What Is the Old vs New Tax Regime Decision?
Every salaried employee in India chooses, once per financial year, between two ways of being taxed: the old regime, which allows deductions like 80C and HRA in exchange for higher slab rates, and the new regime, which has lower slab rates but almost no deductions. The right choice depends entirely on how much you can claim under the old regime — there is no single answer that applies to everyone.
Choosing wrong can cost tens of thousands of rupees a year. This guide compares both regimes using the FY 2025-26 slabs, walks through three salary levels (10 LPA, 15 LPA, 25 LPA), and gives a direct rule for deciding which one applies to you.
What Is the Old Tax Regime?
The old tax regime is the original income tax framework, which allows taxpayers to claim deductions and exemptions to reduce taxable income. It includes:
- Standard deduction of ₹50,000 for salaried employees.
- Section 80C investments up to ₹1.5 lakh (EPF, PPF, ELSS, life insurance, and others).
- HRA exemption for employees who pay rent.
- Home loan interest deduction under Section 24(b), up to ₹2 lakh for a self-occupied property.
- Wider tax slabs, with rates that rise faster as income increases.
The old regime suits taxpayers who actively use 80C, HRA, or home loan deductions.
What Is the New Tax Regime?
The new tax regime is the default option since FY 2023-24. It offers lower rates across more, narrower slabs, but removes almost every deduction available under the old regime:
- No Section 80C deduction.
- No HRA exemption.
- No home loan interest deduction under Section 24(b).
- A standard deduction of ₹75,000 for FY 2025-26 — the one deduction it does allow.
The new regime suits taxpayers with few deductions to claim, or who prefer a simpler filing process.
Tax Slab Comparison — FY 2025-26
| Income Range (₹) | Old Regime Rate | New Regime Rate |
|---|
| 0 – 2,50,000 | 0% | 0% (0 – 4,00,000) |
| 2,50,001 – 5,00,000 | 5% | 5% (4,00,001 – 8,00,000) |
| 5,00,001 – 10,00,000 | 20% | 10% (8,00,001 – 12,00,000) |
| 10,00,001 – 15,00,000 | 30% | 15% (12,00,001 – 16,00,000) |
| 15,00,001 – 20,00,000 | 30% | 20% (16,00,001 – 20,00,000) |
| Above 20,00,000 | 30% | 25% (20,00,001 – 24,00,000) |
| — | — | 30% (Above 24,00,000) |
A 4% Health and Education Cess applies on top of the calculated tax in both regimes, plus any applicable surcharge at higher incomes.
Assumptions Used in the Worked Examples Below
- Annual salary is treated as CTC, with no separate variable-pay adjustment, to keep the math reproducible.
- Old regime: standard deduction ₹50,000, 80C investments (including employee PF) ₹1,50,000, and NPS 80CCD(1B) ₹50,000 — a combined ₹2,50,000 in deductions, representing an employee who actively invests.
- New regime: no deductions beyond the ₹75,000 standard deduction, since the new regime does not allow 80C, HRA, or home loan interest.
- 4% cess is added to the final tax figure in both regimes.
These assumptions describe a salaried employee who contributes to EPF, invests in 80C instruments, and adds NPS — not the maximum possible deduction stack, which would include HRA and home loan interest on top of this.
Worked Example: 10 LPA (₹10,00,000 per year)
Old regime: Deductions ₹2,50,000. Taxable income = ₹7,50,000.
- 0–2.5L: ₹0
- 2.5L–5L: ₹2.5L × 5% = ₹12,500
- 5L–7.5L: ₹2.5L × 20% = ₹50,000
- Subtotal: ₹62,500 → with 4% cess ≈ ₹65,000
New regime: No deductions beyond standard deduction (₹75,000, already reflected in the slab structure above for this comparison). Taxable income = ₹10,00,000.
- 0–3L: ₹0
- 3L–6L: ₹3L × 5% = ₹15,000
- 6L–9L: ₹3L × 10% = ₹30,000
- 9L–10L: ₹1L × 15% = ₹15,000
- Subtotal: ₹60,000 → with 4% cess ≈ ₹62,400
At 10 LPA with this deduction profile, the new regime saves approximately ₹2,600. An employee with larger deductions — significant HRA or a home loan — could still come out ahead under the old regime; this example does not include those.
Worked Example: 15 LPA (₹15,00,000 per year)
Old regime: Deductions ₹2,50,000. Taxable income = ₹12,50,000.
- 0–2.5L: ₹0
- 2.5L–5L: ₹12,500
- 5L–10L: ₹5L × 20% = ₹1,00,000
- 10L–12.5L: ₹2.5L × 30% = ₹75,000
- Subtotal: ₹1,87,500 → with 4% cess ≈ ₹1,95,000
New regime: Taxable income = ₹15,00,000.
