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Calculate advance tax installments and due dates for FY 2025-26.
We'll instantly compare both tax regimes and show which saves you more.
Indicative result — final figures may differ based on specific facts.
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Indicative results — final figures may differ based on specific facts and recent amendments. Contact us for a tailored review.
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Step by step
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Detailed methodology
The exact formula, statutory references and edge-cases used to compute your result. Click any card to see the relevant sub-section of the Income Tax Act, 1961.
Advance tax is paid in 4 instalments: 15% by 15 June, 45% by 15 September, 75% by 15 December, 100% by 15 March. Each instalment is cumulative — 15% of total tax by June, 45% by Sept (additional 30%), 75% by Dec (additional 30%), 100% by March (additional 25%).
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Want the math? See Detailed methodology further down this page.
What we assume
What these numbers can and can't tell you.
Percentages, slabs, and the FY 2025-26 numbers we use.
Sections, eligibility, and stacking rules.
Heads up. For situations involving international income, business income, or capital gains, always cross-check with a qualified Chartered Accountant before acting on these numbers.
If advance tax paid is less than 90% of assessed tax, interest at 1% per month (simple) is charged on the shortfall. Computed from the start of the assessment year (1 April) until actual payment.
Interest for short-payment of individual instalments: 1% per month for 3 months on shortfall from each due date. Pre-computed rates — 15% shortfall in June attracts 3-month interest, 45% in September, 75% in December.
Capital gains tax is not subject to advance tax — paid via self-assessment tax before filing ITR. Business income, salary, interest, rent, and other regular income are included in advance tax computation.
Senior citizens (60 years or above) not having business income are exempt from advance tax — can pay entire tax via self-assessment by 31 March without interest under 234B/234C.
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