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Old vs New Tax Regime:
Which Wins for You in 2026-27?

Four worked examples across ₹8L, ₹15L, ₹24L and ₹50L. A break-even table. A decision flowchart. Everything the salary calculator's summary leaves out.

Tax Year 2026-27 · Verified against Income-tax Act, 2025 and Rules, 2026 · Last updated 21 August 2026

Every year the same question floods payroll inboxes: which regime should I declare? Colleagues compare numbers. HR sends a form. Most people guess, then wonder later whether they guessed right. The answer is not mysterious — it is arithmetic. But the arithmetic has moving parts that most explainers skip.

The short version: the new regime wins when your total claimed deductions (beyond the standard deduction) are low. The old regime wins when they are high enough to overcome the new regime's lower slab rates. The break-even point — the exact deduction level at which one overtakes the other — is different for every income level. Below we run four complete examples to show where it falls at each bracket, and a mini-calculator so you can test your own numbers.

Quick Regime Comparison
New Regime
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Old Regime
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What actually differs between the two regimes

Both regimes tax the same income — salary, rental income, and any other heads that apply. What changes is the rate structure and what you can deduct before the rates apply.

ItemNew RegimeOld Regime
Standard deduction₹75,000₹50,000
Slab ratesLower (0–30%, 7 slabs)Higher (0–30%, 4 slabs)
Section 80C (PF, ELSS, insurance)Not availableUp to ₹1,50,000
HRA exemptionNot availableLeast of 3 formulas
Home loan interest (self-occupied)Not availableUp to ₹2,00,000
Home loan interest (let-out)Uncapped (deduct from rental income)Uncapped (deduct from rental income)
Employer NPS (80CCD(2))14% of basic10% of basic
Meal vouchers (Rule 15(5)(a))₹200/meal₹200/meal
Section 87A rebateUp to ₹60,000 if taxable ≤₹12LUp to ₹12,500 if taxable ≤₹5L
The new regime wins on rates. The old regime wins on deductions. The question is always: are your deductions large enough to overcome the rate gap?

Four worked examples — the full arithmetic

Example 1: ₹8,00,000 CTC — the entry-level picture

At ₹8L CTC the new regime's rebate advantage is decisive. Taxable income under the new regime (₹8L gross minus ₹75K standard deduction = ₹7.25L) attracts a slab tax of about ₹32,500. Because taxable income is below ₹12L, Section 87A eliminates the entire tax. In-hand: effectively zero income tax.

The old regime cannot match this. Even claiming ₹1.5L of 80C deductions, taxable income is ₹6.25L, slab tax around ₹37,500, and the 87A rebate (≤₹5L threshold) offers no help at this income level. New regime wins at ₹8L for almost everyone.

Example 2: ₹15,00,000 CTC — the middle-income contest

₹15L CTC · Basic 50% · Bengaluru · Age under 60 PF on statutory ceiling · No employer NPS
Gross cash salary₹13,20,480
Minus standard deduction−₹75,000 (new) / −₹50,000 (old)
New regime tax (no other deductions)≈ ₹1,20,900 + 4% cess = ₹1,25,736
Old regime — HRA ₹80K + 80C ₹1.5L + 80D ₹25K = ₹2.55L deductionsTaxable ≈ ₹10,15,480 → tax ≈ ₹1,24,596 + cess = ₹1,29,580
New regime leads by≈ ₹3,844/yr

At ₹15L you need roughly ₹3L+ of old-regime deductions to overcome the new regime. HRA + full 80C alone usually does not make it; you need a home loan loss or substantial 80D on top. The break-even point at ₹15L is around ₹3.2–3.5L of claimed deductions.

