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September 2026 Deadlines

15 compliance deadlines due in September 2026 for Indian businesses and CAs. All GST, TDS, Income Tax, ROC, PF, ESI, and Professional Tax filing dates.

AprMayJunJulAugSepOctNovDecJanFebMar
7
Sep
2026
TDSTDS Deposit

Monthly TDS deposit to government

Details
10
Sep
2026
GSTGSTR-7

Monthly return for GST TDS deductors

Details
10
Sep
2026
GSTGSTR-8

Monthly return for e-commerce TCS collectors

Details
11
Sep
2026
GSTGSTR-1

Monthly return of outward supplies

Details
13
Sep
2026
GSTGSTR-6

Monthly return for Input Service Distributors

Details
15
Sep
2026
PF / EPFOPF ECR

EPF monthly contribution and return

Details
15
Sep
2026
ESIESI Contribution

ESI monthly contribution

Details
15
Sep
2026
Income TaxAdvance Tax (Q2)

Second installment - 45% of estimated tax

Details
20
Sep
2026
GSTGSTR-3B

Monthly summary return with tax payment

Details
20
Sep
2026
Professional TaxProfessional Tax (KA)

Monthly professional tax payment

Details
21
Sep
2026
Professional TaxProfessional Tax (WB)

Monthly professional tax payment

Details
28
Sep
2026
Professional TaxProfessional Tax (MH)

Monthly professional tax payment

Details
30
Sep
2026
ROC / MCADIR-3 KYC

Annual director KYC with MCA

Details
30
Sep
2026
Income TaxTax Audit Report

Tax audit report under Section 44AB

Details
30
Sep
2026
ROC / MCAAGM

Annual General Meeting — must be held within 6 months of FY end

Details
August 2026October 2026

Never miss a deadline in September 2026

CAtrak auto-generates a compliance calendar for every client and sends WhatsApp reminders before each due date.

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