What is GSTR1, How to File GSTR-1 Return online/offline?

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gst return
(Last Updated On: January 25, 2018)

Question : What is GSTR1 and How to file GSTR-1 Return Online/Offline on GST Portal?

The GSTR1 is a document that every regular taxpayer needs to file every month.
It must contain the details of all sales and supply of goods and services made by the tax payer during the month.

The return contains details of all outward supplies made during the month.
The due date for GSTR-1 is usually 10th of next month.

GSTR-1 have been specified, based on the turnover. While businesses with turnover up to INR 1.5 crore will file quarterly returns, Rest the businesses with turnover of above INR 1.5 crore have to file monthly returns, GSTR 1 needs to be filed by every taxpayer except Composition Scheme Tax Payers, Non-Resident Foreign Tax PayersE-Commerce Operators and Input Service Distributors as there are separate returns for them.

1. Terms used  :

  • GSTIN : Goods and Services Taxable Person Identification Number
  • UIN : Unique Identity Number for embassies
  • HSN : Harmonized System of Nomenclature for goods
  • SAC : Service Accounting Code
  • POS : Place of Supply (State Code) of goods or services
  • B to B : From one registered person to another registered person
  • B to C : From registered person to unregistered person

2. Prerequisites for filing the GSTR-1 :

  • Taxpayer must be registered  under the GST with the 15-digit PAN-based GSTIN.
  • Taxpayer need to keep detailed invoices with unique serial numbers for all the transactions, including business-to-business as well as retail business to consumer sales, and inter-state as well as intra-state transactions also.
  • This also includes transactions associated with exempted and non-GST supplies, and stock transfers between your business locations in different states.
  • Taxpayer either need an OTP from registered phone number to verify the return using an EVC (electronic verification code) or a digital signature certificate (of class 2 or higher).
  • You can also file your GST returns using an Aadhar based e-sign.

How the Taxpayer file a GSTR-1 Form?

GSTR-1 Form contains some steps in which the outward supplies details needs to be filled.

step 1: GSTIN : Goods and Services Taxable Person Identification Number.

Step  2: Name of the Taxable Person.

Step  3: Aggregate Turnover of the Taxable Person in preceding year (To be submitted only in first year.)

Step  4: Taxable outward supplies to a registered Taxpayers (including UIN- holders) other than Zero rated supplies and Deemed Exports.

Step  5: Taxable outward supplies to a consumer where Place of Supply (State Code) is other than the State where supplier is located (Inter-state supplies) and Invoice value is more than Rs 2.5 lakh.

Step  6: Details of Zero rate supplies and Deemed Exports.

Step  7: Details of Taxable outward supplies (Net of debit notes and credit notes)to unregistered persons other than the supplies covered in step 5.

Step  8: Details of debit /credit notes, refund vouchers issued during current period and any amendments to taxable outward supply details furnished in the GSTR1 returns for earlier tax periods in step 4, 5 & 6.

Step 9: Details of debit note and credit note issued to unregistered person.   i).Amendment to Details of Credit/Debit Notes of earlier tax periods ii).Nil rated, exempted and non GST outward supplies.

Step  10: Details of Advances Received/Advance adjusted in the current tax  period or Amendments of information furnished in earlier tax period.

Step   11: HSN-wise summary of outward supplies.

step   12: Documents issued during the tax period.

Step  13: Invoices issued during the tax period including invoices issued in case of   inward supplies received from unregistered persons liable for reverse  charge.

Click here to download GSTR-1 form


Some of the Common Mistakes done by the taxpayers while filing GSTR-1:

i) Mentioning the incorrect GSTIN.
ii). Mentioning the incorrect HSN codes.
iii). Charging the incorrect rates of tax treating a sale as an intra-state sale instead of inter-state sale or vice versa.

Apart from the above, the situations may arise that the shipping adresss of the customer can change.

How to add Invoice Details in GSTR-1 GST Return?

  1. GSTR1 – Invoice Details :  4A, 4B, 4C, 6B, 6C -B2B Invoices: (Business-to-Business) invoices are issued against supplies made from one registered person to registered person to another registered person. The invoice-level data of all B2B supplies made in the given tax period needs to be uploaded in GSTR-1 for successful filling of tac Return.
  • 4A. Under this head invoice wise details of all supplies made other than those under reverse charge and supplies made through e-commerce operator should be mentioned in this section.
  • 4B. All outward supplies on which reverse charge is applicable and which has been excluded in 4A should be shown here
  • 4C. Supplies made through e-commerce operator which attract TCS has to be reported here. The details have to be – rate wise or operation wise.

2.  5A, 5B – B2C (Large) Invoices: To add an invoice for taxable outwards supplies to a consumer, where place of supply is other than the State where supplier is located (Inter-state supplies) and invoice value is more than Rs. 2.5 lakh.

3. 9B – Credit / Debit Notes (Registered): To add details of credit or debit notes issued to the registered recipients.

4. 9B – Credit / Debit Notes (UnRegistered): To add details of credit , debit notes or refund voucher  issued to the unregistered recipients.

 5. 6A – Exports Invoices: To add an invoice for supplies exported.

How we can add details for the outward supplies in the GSTR1?

Following steps are:
  1. Click on the  www.gst.gov.in  and then the GST Home page is displayed.
  2. Login to the GST Portal with valid credentials i.e. your user id and password.
  3. Go to Services. In the drop-down click on Returns > Returns Dashboard
  4. This will take you to the Return filing page. From the drop down select the financial year and the month for which you want to file the return. Click on Search
  5. There are 2 options that a return filer has here – Prepare the GSTR1 return online or offline. Let us take a look at the process of preparing the GSTR1 return online first.  click the PREPARE ONLINE button if you want to prepare the return by making entries on the GST Portal
    1. The PREPARE ONLINE button take you to Details of outward supplies of goods or services.
    2.  Aggregate Turnover of previous Financial Year. For the returns of July 2017 to March 2017.
    3.  Aggregate Turnover for April 2017 to June 2017.
  6. Now,Here is the summary of all the Tables where details of outward supplies need to be entered.


GSTR 1 return is the comprehensive return where the detailed information is required to be furnished.You can get comprehensive assistance on GST Registration and GST Return Filing online.The Proper invoicing and documentation would be key the  feature to finalized the correct information in such return.

Next : Step by Step Guidelines for GSTR-1 Return online on GST Portal


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