A compliance calendar for FY 2026-27 lists every statutory due date a private limited company must meet from April 2026 to March 2027: TDS on the 7th, GST returns on the 11th and 20th, PF and ESI on the 15th, quarterly advance tax, and the AGM, AOC-4 and MGT-7. What goes wrong is the line nobody owned that month.
In OneFinOps, this calendar is built from your own registrations, and each line carries a named preparer and reviewer.
Key takeaways
- Every month: 7th TDS and TCS, 11th GSTR-1, 15th PF and ESI, 20th GSTR-3B.
- Quarterly TDS and TCS statements are now Forms 138, 140, 144 and 143.
- The crunch is September to November: audit, AGM, return, AOC-4, MGT-7.
Monthly compliance dates
TDS and TCS deposit by the 7th (30 April for March TDS), GSTR-1 by the 11th, EPF and ESI by the 15th, GSTR-3B and GST payment by the 20th, and professional tax on state-specific dates. QRMP filers use IFF by the 13th and PMT-06 by the 25th in months 1 and 2.
FY 2026-27 is the first tax year under the Income Tax Act, 2025: Form 138 replaced 24Q, Form 140 replaced 26Q, Form 144 replaced 27Q and Form 143 replaced 27EQ. TCS now shares the TDS dates. More in TDS due dates for FY 2026-27.
Compliance calendar FY 2026-27: month by month
Monthly dates are not repeated; past dates are kept for checking.
| Month | Date | Compliance |
|---|---|---|
| April 2026 | 7 Apr | TCS for March 2026 (old rules) |
| 20 Apr, extended to 21 Apr | GSTR-3B, March 2026 (Notification 01/2026-Central Tax) | |
| 25 Apr | ITC-04, Oct 2025 to Mar 2026 | |
| 30 Apr | TDS for March 2026; MSME-1 for Oct 2025 to Mar 2026 | |
| May 2026 | 15 May | Form 27EQ for Q4 FY 2025-26 (old form) |
| 31 May | Forms 24Q, 26Q, 27Q for Q4 FY 2025-26 (old forms) | |
| June 2026 | 15 June | Advance tax 15%; Form 16 and Q4 Form 16A for FY 2025-26 |
| 30 June | DPT-3 for FY 2025-26; DIR-3 KYC Web only in a director’s triennial year | |
| July 2026 | 31 July | Forms 138, 140, 144, 143 for Q1 (first filing in new forms) |
| August 2026 | 15 Aug | Forms 131 and 133, Q1 |
| September 2026 | 15 Sep | Advance tax 45% |
| 30 Sep | Tax audit report for FY 2025-26 (Forms 3CA or 3CB with 3CD); AGM for FY 2025-26 | |
| October 2026 | Within 15 days of AGM | ADT-1, if an auditor was appointed or re-appointed |
| 25 Oct | ITC-04, Apr to Sep 2026 (turnover above ₹5 crore) | |
| 29 Oct | AOC-4 for FY 2025-26 | |
| 31 Oct | Income tax return for FY 2025-26 (audited companies); Form 3CEB; Forms 138, 140, 144, 143 for Q2; MSME-1 for Apr to Sep 2026 | |
| November 2026 | 15 Nov | Forms 131 and 133, Q2 |
| 29 Nov | MGT-7 or MGT-7A for FY 2025-26 | |
| 30 Nov | Income tax return, transfer pricing cases; last date to claim FY 2025-26 GST input tax credit | |
| December 2026 | 15 Dec | Advance tax 75% |
| 31 Dec | GSTR-9 and GSTR-9C for FY 2025-26 | |
| January 2027 | 31 Jan | Forms 138, 140, 144, 143 for Q3 |
| February 2027 | 15 Feb | Forms 131 and 133, Q3 |
| March 2027 | 15 Mar | Advance tax 100% |
| 31 Mar | Last board meeting if needed for the four-meeting rule |
As of 28 September 2026, the CBDT had not extended the 30 September 2026 tax audit report date. ROC dates hang off the AGM, so fix it first (AOC-4 and MGT-7).
Worked example. Vindhya Software’s accountant is on leave in October 2026. GSTR-3B goes in 10 days late (₹500 late fee plus ₹2,959 interest), Form 140 30 days late (₹6,000) and AOC-4 60 days late (₹6,000). Total avoidable cost: ₹15,459.
How OneFinOps keeps the calendar
The filing calendar is built per entity, registration and jurisdiction, with an owner, preparer and reviewer on every obligation. The Tax Agent tracks each one to its due date, escalates at-risk filings before the date arrives, and prepares each GST return from the postings. It does not file on its own: every filing goes to the named preparer and reviewer, and the acknowledgement, challan and SRN are stored against the line. Most calendars live apart from the numbers; here the date, the draft and the evidence sit on one record, so Vindhya’s three slips would have been escalated in time.
See the ROC compliance calendar
