Every salaried person in India faces the same yearly question: which tax regime should I choose? Since the new regime arrived alongside the old, the answer depends on your income and the deductions you claim. Choosing wrong can cost you thousands. This guide explains both regimes and gives you a clear way to decide.
How income tax works
Income tax is charged in slabs: different portions of your income are taxed at increasing rates. Crucially, you do not pay your top rate on all your income — only on the part that falls within each band. So someone in the '30% bracket' pays 30% only on the income above the threshold, not on their whole salary. This is why a raise never leaves you worse off overall. The income tax calculator applies the slabs for you and shows your total tax.
The old regime: deductions and exemptions
The old regime has higher slab rates but lets you reduce your taxable income with a long list of deductions and exemptions: investments under Section 80C (such as PPF, ELSS and life insurance premiums), health insurance under 80D, home-loan interest, the National Pension System, and exemptions like House Rent Allowance (HRA) and Leave Travel Allowance. If you genuinely claim several of these, your taxable income drops sharply and the old regime can work out cheaper. The HRA exemption calculator shows how much of your rent allowance is tax-free.
The new regime: lower rates, fewer deductions
The new regime offers lower slab rates but removes most deductions and exemptions, keeping only a few such as the standard deduction for salaried people. It is simpler — no need to track and prove investments — and often better for those who do not invest heavily in tax-saving instruments or pay significant rent. It has become the default option, so you must actively opt for the old regime if it suits you better.
The standard deduction and rebate
Two features soften the bill for many. A standard deduction is available to salaried taxpayers and pensioners, reducing taxable salary without any proof or investment. Separately, a rebate means that those with taxable income up to a specified threshold effectively pay no tax at all. These provisions, more generous under recent new-regime changes, are why many lower- and middle-income earners now find the new regime hard to beat.
Surcharge and cess
On top of the basic tax, a health and education cess is added as a percentage of the tax, and high earners pay an additional surcharge that rises with income. These do not change which regime is better for most people, but they matter at higher incomes and explain why your final liability is a little above the headline slab calculation.
A worked comparison
Imagine someone earning 12 lakh who claims 1.5 lakh under 80C, 25,000 of health insurance, and 2 lakh of HRA — 3.75 lakh of deductions in total. Under the old regime their taxable income falls to around 8.25 lakh; under the new regime they are taxed on the full amount but at lower rates. The cheaper option depends entirely on whether those lower rates beat the deductions, which is why you should never guess. The old vs new regime calculator runs both for your exact numbers in seconds.
Which should you choose?
There is no universal answer. As a rule of thumb, the more deductions you genuinely claim — especially 80C, HRA and home-loan interest together — the more the old regime favours you; the fewer you claim, the better the new regime. Importantly, do not invest in tax-saving products you would not otherwise want just to justify the old regime; the deduction is only worth the tax it saves, not the money locked away.
Don't forget take-home pay and filing
Tax is only one deduction from your salary. Provident fund, professional tax and other components also affect what reaches your bank account each month. The take-home salary calculator shows your actual in-hand pay, and the TDS calculator estimates the tax deducted at source. File your return before the deadline even if all tax is already deducted, both to claim any refund and to stay compliant.