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Home > GST > Help Center > GSTR 1 ExplainedLast Updated: Dec 28th 2023

GSTR 1 Explained

GSTR-1 for Outward Supplies / Invoices - Explained in detail. EZGST from EZTax.in makes it easier to file Form GSTR-1



GSTR 1 Explained

This document covers

  1. Key Components
  2. Who is not required to file?
  3. Due Dates
  4. Contents of GSTR 1
  5. HSN Code requirement
  6. Quick GSTR 1 FAQs

1. Key Components of GSTR-1 Return

Every registered person other than the persons prescribed should furnish the details of outward supplies of goods or services or both in form GSTR 1. GSTR 1 should be furnished electronically through a common portal either directly or through a facilitation centre notified by the commissioner.

2. Persons not required to file GSTR 1

Every registered person other than the following persons should file GSTR 1. The following are not required to file GSTR 1

  • Input Service Distributor.
  • Non-resident taxable person.
  • Tax Payers paying tax under Composition levy.
  • Tax payers who are required to deduct tax at source (TDS).
  • Tax Payers who are required to collect tax at source (TCS) i.e., e commerce operator.
  • Persons providing online information and Data Access & Retrieval services to a non-taxable online recipient.
  • Persons providing online information and Data Access & Retrieval services to a non-taxable online recipient. (OIDAR)

3. Due Date for submission of GSTR 1

The Government of India has provided the option of filing returns on quarterly basis to registered persons having turnover less than or equal to Rs 5 crores during the preceding financial year.


Tax Payers with turnover up to Rs 5 crores

The registered tax payers whose turnover is up to Rs 5 crores in the preceding financial year or the current financial year has to file GSTR 1 on quarterly basis.

The due dates are as follows:

  • April to June – 13th July
  • July to September - 13th October
  • October to December – 13th January
  • January to March – 13th April

Tax Payers with turnover more than Rs 5 crores

The registered tax payers whose turnover is more than Rs 5 crores in the preceding financial year or the current financial year has to file GSTR 1 on monthly basis. GSTR 1 is required to be filed on or before 11th day of month succeeding such month. But the Government of India has extended the due dates for few months as follows:

MonthDue Date
April11st May
May11th June
June11th July
July11th August
August11th September
September11th October
October11th November
November11th December
December11th January
January11th February
February11th March
March11th April

4. Contents of GSTR 1

The supplier has to furnish the details of invoices, debit notes, credit notes and revised invoices issued in relation to outward supplies made during the tax period. Key points to be disclosed are as follows

  • Supplies made to registered persons (B2B invoices)
  • Inter State supplies to unregistered persons where invoice value is more than Rs 2.5 lakhs (B2CL invoices).
  • Zero rated supplies and deemed exports
  • Consolidated supplies of inter state supplies and intra state supplies (B2CS invoices)
  • Consolidated values of interstate and intra state Nil rated supplies, Exempted and Non-GST supplies.
  • Details of Credit notes/ Debit notes /Amendments to the invoices issued
  • Details of HSN wise summary of outward supplies
  • Documents issued during the current period.

5. HSN Code requirement in GSTR 1

HSN summary wise details should be furnished in GSTR 1. The Government of India has mandated the HSN Code requirement as follows

Before April 2021HSN Requirement
Aggregate Turnover is < 1.5 crores
  • HSN /SAC is not mandatory for the taxable persons whose turnover is less than Rs 1.5 crore
  • For exports 8-digit HSN is mandatory
  • Aggregate Turnover is 1.5 to 5 crores
  • 2-digit HSN /SAC code is mandatory
  • For exports 8-digit HSN /SAC is mandatory
  • Aggregate Turnover is > 5 crores
  • 4-digit HSN /SAC code is mandatory
  • For exports 8-digit HSN /SAC is mandatory


  • Turnover during the preceding financial yearNumber of Digits of HSN Code
    Up to Rs 5 Crores
  • 4 digits HSN/SAC is mandatory for B2B invoices
  • Optional for B2CS invoices
  • More than Rs 5 Crores 6 digit HSN/SAC Code is mandatory for B2B and B2CS invoices

    6. Quick GSTR 1 FAQs

    1.Is GSTR 1 filing mandatory?

    GSTR 1 needs to be filed even if there is no business activity in the tax period.

    2.What happens if there is delay in filing GSTR 1 ?
    • If the registered tax person having invoices does not file the GSTR 1 within due date, he is liable to pay late fee of Rs 50 per day (CGST act -Rs 25, SGST act – Rs 25).
    • If the registered tax person have no invoices during the tax period does not file GSTR 1 within due date, he is liable to pay late fee of Rs 20 per day (CGST act -Rs 10, SGST act – Rs 10).
    3.Whether the details uploaded by the supplier in GSTR-1 would be communicated to the receiver ?

    Yes, the details uploaded by the supplier in GSTR-1 would be communicated to the recipient in Part A of FORM GSTR-2A, which is an auto-drafted form on real time basis.

    4.Is shipping bill mandatory while declaring export invoices in GSTR 1 ?

    No, the tax payer can furnish the details of export invoices in GSTR 1 and file the return without mentioning the shipping bill number and date if shipping bill details are not readily available.

    5.What are the available modes of preparing GSTR 1 ?

    GSTR-1 can be prepared using the following modes through:

    1. Online entry on the GST Portal.
    2. Uploading of invoice and other GSTR-1 data using Returns Offline Tool.
    3. Using third party application of Application Software Provider (ASPs) through GST Suvidha Providers (GSPs).

    6.Whether the details furnished under Form GSTR-1 can be rectified ?

    GSTR 1 once filed cannot be revised. However, the details furnished in Form GSTR-1 which have remained can be rectified as and when the error or omission is discovered. Error in outward Supply filings can be corrected by amendments in Table 9 and 10 of GSTR1.

    7.What is the time limit for rectifying the details furnished in GSTR 1 ?

    The due date within which tax payer can rectify the errors or omission in respect of details furnished in GSTR 1shall be earlier of following

    • Due date of filing Annual return (or)
    • Date of filing of GSTR 1 for the month of October following the end of financial year.

    8.What are the pre-requisites for filing GSTR 1 ?

    The pre-requisites for filing GSTR 1 are as follows

    • The tax payer should be a registered tax payer having active GSTIN during the tax period.
    • The tax payer should have valid login credentials.
    • The tax payer should have active DSC / access to registered mobile number.

    Get to know more  GSTR-1 Filing Price

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