If you’re filing taxes in India this year, you’ve probably run into the same question everyone else has: should you stick with the old tax regime, or switch to the new one? The old vs new tax regime decision isn’t just a formality anymore — for FY 2026-27, the two systems can produce meaningfully different tax bills depending on how much you earn and how many deductions you actually claim. This guide walks through the real differences, a worked example, and how to use an income tax calculator to settle the question for your own numbers.
What’s Actually Different Between the Old and New Tax Regime
The core trade-off in the old vs new tax regime comparison comes down to rates versus deductions. The old regime uses higher tax rates but lets you claim over 70 exemptions and deductions — House Rent Allowance (HRA), Leave Travel Allowance (LTA), Section 80C investments (PPF, ELSS, life insurance), home loan interest, and more. The new regime uses lower, more compressed tax rates but strips out nearly all of those deductions in exchange for simplicity.
Since the Finance Act 2023, the new regime is the default — if you don’t actively opt for the old regime when filing, you’re taxed under the new one automatically.
New Tax Regime Slabs for FY 2026-27
The Union Budget for 2026 kept the same slab structure introduced the previous year. Under the new regime:
- Up to ₹4,00,000 — Nil
- ₹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%
Thanks to a Section 87A rebate of ₹60,000, resident individuals owe no tax on income up to ₹12 lakh. Add the standard deduction of ₹75,000 for salaried employees, and gross salary up to roughly ₹12.75 lakh can be effectively tax-free under the new regime.
Old Tax Regime Slabs and What You Can Still Deduct
The old regime’s basic exemption limit is lower, at ₹2.5 lakh, and its slabs are wider bands taxed at 5%, 20%, and 30%. What makes it competitive isn’t the rate — it’s the deductions stacked on top: Section 80C (up to ₹1.5 lakh for PPF, ELSS, EPF, and similar), HRA if you rent your home, home loan interest under Section 24(b), and health insurance premiums under Section 80D, among others.
A Worked Example: Old vs New Tax Regime
Say you earn ₹15,00,000 a year. Under the new regime, after the standard deduction, you’d be taxed across the slabs above with no other deductions — a relatively simple calculation. Under the old regime, if you’re claiming ₹1.5 lakh under Section 80C, ₹50,000 in home loan interest, and ₹25,000 in health insurance premiums, your taxable income drops meaningfully before the old regime’s rates even apply. Depending on how much you can genuinely claim, the old regime can come out ahead for taxpayers with high deductions, while the new regime tends to win for those with few investments or renters without an HRA claim. Running your own numbers through an income tax calculator is the fastest way to see which side of that line you fall on, since the answer changes with every deduction you add or remove.
Which Should You Choose?
As a rough rule of thumb: if your total eligible deductions (80C, HRA, home loan interest, 80D, and so on) add up to more than roughly ₹3.5–4 lakh, the old regime often works out cheaper. If you don’t have significant deductions — say you don’t own a home, don’t rent, and haven’t maxed out 80C — the new regime’s lower rates usually win. But “usually” isn’t good enough when real money is on the line, which is why plugging your actual salary and deductions into a calculator matters more than following a general rule.
Key Takeaways
- The new tax regime is the default from FY 2023-24 onward; you must actively elect the old regime if you want it.
- New regime: lower rates, virtually no deductions. Old regime: higher rates, but 70+ possible deductions.
- Income up to about ₹12.75 lakh (salaried) is effectively tax-free under the new regime after the rebate and standard deduction.
- Salaried employees can switch between regimes each financial year; those with business income face more restrictions.
Frequently Asked Questions
Can I switch between the old and new tax regime every year?
If you’re a salaried individual with no business income, yes — you can choose whichever regime is more favorable each year when you file. If you have business or professional income, switching is more restricted.
Is the new tax regime always cheaper?
No. It’s usually cheaper for taxpayers with few deductions, but the old regime can still win if you have significant HRA, home loan interest, or 80C investments to claim.
Where can I find the official rules?
The Income Tax Department publishes official FAQs comparing the old and new tax regimes that cover eligibility and switching rules in detail.
For more practical finance breakdowns like this one, browse the rest of our blog, or head straight to the income tax calculator to run your own old vs new tax regime comparison.