Advance Tax Calculator: Instalments and Interest, TY 2026-27
Enter your estimated income and TDS, and see whether the ₹10,000 rule catches you, what to pay by each of the four dates, and what missing one costs in interest.
Your advance tax for TY 2026-27 is
₹2,92,500
The instalment calendar
| Pay by | Of total | Cumulative | This instalment | Status |
|---|---|---|---|---|
| 15 June 2026 | 15% | ₹43,875 | ₹43,875 | |
| 15 September 2026 | 45% | ₹1,31,625 | ₹87,750 | |
| 15 December 2026 | 75% | ₹2,19,375 | ₹87,750 | |
| 15 March 2027 | 100% | ₹2,92,500 | ₹73,125 |
Behind schedule? Interest under the old 234C (an estimate)
† Estimate only, pending CA verification. The exact 234C computation depends on your actual payment dates and amounts, rounds figures to multiples of ₹100, and treats capital gains and other windfalls specially; tax on those is only due in the instalments after the gain arises.
Uses the TY 2026-27 slab sets under the Income-tax Act 2025, covering slab-rate income only; capital gains taxed at special rates aren't modelled. See every assumption. Not sure of the annual tax figure itself? Work it out with the income tax calculator.
How advance tax works
Who must pay: Anyone whose tax for the year, after the TDS others deduct for them, comes to ₹10,000 or more. That is the pay-as-you-earn rule that lived in Sections 207–208 of the old Act. Salary earners usually escape because employer TDS soaks up the bill; freelancers, landlords, F&O traders and anyone with large interest or dividend income usually don't. Resident senior citizens with no business income are exempt entirely, whatever they owe.
The four dates: 15 June, 15 September, 15 December and 15 March, with cumulative targets of 15%, 45%, 75% and 100% of the year's estimated tax. Cumulative is the word that matters: by 15 September you should have paid 45% in total, not 45% on top of June. Re-estimate at each date as the year firms up; the schedule forgives honest revisions, not neglect.
The presumptive one-shot: On the presumptive scheme (the old 44AD/44ADA, for small businesses and professionals declaring a fixed percentage of turnover as profit), the four dates collapse into one: pay 100% by 15 March. Miss it and interest runs at 1% for the one month.
234C (interest inside the year): Short-pay an instalment and simple interest runs at 1% a month on the shortfall, charged for three months per quarterly instalment and one month for March. It locks in the moment a due date passes and doesn't shrink if you pay the next day. Two cushions soften it: no interest if you'd paid at least 12% by June or 36% by September, and gains you couldn't predict only enter the schedule after they arise.
234B (interest after the year): A separate meter that starts where 234C stops. If by 31 March you've paid less than 90% of your final liability (advance tax plus TDS combined), interest runs at 1% a month on the unpaid amount from 1 April until the day you actually pay. Both can apply in the same year: 234C for the missed instalments, then 234B for carrying the shortfall past year-end.
This calculator assumes:
- All your income is taxed at slab rates. Capital gains and other special-rate income aren't modelled; they change both the tax and the schedule (see the FAQ below).
- You're a resident individual (old-regime figures use the below-60 slabs), not on the presumptive scheme, and not a senior citizen exempt from advance tax.
- The TDS you enter is the expected full-year figure, and your income estimate holds for the year.
- The interest estimate assumes nothing paid so far, skips the ₹100 rounding rule and ignores the 12%/36% safe harbours. With nothing paid, those can't help anyway.
- Tax is computed on the TY 2026-27 slab sets under the Income-tax Act 2025 with rebate, surcharge, marginal relief and cess, verified 1 July 2026.
Advance tax FAQs
My employer deducts TDS from my salary. Does that cover advance tax?
For pure salary, yes: employer TDS is designed to soak up the whole liability, which is why most salaried people never think about the instalment calendar. It stops covering you the moment other income appears: capital gains, F&O profits, bank interest, rent. If your tax after all TDS comes to ₹10,000 or more, the calendar applies. The low-effort fix for salaried people: declare the extra income to your employer and let them deduct more TDS, which counts against your liability without any date-watching.
What happens if I miss the 15 September instalment?
The interest locks in the moment the date passes: 1% a month for three months on your shortfall against the 45% target. It's the same whether you pay on 16 September or in December, so paying a day late buys you nothing on that instalment. What still matters is the next date: catch up to 75% by 15 December and no fresh interest is added there. One cushion: if you had already paid at least 36% by 15 September, there's no interest for that instalment at all (the June equivalent is 12%).
Do capital gains change the schedule?
Yes. The law doesn't expect you to predict a gain, so you pay the tax on it in the instalments that fall after the gain arises. Sell shares in January and the tax on that gain simply joins your 15 March instalment, with no interest for the June, September or December instalments you 'missed'. Miss the first date after the gain, though, and interest starts as usual. This calculator spreads everything evenly, so if a big gain lands mid-year your real schedule will be lighter early and heavier late.
Is advance-tax interest a penalty?
No. 234B and 234C are compensatory interest, not fines. The government charges 1% a month for holding money it was due earlier; it's applied automatically when you file, with no discretion, no waiver in the normal course, and nothing on your record. That cuts both ways: there's nothing to appeal, but nothing to fear beyond the money. It isn't tax-deductible either, so treat it as a 12%-a-year loan you never asked for, one usually worth avoiding.