Advance Tax Calculator 2026 — Due Dates & 234B/234C Interest
If your tax for the year (after TDS) exceeds ₹10,000, you're expected to pay it in instalments through the year — not in one lump at filing. Miss the schedule and interest follows.
Quick Answer
Advance tax is payable in four instalments if your net tax liability for the year exceeds ₹10,000. The due dates are 15 June (15%), 15 September (45% cumulative), 15 December (75%), and 15 March (100%). Underpaying triggers interest under Section 234C (per missed instalment) and 234B (if under 90% is paid by year-end). A calculator schedules each instalment for you.
✓Key Takeaways
- Applies when net tax after TDS is over ₹10,000 in the year.
- Instalments: 15% by 15 Jun, 45% by 15 Sep, 75% by 15 Dec, 100% by 15 Mar.
- Senior citizens with no business income are exempt from advance tax.
- Underpayment → 1% per month interest under 234B/234C.
The four instalments
| Due date | Cumulative advance tax payable |
|---|---|
| 15 June | 15% |
| 15 September | 45% |
| 15 December | 75% |
| 15 March | 100% |
Those under the presumptive scheme (44AD/44ADA) pay the entire amount in a single instalment by 15 March.
Who must pay
- Salaried individuals with significant non-salary income (interest, capital gains, rent, freelancing) where TDS doesn't cover the liability.
- Freelancers, professionals, and businesses.
- Anyone whose net tax after TDS exceeds ₹10,000.
Exempt: resident senior citizens (60+) with no business or professional income.
How the interest works
- 234C: 1% per month for short payment of each instalment (3 months for the first three, 1 month for the last).
- 234B: 1% per month from April until you pay, if advance tax paid is under 90% of the total.
How the calculator helps
- Enter your estimated annual income and deductions.
- Subtract expected TDS.
- The tool computes the total tax and splits it into the four instalments with dates.
- It flags any 234B/234C interest already accruing if you're behind.
Frequently Asked Questions
What if my income changes mid-year?
Re-estimate at each instalment. A calculator lets you revise income so later instalments true-up the year's tax.
Can I pay advance tax in one go?
You can, but paying the scheduled percentages by each due date is what avoids 234C interest.
How do I pay it?
Through the e-Pay Tax service on the income tax portal, selecting "Advance Tax" as the type of payment.
Plan your instalments with our advance tax calculator, or let us manage your filing and payments.
Related Tools & Services
You Might Also Like
Income Tax Calculator 2026 — Old vs New Regime Explained
How to use an income tax calculator to compare the old and new regimes for FY 2026-27. Slabs, the Section 87A rebate, standard deduction, and when each regime wins.
HRA Exemption Calculator 2026 — Formula with Worked Example
How the HRA exemption is calculated under Section 10(13A) in 2026 — the three-part formula, a full worked example, metro vs non-metro, and proofs you need.
Capital Gains Calculator 2026 — LTCG & STCG Rates Made Simple
How to calculate capital gains in 2026 after the July 2024 changes — 12.5% LTCG, 20% STCG on equity, the ₹1.25 lakh exemption, and property indexation choice.
Need help filing?
I handle everything via WhatsApp — documents to acknowledgement in 24–48 hours.
Chat on WhatsApp →