Income Tax Calculator
Estimate your income tax under the New or Old Regime using official slab rates.
Last updated 27/07/2026
Calculator
Income Tax Calculator inputs
Enter your taxable income.
Stored only in this browser — never uploaded, no account required.
Manage My Service DetailsHow this works
What it means
An estimate of your income tax liability for a given financial year, based on the officially published slab rates for the New or Old Tax Regime.
How it’s calculated
Your taxable income is taxed progressively — each slab's rate applies only to the portion of income within that slab, not the whole amount. A 4% Health and Education Cess is added on top. If your taxable income is at or below the Section 87A rebate threshold for your regime and year, your tax is fully rebated to zero.
Common Defence use cases
Comparing New Regime vs Old Regime tax at the same taxable income, checking how tax changes across financial years as slabs are revised, and sanity-checking a figure from a payslip or tax software.
Formula
Slab Tax = Σ (portion of Taxable Income in each slab × that slab's rate)
if Taxable Income ≤ Section 87A rebate threshold: Slab Tax = 0
Cess = Slab Tax × 4%
Estimated Income Tax = Slab Tax + CessAssumptions
- This is a simplified, illustrative estimate only — not a substitute for filing advice. Always verify with a tax advisor or the Income Tax Department before filing.
- Only financial years with officially published slab rates are listed (FY 2023-24 through FY 2025-26). If your financial year isn't listed, slab rates may have changed — check the latest official notification.
- "Taxable Income" is assumed to already be net of whatever deductions and exemptions apply under your selected regime — this calculator does not calculate or apply deductions (e.g. Section 80C, 80D, HRA) itself.
- Does not calculate surcharge, which applies to taxable income above ₹50 lakh and has its own marginal-relief rules — Version 1 excludes it rather than risk an incorrect partial implementation.
- Applies the same Old Regime slabs regardless of age — senior and super-senior citizen slabs are not modeled.
- Applies the Section 87A rebate as a simple threshold (zero tax at or below the limit, full slab tax above it) without modeling marginal relief for incomes just above the threshold.
Example calculations
New Regime, FY 2025-26, taxable income ₹12,00,000
Fully rebated under Section 87A — estimated tax ₹0
New Regime, FY 2025-26, taxable income ₹18,00,000
Estimated tax ₹1,66,400 — effective rate 9.2%
Old Regime, any listed year, taxable income ₹8,00,000
Estimated tax ₹75,400 — effective rate 9.4%