TAX PLANNING GUIDE  ·  FY 2026–27

A fact-checked comparison of slab rates, deductions, rebates and real take-home numbers under India's Old and New Income Tax Regimes for FY 2026-27 (AY 2027-28), based on the Union Budget 2026.

 Introduction

Every year, millions of Indian taxpayers face the same question at the start of tax season: should I stay with the New Tax Regime, or is the Old Tax Regime still the smarter choice? The Union Budget 2026 has kept the slab structure unchanged from the previous year, but that doesn't mean the decision is any simpler. Your answer still depends entirely on your income level, your investments, and how many deductions you can genuinely claim.

This guide breaks down the verified numbers — slab rates, standard deductions, rebates under Section 87A, and the real break-even point where the Old Regime starts winning — so you can decide with confidence rather than guesswork.

The Difference Between New Regime and Old Regime

At heart, the two regimes represent two different philosophies of taxation. The New Regime trades away deductions for lower, simpler slab rates — you report your income, subtract a flat standard deduction, and pay tax on what's left. The Old Regime keeps higher slab rates but rewards documented saving and spending — every rupee you park in PPF, insurance, a home loan, or health cover can shrink your taxable income before tax is even calculated.

● Default vs opt-in: The New Regime is now the automatic default for every taxpayer; the Old Regime must be actively chosen each year (or via Form 10-IEA for business/professional income).

● Rates: The New Regime has more slabs with lower rates at each step; the Old Regime has fewer, wider slabs with a steeper jump from 5% to 20% at ₹5 lakh.

● Deductions: The New Regime allows almost none (only the standard deduction and employer NPS contribution); the Old Regime allows a full basket — 80C, 80D, HRA, home loan interest, and more.

● Paperwork: The New Regime needs little to no proof of investment; the Old Regime requires you to maintain receipts, premium certificates, and interest statements to substantiate every claim.

● Who it favours: The New Regime tends to favour those with straightforward finances and limited investments; the Old Regime tends to favour those with a home loan, dependents, insurance, and disciplined long-term savings.

The 2026 Snapshot: What Changed (and What Didn't)

● Budget 2026 has retained the income tax slabs announced in Budget 2025 — there is no change to rates for FY 2026-27 (AY 2027-28) under either regime.

● The New Tax Regime remains the default option under Section 115BAC; you must actively opt for the Old Regime if you want it.

● Salaried individuals earning up to ₹12.75 lakh (₹12 lakh taxable income + ₹75,000 standard deduction) pay zero tax under the New Regime, thanks to the enhanced Section 87A rebate of up to ₹60,000.

● The Income Tax Act, 2025 formally replaces the six-decade-old Income Tax Act, 1961, effective 1 April 2026, simplifying language and introducing the concept of a unified 'Tax Year' — but it does not alter slab rates or deduction rules for individuals.

Source check: ClearTax, HDFC Bank and the Income Tax Department confirm that Budget 2026 left individual tax slabs unchanged, with reforms focused on simplification (Income Tax Act 2025) and STT changes on F&O trading rather than fresh rate cuts.

Income Tax Slabs for FY 2026-27 (AY 2027-28)

New Tax Regime (Default)

Old Tax Regime (Opt-in, individuals below 60 years)

Senior citizens (60–80 years) get a higher exemption of ₹3 lakh, and super senior citizens (above 80) get ₹5 lakh — but only under the Old Regime. The New Regime does not offer age-based exemption differences.

Old Tax Regime: The Full Deductions Basket

The Old Regime's real value lies entirely in what you can deduct before tax is calculated. Here is the complete set of commonly used deductions available only (or primarily) under the Old Regime:

● Section 80C — up to ₹1,50,000 for PPF, EPF, ELSS mutual funds, life insurance premiums, five-year tax-saving FDs, and home loan principal repayment.

● Section 80CCD(1B) — an additional ₹50,000 for voluntary NPS contributions, over and above the 80C limit.

● Section 80D — up to ₹25,000 for health insurance premiums (self and family), and up to ₹50,000 for senior citizen parents.

● HRA exemption (Section 10-13A) — a substantial exemption for salaried employees who pay rent, calculated on salary, rent paid, and city of residence.

● Section 24(b) — up to ₹2,00,000 deduction on home loan interest for a self-occupied property.

● Section 80E — full deduction (no upper cap) on interest paid on an education loan.

● Section 80G — deduction for donations to eligible charitable institutions and relief funds.

● Section 80TTA / 80TTB — ₹10,000 deduction on savings account interest (below 60 years), or ₹50,000 on all interest income for senior citizens.

