Section 37 of CGST Act - Furnishing Details of Outward Supplies
Section 37 governs the electronic furnishing of outward supply details by registered persons. In practice, these details are generally furnished in Form GSTR-1 under Rule 59 of the CGST Rules. The provision also deals with correction of errors, restrictions for pending earlier periods and the statutory three-year filing limit.
Updated: 15 September 2026
What Section 37 means
Section 37 - Updated statutory position
Section 37(1): Furnishing outward supply details
Every registered person, other than an Input Service Distributor, a non-resident taxable person and a person paying tax under Section 10, Section 51 or Section 52, is required to furnish electronically, subject to prescribed conditions and restrictions and in the prescribed form and manner, details of outward supplies made during a tax period.
The statutory provision refers to furnishing the details on or before the tenth day of the succeeding month. The operational due dates for Form GSTR-1 are prescribed under the CGST Rules: ordinarily the 11th day of the succeeding month for monthly filers and the 13th day of the month succeeding the quarter for eligible quarterly filers, subject to extensions notified by the Government.
The details are communicated to recipients subject to prescribed conditions, restrictions, time and manner. The Commissioner may extend the time limit for specified classes of taxable persons by notification, for reasons recorded in writing.
Section 37(2): Omitted
Sub-section (2), which earlier dealt with acceptance or rejection of communicated inward supply details, has been omitted with effect from 1 October 2022.
Section 37(3): Rectification of errors or omissions
A registered person who has furnished outward supply details for a tax period may, upon discovering an error or omission, rectify it in the prescribed manner. Where the error or omission results in short payment of tax, the tax and applicable interest must also be paid.
No rectification of an error or omission in the details furnished under Section 37(1) is permitted after 30 November following the end of the financial year to which the details relate, or after furnishing the relevant annual return, whichever is earlier.
Section 37(4): Earlier tax periods must generally be furnished first
A registered person is not allowed to furnish outward supply details for a tax period if the details for any previous tax period have not been furnished. The Government may, on the recommendations of the GST Council and by notification, permit specified persons or classes of persons to furnish such details subject to stated conditions and restrictions.
Section 37(5): Three-year time limit
A registered person is not allowed to furnish the details of outward supplies under Section 37(1) for a tax period after three years from the due date for furnishing those details. The Government may, on the recommendations of the GST Council, permit specified persons or classes of persons to furnish them after that period, subject to notified conditions and restrictions.
Explanation: Meaning of "details of outward supplies"
For Chapter IX, the expression includes details of invoices, debit notes, credit notes and revised invoices issued in relation to outward supplies made during a tax period.
Form GSTR-1 and Rule 59
Rule 59 of the CGST Rules provides the form and manner for furnishing outward supply details. Form GSTR-1 is the statement used by regular taxpayers for reporting prescribed outward supply information. It includes invoice-level and consolidated information depending on the nature of the supply, along with credit/debit notes, exports, amendments and other prescribed particulars.
| Item | Current practical position |
|---|---|
| Monthly GSTR-1 | Generally due on the 11th day of the succeeding month, unless extended. |
| Quarterly GSTR-1 | Generally due on the 13th day of the month succeeding the quarter for eligible quarterly filers, unless extended. |
| Previous financial year corrections | Generally cannot be made after 30 November following that financial year, or furnishing the relevant annual return, whichever is earlier. |
| Previous period not filed | Section 37(4) restricts filing for a later period where previous outward supply details remain unfurnished, subject to notified relaxation. |
| Old unfiled periods | Section 37(5) imposes a three-year limit from the due date, subject to notified relaxation. |
GSTR-1A: same-period amendment facility
The GST Portal provides Form GSTR-1A as an optional same-period amendment facility. A taxpayer may use it to amend records furnished in GSTR-1 or add records omitted from GSTR-1 for the same tax period. It becomes available after filing GSTR-1 or after the GSTR-1 due date, whichever is later, and may be filed before GSTR-3B for that tax period. It can be filed only once for a tax period.
Related CGST Act provisions
Section 37 should be read with the return framework in Chapter IX, particularly Section 38 - Communication of details of inward supplies and input tax credit, Section 39 - Furnishing of returns, Section 46 - Notice to return defaulters, and Section 47 - Levy of late fee.
Practical compliance points
Taxpayers should reconcile sales records, tax invoices, debit and credit notes, e-commerce supplies, exports and amendments before filing GSTR-1. Errors should be corrected promptly rather than being left until the statutory cut-off. The filing status of earlier tax periods should also be checked before attempting to furnish the statement for a later period.
Frequently asked questions
Who normally files GSTR-1?
Regular registered taxpayers making outward supplies generally furnish Form GSTR-1. The exclusions and special categories are governed by Section 37 and the CGST Rules.
What is the normal monthly due date for GSTR-1?
The normal due date is the 11th day of the succeeding month for monthly filers, subject to any extension notified by the Government.
What is the rectification deadline for a previous financial year?
Section 37(3) bars rectification after 30 November following the end of that financial year or furnishing of the relevant annual return, whichever is earlier.
Can a very old GSTR-1 be filed at any time?
No. Section 37(5) provides a three-year limit from the due date for furnishing the outward supply details, subject to any relaxation notified by the Government on the recommendations of the GST Council.