Advance Tax Calculator for FY 2026-27
Estimate your quarterly advance tax deposit schedule and avoid interest under Sections 424 and 425 of the Income-tax Act 2025 (old Sections 234B and 234C). Enter your expected income and the TDS already credited, and the calculator returns each instalment with its due date.
Expected income for FY 2026-27
Your instalment schedule
| Due date | Cumulative | Pay this time |
|---|---|---|
| 15 June 2026 | 15% | ₹1,992 |
| 15 September 2026 | 45% | ₹3,984 |
| 15 December 2026 | 75% | ₹3,984 |
| 15 March 2027 | 100% | ₹3,320 |
Advance tax paid so far is under 90% of the liability. Section 424 interest starts at roughly ₹133 per month from 1 April 2027 until the balance of ₹13,280 is cleared.
Estimates only. Capital gains entered here are taxed at slab rates; equity gains taxed at 20% or 12.5% are not covered.
How to use the advance tax calculator
Estimate your annual income
Add salary, business or professional income, rent, interest and capital gains you expect for the whole financial year.
Enter TDS already credited
Pull the figure from Form 26AS or the AIS. Advance tax applies only to the liability that TDS does not already cover.
Pay by each due date
Follow the instalment schedule shown. Paying the cumulative percentage on or before each date keeps Section 425 interest at zero.
Advance tax due dates and interest rules
| Due date | Cumulative advance tax | Interest if short |
|---|---|---|
| 15 June 2026 | 15% | 1% for 3 months (no charge if 12% paid) |
| 15 September 2026 | 45% | 1% for 3 months (no charge if 36% paid) |
| 15 December 2026 | 75% | 1% for 3 months |
| 15 March 2027 | 100% | 1% for 1 month |
Section 424 adds a further 1% per month from 1 April 2027 until payment, wherever total advance tax falls below 90% of the assessed liability. See the advance tax guide for the challan walk-through.
Advance tax FAQs
Who has to pay advance tax?+
Anyone whose total tax liability after TDS and TCS credit is Rs 10,000 or more in a financial year. Resident senior citizens aged 60 or above with no income from business or profession are exempt, however much they owe.
What are the advance tax due dates for FY 2026-27?+
15 June 2026 for 15% of the liability, 15 September 2026 for 45% cumulative, 15 December 2026 for 75% cumulative, and 15 March 2027 for the full 100%.
How is interest under Section 425 (old Section 234C) calculated?+
From FY 2026-27, Section 425 of the Income-tax Act 2025 charges 3% on the shortfall at each of the June, September and December dates, and 1% on the shortfall at the March date. No interest is charged at the June or September date if you have paid at least 12% or 36% of the tax due by then.
What is the difference between Section 424 and Section 425 interest?+
Section 425 (old Section 234C) penalises deferment within the year, instalment by instalment. Section 424 (old Section 234B) charges 1% for every month or part of a month from 1 April following the tax year, when advance tax paid is less than 90% of the assessed tax.
How does advance tax work under the presumptive scheme?+
Taxpayers declaring presumptive income under Section 58(2) of the Income-tax Act 2025 (Table Sl. No. 1 or 3, the old Sections 44AD and 44ADA) pay the whole liability in one instalment by 15 March under Section 408(2). The June, September and December dates do not apply to them.
Can I adjust TDS already deducted against advance tax?+
Yes. Advance tax is computed on the net liability after subtracting TDS, TCS and any foreign tax credit. Check Form 26AS and the AIS before you compute so nothing is double-counted.
Advance Tax Reminders and Challan Support
Tax Garden tracks every instalment date for you, computes the deposit from live books, and generates the challan ahead of each instalment date.