● Section 80GG — deduction for rent paid when HRA is not part of your salary structure.

Standard deduction under the Old Regime is ₹50,000 for salaried individuals and pensioners — lower than the New Regime's ₹75,000, which is one reason the Old Regime needs a larger combined deduction basket to catch up.

Head-to-Head: Deductions, Rebates & Exemptions

*Before adding any 80C/80D/HRA deductions, which can push the old-regime tax-free salary meaningfully higher.

Worked Example: ₹12 Lakh Salary

Consider a salaried employee earning ₹12,00,000 a year. Under the New Regime, after the ₹75,000 standard deduction, taxable income falls to ₹11,25,000 — but the Section 87A rebate structure and marginal relief mean the effective outcome for the commonly cited ₹12 lakh case is zero tax when the ₹75,000 standard deduction brings net taxable income to ₹12,00,000 or below the rebate ceiling. Under the Old Regime, the same person claims ₹50,000 standard deduction, ₹1,50,000 under 80C, ₹50,000 under 80CCD(1B) for NPS, ₹25,000 under 80D, and ₹2,00,000 in home loan interest under Section 24(b) — a total of ₹4,75,000 in deductions.

Verified calculation basis: ClearTax and 1Finance both confirm that for a ₹12 lakh salary with a full ₹4.75 lakh deduction basket, the Old Regime tax liability works out to roughly ₹57,500–₹59,800 (with cess), while the New Regime liability is nil due to the ₹12 lakh rebate ceiling — meaning the New Regime still wins even with substantial deductions at this income level.

So where is the break-even point?

● At ₹10 lakh income: the Old Regime only pulls ahead if your total deductions exceed roughly ₹3.75–4.25 lakh.

● At ₹15–20 lakh income: the Old Regime needs deductions above approximately ₹5.4–5.5 lakh to beat the New Regime.

● At ₹20 lakh income: deductions must exceed roughly ₹7–7.1 lakh for the Old Regime to save more.

● Above ₹25 lakh income: the Old Regime typically requires deductions in excess of ₹8 lakh to come out ahead.

These break-even figures are drawn from ClearTax's published regime-comparison analysis for FY 2025-26 (AY 2026-27), which remains applicable for FY 2026-27 since Budget 2026 made no slab changes.

Which Regime Suits Your Life Stage?

First job / early career (no dependents, renting or living with family)

With few investments and no home loan yet, the New Regime usually wins outright — the higher standard deduction and ₹12 lakh rebate typically beat whatever small 80C basket you've started building.

Young professional paying rent

If your rent is substantial and you claim a meaningful HRA exemption, run both calculations — HRA alone can sometimes tip the balance toward the Old Regime, especially in metro cities where rent is high relative to salary.

Homeowner with a loan and a young family

This is where the Old Regime often shines. Home loan interest (up to ₹2 lakh), full 80C usage, health insurance for a family floater plan, and school/childcare-linked savings can together cross the ₹4–5.5 lakh deduction threshold needed to beat the New Regime at mid-to-high income levels.

Mid-to-late career, high earner (₹20 lakh+)

At higher incomes the New Regime's rebate advantage disappears, since the ₹60,000 rebate only applies up to ₹12 lakh taxable income. Here, the decision comes down almost entirely to how large your genuine deduction basket is — the Old Regime typically needs upward of ₹7–8 lakh in deductions to win at this level.

Senior and super senior citizens

The Old Regime offers age-based exemption limits — ₹3 lakh for ages 60–80, and ₹5 lakh above 80 — which the New Regime does not match. Combined with 80TTB (₹50,000 on interest income) and 80D benefits on higher insurance premiums, many retirees still find the Old Regime more rewarding, particularly if pension and interest income form the bulk of their earnings.

Self-employed professionals and business owners

Unlike salaried taxpayers, this group cannot switch regimes freely every year — the choice carries a one-time-switch-back restriction (explained below), so it's worth modelling a few years of projected income and deductions before committing.

How to Choose and Switch Your Regime

A 4-step checklist to decide

Step 1 — List every deduction you can genuinely claim: 80C, 80D, HRA, home loan interest, NPS, and any others.

Step 2 — Add them up. If the total is below ~₹4 lakh, the New Regime almost certainly wins.

Step 3 — Run both calculations using the Income Tax Department's official calculator or a trusted platform like ClearTax before filing.

Step 4 — Revisit the decision every year — your deduction basket and income will change as your life stage changes.

