Compliance Calendar 2026 — GST, TDS, ITR & ROC

Never miss a statutory deadline — every GST, TDS, advance tax, EPF/ESI and ROC due date for 2026 in one place. Add to Google Calendar in one click. Free.

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What you can do here

Monthly GSTR-1 and GSTR-3B due dates
TDS deposit and 24Q/26Q quarterly deadlines
Advance tax instalments (June, September, December, March)
EPF/ESI monthly challans
ROC: AOC-4, MGT-7, DIN KYC and LLP annual deadlines

The dates that repeat every month

Most of the year is four recurring obligations. GSTR-1 is due on the 11th of the following month for monthly filers, GSTR-3B on the 20th. TDS deducted in a month must be deposited by the 7th of the next, with the March deduction allowed until 30 April. EPF and ESI contributions are due by the 15th. QRMP filers move GSTR-1 to a quarterly cycle but still pay monthly through PMT-06 — the name says quarterly, the money is monthly, and that gap is where most late fees originate.

The quarterly and annual layer

On top of the monthly rhythm sit the dates that are easy to forget precisely because they come round rarely. Advance tax runs in four cumulative instalments — 15%, 45%, 75% and 100% by 15 June, 15 September, 15 December and 15 March. TDS returns (24Q, 26Q) are quarterly. On the ROC side, AOC-4 is due within 30 days of the AGM, MGT-7 within 60, DIR-3 KYC by 30 September, and for LLPs Form 11 by 30 May and Form 8 by 30 October.

Why a missed GST return blocks the next one

GST returns must be filed in sequence. Miss one month and the following month cannot be filed until the gap is closed, so a single lapse quietly becomes a chain — and late fees accrue on every pending period simultaneously. Continuous non-filing also triggers cancellation proceedings under REG-17. This is why a nil return still matters: it takes two minutes, can be filed by SMS, and keeps the sequence unbroken.

What each kind of delay actually costs

The penalties are not interchangeable. GST carries a per-day late fee plus 18% annual interest on the tax paid in cash. Late TDS deposit attracts 1.5% per month, and a late TDS return carries a daily fee under section 234E. Income-tax filing after the due date brings a fee under section 234F, interest under 234A, and — the expensive one — the loss of your right to carry losses forward. ROC forms run at ₹100 per day per form with no ceiling.

Set the reminders earlier than the deadline

Every due date here needs work done before it, so a reminder on the day is a reminder to be late. Set them three to five working days early, and add a separate reminder for the reconciliation step — matching GSTR-2B against your purchase register before claiming ITC, or checking Form 26AS and AIS before filing your return. The reconciliation tools cover both of those checks.

Frequently asked questions

What is the GSTR-3B due date?

For monthly filers, GSTR-3B is due on the 20th of the following month. For QRMP quarterly filers, it is the 22nd/24th (staggered by state).

When is advance tax due?

Four instalments: 15 June (15%), 15 September (45%), 15 December (75%) and 15 March (100%). Miss a date and Section 234B/234C interest applies.