Taxation
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Income Tax Calculator
This income tax calculator (also a taxable income calculator) compares your tax outgo under the old and new regimes instantly. Adjust any input below and your results update instantly.
Your details
Adjust the inputs below and your results update instantly.
I'm a senior citizen (60+)
Raises the 80D and 80TTA/TTB caps below.
≈ ₹15.00 L
e.g. ₹15,00,000 a year
≈ ₹1.50 L
e.g. ₹1,50,000 fully utilised
e.g. ₹50,000 fully utilised
e.g. ₹60,000 a year
≈ ₹2.00 L
e.g. ₹2,00,000 fully utilised
e.g. ₹25,000 a year
e.g. ₹10,000 a year
e.g. ₹0 if not applicable
≈ ₹1.00 L
e.g. ₹1,00,000 combined
These are example numbers. Edit any input on the left to see your own.
The Old regime saves you
₹1,300
vs the New regime
Old regime tax
₹86,840
New regime tax
₹88,140
The Old regime is cheaper by ₹1,300 at these numbers.
Old regime vs. new regime, line by line
Every step from gross income down to final tax payable, for both regimes side by side.
Line itemOld regimeNew regimeStatus
Gross income₹15.00 L₹15.00 L
Same
100% of the higher amount
Standard deduction₹50,000₹75,000
Old lower
67% of the higher amount
Section 80C₹1.50 L₹0
New lower
0% of the higher amount
NPS: 80CCD(1B)₹50,000₹0
New lower
0% of the higher amount
Employer NPS: 80CCD(2)₹60,000₹60,000
Same
100% of the higher amount
Home loan interest: 24(b)₹2.00 L₹0
New lower
0% of the higher amount
Health insurance: 80D₹25,000₹0
New lower
0% of the higher amount
Savings/FD interest: 80TTA/TTB₹10,000₹0
New lower
0% of the higher amount
Education loan interest: 80E₹0₹0
Same
100% of the higher amount
Other deductions₹1.00 L₹0
New lower
0% of the higher amount
Taxable income₹8.55 L₹13.65 L
Old lower
63% of the higher amount
Tax before surcharge₹83,500₹84,750
Old lower
99% of the higher amount
Surcharge₹0₹0
Same
100% of the higher amount
Health & education cess (4%)₹3,340₹3,390
Old lower
99% of the higher amount
Total tax payable₹86,840₹88,140
Old lower
99% of the higher amount
Compare scenarios
See how maxing out Section 80C or earning more would change which regime wins.
Your plan
Old regime wins
₹1,300
Regime savings
Baseline
Max 80C
Old regime wins
₹1,300
Regime savings
No change
Income +₹1L
New regime wins
₹3,900
Regime savings
New regime now wins
Worked example, using your numbers
A step-by-step walkthrough of your tax under the Old regime.
Step 1 · Taxable income
After deductions, your taxable income under the Old regime is
₹8.55 L
Step 2 · Tax before surcharge
Applying the Old regime's slabs and any rebate gives
₹83,500
Step 3 · Final tax payable
Adding any surcharge, then 4% health & education cess, gives
₹86,840
✓
The Old regime saves you ₹1,300: ₹86,840 vs ₹88,140.
Personalised insights
What your numbers reveal, and what changing them would do.
The Old regime saves you ₹1,300
Old regime: ₹86,840 total tax. New regime: ₹88,140 total tax.
Your old-regime deductions total ₹6.45 L
That brings your taxable income down to ₹8.55 L under the old regime, versus ₹13.65 L under the new regime (which only allows the standard deduction plus your employer's NPS contribution).
You're already fully utilising Section 80C
Your ₹1.50 L contribution already claims the full ₹1,50,000 cap.
₹1,00,000 more income would change your savings to ₹3,900
A different regime comes out ahead at ₹16.00 L of gross income.
How this is calculated
Every step of the math behind your result, shown in the open.
Your taxable income
G = gross income, D = deductions (standard deduction, 80C, 80CCD(1B)/(2), 24(b), 80D, 80TTA/TTB, 80E and other deductions under the old regime; only the standard deduction and 80CCD(2) apply under the new), TI = taxable income
Your gross income (G) minus applicable deductions (D) gives the taxable income each regime's slabs are actually applied to. The new regime allows only the standard deduction and Section 80CCD(2) (employer's NPS contribution), far fewer than the old regime's full set.
