Income Tax Guide FY 2025-26: New vs Old Regime Explained
Every financial year, millions of Indians face the same question: which income tax regime is better — the new regime or the old regime? For FY 2025-26 (AY 2026-27), the answer depends on your specific income and deductions. This guide explains both regimes clearly with the latest slabs.
The Two Tax Regimes
Since FY 2020-21, taxpayers can choose between two income tax regimes:
- Old Regime: Higher tax rates but allows deductions and exemptions (80C, HRA, LTA, etc.)
- New Regime: Lower tax rates but most deductions are not available. This is the default regime from FY 2023-24 onwards.
New Regime Tax Slabs (FY 2025-26)
| Income Slab | Tax Rate |
|---|---|
| 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% |
Key benefit: Rebate under Section 87A makes taxable income up to ₹12,00,000 completely tax-free under the new regime — a significant jump from the ₹7 lakh threshold of FY 2024-25. A standard deduction of ₹75,000 is available for salaried employees, so gross salary up to roughly ₹12.75 lakh can be effectively tax-free.
Old Regime Tax Slabs
| Income Slab | Tax Rate |
|---|---|
| Up to ₹2,50,000 | Nil |
| ₹2,50,001 – ₹5,00,000 | 5% |
| ₹5,00,001 – ₹10,00,000 | 20% |
| Above ₹10,00,000 | 30% |
Standard deduction: ₹50,000. Section 87A rebate available for income up to ₹5 lakh.
Which Regime is Better for You?
The new regime is generally better if your total deductions are below ₹1.5–2 lakh. The old regime may be better if you have significant deductions:
- 80C investments: ₹1.5 lakh (PPF, ELSS, LIC, etc.)
- HRA exemption: depends on rent paid
- Home loan interest: up to ₹2 lakh (Section 24B)
- 80D: health insurance premiums
- NPS contribution: additional ₹50,000 (80CCD)
How the Section 87A Rebate Actually Works
The Section 87A rebate is often misunderstood as a "tax-free slab," but it actually works differently: tax is first calculated normally using the slab rates, and then, if your total taxable income does not exceed the rebate threshold (₹12,00,000 for FY 2025-26 under the new regime), the entire calculated tax is refunded as a rebate — bringing your final liability to zero.
This creates an important cliff effect: someone with taxable income of exactly ₹12,00,000 pays ₹0 tax, but someone with taxable income of ₹12,10,000 does not get a partial rebate — they pay tax on the full slab-wise calculation, though a "marginal relief" provision caps the tax so it doesn't exceed the amount by which income crosses ₹12 lakh. In practice, this marginal relief means the effective tax stays manageable just above the threshold rather than jumping sharply.
Worked Example: New Regime at ₹15,00,000
Consider a salaried individual with an annual income of ₹15,00,000 in FY 2025-26 opting for the new regime:
0–4L: Nil
4L–8L @ 5% = ₹20,000
8L–12L @ 10% = ₹40,000
12L–14.25L @ 15% = ₹33,750
Total tax = ₹93,750 + 4% cess (₹3,750) = ₹97,500
Since taxable income exceeds ₹12,00,000, the 87A rebate does not apply here, and tax is charged as per the slabs above.
Common Deductions Available Only Under the Old Regime
If you're deciding whether the old regime's deductions outweigh the new regime's lower rates, here are the main ones to add up:
- Section 80C (₹1,50,000 limit): EPF, PPF, ELSS mutual funds, life insurance premiums, principal repayment on home loans, children's tuition fees.
- HRA Exemption: Based on actual rent paid, salary, and city of residence (metro cities get a higher exemption rate).
- Section 24(b): Interest on home loan for a self-occupied property, up to ₹2,00,000.
- Section 80D: Health insurance premiums — up to ₹25,000 (self/family), plus an additional ₹25,000–50,000 for parents depending on their age.
- Section 80CCD(1B): An additional ₹50,000 for NPS contributions, over and above the 80C limit.
Adding these up, a taxpayer with a home loan, health insurance, and full 80C investments can easily cross ₹4–5 lakh in total deductions — at which point the old regime often becomes more tax-efficient despite its higher slab rates.
Side-by-Side Comparison: Same Income, Both Regimes
To make the choice concrete, here's how a salaried individual earning ₹12,00,000 a year, with ₹1,50,000 in Section 80C investments and ₹20,000 in health insurance premiums (80D), fares under each regime for FY 2025-26:
| Item | New Regime | Old Regime |
|---|---|---|
| Gross Income | ₹12,00,000 | ₹12,00,000 |
| Standard Deduction | ₹75,000 | ₹50,000 |
| 80C + 80D Deductions | Not allowed | ₹1,70,000 |
| Taxable Income | ₹11,25,000 | ₹9,80,000 |
| Tax Before Cess | ₹0 (87A rebate) | ₹1,08,500 |
| Final Tax Payable | ₹0 | ₹1,12,840 |
At this income level, the new regime is clearly better thanks to the wide 87A rebate — even though the old regime's deductions reduce taxable income, they don't bring the tax down anywhere near zero. The calculation flips only at higher incomes where the rebate no longer applies and larger deductions (home loan interest, HRA) come into play.
How to Actually File Your Return
Regardless of which regime you pick, filing itself follows the same broad steps:
- Collect Form 16 from your employer (or Form 26AS / AIS from the income tax portal if you have multiple income sources).
- Log in to the official e-filing portal (incometax.gov.in) and select the correct ITR form based on your income sources (ITR-1 for most salaried individuals with simple income).
- Choose your regime — remember, the new regime is pre-selected by default, so if you want the old regime, you must actively opt for it during filing.
- Verify pre-filled data against your Form 16 and bank interest certificates, then submit and e-verify (via Aadhaar OTP, net banking, or DSC).
The typical due date for individuals not requiring an audit is 31 July following the end of the financial year, though this has occasionally been extended by the CBDT in past years — always check the current year's official notification.
Frequently Asked Questions
Q: Can I switch between regimes every year?
A: Salaried individuals (with no business income) can choose a different regime each financial year when filing their return. Those with business or professional income face more restrictions on switching back and forth.
Q: Is the new regime compulsory now?
A: The new regime is the default option — if you don't actively choose the old regime while filing your return (or informing your employer for TDS purposes), the new regime applies automatically.
Q: Does the ₹12 lakh rebate mean I can earn up to ₹12.75 lakh tax-free?
A: For salaried employees, yes — the ₹75,000 standard deduction is subtracted first, so a gross salary of ₹12,75,000 reduces to exactly ₹12,00,000 taxable income, which is fully covered by the 87A rebate.
Q: Is the Section 87A rebate available under the old regime too?
A: A similar rebate exists under the old regime, but with a much lower threshold — taxable income up to ₹5,00,000 is tax-free under the old regime, compared to ₹12,00,000 under the new regime, which is one of the biggest reasons the new regime is more attractive for most middle-income taxpayers.
Calculate Your Tax Now
Use our Income Tax Calculator to compare your tax liability under both regimes for FY 2025-26 — enter your income once and see both results instantly.