Monthly Filer Due Dates

The default cadence for most registered businesses

Any taxpayer with aggregate turnover above ₹5 crore, or below that threshold but not opted into QRMP, files under the standard monthly cadence: GSTR-1 by the 11th of the following month, then GSTR-3B by the 20th. The nine-day gap between the two is deliberate — it gives GSTR-1's invoice data time to flow through into GSTR-2B and inform GSTR-3B's auto-populated figures before the summary return is due.

Unlike QRMP, monthly filing has no state-based variation at all — every regular monthly filer nationwide faces the same 11th and 20th deadlines, regardless of which state the registration is in.

When monthly filing makes more sense than QRMP

Even businesses under the ₹5 crore QRMP eligibility threshold sometimes choose to stay on monthly filing — high-volume B2B suppliers whose customers need every invoice reflected in GSTR-2B as quickly as possible, or businesses that simply prefer the discipline of a monthly reconciliation cycle rather than batching three months of activity into one quarterly filing. QRMP's optional IFF narrows this gap for B2B invoices specifically, but monthly filing still gives full GSTR-1 visibility every month, not just for the two IFF-eligible months of a quarter.