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Due dates for September 2026

GST, TDS, income tax, ROC, PF, ESI and professional tax deadlines that fall due in September 2026, and the period each one is for. Updated the day the government extends a date.

  • 22 due dates
  • GST7
  • TDS and TCS2
  • Income tax3
  • ROC and MCA1
  • PF, ESI and PT9
Extended by the government
  • Tax audit report for FY 2025-26: due 30 Sep 2026, now due 21 Oct 2026 (CBDT Circular No. 07/2026 dated 28-09-2026)

  1. 7 Monday, 7 September 2026

    • TCS deposit

      TDS and TCS

      Challan 281, for August 2026

    • TDS deposit

      TDS and TCS

      Challan 281, for August 2026

  2. 10 Thursday, 10 September 2026

    • GSTR-7

      GST

      GSTR-7 (GST TDS deductors), for August 2026

    • GSTR-8

      GST

      GSTR-8 (e-commerce TCS), for August 2026

    • PT return

      PF, ESI and PT

      Professional tax, for August 2026. Telangana and Andhra Pradesh

  3. 11 Friday, 11 September 2026

    • GSTR-1

      GST

      GSTR-1 (monthly filers), for August 2026

  4. 13 Sunday, 13 September 2026

    • GSTR-6

      GST

      GSTR-6 (input service distributors), for August 2026

    • IFF

      GST

      Invoice Furnishing Facility (QRMP), for August 2026

  5. 15 Tuesday, 15 September 2026

    • Advance tax instalments

      Income tax

      Challan 280, for Q2 FY 2026-27 (Jul–Sep)

    • ECR (Form VII)

      PF, ESI and PT

      EPF return and payment, for August 2026

    • ESIC challan

      PF, ESI and PT

      ESIC contribution, for August 2026

    • PT return

      PF, ESI and PT

      Professional tax, for August 2026. Maharashtra

    • PT return

      PF, ESI and PT

      Professional tax, for August 2026. Gujarat

  6. 20 Sunday, 20 September 2026

    • GSTR-3B

      GST

      GSTR-3B (monthly filers), for August 2026

    • Form XII

      PF, ESI and PT

      EPF abstract for contract workers (principal employer), for August 2026

    • PT return

      PF, ESI and PT

      Professional tax, for August 2026. Karnataka

  7. 21 Monday, 21 September 2026

    • PT return

      PF, ESI and PT

      Professional tax, for August 2026. West Bengal

  8. 25 Friday, 25 September 2026

    • PMT-06

      GST

      PMT-06 tax payment (QRMP), for August 2026

  9. 27 Sunday, 27 September 2026

    • AOC-4

      ROC and MCA

      AOC-4 financial statements, for FY 2025-26. One person company (180 days after the year end)

  10. 30 Wednesday, 30 September 2026

    • Form 10B / 10BB

      Income tax

      Audit report of a charitable trust or institution, for AY 2026-27

    • Form 3CA/3CB-3CD

      Income tax

      Tax audit report, for AY 2026-27. Return due 31 October

      Extended to 21 Oct 2026 by CBDT Circular No. 07/2026 dated 28-09-2026

    • PT return

      PF, ESI and PT

      Professional tax (half-yearly), for H1 FY 2026-27 (Apr–Sep). Tamil Nadu

Dates are the statutory due dates from Comply’s compliance catalogue, which our team checks against official notifications. Some depend on your registration or on when an event is held; check the notification for your case. This page is information, not tax advice.