How switching actually works

● Salaried employees (no business income): You can choose between the Old and New Regime freely, every single financial year, simply by selecting your preference at the time of filing your ITR. No form or advance declaration is required for return filing, though you may indicate a preference to your employer for TDS purposes during the year.

● Individuals with business or professional income: You must file Form 10-IEA on or before the due date under Section 139(1) to opt out of the default New Regime. If you later want to withdraw from the Old Regime and return to the New Regime, that switch-back is permitted only once in a lifetime — after which you cannot opt out again.

● Timing matters: Make your choice before filing; once a return is filed under a chosen regime for a given year, it generally cannot be revised for that year purely to switch regimes.

A Note on Choosing Well, Not Just Choosing Low

It's tempting to treat this purely as an arithmetic exercise — whichever regime produces the smaller tax bill this year wins. But the smarter lens is a little broader than that.

● The Old Regime's deductions are, in effect, a forcing function for long-term saving. An 80C commitment to PPF or ELSS, or a home loan, builds an asset or a retirement corpus alongside the tax break. Choosing the New Regime purely for its lower headline rate can mean losing that built-in discipline unless you replace it with your own investing habit.

● The New Regime's simplicity has its own value: more liquidity today, no lock-ins, no paperwork, and no risk of losing a deduction to a missed compliance step (like a lapsed insurance premium or an under-documented HRA claim).

● Think one to three years ahead, not just at this year's number. A big one-off deduction (e.g., a new home loan) can make the Old Regime attractive this year, but you should check whether that advantage holds as the loan amortises and interest paid each year declines.

● For business owners and professionals, the once-in-a-lifetime switch-back rule makes this a strategic decision, not just an annual one — model a few years forward before locking into the Old Regime.

The right regime is the one that fits both your tax bill and your broader financial behaviour — not simply the one with the lowest number this April.

Frequently Asked Questions

Q. Which regime is the default for FY 2026-27?

The New Tax Regime is the default under Section 115BAC. If you want the Old Regime, you must actively choose it — salaried individuals at the time of filing, and business/professional taxpayers via Form 10-IEA.

Q. Can I switch regimes every year?

Salaried individuals with no business income can switch every year without restriction. Those with business or professional income face a stricter rule: once they opt out of the New Regime, they can switch back to it only once in their lifetime.

Q. Is income up to ₹12 lakh really tax-free under the New Regime?

Yes, for taxable income up to ₹12 lakh, the Section 87A rebate (up to ₹60,000) brings tax liability to zero. For salaried individuals, the ₹75,000 standard deduction pushes the effective tax-free gross salary to ₹12.75 lakh.

Q. Can I claim HRA and 80C under the New Regime?

No. The New Regime disallows HRA, 80C, 80D, and most Chapter VI-A deductions. It permits only the standard deduction and the employer's NPS contribution under Section 80CCD(2).

Q. Does the Old Regime still make sense for anyone in 2026?

Yes — primarily for taxpayers with a home loan, high HRA claims, full 80C usage, and health insurance, where combined deductions cross the relevant break-even threshold (roughly ₹4 lakh at lower incomes, rising to ₹7–8 lakh at higher incomes). Senior citizens with sizeable interest or pension income also often benefit.

Q. Did the Income Tax Act, 2025 change how regimes work?

No. The Act, effective 1 April 2026, primarily simplifies language and terminology (introducing the 'Tax Year' concept) and consolidates the six-decade-old 1961 Act. It does not alter slab rates, deductions, or the dual-regime structure.

Q. What happens if I file late — do I lose the rebate?

Filing a belated return can jeopardise certain benefits, including the Section 87A rebate under the New Regime in some cases, along with the ability to carry forward capital or business losses. Filing on time by 31 July of the assessment year is strongly recommended.

The Verdict

For most salaried taxpayers earning up to roughly ₹12–15 lakh with average investment levels, the New Tax Regime now saves more tax — a direct result of the higher ₹75,000 standard deduction and the generous ₹60,000 rebate under Section 87A. The Old Regime still holds real value, but only for taxpayers who genuinely maximise deductions: a home loan, full 80C investments, health insurance, and HRA together need to cross roughly ₹4–8 lakh (depending on income level) before the Old Regime pulls ahead.

There's no universal answer — the smartest move is to run your own numbers each year before filing, since both regimes remain available to salaried individuals annually.

Disclaimer: This article is for general informational purposes only and does not constitute tax or financial advice. Tax outcomes vary by individual circumstances — please consult a qualified chartered accountant or tax advisor, or use the official Income Tax Department calculator, before making a filing decision.