Advance tax calculator for FY 2026-27
If your tax after TDS will exceed ₹10,000 for the year, you are meant to pay it in four instalments rather than all at the end. This works out what each one should be, and what it costs if you are late.
Your figures
Enter your expected tax for the whole year after subtracting TDS already deducted, then what you have actually paid by each date.
What you have actually paid
The four dates
The percentages are cumulative, not separate. By 15 September you should have paid 45% in total, not 45% on top of the June payment.
| Due by | Cumulative | On ₹1,00,000 of tax | Instalment |
|---|---|---|---|
| 15 June 2026 | 15% | ₹15,000 | ₹15,000 |
| 15 September 2026 | 45% | ₹45,000 | ₹30,000 |
| 15 December 2026 | 75% | ₹75,000 | ₹30,000 |
| 15 March 2027 | 100% | ₹1,00,000 | ₹25,000 |
The 12% and 36% safe harbours
Section 234C charges interest when an instalment falls short. But it does not charge you for the first instalment if you have paid at least 12% — even though 15% was due. Nor for the second if you have paid at least 36%, even though 45% was due.
The concession exists because nobody can forecast a full year's income accurately in June. It only applies to the first two instalments; the third and fourth must be met in full. This calculator applies it. A good many others do not, and tell you that you owe interest when you do not.
234B and 234C are different charges
Section 234C is for deferment — paying an instalment late or short. It runs at 1% per month for three months on each of the first three shortfalls, and one month on the last.
Section 234B is for default — reaching the end of the year having paid less than 90% of your total tax through advance tax and TDS combined. It runs at 1% per month from 1 April until you pay.
They can both apply to the same year. Clearing the 90% mark by 31 March avoids 234B entirely, which is why a catch-up payment in March is worth making even when the earlier instalments were missed.
Who does not have to pay advance tax
A resident senior citizen aged 60 or above with no business or professional income is exempt from advance tax altogether — they can pay at the end. The exemption falls away the moment there is business income, which catches retired people who consult on the side.
We review this for every business and freelance client
Your advance tax position for the year ahead is checked as part of the return, so the next 15 June does not come as a surprise.
- Instalment dates and cumulative percentages, the ₹10,000 threshold, and the senior-citizen exemption — verified 1 September 2026.
- Interest at 1% per month under the provisions formerly numbered 234B and 234C, renumbered by the Income-tax Act, 2025. We give the familiar numbers because that is what appears on notices and what people search for.