B should match GSTR-2B after actioning invoices in the Invoice Management System. Claiming credit that is not in 2B is the most common trigger for ASMT-10 notices.
Let us handle this filing
GSTR-1 and GSTR-3B Monthly
Regular taxpayers filing monthly
Before each due date
GSTR-3B monthly: questions
What is the GSTR-3B due date?
The 20th of the next month for monthly filers. QRMP filers in category X states file by the 22nd and category Y states by the 24th of the month after the quarter.
What happens if GSTR-3B is filed late?
Late fee of ₹50 per day (₹20 if nil) plus 18% interest on tax paid late. Continuous non-filing for six months can lead to cancellation of registration.
Can GSTR-3B be revised?
No. Corrections are made in the next period. That is why we share a draft before filing.