Time Limit for Amendment in GSTR 1
- 10 Mar 25
- 11 mins

Time Limit for Amendment in GSTR 1

Key Takeaways
- GSTR-1 amendments are allowed until November 30th of the following year.
- Edit GSTR-1 via the GST portal under ‘Amendment of GSTR-1’.
- Certain details like GSTIN, RCM, and accepted invoices cannot be changed.
- Amendments impact ITC claims, tax liabilities, and may lead to penalties.
- GSTR-1A (from July 2024) helps correct mismatches before filing GSTR-3B.
Businesses frequently notice discrepancies after filing GST returns. This can include improper details in B2B invoices, mismatched exempted sales, inappropriate listings of nil-rated supplies and so on.
To rectify the mistakes mentioned above, the GST platform gives an option to change the reported information during certain situations. However, such a procedure requires a vivid understanding of the rules, especially those related to the nature of allowed amendments.
This blog will inform you about how to amend GSTR-1 after filing and also discuss the time limit for amendment in GSTR-1 as per the latest tax regulations.
What is GSTR-1?

Every GST-registered taxpayer must file a GSTR-1 return either monthly or quarterly. Only a few taxpayers come under the exception category. This document sums up all outward supplies or sales.
Altogether, the GSTR-1 has 13 sections like:
Table Number | Information or Data to be Provided |
1, 2 & 3 | GSTIN of the taxpayer, their legal and trade names along with aggregate turnover of the earlier tax period |
4 | List of taxable supplies made to registered persons (those who have UIN) eliminating deemed exports and zero-rated supplies |
5 | Outward inter-state supplies made to unregistered persons that incur tax. Here, the invoice value should exceed ₹2.5 lakh. |
6 | Deemed exports along with zero-rated supplies |
7 | Taxable supplies other than those covered under Table 5 made to unregistered persons (total value of debit notes and credit notes) |
8 | Non-GST, nil-rated and exempted outward supplies |
9 | Changes to outward supplies that attract tax and are mentioned in Tables 6, 5 and 4 of the preceding tax cycle’s GST return. Also, these amendments are reflected in corresponding refund vouchers produced at present, credit notes and debit notes. |
10 | Credit and debit notes addressing an unregistered person |
11 | Information regarding advances collected or adjusted during the current tax period or changes of data highlighted in the previous tax period |
12 | Outward supplies summary according to HSN codes |
13 | Documents issued during the concerned tax period |
14 | Meant for suppliers - This section is utilised to mention ECO operators’ GSTIN-wise business via e-commerce platforms. In this case, e-commerce businesses should charge TCS u/s 52 or they must settle tax under Section 9(5) of the Central Goods and Services Tax (CGST). |
14A | Again this table is for suppliers and it includes amendments made to Table 14 |
15 | The Table 15 is for e-commerce operators. It reports both B2C and B2B transactions as well as GSTIN-wise sales records of the suppliers against which e-commerce platforms should submit TCS under Section 9(5) of the CGST Act. |
15A | For e-commerce platform operators -Table 15A I - |
How to Select Return Filing Period in GSTR-1 Amendment?
Taxpayers should select a return filing timeframe based on the period in which the GSTR-1 amendment is made. For instance, if an amendment is executed during the month of August then the return period has to be:
- August, if the concerned person makes monthly tax payments
- September, in case the taxpayer files quarterly returns (in this scenario for the period between July-September)
Time Limit for Amendment in GSTR-1
To make changes to the details provided in the GSTR-1 annual return form, a taxpayer has until November 30th of the following year. After this cutoff date, no person will be allowed to bring any corrections or omissions to the GSTR-1 invoices.
This extension in the time limit is offered to ensure completeness and accuracy in GSTR-1 submissions within a feasible period. Adhering to this rule can help your business avoid possible penalties or legal challenges.
How to Amend GSTR-1 After Filing?
To amend a GSTR-1 return directly on the official GST portal, consider following the steps given here:
Step 1: Log in to your GST account by entering the valid credentials.
Step 2: Go to the 'Services' tab and select the 'Returns' option. Following this, select the 'Returns Dashboard' option.
Step 3: Pick the relevant financial year and tax period to proceed further.
Step 4: Select the option marked as ‘Amendment of GSTR-1’.
Step 5: Next, you are redirected to a fresh page where you can edit the required fields to bring the necessary changes.
Step 6: After completing the amendment, click on ‘Preview’. It will enable you to check the updated details.
Step 7: Once you are satisfied with the changes, click on ‘Submit’ to re-file the amended GSTR-1 return form.
List of Details Which Cannot be Amended/Changed in GSTR-1 at Invoice Level
Below are some of the details which a compulsory taxpayer cannot change at the invoice level:
- Changing a tax invoice into a bill of supply
- Changing specific details like the ‘Customer’ or ‘Place of Supply’ in credit and debit notes
- GSTIN of any customer
- Applicability of the reverse charge mechanism (RCM)Â
- Category of export (‘with’ or ‘without’ payment)
- Already modified or accepted invoices - when the intended recipient has already taken action, then that invoice cannot be amended by the taxpayer
List of Details Which Cannot be Amended/Changed in GSTR-1 at Summary Level
A registered taxpayer cannot amend the following invoice details in the GST return form at the Summary level:
- Summary of nil-rated commodities and services cannot be changed
- ‘Place of Supply’ in some conditions cannot be amended in an invoice under GST
- HSN codes of outward supplies cannot be changed by a voluntary taxpayer
File GSTR-1A for GSTR-1 Amendments (Alternate Process)

