New vs Old Tax Regime FY 2025-26: Which One Saves You More Tax?

Every April, the same question lands in office WhatsApp groups: new regime or old regime? After Budget 2025, the answer has tilted heavily towards the new regime for most salaried people — but "most" is not "all". Let's work through the actual numbers for FY 2025-26 so you can decide in ten minutes, not ten days.

The two regimes in one glance

The new regime (the default) taxes you at lower rates but takes away almost all deductions. For FY 2025-26, the slabs are:

• ₹0 to ₹4 lakh: nil
• ₹4 lakh to ₹8 lakh: 5%
• ₹8 lakh to ₹12 lakh: 10%
• ₹12 lakh to ₹16 lakh: 15%
• ₹16 lakh to ₹20 lakh: 20%
• ₹20 lakh to ₹24 lakh: 25%
• Above ₹24 lakh: 30%

You still get a standard deduction of ₹75,000 on salary, and a Section 87A rebate of up to ₹60,000 if your taxable income is up to ₹12 lakh. Net effect: a salary of up to ₹12.75 lakh can be completely tax-free. We've unpacked that in detail in our guide on how income up to ₹12 lakh is tax-free.

The old regime keeps the higher, older slabs — nil up to ₹2.5 lakh, 5% from ₹2.5 to ₹5 lakh, 20% from ₹5 to ₹10 lakh, and 30% above ₹10 lakh — but lets you claim the full menu of deductions: Section 80C up to ₹1.5 lakh, HRA exemption, home loan interest, 80D health insurance, NPS, and more. Standard deduction here is ₹50,000, and the 87A rebate is only ₹12,500 (for taxable income up to ₹5 lakh).

Both regimes add 4% cess on the tax amount.

Worked examples: four salary levels

Assume gross salary is the only income, and in the old regime the person claims decent deductions.

₹8 lakh salary

• New regime: taxable income ₹7.25 lakh after standard deduction. Slab tax works out to ₹16,250 — but the 87A rebate wipes it out. Tax: ₹0.
• Old regime: even with the full ₹1.5 lakh under 80C, taxable income is ₹6 lakh and tax is about ₹33,800 after cess.

New regime wins, and it isn't close.

₹12 lakh salary

• New regime: taxable income ₹11.25 lakh. Slab tax is ₹52,500, fully covered by the 87A rebate. Tax: ₹0.
• Old regime: with ₹1.5 lakh of 80C plus ₹50,000 NPS, taxable income is around ₹9.5 lakh and tax lands near ₹1.07 lakh after cess.

To match the new regime's zero here, you'd need deductions so large they're unrealistic for most people. New regime wins again.

₹18 lakh salary

• New regime: taxable income ₹17.25 lakh. Tax is ₹1,45,000, or about ₹1,50,800 with cess.
• Old regime: with ₹2.25 lakh of deductions (80C + NPS + 80D), taxable income is ₹15.25 lakh and tax is roughly ₹2,80,800. Even adding a generous HRA exemption of ₹3 lakh only brings it down to about ₹1,87,200.

New regime still ahead — unless your deductions are enormous.

₹30 lakh salary

• New regime: taxable income ₹29.25 lakh. Tax is ₹4,57,500, about ₹4,75,800 with cess.
• Old regime: with a strong ₹4.25 lakh of deductions (80C, NPS, 80D, ₹2 lakh home loan interest), tax is around ₹5,92,800.

New regime wins by over ₹1 lakh.

Want your own numbers instead of ours? Run both regimes side by side in the income tax calculator — it takes about a minute.

The break-even deduction logic

Here's the shortcut. The old regime only beats the new one if your total deductions and exemptions (beyond the standard deduction) are big enough to offset its higher slab rates. Roughly:

• At ₹18 lakh salary, you need upwards of ₹6.5 lakh in deductions to break even.
• At ₹30 lakh salary, the break-even climbs to around ₹8 lakh of total deductions.

That's not 80C-and-done territory. You only get there with a combination of a large HRA exemption (big-city rent), ₹2 lakh of home loan interest, full 80C, NPS, and 80D stacked together.

Rule of thumb: if your deductions don't cross roughly ₹8 lakh at higher incomes, the new regime almost certainly leaves more in your pocket.

Who should still pick the old regime?

A shrinking club, but it exists:

• High rent payers in metros with salaries structured for large HRA. Check your exact exemption with the HRA exemption calculator before deciding.
• Home loan borrowers claiming the full ₹2 lakh interest deduction, especially when stacked with HRA (yes, both can apply in some situations — check with a CA for your case).
• People with legacy commitments — old high-premium insurance policies or loans — that already fill up the deduction buckets.

If none of these describe you, take the new regime and stop collecting rent receipts for tax purposes.

How to actually switch

For salaried folks, the new regime is the default. Your employer will ask for your choice at the start of the year for TDS purposes, but you can still pick the other regime when you file your return. Salaried taxpayers (without business income) can switch between regimes every year at filing time. If you have business or professional income, the rules are stricter — check with a CA.

Once you've picked, sanity-check your monthly take-home so the regime choice, TDS and net pay all line up.

Bottom line

For FY 2025-26, the new regime is the better deal for the large majority of salaried Indians — especially anyone earning up to ₹12.75 lakh, where tax is simply zero. The old regime survives only for people with genuinely heavy deductions: big HRA, big home loan, full 80C, all at once. Do the two-minute comparison, pick your side, and move on with your life.