Example: Old: ₹15.00 L − ₹6.45 L → ₹8.55 L taxable. New: ₹15.00 L − ₹1.35 L → ₹13.65 L taxable
Slab-wise tax before rebate
Tax = total tax before any Section 87A rebate
Each slice of your taxable income is taxed only at its own slab's rate; moving into a higher slab never raises the rate on the income you'd already earned within a lower one.
Example: Old: ₹8.55 L taxable → ₹83,500 tax. New: ₹13.65 L taxable → ₹84,750 tax
Surcharge on higher incomes
r_surcharge = 10% above ₹50L; 15% above ₹1Cr; 25% above ₹2Cr; 37% above ₹5Cr (old regime only)
Above ₹50 lakh of taxable income, a surcharge is added on top of your income tax itself: its own marginal relief caps the increase at each threshold to no more than the income that crossed it, the same way Section 87A does for the rebate.
Example: Old: ₹83,500 tax → ₹0 surcharge. New: ₹84,750 tax → ₹0 surcharge
Final tax payable
Rebate = Section 87A rebate (full relief below the threshold, marginal relief just above it), 1.04 = 4% Health & Education Cess
If your taxable income is at or below the rebate threshold, tax is fully waived. Otherwise, any applicable surcharge is added first, then a 4% cess on top of the combined tax and surcharge.
Example: Old: ₹83,500 + ₹0 surcharge + 4% cess → ₹86,840. New: ₹84,750 + ₹0 surcharge + 4% cess → ₹88,140
Assumptions
- The senior-citizen toggle only raises the 80D and 80TTA/TTB caps. It doesn't apply the old regime's higher basic exemption limit for senior (₹3L) or super senior (₹5L) citizens, which isn't modeled.
- Surcharge and its marginal relief are modeled at each threshold (₹50L, ₹1Cr, ₹2Cr, and ₹5Cr under the old regime) using the standard formula, so always confirm against a CA for amounts this large.
- Section 80CCD(2) is capped at a flat 10% of gross income as a proxy: the real cap is 10% (14% for central government employees) of basic salary specifically, which this calculator doesn't collect separately.
- Only income taxed at slab rates (salary and other regular income) is modeled. Capital gains, rental income, and business/professional income involve entirely different tax treatment and aren't included here: see the Capital Gains Tax Calculator for equity, debt, or property gains.
- HRA exemption, Section 80G donations, and any deduction not itemised above are combined into one "other deductions" input rather than computed from their own formulas.
- Figures are indicative and pre-tax-filing, not tax advice.
- Based on income tax slabs and rates notified for the current financial year, last reviewed July 2026.
Understanding old vs. new regime
The concept, the motivation, and what to watch out for.
Old regime or new regime: how do you actually choose?
India now runs two parallel income tax systems. The new regime has lower rates and a higher tax-free threshold, but doesn't allow most deductions. The old regime has higher rates, but lets you reduce your taxable income with Section 80C, HRA, home loan interest, and more.
There's no universal right answer. It depends entirely on how much you can actually claim under the old regime. This calculator runs both calculations side by side on your real numbers, so you can see exactly which one wins and by how much.
The new regime is now the default
Since FY 2023-24, the new regime applies automatically unless you actively choose the old regime when filing. Many taxpayers who'd benefit from the old regime miss out simply by not opting in.
Deductions only tip the scale one way
The more you can genuinely claim under Section 80C, HRA, and home loan interest, the more the old regime's higher rates get offset; without them, the new regime usually wins.
How this income tax calculator helps
Enter your income and old-regime deductions to see your tax under both regimes, side by side, with every slab and rebate shown.
Did you know?
A few facts behind the old vs. new regime choice.
Default
The new regime is now the default
Since FY 2023-24, you're automatically taxed under the new regime unless you specifically opt for the old one when filing, an easy thing to miss if the old regime actually suits you better.
12L
Many salaried taxpayers now pay zero tax
Between the ₹75,000 standard deduction and the ₹12,00,000 Section 87A rebate threshold, gross salary up to about ₹12.75 lakh can mean zero tax under the new regime.
