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Home›Tax Deadlines›December 2026

FY 2026-27 · Tax Calendar

Tax Due Dates — December 2026

December 2026 has three major deadlines: advance tax Q3 instalment on December 15 (75% cumulative), GSTR-9 annual return on December 31, and the belated ITR filing deadline on December 31.

Deadlines This Month

4

tracked filing dates

Full Calendar →

Deadlines in December 2026

Due DateDeadlineTypeStatus

11 December 2026

GSTR-1 (Monthly)GST127 days

15 December 2026

Advance Tax Q3Advance Tax131 days

20 December 2026

GSTR-3B (Monthly)GST136 days

31 December 2026

GSTR-9 Annual ReturnGST147 days

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