Deadline finder

Which deadlines apply to me?

Three questions, and the list below narrows to what is actually yours.

1 Which year, and in which sense?

Deadlines FOR a financial year Deadlines IN a calendar year

Calendar year the deadline falls in

2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031
2 I am …

An individual A freelancer A startup / SMB An enterprise
3 How are you set up for GST?

How are you set up for GST?
GST registered Monthly GST returns Inter-state supplies

Your deadlines falling in 2027

January 2027

Due on	Filing	Period	Filed by	Deadline
January 11, 2027	GSTR-1	December 2026	yourself or an advisor	in 76 days
January 20, 2027	GSTR-3B	December 2026	yourself or an advisor	in 85 days

February 2027

Due on	Filing	Period	Filed by	Deadline
February 11, 2027	GSTR-1	January 2027	yourself or an advisor	in 107 days
February 22, 2027	GSTR-3B	January 2027	yourself or an advisor	in 118 days

March 2027

Due on	Filing	Period	Filed by	Deadline
March 11, 2027	GSTR-1	February 2027	yourself or an advisor	in 135 days
March 22, 2027	GSTR-3B	February 2027	yourself or an advisor	in 146 days

April 2027

Due on	Filing	Period	Filed by	Deadline
April 12, 2027	GSTR-1	March 2027	yourself or an advisor	in 167 days
April 20, 2027	GSTR-3B	March 2027	yourself or an advisor	in 175 days

May 2027

Due on	Filing	Period	Filed by	Deadline
May 11, 2027	GSTR-1	April 2027	yourself or an advisor	in 196 days
May 20, 2027	GSTR-3B	April 2027	yourself or an advisor	in 205 days

June 2027

Due on	Filing	Period	Filed by	Deadline
June 11, 2027	GSTR-1	May 2027	yourself or an advisor	in 227 days
June 21, 2027	GSTR-3B	May 2027	yourself or an advisor	in 237 days

July 2027

Due on	Filing	Period	Filed by	Deadline
July 12, 2027	GSTR-1	June 2027	yourself or an advisor	in 258 days
July 20, 2027	GSTR-3B	June 2027	yourself or an advisor	in 266 days

August 2027

Due on	Filing	Period	Filed by	Deadline
August 02, 2027	Income Tax Return (non-audit) *	2026-27	filed yourself	in 279 days
August 11, 2027	GSTR-1	July 2027	yourself or an advisor	in 288 days
August 20, 2027	GSTR-3B	July 2027	yourself or an advisor	in 297 days

September 2027

Due on	Filing	Period	Filed by	Deadline
September 13, 2027	GSTR-1	August 2027	yourself or an advisor	in 321 days
September 20, 2027	GSTR-3B	August 2027	yourself or an advisor	in 328 days

October 2027

Due on	Filing	Period	Filed by	Deadline
October 11, 2027	GSTR-1	September 2027	yourself or an advisor	in 349 days
October 20, 2027	GSTR-3B	September 2027	yourself or an advisor	in 358 days

November 2027

Due on	Filing	Period	Filed by	Deadline
November 01, 2027	Income Tax Return (audit cases) *	2026-27	filed by an advisor	in 370 days
November 11, 2027	GSTR-1	October 2027	yourself or an advisor	in 380 days
November 22, 2027	GSTR-3B	October 2027	yourself or an advisor	in 391 days

December 2027

Due on	Filing	Period	Filed by	Deadline
December 13, 2027	GSTR-1	November 2027	yourself or an advisor	in 412 days
December 20, 2027	GSTR-3B	November 2027	yourself or an advisor	in 419 days

About these dates

For these returns the deadline depends on the case. A non-audit return is due 31 July; where a tax audit under s.44AB is required, the return is due later. Every other date in the table is the same either way.
A date falling on a Sunday or a public holiday moves to the next working day (s.10, General Clauses Act).
Where the CBDT extended a date by circular, the original stands beside it, struck through. The info marker names the circular.
State holidays are not taken into account, and the CBDT extends these dates by circular in most years — check the current circular before relying on a date.

This overview is not tax advice. For your own case, please confirm the dates with a chartered accountant or on the Income Tax Department's e-filing portal.

This is not advice. Whether a threshold is crossed depends on your numbers.

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