Compare old and new regime tax for the published financial year — as an estimate, not as a filed return.
Indian income tax for salaried residents is a slab calculation plus rebate, surcharge, cess and (in the old regime) deductions. The “rate” people quote is usually the top slab they touch, not the average rate they actually pay.
Finaura’s income-tax tool is built for FY 2025-26 (AY 2026-27) using the slabs coded in the calculator. If a later Finance Act changes those slabs, the page date and the methodology section should be updated before anyone treats the output as current law.
Each tool shows the formula, assumptions and a short explanation. Numbers stay in your browser.
The new regime has wider slabs and a larger standard deduction, but almost no Chapter VI-A room. The old regime is narrower unless 80C, 80D, NPS, home-loan interest and HRA exemption are large enough to compensate. Enter real deduction amounts in the income tax calculator rather than the statutory ceilings you wish you used.
TDS is an employer withholding schedule. Annual tax is a year-end computation. Use the tax calculator for the annual picture and the in-hand salary calculator for a monthly illustration. Neither replaces a return.
Read the explanation, then run the matching calculator with your own numbers.