Free Tool

Advance Tax Calculator

Plan your four advance-tax instalments and estimate Section 234C interest, with a 234B shortfall check.

Your liability

234C check — advance tax actually paid up to each date (cumulative, optional)

Basis — s. 208, 234B & 234C

  • Liability to pay (s.208): advance tax is payable only where tax payable (after TDS) is ₹10,000 or more.
  • Instalments: 15% by 15 Jun, 45% by 15 Sep, 75% by 15 Dec, 100% by 15 Mar.
  • 234C (deferment): 1% per month on the shortfall in each instalment \u2014 3 months for the first three, 1 month for the last. No interest for the June/September instalment if at least 12% / 36% is paid by then.
  • 234B (default): if advance tax paid is under 90% of assessed tax, 1% per month on the shortfall from 1 April of the assessment year till payment.
  • Interest on shortfalls arising from capital gains / lottery is computed only from the instalment after the income arose.
Disclaimer: This calculator is a free reference tool based on the provisions cited. Results are indicative and may not cover every special case, surcharge, cess or exemption applicable to your facts. Verify against the bare Act and the latest CBIC/CBDT notifications, and consult a professional before acting. In conformity with the ICAI Website Guidelines.