Estimate your income tax in India under the New or Old tax regime using the slabs and rebates in force from FY 2025-26. Enter your annual salary, choose a regime, and see the taxable income after the standard deduction, the tax, the 4% health and education cess, the total tax and your effective tax rate.
Simplified estimate for illustration only — not tax advice. Actual tax depends on deductions, exemptions, and the latest slabs notified by the Income Tax Department.
How to Use the Income Tax Calculator
Enter your gross annual salary in the "Annual Salary Income (₹)" field, before the standard deduction. Under the Old Regime, first subtract any other deductions you claim, such as 80C investments or HRA exemption.
Choose "New Regime" or "Old Regime" from the "Tax Regime" dropdown.
Click "Calculate Tax" to view your taxable income used, tax before cess, cess, total tax payable, and effective tax rate.
How Slab-Wise Tax Is Calculated
Indian income tax is progressive: income is cut into slabs and each slab is taxed only at its own rate. Moving into a higher slab does not raise the tax on the income below it. The calculator follows four steps:
It subtracts the standard deduction for salaried taxpayers: ₹75,000 under the New Regime or ₹50,000 under the Old Regime.
It applies the slab rates in the tables below to each portion of the remaining taxable income and adds them up.
It applies the rebate: tax is nil when taxable income is up to ₹12,00,000 under the New Regime or up to ₹5,00,000 under the Old Regime. Just above ₹12,00,000 in the New Regime, marginal relief caps the tax at the income earned above ₹12,00,000.
It adds 4% health and education cess and divides the total by your salary to give the effective tax rate.
Income Tax Slabs (from FY 2025-26)
Taxable income (New Regime, from FY 2025-26)
Rate
Up to ₹4,00,000
Nil
₹4,00,001 – ₹8,00,000
5%
₹8,00,001 – ₹12,00,000
10%
₹12,00,001 – ₹16,00,000
15%
₹16,00,001 – ₹20,00,000
20%
₹20,00,001 – ₹24,00,000
25%
Above ₹24,00,000
30%
Taxable income (Old Regime, below age 60)
Rate
Up to ₹2,50,000
Nil
₹2,50,001 – ₹5,00,000
5%
₹5,00,001 – ₹10,00,000
20%
Above ₹10,00,000
30%
Worked Examples
New Regime, salary ₹12,75,000: after the ₹75,000 standard deduction, taxable income is exactly ₹12,00,000. Slab tax is ₹60,000, but the rebate cancels all of it, so the tax payable is nil.
New Regime, salary ₹18,00,000: taxable income is ₹17,25,000. Tax is 5% of ₹4,00,000 (₹20,000) + 10% of ₹4,00,000 (₹40,000) + 15% of ₹4,00,000 (₹60,000) + 20% of ₹1,25,000 (₹25,000) = ₹1,45,000. Adding ₹5,800 cess gives ₹1,50,800, an effective rate of 8.38%.
Old Regime, salary ₹10,00,000 with no other deductions: taxable income is ₹9,50,000. Tax is 5% of ₹2,50,000 (₹12,500) + 20% of ₹4,50,000 (₹90,000) = ₹1,02,500. With ₹4,100 cess the total is ₹1,06,600, an effective rate of 10.66%.
Marginal relief, New Regime, salary ₹12,85,000: taxable income is ₹12,10,000 and slab tax would be ₹61,500. Because that is more than the ₹10,000 earned above ₹12,00,000, the tax is capped at ₹10,000, or ₹10,400 with cess.
What This Estimate Does Not Include
No higher basic exemption for senior citizens (60 and above) or super senior citizens (80 and above) under the Old Regime.
No surcharge, which applies when income exceeds ₹50 lakh, and no special rates on capital gains, which are taxed separately from slab income.
The standard deduction applies to salary and pension income. If your income is from business or other sources, the real tax will be slightly higher than shown here.
Slabs, rebates and deductions are set by each year's Finance Act. For the figure you will actually file, use the official tax calculator on the Income Tax Department's e-filing portal or consult a chartered accountant.
Choosing Between the Regimes
The New Regime is the default and has lower rates, but it allows very few deductions. The Old Regime has higher rates but lets you reduce taxable income through items such as HRA exemption, home loan interest, and investments and insurance premiums that qualify for deduction. A common way to decide is to total the deductions you would genuinely claim: the larger they are, the more likely the Old Regime is cheaper. Salaried taxpayers can generally pick the regime each year when filing their return.
Frequently Asked Questions
It subtracts the ₹75,000 standard deduction, then taxes each portion of the remaining income at its slab rate: nil up to ₹4,00,000, then 5%, 10%, 15%, 20% and 25% for each further ₹4,00,000, and 30% above ₹24,00,000. If taxable income is ₹12,00,000 or less, the rebate makes the tax nil, and just above that limit marginal relief applies.
Under the Old Regime the tool subtracts a ₹50,000 standard deduction and taxes the rest at nil up to ₹2,50,000, 5% up to ₹5,00,000, 20% up to ₹10,00,000 and 30% above that. Tax is nil if taxable income is ₹5,00,000 or less. Subtract any other deductions you claim, such as 80C or HRA exemption, before entering your salary.
After computing the tax based on the applicable slabs, the calculator adds a 4% Health and Education Cess on top of that amount to arrive at your Total Tax Payable, matching how cess is applied to slab-based tax in India.
No, this is a simplified, free estimate for illustration only and not tax advice. Your actual liability depends on deductions, exemptions, and the latest slabs notified by the Income Tax Department, so consult a tax professional or the official e-filing portal before filing.
The slab rate, or marginal rate, is the rate on your last rupee of income. The effective rate is total tax divided by total income, and it is always lower because the lower slabs are taxed at lower rates. In the ₹18,00,000 New Regime example on this page the top slab is 20%, but the effective rate is 8.38%.