Old vs New Tax Regime FY 2025-26: Complete Guide for Salaried Filers
A practical, math-first guide to choosing between Old and New tax regimes for FY 2025-26 / AY 2026-27. Budget 2025 slabs, breakeven analysis, three real-world scenarios, and the deductions that actually move the needle.
By RefundWise Team
Every June and July, the same question floods Indian WhatsApp groups: “Should I pick Old Regime or New Regime this year?” Budget 2025 made the answer harder, not easier — the New Regime got significantly more attractive, but the Old Regime still wins decisively for filers with stacked deductions.
This guide gives you the framework to decide. We cover the FY 2025-26 (AY 2026-27) rules, the breakeven analysis, three real-world scenarios at different income levels, and the exact deductions that actually move the needle.
The 2-minute summary
- New Regime (default): Wider slabs, ₹75,000 standard deduction, ₹60,000 rebate up to ₹12L taxable income. Effectively zero tax up to ₹12.75L gross salary if you have nothing to claim.
- Old Regime (optional): ₹50,000 standard deduction, ₹12,500 rebate up to ₹5L. Allows HRA, 80C, 80D, home loan 24(b), and most other Chapter VI-A deductions.
- Rule of thumb: If your total claimable deductions exceed roughly ₹4.5–5L, Old Regime usually wins for incomes ₹12–20L. Below that threshold, New Regime almost always wins.
- Both regimes can be switched annually for salaried individuals without business income.
What changed in Budget 2025
Budget 2025 (effective FY 2025-26 / AY 2026-27) made two structural changes to the New Regime: wider slabs and a much bigger 87A rebate. The Old Regime stayed unchanged.
Slabs widened
The New Regime now has 7 brackets:
| Income range | Rate |
|---|---|
| Up to ₹4,00,000 | 0% |
| ₹4,00,001 – ₹8,00,000 | 5% |
| ₹8,00,001 – ₹12,00,000 | 10% |
| ₹12,00,001 – ₹16,00,000 | 15% |
| ₹16,00,001 – ₹20,00,000 | 20% |
| ₹20,00,001 – ₹24,00,000 | 25% |
| Above ₹24,00,000 | 30% |
Previously, the New Regime topped out at 30% from ₹15L onwards. The new structure delays the 30% bracket to ₹24L, saving substantial tax for the ₹15–24L income band.
87A rebate massively expanded
The Section 87A rebate threshold in the New Regime jumped from ₹7L taxable income (₹25K rebate) to ₹12L taxable income (₹60K rebate). Combined with the ₹75,000 standard deduction, this means gross salary up to ₹12,75,000 attracts zero tax in the New Regime.
Marginal relief ensures the cliff above ₹12L doesn’t cause disproportionate tax jumps — a ₹1 increase in income beyond the threshold can’t produce more than ₹1 of additional tax.
What stayed the same
- Old Regime slabs (₹2.5L / ₹5L / ₹10L thresholds at 5%/20%/30%)
- Old Regime 87A rebate (₹12,500 up to ₹5L taxable)
- Old Regime standard deduction (₹50,000)
- Surcharge thresholds (₹50L / ₹1Cr / ₹2Cr / ₹5Cr)
- 4% Health & Education Cess (applied on tax + surcharge)
New Regime: who it’s built for
The New Regime has been the default since FY 2023-24. You don’t opt in; you opt out if you want Old Regime. It’s designed for users who don’t maintain a heavy deduction portfolio — fresh graduates, gig workers without HRA, or simply people who’d rather not chase paperwork.
Allowed in New Regime:
- Standard deduction ₹75,000 (salaried)
- Employer NPS contribution under Section 80CCD(2) — up to 14% of basic salary (Budget 2024 raised this from 10%)
- Family pension deduction up to ₹25,000 under Section 57(iia)
- That’s it.
Disallowed in New Regime:
- HRA exemption under Section 10(13A)
- Section 80C (PPF, ELSS, EPF, LIC premium, home loan principal)
- Section 80CCD(1B) — ₹50,000 personal NPS
- Section 80D — medical insurance
- Section 80G — donations
- Home loan interest under Section 24(b)
- Education loan interest under Section 80E
- Most other Chapter VI-A deductions
Old Regime: who it’s built for
The Old Regime survives because the deductions it allows are generous enough to beat the wider New Regime slabs — if you actually claim them. It rewards filers with a structured deduction portfolio.
| Deduction | Cap | Common use |
|---|---|---|
| Standard deduction | ₹50,000 | Automatic for salaried |
| HRA exemption (10(13A)) | min(actual HRA, rent − 10% basic, 50%/40% basic) | Tenants |
| Section 80C | ₹1,50,000 | PPF, ELSS, EPF, LIC, home loan principal |
| Section 80CCD(1B) | ₹50,000 | Personal NPS (over and above 80C) |
| Section 80D | ₹75,000 max (self + senior parents) | Health insurance |
| Section 24(b) | ₹2,00,000 | Home loan interest (self-occupied) |
| Section 80E | No limit | Education loan interest |
| Section 80G | 50%/100% of donation | Charitable donations |
A salaried filer who maxes 80C, 80CCD(1B), 80D, claims home loan interest, and has substantial HRA can easily stack ₹5–6L of deductions on top of the ₹50K standard deduction.
The breakeven analysis
The “breakeven” between Old and New is not a single number — it depends on both your gross income and your total claimable deductions. Three scenarios make this concrete.
