Old vs New Tax Regime: Complete Guide for FY 2025-26
Every financial year, salaried taxpayers in India face a pivotal decision: stick with the old tax regime and claim deductions, or switch to the new tax regime with lower slab rates but fewer breaks. Budget 2025 further refined the new regime for FY 2025-26, making it the default choice for most filers while keeping the old regime available for those who benefit from extensive deductions. This guide explains what changed, what you give up, and how to decide — then use the calculator above with your actual numbers for a personalised answer.
What changed in the new tax regime for FY 2025-26
The new tax regime under Section 115BAC continues as the default from FY 2023-24, but FY 2025-26 brings meaningful updates. The standard deduction for salaried individuals and pensioners stands at ₹75,000 — higher than the ₹50,000 available under the old regime. Revised slab rates apply: nil tax up to ₹4 lakh, 5% from ₹4–8 lakh, 10% from ₹8–12 lakh, 15% from ₹12–16 lakh, 20% from ₹16–20 lakh, 25% from ₹20–24 lakh, and 30% above ₹24 lakh. The Section 87A rebate threshold has been raised to ₹12 lakh of taxable income, meaning many middle-income earners pay zero tax under the new regime after the standard deduction. A 4% health and education cess still applies on the tax computed after rebate. These changes make the new regime significantly more attractive for taxpayers without large deduction portfolios, especially those earning up to roughly ₹12.75 lakh gross salary.
Key deductions you lose in the new regime
Choosing the new regime means forfeiting most exemptions and Chapter VI-A deductions that the old regime preserves. You cannot claim HRA exemption under Section 10(13A), even if you pay rent in a metro city. Section 80C investments — PPF, ELSS, EPF, life insurance premiums, NSC, and home loan principal — worth up to ₹1.5 lakh annually are unavailable. Health insurance premiums under Section 80D, additional NPS contributions under Section 80CCD(1B), home loan interest up to ₹2 lakh under Section 24(b), education loan interest under Section 80E, charitable donations under Section 80G, professional tax, and LTA exemptions all disappear. The new regime offers simplicity — one standard deduction and slab-based calculation — but taxpayers who have structured their finances around these deductions may see a higher tax bill despite lower nominal rates. Our calculator above itemises each deduction so you can see exactly how much taxable income shifts between regimes.
When the old regime is better
The old regime wins when your total eligible deductions substantially reduce taxable income. Typical high-benefit profiles include salaried employees in rented metro accommodation with significant HRA components, individuals maximising Section 80C through EPF and ELSS, families with health insurance for self and senior citizen parents, NPS subscribers using the ₹50,000 additional 80CCD(1B) window, and home loan borrowers claiming interest under Section 24(b). A taxpayer earning ₹18–22 lakh with ₹1.5 lakh in 80C, ₹50,000 in 80D, ₹1.2 lakh HRA exemption, and ₹2 lakh home loan interest can reduce taxable income by over ₹5 lakh compared to the new regime — often more than offsetting the old regime's higher slab rates. The old regime rebate under Section 87A still zeroes tax for taxable income up to ₹5 lakh, which helps lower earners with moderate deductions. If your calculator result shows meaningful savings with the old regime, opt in explicitly when filing your ITR for AY 2026-27.
When the new regime is better
The new regime suits taxpayers with few or no deductions to claim. Young professionals without rent (no HRA benefit), minimal 80C investments, no home loan, and limited health insurance premiums often pay less tax under the new slabs plus ₹75,000 standard deduction. The generous ₹12 lakh rebate threshold means gross salaries around ₹12.75 lakh can attract zero tax — a scenario impossible under the old regime for most earners at that income level without extraordinary deductions. Simplicity is another advantage: no document collection for proofs, faster filing, and fewer scrutiny risks from mismatched deduction claims. If the calculator shows the new regime saving ₹20,000 or more — or if both regimes tie — many taxpayers prefer the new default for ease of compliance. Re-evaluate each year; a new home loan or increased rent can flip the recommendation.
Next steps: file with confidence
Regime selection affects every rupee of TDS reconciliation and refund at filing time. Use our income tax calculator for a quick overview, or the detailed comparison above for a full deduction-by-deduction breakdown. When you are ready to file, our ITR filing service handles regime optimisation, document verification, and expert review — or start filing your ITR online in minutes. The deadline for AY 2026-27 is 31 July 2026; late filing attracts penalties under Section 234F.
Disclaimer: This calculator is for estimation purposes only. Tax laws, rebate limits, and deduction caps are subject to change. Consult a qualified tax professional for advice tailored to your complete financial situation before selecting a regime or filing your return.