Free calculator

Advance Tax Calculator

Work out each quarterly instalment and its due date.

Advance Tax Calculator — how it works

If your total tax liability for the year (after TDS) is ₹10,000 or more, the law requires you to pay it in instalments through the year rather than in one go at filing time. This calculator splits your estimated tax into the four instalments and tells you what's due and when.

The instalment schedule

Advance tax follows a fixed cumulative schedule: 15% by 15 June, 45% by 15 September, 75% by 15 December, and 100% by 15 March. Each instalment is cumulative — so the September payment covers the gap between 15% and 45% of your total liability, not a fresh 45%.

Who needs to pay it

Anyone — salaried, freelancer, or business — whose net tax liability after TDS/TCS crosses ₹10,000 in a financial year. Senior citizens without business income are exempt.

What happens if you miss it

Missing or underpaying an instalment attracts interest under sections 234B and 234C, calculated monthly on the shortfall. Getting the estimate right early avoids this at filing time.

The formula

Instalment due = (Cumulative % × estimated annual tax) − instalments already paid

Why use Pretax's advance tax calculator

  • Current rates. Slabs and limits are reviewed against the current Finance Act.
  • Nothing leaves your browser. Every calculation runs on your device — we never see or store what you type.
  • Built by working CAs. The same team that files returns for our clients maintains these formulas.
  • Free, no signup. No account and no email required to see a result.

Frequently asked questions

Do I need to pay advance tax if my employer deducts TDS?
Only if your total tax liability after all TDS/TCS still exceeds ₹10,000 for the year — common if you have other income like capital gains, freelance work, or interest, on top of your salary.
What if I overpay an instalment?
Excess advance tax paid is refunded when you file your return, along with interest under section 244A if applicable.
Expert help

Need a filing-ready number?

This tool gives an estimate. Our team can prepare a full computation for your situation.

Talk to an expert