GST Compliance Calendar for 2026: Month-by-Month GST Due Dates

Have you ever been in a situation where you have missed or almost missed an important GST return due date? That panic, that rush to log in, we can relate to it. That feeling of "Why didn't I check this before?”

Don’t worry, it’s not just you. Most business owners still struggle with GST return filing deadlines. Now stop and ask yourself, “Suppose you had the list of all GST due dates throughout the year beforehand?” 

That is the reason why the GST compliance calendar of 2026 is incredibly important. In this blog, we will share GST return filing due dates for the whole year of 2026 so that there is no chance of missing GST dates. 

GST Due Dates for January 2026

January sets the tone for the new year. Many businesses are in vacation mode this month, and that's when mistakes happen: 

GST Due Dates for February 2026

February is usually calmer, but the month is shorter comparatively.

This is a good month to reconcile GSTR 2B properly. Do not postpone it to March.

GST Dates for March 2026

March is intense because the financial year-end pressure builds up.

GST Due Dates for April 2026

The new financial year begins. 

GST Dates for May 2026

The rush of the new financial year settles. 

If you plan to change any details in your GST registration, like the composition scheme or anything, this is a good time to review.

GST Return Filing Dates for June 2026

Half-year thinking begins.

You should not ignore reconciliation at this stage. Small mismatches may attract heavy penalties. 

GST Return Filing Dates for July 2026

Traditionally, it has been a heavy compliance month.

July is the month when notices from the previous year start appearing. Be prepared.

GST Due Dates for August 2026

This is the month when you may feel things are under control.

GST Due Dates for September 2026

Important for corrections.

September is often the last chance or last month to correct errors related to the previous financial year. 

GST Due Dates for October 2026

The festive season begins; there should be no compromise on compliance.

Plan properly so that filings do not get compromised in festivities. 

GST Due Dates for November 2026

Short month. High risk of delay.

If you have a large volume of transactions, this is a good time to double-check documentation.

GST Due Dates for December 2026

Year-end again. Time flies.

What’s Next? 

In order to stay up-to-date with all the GST compliance deadlines, we advise you to bookmark this page and keep visiting it on a regular basis to keep them under check. If you are struggling with GST return filing, we encourage you to sign up for Munim GST Return Filing software. The software is designed in such a way that you don’t have to worry about GST filing anymore, since everything is self-explanatory and simplified for a non-professional. 

Frequently Asked Questions on GST Due Dates 

What is the due date for payment of GST?

GST payment is usually due on the 20th of the following month while filing GSTR 3B.​

How to file a GST return after the due date​? 

You can still file a GST return after the due date, just like a normal GST return. However, the only difference is that you will need to pay late fees and interest. 

How to file NIL GST return after the due date​? 

The process of filing a NIL return is the same as the regular return. Late fees may still apply. 

Can a GST return be filed before the due date​? 

Yes, you can file a return any day after the tax period is over. 

What is the deadline for filing GST annual returns​? 

GSTR 9, the annual GST return, is usually due on 31st December except where the government extends it.

How to check GST compliance rating​? 

You can check your GST compliance rating by logging in to the GST portal with your credentials and visiting your taxpayer dashboard.

About the author

Mehul Jagwani

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Mehul is a seasoned content writer with a passion for simplifying complex accounting and GST topics. With a keen interest in entrepreneurship and business management, he specializes in creating informative and engaging content for themunim.com. His goal is to help businesses understand and implement accounting and GST software solutions effectively. When he's not crafting content, Mehul enjoys exploring new places and spending time with his Golden Retriever.