Tax Compliance Calendar
Every due date for FY 2026-27 in one place. Filter by category, month, or taxpayer type.
| Date | Category | Description | Who | Penalty / Consequence |
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How to read the compliance calendar
Every deadline is colour-coded by law and by urgency. A red date is already overdue, amber falls in the current month, and green is due within 30 days. Use the category, month and taxpayer filters to narrow the list to exactly the returns you file.
ITR filing, advance-tax installments, tax-audit and TP reports under the Income-tax Act.
GSTR-1, GSTR-3B (monthly & QRMP) and the GSTR-9/9C annual return.
Monthly TDS/TCS deposits and quarterly 24Q/26Q/27EQ statements.
AOC-4, MGT-7/7A annual filings and DIR-3 KYC with the MCA.
Monthly PF & ESI deposits and the EPF electronic challan return.
Deadlines you can't afford to miss
Advance tax (15 Jun · 15 Sep · 15 Dec · 15 Mar)
Pay tax in four installments if your annual liability exceeds ₹10,000. Shortfalls attract interest u/s 234B and 234C at 1% per month.
ITR filing (15 Sep for individuals)
Missing the return deadline triggers a late fee up to ₹5,000 u/s 234F plus interest, and you lose the right to carry forward most losses.
GSTR-3B & GSTR-1 (monthly / QRMP)
Late filing costs ₹50/day (₹20/day for nil) plus 18% interest on unpaid tax, and blocks your buyers' input tax credit.
ROC annual filings (30 Jun · DIR-3 KYC)
AOC-4 and MGT-7 attract ₹200/day additional fees with no cap, and a missed DIR-3 KYC deactivates the director's DIN.
What are the key income tax deadlines for FY 2025-26?
Key deadlines include: advance tax instalments on 15 June, 15 September, 15 December, and 15 March; ITR filing for individuals by 31 July 2026; tax audit report by 30 September 2026; and belated/revised ITR by 31 December 2026.
When must Form 16 be issued by the employer?
Employers must issue Form 16 (TDS certificate for salary) to employees by 15 June of the assessment year. For FY 2025-26, Form 16 must be issued by 15 June 2026. Form 16A (for non-salary TDS) must be issued within 15 days of the due date of the TDS return.
What is the deadline to file a revised income tax return?
A revised ITR can be filed any time before 3 months before the end of the relevant assessment year or before the completion of assessment, whichever is earlier. For AY 2026-27 (FY 2025-26), the revised ITR deadline is 31 December 2026.
When is the TDS return filing due date?
TDS returns (Form 24Q for salary, 26Q for non-salary, 27Q for payments to non-residents) are filed quarterly: Q1 (April-June) by 31 July; Q2 (July-September) by 31 October; Q3 (October-December) by 31 January; Q4 (January-March) by 31 May.
What is the deadline for tax audit report under Section 44AB?
The tax audit report (Form 3CA/3CB with Form 3CD) must be filed by 30 September of the assessment year. For FY 2025-26, the tax audit report is due by 30 September 2026. Failure to get accounts audited attracts a penalty of 0.5% of turnover or Rs 1,50,000, whichever is less.
Disclaimer: This tool gives indicative results for general guidance only and is not professional advice. Please verify with a qualified CA before acting on the numbers.