Advance Tax Calculator
How much advance tax to pay by each due date, and the interest if you pay late.
Tax Year 2026-27 Income-tax Act, 2025 · resident individuals · Sources
Instalments and interest
Your tax for the year
Rules used and official sources
Tax rules and rates change. This calculator follows the rules described on this page and may not cover every situation. Check the official source or a qualified tax professional before filing or invoicing.
About the Advance Tax Calculator
If your tax for the year, after TDS and TCS, is ₹10,000 or more, you pay it during the year as advance tax: at least 15% by 15 June, 45% by 15 September, 75% by 15 December and 100% by 15 March — or all of it by 15 March if you declare presumptive business or professional income. Paying less, or later, costs interest.
This calculator estimates your tax for Tax Year 2026-27 (Income-tax Act, 2025) or FY 2025-26 (Income-tax Act, 1961) with the same engine as our income tax calculator — or takes the tax you already know — subtracts TDS and TCS, checks whether you have to pay at all, and lays out each instalment. Enter what you have paid so far to see the interest for deferment (section 425; 234C), the interest for default (section 424; 234B) and what to pay by the next due date. It all runs in your browser.
How to use it
- Pick the year. For the current year (Tax Year 2026-27) the next due date is shown; for FY 2025-26 you can check the interest on a return you are filing.
- Choose Work it out and enter your salary, business or professional income, interest and other income, dividends and capital gains, with your regime, age and deductions — or choose I know it and enter your tax for the year.
- Enter the TDS and TCS on this year’s income, and tick presumptive income if you declare it under section 58 (44AD or 44ADA).
- Add the advance tax you have paid in each window, and the date you will pay the rest (usually when you file your return).
- Read whether advance tax is due, each instalment, the shortfalls and the interest. Copy the summary or download the schedule as CSV.
Examples
Paid ₹20,000 by 15 June, ₹50,000 by 15 September, ₹40,000 by 15 December and ₹40,000 by 15 March
Tax ₹3,43,200 − TDS ₹1,80,000 = ₹1,63,200 of advance tax · interest ₹372 (December) + ₹132 (March) = ₹504 · no section 424 interest, as more than 90% was paid
June and September carry no interest even though they were short: ₹20,000 is more than 12% and ₹70,000 more than 36% of the tax.
Section 425: ₹732 + ₹2,202 + ₹3,672 + ₹1,632 = ₹8,238 · section 424: 1% × ₹1,63,200 × 4 months = ₹6,528 · total interest ₹14,766
Advance tax ₹1,09,200, all due by 15 March 2027. Paying ₹1,00,000 by 15 March and the rest by 31 March costs ₹92 of interest (1% of ₹9,200)
No advance tax at all (section 403(3); 207(2)) — pay the tax as self-assessment tax before filing the return
Who has to pay advance tax
Anyone whose tax for the year, less TDS and TCS, is ₹10,000 or more (section 404 of the Income-tax Act, 2025; section 208 of the 1961 Act). The tax is worked out on your estimated income at the rates in force, with surcharge and the 4% cess, after any rebate (section 405). Salaried people usually owe nothing extra, because the employer deducts tax from the salary — but large interest, rent, capital gains or freelance income on top can push the balance over ₹10,000.
Exempt: a resident individual who is 60 or older at any time in the year and has no income from business or profession need not pay advance tax (section 403(3); 207(2)). Such a person pays the tax due as self-assessment tax before filing the return.
Due dates and how much
The instalments are cumulative: at least 15%, 45%, 75% and 100% of the year’s advance tax by those dates (section 408(1); 211(1)). If you declare presumptive profits of a business or profession under section 58(2) (Table Sl. No. 1 or 3) — 44AD or 44ADA for FY 2025-26 — you may pay 100% by 15 March in a single instalment (section 408(2)). Anything paid by 31 March counts as advance tax for that year (section 408(3)). You can revise the estimate at each instalment and pay more or less in the remaining ones.
Interest for paying late or too little
Deferment (section 425; 234C). For each instalment, the shortfall against 15%, 45%, 75% and 100% of the tax due on your returned income carries interest of 3%, 3%, 3% and 1% — three months at 1% a month for the first three. There is no interest for the June instalment if you paid at least 12%, or for September if you paid at least 36%. With presumptive income the only test is 1% on the shortfall at 15 March. No interest arises on the tax on capital gains, dividends, lottery-type winnings or new business income that came after a due date, as long as you pay it in the later instalments or by 31 March (section 425(4)).
Default (section 424; 234B). If the advance tax you paid is less than 90% of the tax due, you pay 1% a month or part of a month on the shortfall from 1 April after the year until you pay it. Paying on 31 July means four months; on 1 August, five.
For both, part of a month counts as a whole month and the amount is rounded down to a multiple of ₹100 (rule 269 of the Income-tax Rules, 2026; rule 119A of the 1962 Rules).
Sources
Income-tax Act, 2025, sections 403 to 410, 424 and 425; Finance Act, 2026, which sets the rates for Tax Year 2026-27 and the return due dates (31 July, or 31 August for business income without an audit); Income-tax Rules, 2026, rule 269. FY 2025-26 follows sections 207 to 211, 234B and 234C of the Income-tax Act, 1961, with the same percentages and dates.
Limitations
- For resident individuals. Companies, firms and non-residents follow the same instalments, but the income and the tax are worked out differently.
- The estimate treats your income as slab-rate income, dividends and three kinds of capital gains. Use the income tax calculator for HRA, house property, presumptive turnover limits and other details, then enter the tax here under “I know it”.
- Interest is worked out as if the tax on your return equals your estimate, and as if all of it was expected from the start of the year. The relief in section 425(4) for gains and dividends that arise later is explained but not modelled.
- Interest for default is shown until the date you enter. If the department later assesses more tax, more interest can be charged on that.
- A due date that falls on a bank holiday is not moved.
Privacy
Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.
Frequently asked questions
What are the advance tax due dates for 2026-27?
15 June 2026 (15%), 15 September 2026 (45%), 15 December 2026 (75%) and 15 March 2027 (100%). With presumptive business or professional income under section 58(2), the whole amount is due by 15 March 2027.
Do salaried people need to pay advance tax?
Only if the tax still due after the TDS on salary and on other income is ₹10,000 or more — for example because of rent, interest, capital gains or a side business. You can also give your employer details of other income so that more TDS is deducted instead.
Do senior citizens pay advance tax?
Not if they are resident, 60 or older at any time in the year, and have no income from business or profession (section 403(3); 207(2)). A senior citizen with business or professional income pays it like anyone else.
How is interest under section 234C (section 425) calculated?
On the shortfall at each due date: 3% of the shortfall against 15% (June), 45% (September) and 75% (December) of the tax, and 1% of the shortfall against 100% (March). Paying 12% by June and 36% by September avoids those two. The shortfall is rounded down to a multiple of ₹100.
How is interest under section 234B (section 424) calculated?
If your advance tax is less than 90% of the tax due, you pay 1% a month on the unpaid tax from 1 April after the year until you pay it — part of a month counts as a month. If ₹1,63,200 is unpaid on 1 April and you pay it on 31 July, the interest is 4% of ₹1,63,200 = ₹6,528.
I missed an instalment. What should I do?
Pay the shortfall as soon as you can, with the next instalment or before 31 March. Interest under section 425 for a missed instalment is a fixed 3% of its shortfall, so paying late does not add to it — but it shrinks the shortfall at the later due dates, and paying by 31 March can keep your advance tax at 90% or more and avoid interest under section 424.