GST return filing due dates explained

Every GST-registered business must file periodic returns reporting its outward supplies, input tax credit and tax liability. The two core returns are GSTR-1 (details of outward supplies / sales invoices) and GSTR-3B (a summary return with tax payment). Each return has a fixed statutory due date, and the GST due date you need depends on your filing frequency — monthly or quarterly under the QRMP scheme.

This GST return due date checker lets you pick a return type and tax period to find its exact filing deadline, so you never miss a GSTR-1 or GSTR-3B due date. Remember that the government can extend specific deadlines through notifications, so always confirm on the GST portal.

Monthly vs QRMP (quarterly) filing

Taxpayers with annual turnover above ₹5 crore must file monthly: GSTR-1 by the 11th and GSTR-3B by the 20th of the following month. Taxpayers with turnover up to ₹5 crore can opt for the Quarterly Return Monthly Payment (QRMP) scheme — filing GSTR-1 and GSTR-3B quarterly while paying tax every month via a PMT-06 challan. Under QRMP, GSTR-1 is due on the 13th and GSTR-3B on the 22nd or 24th of the month after the quarter, depending on the state group.

Late filing fees & interest

Filing a GST return after its due date attracts a late fee of ₹50 per day (₹20 per day for nil returns), split between CGST and SGST, subject to caps. In addition, interest at 18% per annum is charged on any unpaid tax from the due date until payment. Filing on time also protects your customers’ input tax credit and keeps your compliance rating healthy.

For CA firms

CA firms managing multiple GSTINs can use this due date checker alongside the Hidesc compliance calendar to plan filing schedules, assign returns to team members and avoid late fees across all their clients. Hidesc centralises GST, TDS and income tax deadlines so nothing slips through.

Key GST return due dates