This choice is not trivially simple — whether the new regime produces a lower final tax liability depends entirely on the specific taxpayer’s income level, investment pattern, and the deductions they are currently claiming. Understanding how 115BAC changes tax liability, what is gained and what is given up, and how to calculate the optimal choice for your specific situation is essential for every salaried and self-employed taxpayer.
The New Tax Slabs Under Section 115BAC
Under section 115BAC of income tax act, the tax rates are: income up to Rs 3 lakh attracts zero tax; Rs 3 lakh to Rs 7 lakh attracts five percent; Rs 7 lakh to Rs 10 lakh attracts ten percent; Rs 10 lakh to Rs 12 lakh attracts fifteen percent; Rs 12 lakh to Rs 15 lakh attracts twenty percent; and income above Rs 15 lakh attracts thirty percent. 115BAC of the Income Tax Act introduced an alternative personal income tax regime that gives individual taxpayers a choice: continue with the existing regime and all its associated deductions and exemptions, or opt for lower tax rates under 115BAC while foregoing most deductions. These rates are meaningfully lower at middle-income ranges compared to the old regime’s applicable slabs, which is the primary appeal of the new regime. The standard deduction of Rs 75,000 for salaried employees is available under the new regime, though most other deductions are not.
The 87A Rebate and Its Effect Under the New Regime
The 87a rebate is available under the new regime for individuals whose total taxable income — after the standard deduction but before other deductions — does not exceed Rs 7 lakh. For these taxpayers, the rebate eliminates the tax liability entirely. Effectively, a salaried employee earning up to Rs 7.75 lakh (before the standard deduction, after which taxable income is Rs 7 lakh) pays zero income tax under the new regime. This is a significant benefit that makes the new regime particularly attractive for middle-income earners in this bracket, and it does not require any tax-saving investments or policy-managed deductions to access.
What Is Given Up Under Section 115BAC
Opting into the 115BAC regime means forgoing a significant range of deductions that reduced taxable income under the old regime. Section 80C deductions for PPF contributions, ELSS investments, life insurance premiums, and home loan principal repayment are not available. Section 80D deductions for health insurance premiums — which can be Rs 25,000 to Rs 75,000 or more annually for individuals covering themselves and their parents — are not deductible. House Rent Allowance exemption, Leave Travel Allowance, and Section 24b deductions for home loan interest are also not available. For a taxpayer who currently claims Rs 2.5 to Rs 3.5 lakh in total deductions under the old regime, this is a substantial trade-off that the lower rate alone may not compensate for.
How to Calculate Your Optimal Regime
The calculation is specific to each individual’s situation. Step one: calculate old regime tax liability by subtracting all applicable deductions and exemptions from gross income, applying old regime slabs to the result, and computing final tax. Step two: calculate new regime tax liability by applying new regime slabs to gross income minus only the standard deduction, applying the 87a rebate if applicable, and computing final tax. The regime producing the lower final liability is the optimal choice. This calculation should be done at the start of each financial year — the optimal choice can shift if income composition, investment pattern, or deduction amounts change from year to year.
Impact on Health Insurance Decision-Making
For taxpayers who hold health insurance, the unavailability of Section 80D under the new regime changes the financial calculus around the after-tax cost of insurance. Under the old regime, health insurance premiums were partially offset by the tax saving on the 80D deduction — reducing the effective net cost. Under the new regime, no such offset exists: the premium is a full out-of-pocket cost with no tax recovery. This does not change the fundamental value of health insurance, but it does change how the after-tax cost should be calculated when comparing the old and new regimes for individuals with significant insurance premium outflows.
The Annual Re-Evaluation Requirement
Under the current tax framework, salaried employees can choose between the old and new regime at the time of filing their income tax return for each financial year, subject to their employer’s payroll instructions throughout the year. Self-employed individuals have more limited re-switching options once a regime is chosen for a financial year. The 115BAC regime is not a permanent irrevocable election — it is an annual evaluation that should be made with current-year income and deduction data rather than assuming last year’s optimal choice remains optimal. Income changes, investment changes, and changes in health insurance requirements (adding parents, for example) can all shift the optimal regime from one year to the next.
Conclusion
Section 115BAC changes tax liability through lower slab rates at the cost of most deductions, and whether this change is beneficial depends entirely on the specific taxpayer’s income level and deduction pattern. The 87a rebate makes the new regime particularly attractive for middle-income earners within the rebate threshold. The annual calculation using current-year income and deduction data — comparing actual liability under both regimes — is the only reliable way to identify the optimal choice. Taxpayers who choose a regime based on general guidance without doing their specific calculation risk paying more tax than necessary, in either direction.