Scenario 1: Mid-career IT professional, ₹15L gross
Profile: Gross ₹15,00,000 · Basic ₹7,50,000 · 80C ₹1,50,000 (EPF + PPF + ELSS) · 80D ₹25,000 · Rent ₹25,000/month in Bengaluru (non-metro for HRA).
New Regime computation:
- Taxable: ₹15,00,000 − ₹75,000 = ₹14,25,000
- Tax (slabs): ₹20,000 + ₹40,000 + ₹33,750 = ₹93,750
- 87A rebate: 0 (above ₹12L)
- Cess 4%: ₹3,750
- Total tax: ₹97,500
Old Regime computation: assume Form 16 HRA component of ₹3,00,000.
- HRA exemption: min(₹3,00,000, ₹3,00,000 − ₹75,000 = ₹2,25,000, ₹3,00,000) = ₹2,25,000
- Total deductions: ₹50K std + ₹2,25K HRA + ₹1,50K 80C + ₹25K 80D = ₹4,50,000
- Taxable: ₹15,00,000 − ₹4,50,000 = ₹10,50,000
- Tax (slabs): ₹12,500 + ₹1,00,000 + ₹15,000 = ₹1,27,500
- Cess 4%: ₹5,100
- Total tax: ₹1,32,600
New Regime wins by ₹35,100. Even with HRA + 80C maxed, this user’s ₹4.5L of total deductions sits right at the breakeven point — the wider New Regime slabs save more than the deductions are worth.
Scenario 2: Senior manager, ₹25L gross, full deduction stack
Profile: Gross ₹25,00,000 · Basic ₹12,50,000 · 80C ₹1,50,000 · 80CCD(1B) ₹50,000 · 80D ₹75,000 (self + senior parents) · Rent ₹50,000/month in Mumbai · Home loan interest ₹2,00,000.
New Regime:
- Taxable: ₹24,25,000
- Tax: ₹4,53,750 + 4% cess = ₹4,71,900
Old Regime:
- HRA exemption (Mumbai = metro, 50% basic): min(₹6L actual, ₹6L − ₹1.25L = ₹4.75L, ₹6.25L) = ₹4,75,000
- Total deductions: ₹50K + ₹4.75L + ₹1.5L + ₹50K + ₹75K + ₹2L = ₹10,00,000
- Taxable: ₹15,00,000
- Tax: ₹2,62,500 + 4% cess = ₹2,73,000
Old Regime wins by ₹1,98,900. The dense stack of deductions easily clears the breakeven for this income bracket.
Scenario 3: Fresh graduate, ₹6L gross, just EPF
Profile: Gross ₹6,00,000 · 80C ₹50,000 (EPF only) · No HRA, no home loan, no 80D.
New Regime: Taxable ₹5,25,000 · Tax ₹6,250 · 87A rebate ₹6,250 · Total tax: ₹0.
Old Regime: Taxable ₹5,00,000 · Tax ₹12,500 · 87A rebate ₹12,500 · Total tax: ₹0.
Tie — both regimes give zero tax. Pick New Regime for simpler filing (no need to document 80C investments).
How to decide for your specific case
- Estimate your total Old Regime deductions (HRA + 80C + 80CCD(1B) + 80D + 24(b) + other Chapter VI-A)
- If total < ₹3,00,000: New Regime almost always wins. Use it.
- If total ₹3,00,000 – ₹4,50,000: Close call. Run both numbers explicitly.
- If total > ₹4,50,000 AND income ₹12–20L: Old Regime usually wins.
- If total > ₹6,00,000 AND income ₹15L+: Old Regime almost always wins.
The Old vs New Regime calculator does this computation deterministically from your Form 16 and outputs both numbers side by side with the winner highlighted. No need to manually math through marginal relief, surcharge, or 87A cliffs.
Three common mistakes
Mistake 1: Choosing based on advice from a friend in a different bracket
What works for your colleague at ₹8L doesn’t work for you at ₹18L. The regime math is non-linear — slab progressivity, 87A cliffs, and surcharge thresholds mean the same ₹1,00,000 deduction has very different value at different income levels.
Mistake 2: Forgetting employer NPS contribution under 80CCD(2)
Section 80CCD(2) employer NPS is allowed in BOTH regimes — up to 14% of basic salary in New (Budget 2024 unification) and 10% in Old for non-government employees. If your employer contributes to NPS, that’s a deduction that just happens — you don’t actively claim it. RefundWise reads this from your Form 16 and applies it to both regime calculations automatically.
Mistake 3: Not factoring in marginal relief
At ₹12,00,001 New Regime taxable income, your tax jumps from ₹0 (with full 87A rebate) to ₹60,150 — for ₹1 of additional income. Marginal relief caps this so additional tax cannot exceed additional income. The IT Department applies marginal relief automatically when you file, but most online calculators don’t show it correctly. Make sure yours does — it can change a ₹50,000 mistake into a ₹50 mistake.
Try the calculator with your numbers
RefundWise computes both regimes from your Form 16 in under 2 minutes. The free preview shows your refund amount and which regime is recommended. The paid report (from ₹199 incl. 18% GST) unlocks the full breakdown, missed-deduction analysis, and a step-by-step filing guide for incometax.gov.in with your exact numbers.
Related guides
- Old vs New Regime Calculator — interactive comparator
- Income Tax Calculator FY 2025-26 — full tax computation
- Form 16 Tax Calculator — upload and parse
- HRA Exemption Calculator — Section 10(13A) helper