New Tax Regime vs Old Regime: Which Should You Choose in FY 2025-26?

The Union Budget 2025 made the new tax regime the default option for all taxpayers. That means if you do not actively opt for the old regime, the government will apply the new slab rates automatically. This single change has forced millions of salaried employees and business owners to revisit their tax planning.

Here is an honest, numbers-first comparison.

Slab Rates: New vs Old Regime (FY 2025-26)

New Tax Regime Slabs

Rebate under Section 87A: Nil tax if total income is up to ₹7 lakh (new regime) or ₹5 lakh (old regime).

Old Tax Regime Slabs

Key Deductions Available Under Each Regime

Old Regime Deductions You Lose in New Regime

• Section 80C — Up to ₹1.5L (PPF, ELSS, home loan principal, LIC, tuition fees)
• Section 80D — Medical insurance premium (₹25,000 self + ₹50,000 parents)
• HRA Exemption — Metro / non-metro exemption on rent paid
• Section 24(b) — Interest on home loan (up to ₹2L for self-occupied property)
• LTA — Leave Travel Allowance
• NPS deduction (80CCD) — Additional ₹50,000 for NPS contribution

What Stays in New Regime

• Standard deduction: ₹75,000 (enhanced from ₹50,000)
• Employer NPS contribution under Section 80CCD(2) — up to 14% of basic for government employees, 10% for others
• Family pension exemption
• Gratuity exemption

Who Benefits from the New Regime?

The new regime works best when your total permissible deductions are less than ₹2.75 lakh. For someone earning ₹10 lakh with no investments, no home loan, and no HRA, the new regime gives significant savings.

Example: Salaried Employee, ₹12L Income

Who Benefits from the Old Regime?

If you have maxed out Section 80C (₹1.5L in ELSS/PPF), pay rent in a metro city, are servicing a home loan, and have a dependent parent's mediclaim policy — the old regime aggregate deductions could cross ₹6–7 lakh, making it decisively better.

Example: ₹20L income, high deductions

With ₹20L income and ₹6.55L deductions → Taxable income ₹13.45L → Tax ~₹2.39L (old regime) vs ~₹2.81L (new regime). Old regime saves ₹42,000.

Special Considerations

For Business Owners and Professionals

Self-employed professionals and proprietors have the option to opt in/out of the new regime every year by filing Form 10-IE before the due date. Businesses with income under presumptive taxation (Section 44AD/44ADA) must weigh carefully.

For Senior Citizens (60+)

Super senior citizens lose ₹2L exemption in new regime — so old regime is often better unless investment portfolio is minimal.

For NRI Taxpayers

NRIs can also choose between regimes. However, NRIs cannot claim HRA or LTA, so the gap between regimes narrows. The new regime often works well for NRIs.

How to Decide: A Practical Checklist

1. Sum all your deductions (80C + 80D + HRA + home loan + NPS)
2. Calculate tax under both using a regime calculator
3. Check if you want investment flexibility — new regime removes the "forced savings" compulsion of 80C
4. Confirm with your employer before Form 12BB submission (this locks the regime for TDS)
5. You can still change at ITR filing time (for salaried)

Common Mistakes to Avoid

• Not submitting Form 12BB early — your employer will default to new regime for TDS
• Claiming HRA in new regime — invalid; leads to demand notice
• Forgetting employer's NPS contribution — this IS allowed even in new regime (80CCD(2))
• Assuming old regime is always better — run the numbers every year; your income and investments change

Quick Summary

Neither regime is universally better. The right choice depends entirely on your specific income level, investment commitments, and lifestyle. A 30-minute consultation with a Chartered Accountant often saves 5–10× the fee in tax.