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The new tax regime calculator India taxpayers rely on has become indispensable since the regime was made the default option. Enter your income, see the tax under revised slabs, and compare it against what you would pay under the old regime. What used to take an afternoon of spreadsheet work now takes seconds. But the calculator is only as good as your understanding of what goes into it. This guide walks through the slabs, the deductions that still survive, the rebate that makes ₹12 lakh effectively tax-free, and the break-even point where switching regimes actually pays off.
The slab structure announced in Budget 2025 and carried forward into the new Income Tax Act, 2025, follows a graduated progression designed to reduce the tax burden on middle-income earners. The basic exemption limit under the new regime stands at ₹4 lakh, up from ₹3 lakh previously.
| Annual Income Range | Tax 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% |
These rates apply to the total income after all permissible deductions. The progression is deliberately gentler than the old regime, where the jump from 5% to 20% at ₹5 lakh created a steep effective marginal rate for middle-income taxpayers. Under the new structure, a taxpayer earning ₹12 lakh pays nothing after the Section 87A rebate, and someone earning ₹15 lakh pays tax only on the portion above the rebate threshold.
Two provisions do most of the heavy lifting in making the new regime attractive for salaried individuals.
Standard deduction. Salaried employees and pensioners can claim a flat deduction of ₹75,000 from gross salary income. No receipts, no investment proofs, no documentation. This is an automatic reduction that applies at the payroll level or when filing the income tax return. Under the old regime, the same deduction was capped at ₹50,000.
Section 87A rebate. If your taxable income is ₹12 lakh or less, the rebate under Section 87A fully offsets your tax liability. The maximum rebate amount is ₹60,000. Combined with the standard deduction, a salaried taxpayer with a gross salary of up to ₹12.75 lakh owes zero income tax under the new regime. For non-salaried taxpayers, the effective tax-free threshold is ₹12 lakh.[reference:0]
The common misconception is that the new regime offers no deductions at all. That is not accurate. Several deductions remain, though the list is shorter than under the old regime.
What is gone: Section 80C investments (PPF, ELSS, life insurance premiums, principal repayment on home loan), Section 80D health insurance premiums, HRA exemption, LTA, and the self-occupied home loan interest deduction. If your tax planning revolves around these, the old regime may still work better for you.
The question that matters is not which regime is "better" in the abstract. It is which one costs you less tax given your actual income and deductions. A free income tax calculator can run both scenarios side by side, but the logic is straightforward enough to work through manually.
Under the old regime, a salaried taxpayer earning ₹10 lakh with ₹1.5 lakh in Section 80C investments, ₹25,000 in Section 80D premiums, and ₹1.2 lakh HRA exemption would have a taxable income of roughly ₹6.55 lakh after the ₹50,000 standard deduction. Tax liability would be around ₹82,500 before cess. Under the new regime, the same taxpayer gets the ₹75,000 standard deduction, leaving ₹9.25 lakh taxable. Tax liability works out to ₹46,250. The new regime saves over ₹36,000.
Reverse the scenario. A taxpayer earning ₹20 lakh with ₹2 lakh in home loan interest on a self-occupied property, ₹1.5 lakh under 80C, ₹50,000 under 80D, and ₹2.4 lakh HRA exemption would have taxable income of about ₹13.6 lakh under the old regime. Tax liability would be in the range of ₹2.4 lakh. Under the new regime, taxable income after standard deduction is ₹19.25 lakh, and tax liability is approximately ₹2.8 lakh. Here the old regime wins.
The break-even point for a salaried taxpayer with no business income generally falls around ₹8 lakh to ₹10 lakh of deductions. Below that, the new regime's lower rates and higher rebate tend to win. Above it, the old regime's deduction menu can still deliver savings.[reference:5]
A reliable new tax regime calculator India taxpayers can trust does several things at once. It applies the correct slab rates, subtracts the standard deduction, calculates the Section 87A rebate where applicable, adds health and education cess at 4%, and computes marginal relief for incomes just above the rebate threshold.
The inputs are simple: gross salary or total income, deductions you intend to claim, and the assessment year. The output should show tax under both regimes, the difference, and a clear indication of which regime saves you more. If the calculator does not show the comparison, it is only doing half the job.
For salaried employees, the calculator should also account for professional tax, if applicable in your state, and any exemptions on allowances that remain available under the new regime — tour allowances, daily allowances for outstation work, and conveyance reimbursement for official duty.[reference:6]
Marginal relief prevents a strange outcome: earning slightly more than ₹12 lakh and suddenly owing more tax than the additional income. Without relief, a taxpayer earning ₹12,10,000 might face a tax liability that exceeds ₹10,000, leaving them worse off than someone earning exactly ₹12 lakh.
Marginal relief caps the tax at the amount by which income exceeds ₹12 lakh. So if your income is ₹12,10,000, your tax cannot exceed ₹10,000 (plus cess on that amount). This relief applies at higher thresholds as well — ₹50 lakh, ₹1 crore, ₹2 crore, and ₹5 crore — where surcharge would otherwise create a similar cliff.[reference:7]
The new regime suits taxpayers who:
The old regime still makes sense for those with substantial deductions: high HRA claims, large home loan interest, significant Section 80C and 80D investments, or NPS contributions under Section 80CCD(1). The decision is numerical, not ideological.
For a salaried employee with ₹10 lakh gross salary and minimal investments, the new tax regime is usually better. After the ₹75,000 standard deduction, taxable income becomes ₹9.25 lakh. Tax liability works out to ₹46,250 plus cess. Under the old regime, you would need deductions exceeding roughly ₹2.75 lakh to match this benefit.
Salaried taxpayers without business income can switch between regimes every year at the time of filing ITR. However, taxpayers with business or professional income can switch only once during their lifetime, and the chosen regime must be continued thereafter.
No. The new tax regime is the default option, but it is not mandatory. Taxpayers can still opt for the old tax regime if they have substantial deductions under Sections 80C, 80D, HRA, and home loan interest. The choice remains with the taxpayer.
Marginal relief ensures that the tax payable does not exceed the income exceeding the rebate threshold. For income just above ₹12 lakh, the tax is capped so that you do not end up paying more tax than the additional income earned above ₹12 lakh.
No. House Rent Allowance exemption under Section 10(13A) is not available under the new tax regime. Salaried employees who receive HRA and pay significant rent may find the old regime more beneficial if their total deductions are high enough.
The new tax regime calculator India offers is not just a convenience tool — it is a decision-making instrument. With the default regime now covering the majority of salaried taxpayers, understanding exactly how the slabs interact with the standard deduction and the Section 87A rebate is essential to ensuring you do not overpay. Run the numbers for both regimes, check the break-even against your actual deduction profile, and make the choice that leaves more money in your pocket. The tax code gives you the option; the calculator helps you exercise it intelligently.