Example 3: ₹24,00,000 CTC — where the regime argument gets serious

₹24L CTC · Basic 50% · Bengaluru · Age under 60 PF on statutory ceiling · No employer NPS
Gross cash salary (after PF + gratuity)₹21,20,680
New regime taxable (−₹75K)₹20,45,680 → tax ≈ ₹2,27,573
Old regime — HRA ₹2.4L + 80C ₹1.5L + home loan loss ₹2L + 80D ₹25K = ₹6.15LTaxable ≈ ₹14,55,480 → tax ≈ ₹1,91,096
Old regime leads by≈ ₹36,477/yr

At ₹24L with a genuine home loan loss, substantial HRA and full 80C, the old regime wins comfortably. Without the home loan loss, the margin collapses and the new regime regains the lead. The decisive lever at this bracket is the self-occupied home loan interest (up to ₹2L), which is old-regime only.

Example 4: ₹50,00,000 CTC — high bracket, surcharge territory

At ₹50L the 10% surcharge applies in the old regime (taxable income above ₹50L), adding roughly ₹50,000+ to the tax bill even after deductions. The new regime's surcharge is the same at this level. However, the old regime can still win if rental income losses are large — because an uncapped let-out interest deduction can bring taxable income below the ₹50L surcharge threshold.

At ₹50L CTC with no other deductions, the new regime typically saves ₹60,000–90,000 over the old regime's base rates, and the break-even deduction level rises to roughly ₹8–10L. That is achievable only with multiple properties, a large self-occupied home loan and significant 80D claims. Most ₹50L earners are new-regime taxpayers.

Break-even deduction table by income

Annual CTCNew regime tax (no extra deductions)Old regime must beat thisApprox. deductions needed for old regime to win
₹8 lakh₹0 (87A rebate)Also ₹0 at ≤₹5L taxableNew regime wins — old regime cannot match zero-tax at this level
₹12 lakh₹0 (87A rebate at ≤₹12L)Old regime: ~₹62,000Old regime cannot win — new regime's 87A rebate eliminates tax entirely
₹15 lakh~₹1.26L~₹1.30L before any deductions~₹3.2–3.5L of deductions
₹20 lakh~₹2.02L~₹2.37L before deductions~₹4.5–5L of deductions
₹24 lakh~₹2.28L~₹2.87L before deductions~₹5–6L of deductions
₹36 lakh~₹5.38L~₹6.52L before deductions~₹7–8L of deductions
₹50 lakh~₹10.14L~₹12.38L before deductions~₹8–10L of deductions

Figures are illustrative for a resident individual under 60, basic 50% of CTC, PF on the ₹15K ceiling, no employer NPS. Use the salary calculator for your exact numbers.

Decision flowchart — which regime for you?

Is your taxable income (after standard deduction) ≤ ₹12,00,000?
Yes → New regime. Section 87A eliminates your tax entirely. Old regime cannot match this.
No → Continue below ↓
Do you have a self-occupied home loan with interest > ₹1.5L AND genuine HRA AND full 80C?
Yes (all three) → Likely old regime. Run the numbers — the combined deduction may clear the break-even threshold.
No / partial → Likely new regime. Use the calculator to confirm.
Do your total old-regime deductions exceed the break-even table above for your bracket?
Yes → Old regime wins. File old, keep documentation, and re-check every April.
No → New regime wins. Simpler filing, same or better outcome.
The best regime is the one that costs you less tax on your actual numbers — not the one your colleague chose.

What changes between regimes that people miss

Professional tax deductibility. Professional tax (₹2,500 cap) is deductible in the old regime only, under Section 16(iii). At the 30% slab this is worth ₹750 in tax — small but real when regimes are close.

Employer NPS ceiling. The new regime allows a 14% of basic employer NPS contribution under Section 80CCD(2); the old regime caps it at 10%. For a ₹24L CTC with 50% basic, that is ₹48,000 extra routed tax-free into NPS in the new regime. This is often the regime argument clincher for people with no HRA or home loan. See the NPS guide for the full picture.

Let-out property — both regimes benefit. Interest on a let-out property is uncapped in both regimes, deducted against rental income. If your interest exceeds rent (the common case), the loss can be set off against salary up to ₹2L in the old regime only; in the new regime it carries forward. This is often the deciding argument for people who rent out a property they bought before the regime question arose. See the home loan guide.

Children's allowances. Education (₹3,000/child/month) and hostel (₹9,000/child/month) allowances introduced by Rule 280 of the 2026 Rules are old-regime only. With two children in hostel, this is ₹2,88,000 of exempt income — a game-changer for people in the 30% bracket who are also paying school fees.

