Advance Tax Calculator 2026-27
Advance tax instalments for 2026-27 and the interest for paying late or too little, under the Income-tax Act, 2025.
Result
Interest for late or short payment: ₹1,350.00Estimate
Presumptive-income taxpayers may pay all advance tax by 15 March. Shortfalls from unexpected capital gains or dividends can be excused if paid in later instalments.
- Interest for deferment (s.425)
- ₹1,350.00Estimate
- Interest for default (s.424)
- ₹0.00Estimate
- Due by 15 June
- ₹15,000.00Estimate
- Due in total by 15 September
- ₹45,000.00Estimate
- Due in total by 15 December
- ₹75,000.00Estimate
- Due in total by 15 March
- ₹1,00,000.00Estimate
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An estimate from the published rates for the tax year shown, for the situation described on this page. It is not a tax return or tax advice. Rules change with each budget, and your own circumstances can change the answer. Check it against your payslip and the tax authority’s own calculator, and confirm anything that matters with a qualified tax adviser. Read the full disclaimer
How to use the Advance Tax Calculator 2026-27
- Enter your estimated tax for 2026-27 after TDS and TCS.
- Enter how much you had paid in total by each due date, adding up the instalments as you go.
- Enter the number of months from April to the month you pay the rest, usually with your return.
- Read the interest for paying late or too little, and what was due by each date.
The instalments
The Income-tax Act, 2025 spreads the year’s tax over four dates. The amounts are cumulative, so by 15 September you should have paid 45% in total, not 45% more.
| Due by | Total paid |
|---|---|
| 15 June | 15% |
| 15 September | 45% |
| 15 December | 75% |
| 15 March | 100% |
Interest for deferment
For each date the page works out the shortfall: what was due less what you had paid, rounded down to ₹100. It charges 3% of the June, September and December shortfalls and 1% of the March one. June is skipped if you had paid 12% and September if you had paid 36%.
With ₹1,00,000 of tax, nothing paid in June, ₹30,000 by September, ₹60,000 by December and the full amount by March, the shortfalls are ₹15,000 each time to December. That is ₹450 three times, ₹1,350 in all.
Interest for default
If what you paid by 31 March is less than 90% of the tax, the unpaid tax, rounded down to ₹100, carries 1% a month from April. Pay it with a return in July and that is four months. With ₹50,000 of tax and nothing paid, that is ₹2,000 on top of ₹2,525 for deferment.
Limits
The page uses one figure for the year’s tax. Shortfalls caused by capital gains or dividends you could not foresee are excused if you pay in the next instalments; the page does not apply that relief. Interest is also charged on any tax still due after a reassessment, which is not covered.
With your numbers
- Deferment interest is 3% of each quarterly shortfall and 1% for March
- Default interest is 1% a month from April if less than 90% was paid by 31 March
Quick reference
Presumptive-income taxpayers may pay all advance tax by 15 March. Shortfalls from unexpected capital gains or dividends can be excused if paid in later instalments.
| Example | Interest for late or short payment |
|---|---|
| ₹1 lakh, late in June and September | ₹1,350.00 |
| ₹50,000, nothing paid | ₹4,525.00 |
| ₹2 lakh, all on time | ₹0.00 |
| ₹9,999 owed | |
| Senior citizen, pension only | |
| ₹5 lakh, half paid by March | ₹20,000.00 |
Where the numbers come from
The fixed figures this calculator relies on, and the published source each one was checked against. How the calculators are built and checked
3 sources
Income-tax Act, 2025 as amended by the Finance Act 2026, https://www.incometaxindia.gov.in/documents/d/guest/income_tax_act_2025_as_amended_by_fa_act_2026-pdf, ss.408, 424 and 425
Used for
- Advance tax due by 15 June: 15% of the year's tax.
- Advance tax due by 15 September: 45%.
- Advance tax due by 15 December: 75%.
- Advance tax due by 15 March: 100%.
- No interest for June if at least 12% is paid.
- No interest for September if at least 36% is paid.
- Deferment interest for a June, September or December shortfall: 3% of it.
- Deferment interest for a March shortfall: 1% of it.
- Default interest: 1% a month or part on the shortfall.
- Default interest applies when less than 90% of the tax was paid in advance.
Income-tax Act, 2025 as amended by the Finance Act 2026, https://www.incometaxindia.gov.in/documents/d/guest/income_tax_act_2025_as_amended_by_fa_act_2026-pdf, s.404
Used for
- Advance tax is due only when the year's tax is this or more.
Income-tax Rules, 2026, https://www.incometaxindia.gov.in/documents/d/guest/en-notified-it-rules-2026-20-03-2026-pdf, rule 269
Used for
- Interest is worked on amounts rounded down to a multiple of this.
Common questions about the Advance Tax Calculator 2026-27
- Who has to pay advance tax?
- Anyone whose tax for the year, after TDS and TCS, is ₹10,000 or more. Resident senior citizens aged 60 or over with no income from a business or profession are exempt.
- What are the due dates for 2026-27?
- At least 15% by 15 June 2026, 45% by 15 September, 75% by 15 December and the full amount by 15 March 2027. Those on presumptive income may pay all of it by 15 March.
- How is interest for late instalments worked out?
- Interest for deferment (old section 234C, now s.425) is 3% of the shortfall for each of the June, September and December instalments and 1% for March. No interest is charged if you had paid at least 12% by June or 36% by September.
- What if I paid less than 90% by 31 March?
- Interest for default (old section 234B, now s.424) applies: 1% a month on the unpaid tax, from April until the month you pay it. Part of a month counts as a whole month.
- Why does the page round down to ₹100?
- Rule 269 of the Income-tax Rules, 2026 says interest is worked on the shortfall rounded down to the nearest hundred rupees.