GSTR-1 is a monthly Statement of Outward Supplies to be furnished by all normal and casual registered taxpayers making outward supplies of goods and services or both and contains details of outward supplies of goods and services.

Every registered taxable person, other than an input service distributor/ composition taxpayer/persons liable to deduct tax u/s 51 / persons liable to collect tax u/s 52 is required to file GSTR-1, the details of outward supplies of goods and/or services during a tax period, electronically on the GST Portal.

Persons liable to furnish the details of outward supply [Section 37(1)]

The details of outward supplies of both goods and services are required to be furnished by every registered person including casual registered person except the following

1. an Input Service Distributor (ISD).
2. a non-resident taxable person, (NRTP)
3. a person paying tax under the provisions of Section 10 i.e. Composition Scheme,
4. a person paying tax under the provisions of Section 51 i.e. person deducting tax at source,
5. a person paying tax under the provisions of Section 52 i.e. person collecting tax at source i.e. e-commerce operator (ECO), not being an agent,
6. a supplier of online information and database access or retrieval services (OIDAR). The above-excluded persons have to file special returns.

Form for submission of details of outward supplies [Section 37(1)]

The details of outward supplies are required to be furnished, electronically, in Form GSTR-1. Such details can be furnished through the common portal, either directly or from a notified Facilitation Centre.

Due date of submission of GSTR-1 – up to 10th of next month [Section 37(1)]

GSTR-1 for a particular month is filed on or before the 10th day of the immediately succeeding month. In other words, GSTR-1 of a month can be filed any time between 1 and 10th day of the succeeding month.

1. Extension of time limit by Commissioner: The due date of filing GSTR-1 may be extended by the Commissioner/ Commissioner of State GST/Commissioner of UTGST for reasons to be recorded in writing, by notification, for a class of taxable persons.
2. Details cannot be furnished from 11th to 15th of succeeding month: The registered person shall not be allowed to furnish the details of outward supplies i.e. GSTR-1 during the period from 11th day to 15th day of the month succeeding the tax period.

Point to be noted: As a measure of easing the compliance requirement for small taxpayers, GSTR-1 has been allowed to be filed quarterly by small taxpayers with aggregate annual turnover up to 1.5crore in the preceding financial year or the current financial year. Taxpayers with annual aggregate turnover above 1.5crore will, however, continue to file GSTR-1 on a monthly basis.

GSTR-1 cannot be furnished before the end of the tax period

A taxpayer cannot file GSTR-1 before the end of the current tax period i.e. to say for the month of November before the 30th of November. However, the following are the exceptions to this rule:

1. Cancellation of GSTIN of a normal taxpayer
2. Casual taxpayers, after the closure of their business.

A taxpayer who has applied for cancellation of registration will be allowed to file GSTR-1 after confirming receipt of the application.

What kind of details of outward supplies are required to be furnished in GSTR-1?

Contents of information in GSTR-1 [Explanation to Section 37 read with Rule 59(2) of CGST Rules 2017]

Basic & Other Details:

1. GSTIN
1. Legal Name & Trade Name
2. Aggregate Turnover in the previous year
3. Tax Period
4. HSN-wise summary of Outward supplies
5. Details of documents issued
6. Advances received/advances adjusted
2. Details of Outward Supplies:
1. B2B
2. B2C
3. Zero-rated & Deemed exports
4. Amendments for the prior period
5. Nil Rated/Exempted/Non-GST
6. Debit/Credit notes issued

Invoice wise & consolidated details

The registered person is required to furnish details of Invoices & revised invoices issued in relation to supplies made by him to registered & unregistered persons during a month in GSTR-1 in the following manner:

1. Invoice-wise details of ALL
1. Inter-state & Intra-state supplies made to registered persons i.e.B2B supplies
2. Inter-state supplies made to unregistered persons with invoice value exceeding Rs.2,50,000 i.e.B2C supplies
2. Consolidated details of ALL
1. Intra-state supplies made to unregistered persons for each rate of tax
2. Inter-state supplies made to unregistered persons with invoice value up to Rs.2,50,000 for each rate of tax separately for each State

Thus, uploading invoices depends on whether the supply is B2B or B2C plus whether the supply is intra-State or inter-State.

B2B means business to business transactions. In such types of transactions, the recipient is also a registered supplier and hence, takes ITC.B2C means business to a consumer transaction. In such types of transactions, the recipient is consumer or unregistered and hence, will not take or cannot take ITC.

1. B2B supplies: For such supplies, all invoices will have to be uploaded irrespective of whether they are intra State or inter-State supplies. This is so because the recipient will take ITC and thus, invoice matching is required to be done.
   
2. B2C supplies: For B2C supplies, uploading, in general, may not be required as the buyer will not be taking ITC. However, still in order to implement the destination based principle, invoices of value more than 2.5lakh in inter-State B2C supplies will have to be uploaded. For inter-state invoices below 2.5lakh, State-wise summary will be sufficient and for all intra-State invoices, only consolidated details will have to be given. Invoices can be uploaded at any time during the tax period and not just at the time of filing.