Old vs New Tax Regime: A Decision Tree for FY 2025-26

As a general guideline, if your total qualifying deductions (80C + 80D + HRA + home loan interest + NPS 80CCD1B) exceed ₹3.75-4.25 lakh, the Old Regime typically results in lower tax liability. The exact crossover depends on your salary level because the slab rates differ. Use our Tax Regime Comparator calculator for your precise number.

Almost always, yes. Under the New Regime, the Section 87A rebate makes income up to ₹12 lakh (after ₹75,000 standard deduction, so gross up to ₹12.75 lakh) effectively tax-free. Under the Old Regime, you would need over ₹4 lakh in deductions to match zero tax, which is very difficult at this salary level.

Yes, salaried employees can switch between Old and New Tax Regime every financial year. The New Regime is the default — you must actively opt for the Old Regime either with your employer (for TDS purposes) or while filing your ITR. Business/professional income earners can switch only once in their lifetime.

Only two deductions are available: ₹75,000 standard deduction for salaried individuals, and employer NPS contribution under Section 80CCD(2) — up to 10% of Basic + DA for private sector, 14% for government employees. All other deductions (80C, 80D, 80CCD1B, HRA, LTA, home loan interest under Section 24) are not available.

HRA is often the single largest deduction for metro salaried employees. If you earn ₹15+ lakh and pay ₹25,000+ rent per month in a metro, your HRA exemption could be ₹1.5-3 lakh. This deduction alone can tip the balance toward the Old Regime. HRA is not available in the New Regime at all.

The New Tax Regime is the default regime from FY 2023-24 onward. If you do not explicitly opt for the Old Regime with your employer (via Form 12BB or declaration) or while filing your ITR, the New Regime applies automatically. For salaried individuals, it is advisable to inform your employer at the start of the financial year so that TDS is deducted correctly. You can still change your choice when filing the return, but incorrect TDS during the year means you may owe additional tax or get a larger refund.

Yes. Employer NPS contribution under Section 80CCD(2) is one of the few deductions available in both the Old and New Regime. The limit is up to 10% of Basic + DA for private sector employees and 14% for central government employees. This makes NPS employer contribution especially valuable for New Regime taxpayers since they lose almost all other deductions. If your employer offers NPS as part of the salary structure, opting in is generally beneficial regardless of which regime you choose.

Under the New Regime, Section 87A provides a rebate that makes income up to ₹12 lakh (taxable income after ₹75,000 standard deduction, so gross up to ₹12.75 lakh) effectively tax-free. Under the Old Regime, the 87A rebate applies only if taxable income (after all deductions) is up to ₹5 lakh. This is a significant difference — the New Regime's higher rebate threshold is the primary reason it is almost always better for incomes below ₹12.75 lakh. Note that the rebate does not apply to income taxed at special rates like LTCG or STCG.

A home loan provides two deductions under the Old Regime: principal repayment under 80C (up to ₹1.5 lakh, shared with other 80C investments) and interest payment under Section 24(b) (up to ₹2 lakh for self-occupied property). The interest deduction alone is worth ₹40,000-60,000 in tax savings for someone in the 30% bracket. Combined with HRA (if you are paying rent on a second city) or other deductions, a home loan almost always makes the Old Regime more favorable. Neither deduction is available in the New Regime.

The New Regime allows only two deductions: the ₹75,000 standard deduction for salaried individuals and employer NPS contribution under Section 80CCD(2). Additionally, transport allowance for disabled employees and conveyance allowance for official duties are available. No other deductions — including 80C, 80D, HRA, home loan interest, LTA, 80CCD(1B), 80E (education loan), 80G (donations), or 80TTA (savings interest) — are available. This simplicity is by design; the New Regime compensates with wider tax slabs and lower rates.

Senior citizens (60+) and super senior citizens (80+) have higher basic exemption limits under the Old Regime (₹3 lakh and ₹5 lakh respectively, vs ₹2.5 lakh for others). They can also claim up to ₹50,000 under 80TTB for interest income from deposits. Combined with 80D medical insurance deduction of up to ₹50,000 (or ₹1 lakh if covering senior citizen parents too), the Old Regime often works out better for senior citizens with moderate deductions. However, for senior citizens with pension-only income and minimal deductions, the New Regime's higher 87A rebate and wider slabs may still win. Running the numbers through a calculator is essential.