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Statutory deadline
Advance tax due dates
The instalments are cumulative, not equal — which is why missing the first one makes the second one larger rather than optional.
Advance tax — 1st instalment
15% of the year's estimated liability
Falls due
15 June
Applies if
your annual tax liability will exceed ₹10,000
Advance tax — 2nd instalment
45% cumulative, less what you have paid
Falls due
15 September
Applies if
your annual tax liability will exceed ₹10,000
Advance tax — 3rd instalment
75% cumulative, less what you have paid
Falls due
15 December
Applies if
your annual tax liability will exceed ₹10,000
Advance tax — final instalment
100% of the year's liability
Falls due
15 March
Applies if
your annual tax liability will exceed ₹10,000
Extensions happen. These are the statutory dates. The CBIC and CBDT extend them often enough that you should confirm against the official portal before relying on one — particularly in the first year of a change. Cortex warns you ahead of the statutory date, which is the one you can plan around.
Stop tracking this by hand.
Cortex watches every statutory date that applies to you alongside your receivables, your payables and the MSME 45-day clock — and emails you before one costs you money, rather than after. Upload a Tally, Vyapar or Busy export and it reads your numbers as they come.
General information, not tax advice. Your own dates depend on your registration, turnover and constitution — check with your CA.