New vs Old Tax Regime — Complete Guide 2025
Everything you need to know to choose the right tax regime for FY 2025-26.
What Changed in Budget 2025
The Union Budget 2025 made the new tax regime more attractive than ever. The key changes for FY 2025-26:
- Standard deduction raised to ₹75,000 under new regime (was ₹50,000)
- Section 87A rebate extended to ₹12 lakh — zero tax on income up to ₹12L taxable
- New regime remains the default — you must actively opt for old regime
This means salaried employees with CTC up to approximately ₹13.7 LPA pay zero income tax under the new regime in FY 2025-26.
New Regime — Tax Slabs FY 2025-26
| Income Slab | Tax Rate |
|---|---|
| Up to ₹4 lakh | 0% |
| ₹4L – ₹8L | 5% |
| ₹8L – ₹12L | 10% |
| ₹12L – ₹16L | 15% |
| ₹16L – ₹20L | 20% |
| ₹20L – ₹24L | 25% |
| Above ₹24L | 30% |
87A Rebate: If taxable income ≤ ₹12L, entire tax liability is waived. Standard deduction of ₹75,000 applies automatically.
Old Regime — Tax Slabs FY 2025-26
| Income Slab | Tax Rate |
|---|---|
| Up to ₹2.5 lakh | 0% |
| ₹2.5L – ₹5L | 5% |
| ₹5L – ₹10L | 20% |
| Above ₹10L | 30% |
Standard deduction of ₹50,000 applies. Old regime allows deductions under 80C, 80D, HRA, home loan interest, NPS etc.
When Old Regime is Better
Old regime beats new regime only when your total deductions are large enough. Here's the break-even by income level:
| Income (LPA) | Break-even Deductions | Verdict |
|---|---|---|
| Up to ₹12L | N/A | New regime always wins (zero tax) |
| ₹15L | ~₹3.5 lakh | New regime usually better |
| ₹20L | ~₹4.5 lakh | Depends on HRA + home loan |
| ₹30L | ~₹6 lakh | Old regime competitive with max deductions |
| ₹50L+ | ~₹8 lakh | Old regime can save ₹1L+ with right structure |
Key Deductions in Old Regime
- Section 80C — PPF, ELSS, EPF, LIC, home loan principal — max ₹1.5 lakh
- Section 80D — Health insurance premium — max ₹25,000 (₹50,000 for senior parents)
- HRA Exemption — 50% of basic (metro) or 40% (non-metro) — for rent payers
- Section 24(b) — Home loan interest — max ₹2 lakh
- NPS 80CCD(1B) — Additional ₹50,000 over 80C limit
How to Decide — 3 Simple Steps
- Calculate your total old regime deductions — add up 80C + 80D + HRA + home loan interest + NPS
- Use the income tax calculator — enter your income and deductions, see both regimes side by side
- Pick the lower tax — it's that simple. No loyalty to any regime.
Important: You can switch between regimes every year if you are salaried. Business owners have more restrictions on switching.
Common Mistakes to Avoid
- Assuming old regime is always better if you have a home loan — at lower incomes, new regime still wins
- Forgetting to submit Form 12BB to your employer — you must declare old regime preference at the start of the year
- Not accounting for employer NPS contribution under 80CCD(2) — this is available in new regime too
- Using last year's deductions to decide — recalculate every April as your rent, insurance, and investments may have changed