From July 2024, taxpayers can file GSTR-1A, another new form to report mismatches in the already filed GSTR-1. This new format was introduced by the GST Council to help growing businesses.Â
After this new proposition, taxpayers can now easily maintain correct invoice details in the GSTR-3B return. This, in turn, facilitates accurate return calculation over a given period.
However, remember that GSTR-1A is an optional solution. You need to avail this form if only you need to revise the submitted GSTR-1. It does not stipulate any compliance needs and at the same time offers a quick option to change the information provided.
It is essential to file GSTR-1A before working on GSTR-3B for the said tax period.
Limitation of GSTR-1A
A GSTR-1A return enables the respective taxpayer to change the information provided in GSTR-1 for the current tax period only.
Where to Place the Amended Invoices in GSTR-1 Return?
A taxpayer must state the respective details or invoices in which amendments took place during a certain period in the following manner:
Sl. No. | Type of Amendment | Details |
1 | Changes made in B2B transactions (9A) | Changes done in the GST-compliant invoices previously are reported in this section. Here, one can refer to taxable supplies made to SEZ/ SEZ developers either including or excluding the payment of deemed exports and taxes. |
2 | Large B2C amendments (9A) | Changes issued in the original invoices need to be specified here. They give an idea of original invoices generated for interstate sales made to unregistered persons. However, the invoice value should be a minimum of ₹2.5 lakh. |
3 | Credit/Debit notes amendments under 9C | This has a credit or debit note modified against an earlier issued credit/debit note made for B2B sales. |
4 | Credit/Debit notes amendments under 9C - for unregistered persons | Again, this displays credit or debit notes issued against a previously issued note under the Export Invoices section or B2C large section. |
5 | Export Invoices Amendments (9A) | Changed invoices produced against previously generated original invoices should be reflected here. If you are exporting supplies under a Letter of Undertaking or Bond, then export invoices must specify Export under bond/ LUT. Otherwise, it will be Export with IGST if you pay IGST and export without a formal letter of supply. |
6 | B2C Others Amendments (10) | Changes done to the already-issued invoices show up here. This section has invoices that do not come under B2B, B2C large and exports segments. |
7 | Changes in advances received (11(2)) | Here, you can see changes made to the advance payouts of tax liability during any earlier tax period. |
8 | Adjustment to advances amendments (11(2)) | All the amendments done to the advances paid in preceding tax periods need to be specified here. |
9 | Amendment to transactions via an e-commerce operator under Section 52 and 9(5) of the CGST Act reflected by the suppliers | This is where you report any changes to previous e-commerce sales tax periods. |
10 | Change to transactions via e-commerce operator under Section 9(5) of the CGST Act reflected by the suppliers | Amendments to prior tax periods' sales under Section 9(5) must be reported here. |
Impact of GSTR-1 Amendments on Your GST Returns
To simply put, when we do amendments we bring changes to an already submitted or filed document. Here, we are talking about bringing changes to an already uploaded GSTR-1 form.
Following are a few notable implications of amending the GSTR-1 form online:
- ITC Adjustments
For B2B supplies, any change that a taxpayer makes in the invoice like the applicable tax rate, total tax amount, etc., will directly impact the consumer’s ITC claims.
- Impact on Tax Liability
When an amendment takes place because of underreporting of sales, it directly alters the tax liability. Besides the extra tax amount, the concerned person becomes liable to furnish additional fines and interest on the correct tax liability.
- Legal Challenges
If the GST Council notices a particular person performing amendments frequently, they can initiate legal proceedings or perform an audit for such entities.
Conclusion
As businesses prepare to jump from one financial year to another, it is important to be aware of the time limit for amendment in GSTR-1. Modifications can become absolutely necessary especially when new rates are introduced under the GST law or severe penalties are imposed due to non-adherence to norms.
Therefore, you can keep this guide handy for easily amending GSTR-1 details for accurate calculation of tax liability. Businesses should also proactively arrange for continuous employee training on new GST regulations. If such arrangements seem overwhelming, you can work closely with GST experts to ensure your business always complies with GST payments.
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