Advance Tax Calculator
Work out your advance tax instalments for FY 2026-27 after TDS, and estimate interest under sections 424 and 425 (old 234B and 234C) on any shortfall.
For unexpected capital gains or similar income, 234C relief may apply if tax is paid in remaining instalments. Review final facts before filing.
| Due Date | Required | Paid Cumulative | Shortfall | 234C |
|---|
Interest estimate uses the section 408 (old section 211) instalment percentages and 1% monthly interest assumptions. Presumptive taxpayers generally pay 100% by 15 March.
Advance tax due dates for FY 2026-27
Advance tax means paying income tax during the year as you earn, instead of in one go at the time of filing. Under section 408 of the Income-tax Act, 2025 (old section 211), it is paid in four instalments:
| Due date | Cumulative amount payable | Presumptive taxpayers |
|---|---|---|
| 15 June 2026 | At least 15% of advance tax | Nil |
| 15 September 2026 | At least 45% | Nil |
| 15 December 2026 | At least 75% | Nil |
| 15 March 2027 | 100% | 100% |
Anything paid by 31 March still counts as advance tax for the year. Pay through the e-Pay Tax service on the income tax e-filing portal and choose advance tax as the type of payment.
Who has to pay advance tax?
- Anyone whose tax for the year, after TDS and TCS, is ₹10,000 or more (section 404). This includes salaried people with large interest, rent or capital gains on which no tax is deducted.
- Not senior citizens without business income. A resident individual aged 60 or more at any time in the year, with no business or professional income, does not have to pay advance tax (section 403(3)).
- Presumptive taxpayers declaring income under section 58 (old sections 44AD and 44ADA) pay the whole amount in a single instalment by 15 March.
- Companies and firms pay advance tax on the same schedule as individuals.
Interest for late or short payment
Two kinds of interest apply, both simple interest at 1% a month or part of a month:
- Section 425 (old 234C) - deferment. Charged instalment by instalment when the cumulative amount paid falls short of the 15%, 45%, 75% or 100% target. Interest is 3% of the shortfall for the June, September and December instalments and 1% for March. There is no interest if you have paid at least 12% by 15 June and 36% by 15 September.
- Section 424 (old 234B) - default. Charged when the advance tax paid by 31 March is less than 90% of the assessed tax. Interest runs from 1 April of the next year until you pay, on the unpaid amount.
Example. Your tax after TDS for the year is ₹1,00,000 and you pay nothing until you file in July 2027. Deferment interest is ₹450 (June) + ₹1,350 (September) + ₹2,250 (December) + ₹1,000 (March) = ₹5,050. Default interest from April to July is 4 months x 1% x ₹1,00,000 = ₹4,000. Total interest: ₹9,050. Paying the full amount by 15 March instead would cost ₹4,050 under section 425 and nothing under section 424.
Capital gains, dividends and other unexpected income
You cannot be expected to pay advance tax on income you did not know about. No deferment interest is charged on the part of the shortfall caused by capital gains, dividends, first-year business income or certain other income, provided you pay the tax on it in the remaining instalments, or by 31 March if it arises after 15 March. Pay it in the very next instalment after the sale. The capital gains calculator works out the tax on a sale.
How to estimate your advance tax
- Estimate your total income for the year: salary, business profit, interest, rent and capital gains.
- Work out the tax under the regime you will choose using the income tax calculator, including surcharge and cess.
- Subtract TDS and TCS you expect for the year: on salary, bank interest, rent received and so on.
- If the balance is ₹10,000 or more, pay it by the four dates above. Enter the figures in this calculator to see each instalment and any interest on payments already made.
Revise the estimate before each due date. Income rarely matches the first guess, and topping up in the next instalment keeps interest low.
Related tax tools
- Income Tax Calculator - tax under the old and new regimes for FY 2026-27.
- Capital Gains Calculator - STCG and LTCG on shares, property, mutual funds and gold.
- Compliance Calendar - advance tax, TDS, GST and ROC due dates with reminders.
Frequently Asked Questions
15 June 2026 (15%), 15 September 2026 (45%), 15 December 2026 (75%) and 15 March 2027 (100%). The percentages are cumulative. Presumptive taxpayers pay 100% by 15 March 2027.
Any taxpayer whose tax for the year, after TDS and TCS, is ₹10,000 or more. Resident senior citizens (60 or above) with no business or professional income are exempt.
Only if tax on income outside salary is not covered by TDS and the balance is ₹10,000 or more, for example on capital gains, rent, interest or freelance income. The employer's TDS usually covers the salary itself.
Under the Income-tax Act, 2025 these are sections 424 and 425. Section 425 (234C) charges 1% a month on each instalment shortfall: 3% for the June, September and December instalments and 1% for March. Section 424 (234B) charges 1% a month from 1 April if less than 90% of the tax was paid as advance tax.
In one instalment of 100% by 15 March. These schemes are now in section 58 of the Income-tax Act, 2025. If paid late, interest of 1% applies on the shortfall at 15 March, plus default interest if less than 90% was paid by 31 March.
No, as long as you pay the tax on the gain in the remaining instalment by 15 March, or by 31 March if the sale was after 15 March. Shortfall caused by capital gains is excluded from deferment interest.
Pay as soon as possible. Interest is charged only on the shortfall and for the time it remains unpaid, so a late payment still reduces the interest compared with paying at the time of filing.