The single most common tax question among salaried Indians in 2025-26 is: should I opt for the New Tax Regime or the Old Tax Regime? The answer is not the same for everyone — it depends on your income level and the deductions you can legitimately claim. This guide walks through the complete comparison, with step-by-step tax calculations at multiple income levels, so you can make the decision with real numbers rather than guesswork.
The Two Regimes: What Is Actually Different?
The New Tax Regime, introduced in FY 2020-21 and made the default from FY 2023-24, offers lower tax slab rates across all income brackets. In exchange, it removes the ability to claim most exemptions and deductions — including Section 80C (₹1.5 lakh for PPF, ELSS, life insurance), Section 80D (health insurance), HRA, LTA, and home loan interest under Section 24(b).
The Old Tax Regime retains the pre-2020 slab structure with higher rates but allows all these deductions. For someone who actively invests in tax-saving instruments and lives in rented accommodation, the old regime can still result in a lower actual tax outgo despite its higher nominal rates.
New Tax Regime Slabs for FY 2025-26 (Budget 2025)
The Budget 2025 significantly restructured the New Tax Regime slabs, making it considerably more attractive for most income levels. The slabs are applied after a standard deduction of ₹75,000 for salaried employees.
- Up to ₹4,00,000 — Nil
- ₹4,00,001 to ₹8,00,000 — 5%
- ₹8,00,001 to ₹12,00,000 — 10%
- ₹12,00,001 to ₹16,00,000 — 15%
- ₹16,00,001 to ₹20,00,000 — 20%
- ₹20,00,001 to ₹24,00,000 — 25%
- Above ₹24,00,000 — 30%
A 4% Health and Education Cess applies on the computed tax. Section 87A rebate under the new regime: if taxable income (after standard deduction) is ₹12 lakh or less, the entire tax is rebated — effectively making the net tax zero. For salaried employees with a ₹75,000 standard deduction, this means zero tax on gross income up to ₹12,75,000 in FY 2025-26.
Old Tax Regime Slabs for FY 2025-26
The old regime slabs are unchanged from previous years. The standard deduction is ₹50,000 (lower than the new regime). Section 87A rebate applies only if taxable income is ₹5 lakh or less, reducing tax to zero for incomes up to ₹5.5 lakh after standard deduction.
- Up to ₹2,50,000 — Nil (₹3 lakh for age 60–80; ₹5 lakh for 80+)
- ₹2,50,001 to ₹5,00,000 — 5%
- ₹5,00,001 to ₹10,00,000 — 20%
- Above ₹10,00,000 — 30%
- 4% Cess on all computed tax
Worked Example: ₹8 Lakh Gross Salary
New Regime: Taxable income = ₹8L – ₹75K standard deduction = ₹7,25,000. Tax on ₹7.25L: ₹0 on 0–4L + ₹16,250 on 4–7.25L at 5% = ₹16,250. Section 87A rebate = ₹16,250 (since taxable income ≤ ₹12L). Net tax = ₹0.
Old Regime without deductions: Taxable income = ₹8L – ₹50K = ₹7,50,000. Tax: ₹0 on 0–2.5L + ₹12,500 on 2.5–5L at 5% + ₹50,000 on 5–7.5L at 20% = ₹62,500. No rebate (income > ₹5L). Cess = ₹2,500. Net tax = ₹65,000.
At ₹8 lakh gross: New regime = ₹0 tax. Old regime without deductions = ₹65,000 tax. Even with full 80C + 80D + NPS deductions (₹2.25 lakh total), old regime taxable income falls to ₹5.25L, giving a tax of ₹3,250 + cess = ₹3,380. New regime still wins at this income level.
Worked Example: ₹12.75 Lakh Gross — The Zero-Tax Limit
New Regime: ₹12,75,000 – ₹75,000 standard deduction = ₹12,00,000 taxable. Tax: ₹0 + ₹20,000 + ₹40,000 = ₹60,000. Section 87A rebate = ₹60,000 (taxable income = ₹12L, rebate limit = ₹60,000). Net tax = ₹0. This is the maximum gross salary for a salaried employee to pay zero income tax in FY 2025-26 under the new regime.
Old Regime with full deductions: If someone at ₹12.75L claims ₹50K standard deduction + ₹1.5L (80C) + ₹25K (80D) + ₹50K (NPS 80CCD(1B)) = ₹2.75L in deductions. Taxable income = ₹12.75L – ₹2.75L = ₹10L. Tax on ₹10L: ₹0 + ₹12,500 + ₹1,00,000 = ₹1,12,500. Cess = ₹4,500. Net tax = ₹1,17,000. New regime is clearly better here.
Worked Example: ₹15 Lakh Gross
New Regime: ₹15L – ₹75K = ₹14,25,000 taxable. Tax: ₹60,000 (on 4–12L) + ₹33,750 (on 12–14.25L at 15%) = ₹93,750. No 87A rebate. Cess = ₹3,750. Net tax = ₹97,500.
Old Regime with full deductions (₹50K + ₹1.5L + ₹25K + ₹50K = ₹2.75L): Taxable income = ₹15L – ₹2.75L = ₹12,25,000. Tax: ₹0 + ₹12,500 + ₹1,00,000 + ₹6,750 (on 10–12.25L at 30%) = ₹1,19,250. Cess = ₹4,770. Net tax = ₹1,24,020. At ₹15L, new regime (₹97,500) beats old regime even with full deductions (₹1,24,020).
