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Compliance calendar

Statutory due dates by month, with the rule or section for each. Dates are not moved for holidays, and the government sometimes extends them, so check the latest notification before you rely on a date.

Aug

September 2026

Oct

Date	Compliance	Law	Period
7 Sep, Mon	TDS/TCS deposit Rule 218(2)(b), Income-tax Rules, 2026	Income tax	August 2026
10 Sep, Thu	GSTR-7 (TDS under GST) Rule 66, CGST Rules, 2017	GST	August 2026
10 Sep, Thu	GSTR-8 (TCS by e-commerce operators) Rule 67, CGST Rules, 2017	GST	August 2026
11 Sep, Fri	GSTR-1 (monthly filers) Rule 59, CGST Rules, 2017	GST	August 2026
13 Sep, Sun	IFF (optional, QRMP filers) Rule 59, CGST Rules, 2017	GST	August 2026
15 Sep, Tue	Advance tax 2nd instalment (45%) Section 408, Income-tax Act, 2025	Income tax	FY 2026-27
15 Sep, Tue	ESI contribution Regulation 31, ESI (General) Regulations, 1950	PF/ESI	August 2026
15 Sep, Tue	PF contribution and ECR Para 38, EPF Scheme, 1952	PF/ESI	August 2026
20 Sep, Sun	GSTR-3B (monthly filers) Rule 61, CGST Rules, 2017	GST	August 2026
25 Sep, Fri	PMT-06 tax payment (QRMP filers) Rule 61, CGST Rules, 2017	GST	August 2026
30 Sep, Wed	DIR-3 KYC (directors) Rule 12A, Companies (Appointment and Qualification of Directors) Rules, 2014	Company law	FY 2025-26