Income Tax Calculator
Calculate your income tax liability for FY 2026-27 under either the new or old tax regime, including standard deduction, Section 87A rebate, and health & education cess.
- Free to use
- No registration required
- Works on all devices
- Last updated
- 17-09-2026
Your result
₹0
Total tax payable
AI explanation
Formula
Tax = slab-wise tax on taxable income, less Section 87A rebate (if eligible), plus 4% health & education cessWorked examples
₹15,00,000 gross income, New Regime
| Field | Value |
|---|---|
| Gross annual income | ₹15,00,000 |
| Tax regime | new |
| Deductions (Section 80C, etc. — old regime only) | ₹0 |
| Taxable income | ₹14,25,000 |
| Total tax payable | ₹97,500 |
₹12,00,000 gross income, Old Regime, full ₹1,50,000 Section 80C deduction
| Field | Value |
|---|---|
| Gross annual income | ₹12,00,000 |
| Tax regime | old |
| Deductions (Section 80C, etc. — old regime only) | ₹1,50,000 |
| Taxable income | ₹10,00,000 |
| Total tax payable | ₹1,17,000 |
At the ₹12,00,000 rebate threshold, New Regime (taxable income exactly ₹12,00,000)
| Field | Value |
|---|---|
| Gross annual income | ₹12,75,000 |
| Tax regime | new |
| Deductions (Section 80C, etc. — old regime only) | ₹0 |
| Taxable income | ₹12,00,000 |
| Total tax payable | ₹0 |
Marginal relief just above the threshold: ₹12,85,000 gross, New Regime (taxable income ₹12,10,000)
| Field | Value |
|---|---|
| Gross annual income | ₹12,85,000 |
| Tax regime | new |
| Deductions (Section 80C, etc. — old regime only) | ₹0 |
| Taxable income | ₹12,10,000 |
| Total tax payable | ₹10,400 |
₹30,00,000 gross income, New Regime
| Field | Value |
|---|---|
| Gross annual income | ₹30,00,000 |
| Tax regime | new |
| Deductions (Section 80C, etc. — old regime only) | ₹0 |
| Taxable income | ₹29,25,000 |
| Total tax payable | ₹4,75,800 |
Assumptions
- Applies to individuals below 60 years of age (no senior/super-senior citizen slabs).
- New regime standard deduction ₹75,000; old regime standard deduction ₹50,000.
- Surcharge (applicable above ₹50 lakh taxable income) is not included in this calculation.
- Old regime models only a single Section 80C-style deduction input, not HRA, 80D, or other individual sections.
Frequently asked questions
What is the Section 87A rebate?
Section 87A gives a full tax rebate (making net tax zero) if your taxable income is at or below a threshold — ₹12,00,000 under the new regime (rebate up to ₹60,000) or ₹5,00,000 under the old regime (rebate up to ₹12,500) for FY 2026-27.
What happens if my taxable income is just ₹1 above the rebate threshold?
Under the new regime, Section 87A includes marginal relief specifically for this case, so it is not a cliff. At exactly ₹12,00,000 taxable income, tax is ₹0 (the ₹60,000 slab tax is fully rebated). At ₹12,00,001, marginal relief caps the tax at the amount by which income exceeds ₹12,00,000 — just ₹1, plus 4% cess, for a total of about ₹1.04 — not the full slab tax. This tapers off gradually: at ₹12,10,000 taxable income, tax is capped at ₹10,000 (the exact excess over ₹12,00,000) instead of the ₹61,500 slab tax would otherwise produce. Marginal relief keeps applying until slab tax on the full income falls back below the excess over ₹12,00,000 (around ₹12,70,588 taxable income for FY 2026-27), after which normal slab tax applies with no rebate at all. The old regime's ₹5,00,000 rebate threshold has no such relief — there, losing the rebate genuinely is an all-or-nothing cliff.
Which regime should I choose?
The new regime generally benefits taxpayers with fewer deductions; the old regime can be better if you claim substantial deductions (80C, HRA, home loan interest, etc.). Use the Old vs New Regime Comparison Calculator to compare both for your exact numbers.
Why does the same ₹12,00,000 gross income give ₹0 tax under the new regime but ₹1,63,800 under the old regime?
The new regime's higher ₹75,000 standard deduction and ₹12,00,000 rebate threshold together wipe out tax on this income entirely. The old regime's lower ₹50,000 standard deduction (and no 80C deduction entered in this comparison) leaves a taxable income of ₹11,50,000 — well above the old regime's ₹5,00,000 rebate threshold — so full slab tax plus cess applies. Entering old-regime deductions (80C, etc.) would lower this gap, which is exactly what the Old vs New Regime Comparison Calculator is for.
Is the 4% cess applied before or after the Section 87A rebate?
After. The calculation order is slab tax, then rebate (if eligible), then 4% cess on whatever tax remains after the rebate — so a taxpayer who qualifies for the full rebate pays no cess either, since cess is 4% of zero.
Does this apply to senior citizens?
No — this calculator applies the standard slabs for individuals below 60. Senior citizens (60-79) and super senior citizens (80+) have separate, more favorable exemption limits under the old regime, which aren't modeled here.
What's the difference between a financial year (FY) and assessment year (AY)?
The financial year (FY 2026-27, 1 April 2026 to 31 March 2027) is the year the income is actually earned. The assessment year (AY 2027-28) is the following year in which that income is assessed and tax is filed — this calculator's slabs apply to income earned during FY 2026-27, filed in AY 2027-28.
Did Union Budget 2026 change the tax slabs?
No — the Union Budget presented in February 2026 did not change the income tax slabs or basic exemption limits for FY 2026-27; they remain the same as FY 2025-26.
Related calculators
Related articles
Sources
Official sources
- What is rebate under section 87A for F.Y 2025-26 and who can claim it? (official FAQ, incl. marginal relief) — Income Tax Department (CBDT), Ministry of Finance, Government of India. Effective 01-04-2025, checked 17-09-2026.
Further reading
- Income Tax Slabs and Rates for FY 2026-27 (AY 2027-28) — Income Tax Department, Government of India. Effective 01-04-2026, checked 17-09-2026.
This calculator applies the individual income tax slabs, standard deduction, and Section 87A rebate for FY 2026-27 (AY 2027-28) as notified up to the date shown below. It does not include surcharge, and does not constitute tax advice — consult a qualified tax professional for your specific situation.
Report a calculation issue