Enter your income and the deductions you actually claim, and compare the tax payable under both regimes to see which one leaves you better off.
The old regime applies higher slab rates but allows deductions such as 80C, HRA, home loan interest, and health insurance. The new regime offers lower slab rates and a higher standard deduction but removes most exemptions. The calculator computes tax under both on the same income and shows the difference.
It depends almost entirely on how much you actually claim in deductions. If you have significant HRA, a home loan, and a filled 80C, the old regime often wins. If you claim little beyond the standard deduction, the new regime's lower rates usually do. There is no universally better answer — the comparison has to be run on your own numbers.
Salaried taxpayers without business income can choose afresh each financial year when filing. Those with business income have far more restricted switching, generally a one-time move back to the old regime.
The new regime is now the default. If you want the old regime you must actively opt for it — otherwise you will be taxed under the new one regardless of what deductions you could have claimed.
This calculator is for information only and is not investment, tax, or financial advice. Figures are estimates based on the assumptions you enter and are not a guarantee of future returns. Consult a SEBI-registered adviser or a qualified tax professional before acting.