Calendar year the deadline falls in
January 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
December 2025
|
Freelancer, Startup / SMB, and Enterprise
|
288 days ago
|
|
|
GSTR-3B
|
December 2025
|
Freelancer, Startup / SMB, and Enterprise
|
280 days ago
|
February 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
January 2026
|
Freelancer, Startup / SMB, and Enterprise
|
258 days ago
|
|
|
GSTR-3B
|
January 2026
|
Freelancer, Startup / SMB, and Enterprise
|
249 days ago
|
March 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
February 2026
|
Freelancer, Startup / SMB, and Enterprise
|
230 days ago
|
|
|
GSTR-3B
|
February 2026
|
Freelancer, Startup / SMB, and Enterprise
|
221 days ago
|
April 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
March 2026
|
Freelancer, Startup / SMB, and Enterprise
|
197 days ago
|
|
|
GSTR-3B
|
March 2026
|
Freelancer, Startup / SMB, and Enterprise
|
190 days ago
|
May 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
April 2026
|
Freelancer, Startup / SMB, and Enterprise
|
169 days ago
|
|
|
GSTR-3B
|
April 2026
|
Freelancer, Startup / SMB, and Enterprise
|
160 days ago
|
June 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
May 2026
|
Freelancer, Startup / SMB, and Enterprise
|
138 days ago
|
|
|
GSTR-3B
|
May 2026
|
Freelancer, Startup / SMB, and Enterprise
|
127 days ago
|
July 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
June 2026
|
Freelancer, Startup / SMB, and Enterprise
|
106 days ago
|
|
|
GSTR-3B
|
June 2026
|
Freelancer, Startup / SMB, and Enterprise
|
99 days ago
|
|
|
Income Tax Return (non-audit)
*
|
2025-26
|
Individual, International, and Freelancer
|
88 days ago
|
August 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
July 2026
|
Freelancer, Startup / SMB, and Enterprise
|
77 days ago
|
|
|
GSTR-3B
|
July 2026
|
Freelancer, Startup / SMB, and Enterprise
|
68 days ago
|
September 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
August 2026
|
Freelancer, Startup / SMB, and Enterprise
|
46 days ago
|
|
|
GSTR-3B
|
August 2026
|
Freelancer, Startup / SMB, and Enterprise
|
36 days ago
|
October 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
September 2026
|
Freelancer, Startup / SMB, and Enterprise
|
15 days ago
|
|
|
GSTR-3B
|
September 2026
|
Freelancer, Startup / SMB, and Enterprise
|
7 days ago
|
November 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
October 2026
|
Freelancer, Startup / SMB, and Enterprise
|
in 15 days
|
|
|
GSTR-3B
|
October 2026
|
Freelancer, Startup / SMB, and Enterprise
|
in 24 days
|
December 2026
| Due on |
Filing |
Period |
Applies to |
Deadline |
|
|
GSTR-1
|
November 2026
|
Freelancer, Startup / SMB, and Enterprise
|
in 45 days
|
|
|
GSTR-3B
|
November 2026
|
Freelancer, Startup / SMB, and Enterprise
|
in 55 days
|
Which deadlines apply to me?