Want to see both regimes on your exact salary structure? Use the full salary calculator →

Official sources

Every rate and threshold above traces to primary legislation.

Income-tax Act, 2025 — tax slabs, Section 87A, Section 80CCD(2) New regime slabs: 0% (≤₹4L), 5% (₹4–8L), 10% (₹8–12L), 15% (₹12–16L), 20% (₹16–20L), 25% (₹20–24L), 30% (>₹24L). Old regime under-60: 0% (≤₹2.5L), 5% (₹2.5–5L), 20% (₹5–10L), 30% (>₹10L). Section 87A rebate: new regime, up to ₹60,000 for taxable ≤₹12L; old regime, up to ₹12,500 for taxable ≤₹5L. incometax.gov.in
Income-tax Rules, 2026 — Rule 280 (children's allowances), Rule 279 (HRA cities), Rule 15(5)(a) (meals) Notified by CBDT on 20 March 2026, in force from 1 April 2026. Rule 280: education ₹3,000/child/month, hostel ₹9,000/child/month, old regime only, max two children. Meal voucher ₹200/meal, both regimes. HRA 50% cities: Mumbai, Delhi, Kolkata, Chennai, Bengaluru, Hyderabad, Pune, Ahmedabad. egazette.gov.in
Union Budget 2026 — no changes to slabs, standard deduction or 87A Budget 2026 confirmed the Tax Year 2026-27 structure introduced in Budget 2025. No slab changes, no standard deduction revision, no change to the ₹2L self-occupied interest ceiling. indiabudget.gov.in
Last updated: 21 August 2026 · Applies to: Tax Year 2026-27. Methodology: Examples use basic = 50% of CTC, PF on ₹15,000 statutory wage ceiling, no employer NPS unless stated, age under 60, professional tax ₹200/month. Tax computed on gross cash salary (CTC minus employer PF, gratuity and NPS) minus standard deduction minus stated deductions. Slab tax from Income-tax Act, 2025; cess 4%; Section 87A applied where applicable. Break-even figures are approximate and depend on deduction composition. This is an educational estimate — confirm your structure with a qualified professional before making a declaration.

Frequently asked questions

For salaried employees with no business income, yes — you can switch between old and new regimes every financial year by making a declaration to your employer at the start of the year. Once you have business or professional income, switching becomes restricted. Many salaried employees in the 20–30% bracket benefit from reviewing their regime choice each April, particularly after a salary increment or a major life change (new home loan, child entering school).
No. The new regime has been the default since Assessment Year 2024-25, meaning your employer will apply it if you do not specify. But you have the right to opt into the old regime by submitting a declaration before the first salary of the year. HR defaults are administrative defaults, not legal mandates. If you miss the employer declaration window, you can still file your return under the old regime directly, subject to any carry-forward loss restrictions.
Because the new regime's Section 87A rebate is unusually generous at ₹60,000 — it wipes out all tax liability for taxable incomes up to ₹12 lakh. No old-regime deduction can match zero tax. Above ₹12L, the rebate stops, the new regime's tax begins accruing at its slab rates, and the old regime's deductions finally have the chance to bring taxable income down far enough to overtake the new regime's lower rates.
Then the correct answer depends on two practical factors beyond the tax number: documentation burden and certainty. The old regime requires receipts, Form 16 Part A details, rent agreements, home loan certificates and potentially rent receipts to your landlord. If the tax saving is ₹2,000–5,000, many people reasonably decide the paperwork is not worth it. If you are well within either zone, the choice is clearer. The salary calculator's opportunity panel tells you exactly how far you are from the break-even and what would close the gap.
Section 80CCD(1B) — the ₹50,000 deduction for your own NPS contribution — is available in the old regime only. It sits outside the 80C ceiling, making it one of the more useful old-regime deductions for people who are already at the ₹1.5L 80C limit. In the new regime, only employer NPS contributions (80CCD(2)) are deductible. See the NPS guide for the full breakdown of both sections.
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