The Central Board of Indirect Taxes and Customs (CBIC) has extended the due date for filing GSTR-3B returns for the month of March 2026 till April 21, 2026.

The notification, issued under the powers conferred by Section 39(6) of the Central Goods and Services Tax (CGST) Act, 2017, provides that all registered persons required to file returns under Section 39(1), read with Rule 61 of the CGST Rules, will now be allowed additional time to furnish their returns for the said tax period. 

This extension has been granted based on the recommendations of the GST Council, indicating a policy-driven approach to ease compliance pressures on taxpayers. The extension applies uniformly to all eligible registered persons required to file GSTR-3B for March 2026.

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The revised deadline explicitly states that the return “shall be furnished… till the twenty-first day of April, 2026,” thereby providing a short but crucial extension window for businesses and tax professionals to complete their filings. 

The notification clarifies that it shall be deemed effective from April 20, 2026, ensuring legal backing for the extension and avoiding any ambiguity regarding its applicability.

Notification Details

Notification No. 01/2026

Date: 21st April, 2026

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