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Old vs New Tax Regime FY26: The Decision Tree for Indian Salaried Earners

New regime is default but old regime may save more tax. The break-even depends on your deductions stack — 80C + 80D + HRA + home loan + NPS. This guide walks through the decision tree with worked examples at different income levels.

9 min readReviewed 20 Jun 2026

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Indian salaried earners face a binary choice every April: old tax regime (higher slabs but rich deductions) or new tax regime (lower slabs, almost no deductions). New is default. Wrong choice = ₹50k-2L extra tax annually.

The slabs (FY 2025-26 / AY 2026-27)

New regime (default)

  • Up to ₹4 lakh: Nil
  • ₹4-8 lakh: 5%
  • ₹8-12 lakh: 10%
  • ₹12-16 lakh: 15%
  • ₹16-20 lakh: 20%
  • ₹20-24 lakh: 25%
  • Above ₹24 lakh: 30%

Plus 4% cess. Standard deduction ₹75,000 for salary/pension income. Rebate 87A: up to ₹60,000 rebate if normal slab-rate taxable income is ≤ ₹12 lakh.

Old regime (optional)

  • Up to ₹2.5 lakh: Nil
  • ₹2.5-5 lakh: 5%
  • ₹5-10 lakh: 20%
  • Above ₹10 lakh: 30%

Plus 4% cess. Standard deduction ₹50,000. Rebate 87A: up to ₹12,500 rebate if taxable income is ≤ ₹5 lakh. Allows 80C, 80D, HRA, 80CCD(1B), Section 24(b) home loan interest, etc.

The breakeven by income level

Gross salaryOld regime needs total deductions/exemptions of...
₹10 lakh~₹5 lakh total, because new regime is usually zero after rebate
₹15 lakh~₹5.9 lakh total
₹20 lakh~₹7.6 lakh total
₹25 lakh~₹8.5 lakh total
₹50 lakh+Run the calculator; surcharge and income mix can change the answer

These thresholds include the old regime's ₹50,000 standard deduction. After the FY26 slab expansion, new regime wins for many salaries that used to be old-regime borderline cases.

The deduction inventory (old regime only)

  • 80C (₹1.5L cap): EPF + ELSS + PPF + tax-saver FD + LIC + home loan principal + tuition fees
  • 80CCD(1B) NPS (₹50k): Extra ₹50k for NPS Tier-1
  • 80D (₹50k-₹1L): Health insurance self + parents
  • 80E: Education loan interest (no cap, 8 years)
  • 80G: Charitable donations (50-100% depending on org)
  • 80TTA / 80TTB: Savings interest ₹10k / Senior FD interest ₹50k
  • Section 24(b): Home loan interest up to ₹2L (self-occupied)
  • HRA exemption: 3-way formula on rent (see HRA guide)
  • LTA: Two trips in 4 years
  • Food coupons + vehicle reimbursement: Within company policy

Worked examples

Example 1: ₹15L income, salaried, rents in Bengaluru

Deductions: ₹1.5L 80C (EPF + ELSS) + ₹50k NPS + ₹25k 80D + ₹1.8L HRA exemption + ₹50k standard = ₹4.55L

Old regime: tax on ₹10.45L = ~₹1.31L. New regime: tax on ₹14.25L (only ₹75k standard deduction) = ~₹97.5k.

New wins by ~₹33k. This used to be marginal under older slabs; FY26 makes new regime stronger.

Example 2: ₹15L income, salaried, owns home with home loan

Deductions: ₹1.5L 80C (EPF + principal) + ₹50k NPS + ₹50k 80D + ₹2L home loan interest 24(b) + ₹50k standard = ₹5L

Old regime: tax on ₹10L = ~₹1.17L. New regime: tax on ₹14.25L = ~₹97.5k.

New wins by ~₹19.5k. Old needs an even heavier deduction stack to beat the expanded new-regime slabs.

Example 3: ₹15L income, no home loan, basic 80C only

Deductions: ₹1.5L 80C + ₹25k 80D + ₹50k standard = ₹2.25L

Old regime: tax on ₹12.75L = ~₹2.03L. New regime: tax on ₹14.25L = ~₹97.5k.

New wins by ~₹1.05L.

Example 4: ₹8L income, salaried

Most ₹8L salaried earners fall under the ₹12L rebate in new regime → ZERO tax. Old regime is also zero only if deductions bring taxable income down to ₹5L or below.

New wins comprehensively at ₹8-12L income due to the rebate.

The decision algorithm

  1. Normal salary up to about ₹12.75L? → NEW regime usually gives zero tax after standard deduction + rebate
  2. Income ₹12.75-15L without unusually high deductions? → NEW regime
  3. Income ₹15L+ with home loan + max 80C + HRA + 80D + NPS? → compare carefully; old no longer wins automatically
  4. Income ₹15L+ without home loan, modest deductions? → NEW regime
  5. Capital gains, lottery, crypto, or other special-rate income? → use calculator; rebate behaviour can differ from pure salary cases

Switching mechanics

  • Salaried (no business income): Switch regimes annually at ITR filing.
  • Business/professional income earners: The opt-out workflow is stricter and switching back is restricted, so decide before filing.
  • Default behaviour: If you don't explicitly opt for old at ITR, new regime applies.

The future direction

Government clearly nudging toward new regime — lower slabs each Budget, sweeter rebate. Old regime deductions unlikely to expand. Plan long-term assuming new becomes standard, but optimise for current year specifics.

Use the Income Tax calculator to compute both regimes side-by-side with your specific numbers. Make the decision data-driven, not based on what colleagues do.

Before you act — check first

Context ReceiptTax

  • What changed?

  • What do the numbers say?

  • What is the risk?

  • Do I understand it?

  • Is it worth tracking?

No tips. No noise. Just context. Educational only — not investment advice.

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HRA Exemption Calculator

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