New vs Old Tax Regime — Complete Comparison for FY 2025-26

The new tax regime is generally better for: taxpayers with income below Rs.7 lakh (zero tax due to 87A rebate), salaried employees earning up to Rs.12,75,000 (zero tax after standard deduction and rebate), and employees with total deductions below Rs.3.5 lakh. The old regime is better for employees with combined deductions — 80C, 80D, HRA, home loan interest — exceeding Rs.3.75 lakh at the 30% tax slab. Compute both before deciding; no single answer applies to everyone.

No. The new tax regime is the default for FY 2025-26 under Section 115BAC, but it is not mandatory. Salaried employees can opt for the old regime by submitting Form 12BB to their employer at the start of the year. Self-employed individuals and business owners select their regime in the ITR. At the ITR stage, salaried employees can choose either regime regardless of what was declared to the employer. The default only means the employer uses new regime for TDS if no declaration is made.

The new tax regime for FY 2025-26 permits very few deductions: standard deduction of Rs.75,000 for salaried employees, employer's NPS contribution under Section 80CCD(2) with no upper cap, family pension standard deduction of Rs.15,000 or one-third of pension whichever is lower, and home loan interest on let-out property under Section 24(b). All other deductions — Section 80C, 80D, HRA, LTA, home loan interest for self-occupied property — are not available.

Salaried employees can inform their employer about a regime change once during the financial year by submitting a revised Form 12BB. The employer adjusts TDS from the month of change. At the ITR stage, salaried employees can freely choose either regime regardless of mid-year changes. Business owners who opted for new regime cannot switch back to old regime within the same year — they have a one-time switching option across years, making the choice more binding for non-salaried taxpayers.

Tax on Rs.15 lakh salary under new regime for FY 2025-26: Taxable income = Rs.15L minus Rs.75,000 standard deduction = Rs.14,25,000. Tax = nil on Rs.3L + 5% on Rs.4L (Rs.20,000) + 10% on Rs.3L (Rs.30,000) + 15% on Rs.2L (Rs.30,000) + 20% on Rs.2,25,000 (Rs.45,000) = Rs.1,25,000. Plus 4% cess = Rs.1,30,000 total tax. The 87A rebate does not apply as income exceeds Rs.12L.

The breakeven deduction amount — where old and new regime tax is equal — varies by income level. For income around Rs.10 lakh to Rs.15 lakh, the breakeven is approximately Rs.3.5 lakh to Rs.4 lakh in total deductions including standard deduction. Above Rs.15 lakh income, the breakeven rises as both regimes converge at 30% rate. The best approach is to compute actual tax under both regimes using the specific income and available deductions rather than relying on a single breakeven figure.

Yes. Business owners who switch to the new regime and want to switch back to old regime must be careful — business taxpayers can switch from new to old regime only once. After switching back to old regime, they cannot switch to new regime again in a later year. This one-time option makes the regime decision more permanent for business taxpayers compared to salaried employees, who can freely choose each year at the ITR stage without restriction.

Yes, Section 87A rebate is available under the old tax regime as well, but at a lower amount. Under the old regime for FY 2025-26, the rebate is Rs.12,500 for individuals with total income up to Rs.5 lakh — effectively making income up to Rs.5 lakh nil-tax in the old regime. Under the new regime, the rebate is Rs.60,000 for income up to Rs.12 lakh — significantly more generous. This enhanced new regime rebate is the primary reason the new regime is superior for income below Rs.12 lakh.