How Old Tax Regime works
Under the old regime you compute gross total income, subtract eligible deductions and exemptions, and apply the slab rates: nil up to Rs 2,50,000, then 5%, 20% and 30% on higher bands, plus cess. The more deductions you claim, the lower your effective tax.
Why Old Tax Regime matters
The old regime suits people with significant deductions, home loans, rent, insurance and investments, while the new regime often suits those who do not itemise. Choosing correctly can change your tax by tens of thousands of rupees a year.
Choosing between old and new
The old regime is a bargain only if you use its deductions. Its slab rates are higher than the new regime's, so its advantage comes entirely from what you can subtract before tax: Section 80C investments, HRA if you pay rent, home loan interest, medical insurance under 80D, and more. Stack enough of these and the higher rates apply to a much smaller income, beating the new regime's lower rates on a larger base.
The practical test is simple arithmetic. Total your realistic deductions for the year, compute tax under the old regime on income after those deductions, then compute tax under the new regime with no deductions, and pick the lower. A tenant with a home loan and full 80C usually lands in the old regime; someone who rents nothing and invests little usually lands in the new one.
Frequently asked questions
Is the old regime still available?
Yes. The old regime remains available, but the new regime is now the default, so you must actively opt for the old regime if it benefits you.
Who benefits from the old tax regime?
Taxpayers with large deductions, such as home loan interest, HRA, 80C investments and insurance, often pay less under the old regime.