Surprising finding: At ₹15 lakh, the New Tax Regime saves ₹26,520 even if you have ₹2.75 lakh in total deductions. The lower slab rates in the new regime more than compensate for the lost deductions at this income level.
Worked Example: ₹20 Lakh Gross — Where Old Regime Can Win
New Regime: ₹20L – ₹75K = ₹19,25,000 taxable. Tax: ₹60,000 + ₹60,000 (on 12–16L at 15%) + ₹65,000 (on 16–19.25L at 20%) = ₹1,85,000. Cess = ₹7,400. Net tax = ₹1,92,400.
Old Regime with maximum deductions (₹50K standard + ₹1.5L 80C + ₹25K 80D + ₹50K NPS + ₹2L HRA = ₹4.75L total): Taxable income = ₹20L – ₹4.75L = ₹15,25,000. Tax: ₹0 + ₹12,500 + ₹1,00,000 + ₹1,57,500 (on 10–15.25L at 30%) = ₹2,70,000. Cess = ₹10,800. Net tax = ₹2,80,800. New regime still wins.
However, if total deductions reach ₹5.5–6 lakh (which is possible with a large HRA city like Mumbai + home loan interest under 24b + full 80C + NPS), taxable income under old regime may drop to ₹13.5–14L, and tax may approach ₹1.8–2L after cess — comparable to the new regime. At very high deductions, old regime can break even or slightly win.
The Breakeven Deduction Threshold
The rule of thumb: new regime wins unless your total deductions under old regime exceed approximately 30–35% of your gross income. For most salaried employees, deductions peak at ₹3–4 lakh (standard deduction + 80C + 80D + NPS), which is rarely enough to beat the new regime at incomes below ₹15 lakh.
The old regime becomes genuinely competitive when you have: a high HRA component with large city rent, home loan interest (₹2 lakh under Section 24b), full Section 80C (₹1.5 lakh), health insurance for parents (₹50K via 80D), and NPS (₹50K via 80CCD(1B)). This combination totals ₹5.5+ lakh in deductions and is typically available only to higher-income earners in metro cities.
Deductions Available Under Old Regime (Not in New)
- Standard deduction: ₹50,000 (vs ₹75,000 in new regime)
- Section 80C: ₹1,50,000 (PPF, ELSS, EPF, NSC, ULIP, life insurance, tuition fees, tax-saving FD)
- Section 80D: ₹25,000–₹1,00,000 for health insurance premiums
- Section 80CCD(1B): ₹50,000 for voluntary NPS contributions
- HRA exemption: actual rent minus 10% of basic, subject to salary-based limit
- Section 24(b): ₹2,00,000 home loan interest on self-occupied property
- LTA (Leave Travel Allowance): actual travel cost for 2 trips in a 4-year block
- Section 80TTA: ₹10,000 interest on savings account (₹50,000 for senior citizens under 80TTB)
Deductions That Apply to Both Regimes
- Standard deduction for salaried: ₹75,000 (new) / ₹50,000 (old)
- Employer NPS contribution (Section 80CCD(2)): up to 10% of basic salary — this deduction is available in both regimes and is a significant advantage for government employees
- Gratuity exemption: up to ₹20 lakh
- HRA for full new regime exemption: partial HRA is available under new regime only in limited conditions
Who Should Choose the New Tax Regime?
- Salaried employees with gross income below ₹12.75 lakh (zero tax either way — new regime is simpler)
- Young earners without significant 80C investments or HRA
- Self-employed professionals who don't have large business expenses to deduct
- Those who prefer simplicity over tax optimisation complexity
- Employees whose employer does not offer HRA (flat salary structures in many startups)
Who Should Consider the Old Tax Regime?
- High earners (₹20 lakh+) with large rent (HRA) in metro cities
- Home loan borrowers with active interest payments of ₹2 lakh/year under Section 24(b)
- Those with senior citizen parents (₹50,000 health insurance deduction under 80D)
- Employees with very large HRA components combined with high city rent
- Individuals with specific Chapter VI-A deductions like 80G (donations), 80E (education loan interest), 80EEB (EV loan)
How to Decide: A Practical Checklist
- List all deductions you can claim under old regime (standard deduction + 80C + 80D + HRA + home loan + NPS + others)
- Use an income tax calculator to compute your actual tax under old regime with these deductions
- Compute your tax under new regime with only the standard deduction of ₹75,000
- Choose whichever gives the lower tax — the difference is your answer
- For borderline cases (difference < ₹10,000), prefer new regime for its simplicity
- Review every April since budget changes can shift the breakeven point
Can You Switch Regimes Every Year?
If you are a salaried individual without any business income, you can choose your regime every year when filing your ITR — you are not locked in. Inform your employer (HR/payroll) at the start of the financial year which regime to use for TDS deduction from your salary. If you don't inform your employer, TDS is calculated under the new regime (as it is the default). You can always recalculate and claim a refund at ITR time if you switch to old regime and find it beneficial.
Individuals with business income (freelancers, consultants, proprietors) are permitted to switch back to the old regime only once in their lifetime. They should choose carefully, as switching back is a one-time option.
Compare your exact tax under both regimes with our Income Tax Calculator →
