September 4, 2023
Shaik Musrath

Business Finances-GST Compliance Calendar for September 2023

As a responsible business owner or taxpayer in India, staying compliant with the Goods and Services Tax (GST) is not just a legal obligation but also a way to ensure smooth operations. The Indian GST system is known for its regular updates and revisions. To help you navigate through the changes and stay compliant, we present the GST compliance calendar for September 2023. Let's take a closer look at the important dates and actions you need to take this month.

September 10, 2023: GSTR-1 Filing Deadline

GSTR-1 is a monthly or quarterly return that contains details of outward supplies made by registered persons. If your business has a turnover of more than Rs. 1.5 crore, you must file GSTR-1 on a monthly basis. Businesses with a turnover of up to Rs. 1.5 crore have the option to file quarterly. Ensure that you report all your sales transactions accurately to avoid penalties.

September 15, 2023: GSTR-3B Filing Deadline

GSTR-3B is a summary return that outlines your tax liability for a particular tax period. This return is crucial for offsetting your tax liability with the input tax credit. Make sure to file GSTR-3B by the 15th of September, and don't forget to reconcile it with your GSTR-1 to avoid any discrepancies.

September 20, 2023: Payment of Tax

By this date, you need to make the tax payment for the previous month. Ensure that you calculate the tax liability correctly and submit the payment on time to avoid interest and penalties.

September 30, 2023: Quarterly Return (Composition Scheme)

If your business is registered under the Composition Scheme, you should file the quarterly return in Form GST CMP-08 by September 30th. This return contains details of the self-assessed tax payable by composition taxpayers.

GST Audits and Reconciliation

Consider conducting regular internal audits to ensure that your financial records align with your GST returns. This can help you identify and rectify any discrepancies before they become compliance issues.


Staying GST compliant is essential for the smooth functioning of your business and to avoid any legal complications. The GST compliance calendar for September 2023 outlined above will help you keep track of important dates and tasks for this month. Remember that staying informed and proactive is the key to successful GST management. By adhering to these deadlines and maintaining accurate records, you can ensure that your business remains on the right side of the law and financially sound.


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