Relief
Marginal relief smooths out the rebate cliff
Without it, earning even ₹1 more than the rebate threshold could trigger tax on your entire income: marginal relief caps the tax at just the amount you went over by.
80C
The old regime rewards documented deductions
The old regime only pays off if you can actually substantiate deductions: PPF and ELSS statements, rent receipts for HRA, home loan interest certificates, not just qualify for them on paper.
25%
The new regime caps surcharge lower than the old
Budget 2023 dropped the new regime's top surcharge slab, capping it at 25%; the old regime's surcharge still climbs to 37% for taxable income above ₹5 crore.
80CCD(2)
One old-regime-style deduction survives in the new regime
Nearly every Chapter VI-A deduction disappears under the new regime, except Section 80CCD(2), your employer's NPS contribution, which is still deductible in both.
Frequently asked questions
Straight answers to the questions we hear most about this income tax calculator's old vs. new regime comparison.
How does this calculator decide which regime is better?
It computes your full tax liability under both the old and new regimes (including standard deduction, applicable deductions, Section 87A rebate with marginal relief, and cess), then compares the two totals directly.
What's the real difference between the old and new regime?
The new regime offers lower slab rates and a higher tax-free threshold (via a bigger Section 87A rebate), but disallows most deductions like Section 80C, HRA, and home loan interest. The old regime has higher rates but lets those deductions reduce your taxable income first.
What is Section 87A rebate and marginal relief?
Section 87A fully waives your tax if taxable income is at or below a threshold (₹5,00,000 old regime, ₹12,00,000 new regime). Marginal relief then caps the tax just above that threshold, so crossing it by a small amount doesn't create a tax bill far larger than the amount you crossed by.
Can I claim Section 80C deductions under the new regime?
No. The new regime doesn't allow Section 80C, HRA, home loan interest (Section 24b), or most other common deductions. It offers a standard deduction and lower rates instead.
Which deductions does this calculator actually model?
Section 80C (₹1.5L), 80CCD(1B) additional NPS (₹50K), 80CCD(2) employer's NPS contribution (10% of salary), Section 24(b) home loan interest (₹2L), 80D health insurance (₹25K, or ₹50K for senior citizens), 80TTA/80TTB savings interest (₹10K, or ₹50K for senior citizens), and 80E education loan interest (uncapped), each with its own cap enforced separately, plus a combined "other deductions" field for HRA, Section 80G donations, and anything not itemised.
Is Section 80CCD(2) (employer's NPS contribution) really available under the new regime?
Yes. It's the one Chapter VI-A-style deduction the new regime still allows, alongside the standard deduction. Everyone else's deductions (80C, 80D, HRA, and the rest) only reduce tax under the old regime.
Does this calculator cover capital gains, rental income, or business income?
This calculator only computes tax on income taxed at slab rates: salary and other regular income. Capital gains on equity, debt, or property are taxed at flat special rates, not slab rates, and deserve their own calculation; use the dedicated Capital Gains Tax Calculator for those. Rental and business income involve their own deduction rules that aren't modeled here either.
Does this include surcharge for very high incomes?
Surcharge above ₹50 lakh of taxable income is included, stepping up further at ₹1 Cr and ₹2 Cr, and again at ₹5 Cr under the old regime only, with its own marginal relief so crossing a threshold never costs disproportionately more tax.
Why does the new regime cap surcharge at 25% while the old regime goes up to 37%?
Budget 2023 removed the top 37% surcharge slab for the new regime only, capping it at 25% instead, one reason the new regime can stay competitive even at very high incomes, on top of its lower slab rates.
Is this tax advice?
No. This tool provides indicative estimates based on your assumptions and the slabs in force at the time. Consult a chartered accountant or tax advisor before filing your return.
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Learn more
Articles to go deeper on the ideas behind this calculator.
Fundamentals
Old vs. new tax regime: how to actually choose
A practical framework, not just a slab-rate comparison.
7 min read
Fundamentals
Section 87A rebate and marginal relief, explained
How India's tax-free threshold actually works below the surface.
5 min read
Strategy
Deductions only available under the old regime
80C, HRA, home loan interest, and what each is actually worth.
6 min read
Compliance
Which income tax notice did you get? 142(1) vs 143(1) vs 143(2) vs 156
Start here if you're not sure which section applies to you, then read the full guide for yours.
5 min read