Compliance calendar · upcoming month
GST, TDS and ROC due dates for September 2027
September 2027 at a glance
- GST4
- Income Tax2
- TDS / TCS1
- PF / ESI2
- ROC / MCA1
Dates as recorded in our compliance calendar, last updated 29 October 2026; this page is refreshed daily.
Due dates in September 2027
- 7Tue
- TDS / TCS
Deposit TDS / TCS deducted last month
Challan 281 for August 2027Due: Tuesday, 7 September 2027. Who: Every deductor. Tax deducted or collected in the previous month. March deductions are due by 30 April.
- 11Sat
- GST
GSTR-1 (monthly filers)
GSTR-1 for August 2027Due: Saturday, 11 September 2027. Who: Regular taxpayers with turnover above ₹5 crore, or who chose monthly filing. Outward supplies for the previous month.
- 13Mon
- GST
Invoice Furnishing Facility (QRMP)
IFFDue: Monday, 13 September 2027. Who: QRMP filers who want B2B invoices of month 1 or 2 of the quarter to reach buyers early. Optional upload of B2B invoices for the previous month.
- 15Wed
- Income Tax
Advance tax — 2nd instalment (45% cumulative)
e-Pay Tax (choose the tax year)Due: Wednesday, 15 September 2027. Who: As above. 45% of the year's estimated tax, cumulatively.
- PF / ESI
EPF contribution and ECR
ECR for August 2027Due: Wednesday, 15 September 2027. Who: Establishments with 20+ employees (or voluntarily covered). For the previous month's wages.
- PF / ESI
ESI contribution
ESIC challan for August 2027Due: Wednesday, 15 September 2027. Who: Establishments with 10+ employees in notified areas. For the previous month's wages.
- 20Mon
- GST
GSTR-3B (monthly filers)
GSTR-3B for August 2027Due: Monday, 20 September 2027. Who: Monthly filers. Summary return and tax payment for the previous month.
- 25Sat
- GST
QRMP monthly tax payment
PMT-06Due: Saturday, 25 September 2027. Who: QRMP filers, for months 1 and 2 of a quarter. Pay tax for the previous month (fixed-sum or self-assessment method).
- 30Thu
- Income Tax
Tax audit report
Form 3CA/3CB-3CD (Form No. 26 from tax year 2026-27)Due: Thursday, 30 September 2027. Who: Turnover above ₹1 crore (₹10 crore if ≤5% cash) or professional receipts above ₹50 lakh. For the previous financial year.
Note: Assessees who also file a transfer-pricing report (s.92E): 31 October.
- ROC / MCA
Annual general meeting — last date
AGMDue: Thursday, 30 September 2027. Who: Every company (other than OPC). Within six months of year end; first AGM within nine months.
The monthly items (Challan 281, GSTR-1, ECR, ESIC challan and GSTR-3B) are for August 2027; the quarterly and annual items say which period they cover. Each item below says who it applies to, so a business can skip what does not concern it: a composition dealer, a QRMP filer and a monthly filer each have different GST dates, and the ROC items depend on whether the business is a company or an LLP.
The dates are the statutory ones. A date that falls on a Sunday or a holiday is shown as the law fixes it, not moved; an extension or fee waiver notified by CBDT, CBIC or the MCA is applied, and the item's note names the circular or notification. For your own business, the reminders and the filing can be handled by our expert team.
Dates as recorded in our compliance calendar, last updated 29 October 2026; this page is refreshed daily. Confirm on the GST portal, the income-tax portal and the MCA portal.
Questions about September 2027
What are the GST due dates in September 2027?
Four GST dates in September 2027: GSTR-1 (monthly filers) (GSTR-1 for August 2027) by 11 September 2027, for regular taxpayers with turnover above ₹5 crore, or who chose monthly filing; Invoice Furnishing Facility (QRMP) (IFF) by 13 September 2027, for QRMP filers who want B2B invoices of month 1 or 2 of the quarter to reach buyers early; GSTR-3B (monthly filers) (GSTR-3B for August 2027) by 20 September 2027, for monthly filers; QRMP monthly tax payment (PMT-06) by 25 September 2027, for QRMP filers, for months 1 and 2 of a quarter.
When is TDS or TCS due in September 2027?
One TDS/TCS date in September 2027: Deposit TDS / TCS deducted last month (Challan 281 for August 2027) by 7 September 2027, for every deductor.
Is there an income-tax due date in September 2027?
Two income-tax dates in September 2027: Advance tax — 2nd instalment (45% cumulative) (e-Pay Tax (choose the tax year)) by 15 September 2027; Tax audit report (Form 3CA/3CB-3CD (Form No. 26 from tax year 2026-27)) by 30 September 2027, for turnover above ₹1 crore (₹10 crore if ≤5% cash) or professional receipts above ₹50 lakh.
Which ROC or MCA filings fall in September 2027?
One ROC date in September 2027: Annual general meeting — last date (AGM) by 30 September 2027, for every company (other than OPC).
When are PF and ESI contributions due in September 2027?
Two PF/ESI dates in September 2027: EPF contribution and ECR (ECR for August 2027) by 15 September 2027, for establishments with 20+ employees (or voluntarily covered); ESI contribution (ESIC challan for August 2027) by 15 September 2027, for establishments with 10+ employees in notified areas.
Have any September 2027 dates been extended?
This page lists the statutory due dates, not shifted for holidays, with any extension notified by CBDT, CBIC or the MCA already applied (the item's note names the document). Notes our calendar carries for this month: Tax audit report: Assessees who also file a transfer-pricing report (s.92E): 31 October. A new extension is announced first on the GST, income-tax or MCA portal; check there before relying on a date.
Keep every date
Download the dates for the next twelve months into Google Calendar or Outlook, open the month in the full calendar to filter by area, or ask our expert team to file them for you.
Other months: November 2026 · December 2026 · January 2027 · February 2027 · March 2027 · April 2027 · May 2027 · June 2027 · July 2027 · August 2027 · October 2027
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