How the tax is calculated (published FY 2025-26 (AY 2026-27) rules)
- Standard deduction: ₹75,000 (new regime) or ₹50,000 (old regime) comes off the gross salary.
- Other deductions (old regime only): 80C, 80D, HRA exemption and the like.
- Slab tax on what remains — the taxable income.
- Section 87A rebate: up to ₹60,000 when taxable income is ≤ ₹12,00,000 (new), or up to ₹12,500 when ≤ ₹5,00,000 (old). Just above ₹12,00,000 the new regime’s marginal relief limits the tax to the income above that line.
- Surcharge above ₹50 lakh (with marginal relief), then 4% health and education cess on the tax plus surcharge.
New regime slabs (FY 2025-26 (AY 2026-27))
| Taxable income | Rate |
|---|---|
| ₹0 – ₹4,00,000 | 0% |
| ₹4,00,000 – ₹8,00,000 | 5% |
| ₹8,00,000 – ₹12,00,000 | 10% |
| ₹12,00,000 – ₹16,00,000 | 15% |
| ₹16,00,000 – ₹20,00,000 | 20% |
| ₹20,00,000 – ₹24,00,000 | 25% |
| Above ₹24,00,000 | 30% |
The same slabs apply at every age under the new regime. Under the old regime the tax-free limit is ₹2,50,000 below 60, ₹3,00,000 from 60 to 79 and ₹5,00,000 from 80, followed by 5%, 20% and 30% bands.
Examples
₹13,00,000 salary, new regime. Taxable income is ₹12,25,000. Slab tax is ₹63,750, but marginal relief caps it at ₹25,000 (the amount above ₹12 lakh). With 4% cess the tax is ₹26,000.
₹10,00,000 salary, old regime, ₹1,50,000 of deductions. Taxable income is ₹8,00,000; tax is ₹12,500 + 20% of ₹3,00,000 = ₹72,500, plus cess = ₹75,400. The new regime on the same salary is ₹0 — taxable ₹9,25,000 is under the rebate limit.
What it does not cover
Resident individual with salary income only. Capital gains and other incomes taxed at special rates, HUFs, firms and non-residents are not covered. HRA, LTA and perquisite rules are not modelled — put the exempt amount into the deductions box. Monthly take-home here is salary minus income tax only; your payslip also deducts provident fund, professional tax and other items.
Using it for another tax year
Indian income tax rules are set by each year's Finance Act, so slabs, the rebate limit and the standard deduction can change every February. This page does not claim the values above are the rules for every year. Open Tax rules above the Calculate button, type in the figures for your year, and every result and step on the page follows them. The engine itself — slabs, rebate with marginal relief, surcharge with marginal relief, cess — stays the same.