A tax and GST compliance calendar for 2026-27, filtered to your business
This tax calendar 2026-27 lists every income-tax and GST due date between 1 April 2026 and 31 March 2027 that applies to you: advance tax instalments, TDS and TCS deposits and statements, Form 16, the ITR due date for AY 2026-27, the tax audit report, and GST returns — GSTR-1, GSTR-3B, IFF, PMT-06, CMP-08, GSTR-4 and GSTR-9.
Tell it what kind of return you file and how you are registered for GST, and the list shrinks to your dates, with the next one highlighted. Press Add to calendar to get an .ics file with reminders for Google Calendar, Outlook or Apple Calendar, or download a CSV. Every date names the rule or notification it comes from and is shown “as of” the day it was checked, because deadlines are extended often. It is informational, not tax advice.
How to use the Tax & GST Compliance Calendar 2026-27
- Pick your income-tax return type for AY 2026-27 and your GST registration (monthly, quarterly QRMP or composition).
- For QRMP, choose your state — quarterly GSTR-3B is due on the 22nd or the 24th depending on it.
- Tick what else applies: advance tax, TDS, TCS, GST turnover above ₹2 crore or ₹5 crore.
- Read the list month by month; tick Hide dates that have passed to see only what is coming.
- Choose a reminder and press Add to calendar (.ics), or download the CSV or print the list.
Tax & GST Compliance Calendar 2026-27 features
Only your dates
Filters for return type, TDS, TCS and the three GST schemes, with state-wise QRMP dates.
Calendar file with reminders
Standard iCalendar (.ics) all-day events with an optional reminder 1, 2 or 7 days before.
Sources on every date
Each entry names its rule, circular or notification; the links are below the list.
Extensions already applied
The 21 November 2026 audit-case ITR date, the 21 October tax audit report and the 21 April GSTR-3B for March 2026.
Old and new rules
FY 2025-26 forms (24Q, 26Q, 27EQ, Form 16) and the new Income-tax Rules, 2026 forms (138, 140, 143, 144).
Key income-tax due dates for 2026-27
| Date | What is due |
|---|---|
| 15 Jun, 15 Sep, 15 Dec 2026, 15 Mar 2027 | Advance tax for tax year 2026-27: 15%, 45%, 75%, 100% |
| 31 July 2026 | ITR for AY 2026-27 without business income (ITR-1, ITR-2) |
| 31 August 2026 | ITR for business or profession without audit (moved from 31 July) |
| 21 October 2026 | Tax audit report (extended from 30 September) |
| 21 November 2026 | ITR for audit cases and companies (extended from 31 October) |
| 30 November 2026 | ITR for transfer-pricing cases |
| 31 December 2026 / 31 March 2027 | Belated return / last date to revise (fee after 31 December) |
| 7th of each month | TDS and TCS deposit for the previous month (30 April for March TDS) |
| 31 Jul, 31 Oct 2026, 31 Jan 2027 | TDS and TCS statements in Forms 138, 140, 143 and 144 |
GST return due dates
Missed one? Work out the cost with the GST late fee calculator and the GST interest calculator; for income tax, the 234A, 234B and 234C interest calculator.
| Return | Due date |
|---|---|
| GSTR-1 (monthly) | 11th of the next month |
| GSTR-1 (QRMP) and IFF | 13th of the month after the quarter; IFF by the 13th for months 1 and 2 |
| GSTR-3B (monthly) | 20th of the next month |
| GSTR-3B (QRMP) | 22nd or 24th of the month after the quarter, by state |
| PMT-06 (QRMP) | 25th of the next month, for months 1 and 2 |
| CMP-08 / GSTR-4 | 18th after each quarter / 30 June after the year |
| GSTR-9 and GSTR-9C | 31 December after the year; GSTR-9 optional up to ₹2 crore turnover |
Tax & GST Compliance Calendar 2026-27 FAQ
What is the GST return due date for GSTR-3B?
The 20th of the next month for monthly filers. Under QRMP it is the 22nd of the month after the quarter in the western and southern states and the 24th in the northern and eastern states and Delhi. March 2026 was extended to 21 April 2026.
What are the advance tax due dates for FY 2026-27?
15 June 2026 (15%), 15 September 2026 (45%), 15 December 2026 (75%) and 15 March 2027 (100%). Presumptive income pays it all by 15 March. Plan the amounts with the advance tax calculator.
What is the ITR due date for AY 2026-27?
31 July 2026 without business income, 31 August 2026 for non-audit business or profession, 21 November 2026 for audit cases and companies (extended from 31 October by CBDT Circular 07/2026) and 30 November 2026 for transfer-pricing cases.
How do I add these dates to Google Calendar or Outlook?
Press “Add to calendar (.ics)” and open or import the file. Google Calendar: Settings → Import. Outlook and Apple Calendar open .ics files directly.
Will the calendar update when dates are extended?
Not on its own — the downloaded file is a snapshot. The page shows the date each entry was checked; re-download after an extension.
Is this tax advice?
No. It is an informational list of statutory dates; check the latest notification before relying on one.