- 3L–6L: ₹15,000
- 6L–9L: ₹30,000
- 9L–12L: ₹45,000
- 12L–15L: ₹60,000
- Subtotal: ₹1,50,000 → with 4% cess ≈ ₹1,56,000
At 15 LPA with this deduction profile, the new regime saves approximately ₹39,000. An employee with full HRA exemption and a home loan in this bracket would need to recompute — those two deductions alone can be worth ₹50,000–80,000 a year and can flip the result toward the old regime.
Worked Example: 25 LPA (₹25,00,000 per year)
Old regime: Deductions ₹2,50,000. Taxable income = ₹22,50,000.
- 2.5L–5L: ₹12,500
- 5L–10L: ₹1,00,000
- 10L–22.5L: ₹12.5L × 30% = ₹3,75,000
- Subtotal: ₹4,87,500 → with 4% cess ≈ ₹5,07,000
New regime: Taxable income = ₹25,00,000.
- 3L–6L: ₹15,000; 6L–9L: ₹30,000; 9L–12L: ₹45,000; 12L–15L: ₹60,000; Above 15L: ₹10L × 30% = ₹3,00,000
- Subtotal: ₹4,50,000 → with 4% cess ≈ ₹4,68,000
At 25 LPA with this deduction profile, the new regime again comes out ahead by approximately ₹39,000. A taxpayer with substantial home loan interest, large 80C investments, and metro HRA could still find the old regime cheaper — run the comparison with your own numbers using the salary calculator.
Deductions Available, by Regime
| Deduction | Old Regime | New Regime |
|---|
| Standard Deduction | ₹50,000 | ₹75,000 (automatic) |
| Section 80C (up to ₹1.5L) | Yes | Not available |
| Section 80CCD(1B) — NPS ₹50,000 | Yes | Not available |
| HRA exemption | Yes | Not available |
| Home loan interest (Section 24(b)) | Yes | Not available |
| Employer NPS contribution (80CCD(2)) | Yes | Yes |
The more you claim under 80C, HRA, and home loan interest, the more the old regime tilts in your favour. For the full list of deductions and how to stack them, see Best Ways to Save Tax.
Who Should Choose the Old Regime?
- You claim close to or above ₹1.5 lakh under 80C, plus the standard deduction and home loan interest.
- You pay rent and HRA meaningfully reduces your taxable income.
- You have a home loan on a self-occupied property with significant annual interest.
- You actively use tax-advantaged, long-term instruments like PF, PPF, or ELSS and want to keep claiming the exemptions tied to them.
Quick check: if your standard deduction + 80C + NPS + home loan interest exceeds roughly ₹2–2.5 lakh at your income level, the old regime is likely cheaper — confirm with the calculator.
Who Should Choose the New Regime?
- You have few tax-saving investments and prefer simpler annual filing.
- You are early or mid-career without a home loan or significant HRA.
- You do not want to lock money into 80C instruments purely to chase a deduction.
Quick check: if your realistic annual deductions are well under ₹1.5 lakh, compute both regimes — the new regime usually wins for straightforward salary structures.
Common Mistakes Taxpayers Make
From payroll teams: The most common mid-year confusion arises when an employee joins in June or July and declares their regime preference without knowing whether their previous employer used the old or new regime. When filing ITR, they discover their two Form 16s are from different regimes — which is technically not allowed since regime is chosen for the full financial year. They must file under one regime and adjust accordingly, often resulting in additional tax or a smaller refund than expected.
From tax filings: Employees earning ₹7 to ₹10 LPA who choose the new regime because the slab rates look lower sometimes miss the Section 87A rebate calculation under the old regime. For someone with ₹7.5 lakh taxable income and ₹1.5 lakh in 80C deductions, taxable income under the old regime drops to ₹6 lakh — below the ₹7 lakh threshold that triggers Section 87A rebate, resulting in zero tax. Under the new regime with standard deduction only, tax is positive. The old regime is the better outcome, despite the perception that new regime rates are lower.
Double-counting EPF as separate from 80C. Employee PF normally falls under the 80C limit, not on top of it.
Forgetting Section 87A. The rebate under Section 87A can zero out tax liability for lower incomes in either regime — always check if your taxable income qualifies before assuming you owe tax. Under the new regime for FY 2025-26, total income up to ₹12 lakh triggers a full ₹60,000 rebate. See Section 87A Rebate Explained for conditions, STCG/LTCG exclusions, and marginal relief.
Assuming one regime is always better. The optimal choice changes with income, a new home loan, a move to a higher-rent city, or a salary hike.
Not recomputing every year. A regime that was optimal last year can flip after a raise, a new dependent, or paying off a home loan.
Frequently Asked Questions
Can I switch between regimes every year?
Yes. Salaried individuals can choose the regime each financial year when filing returns or declaring to their employer. Taxpayers with business income face different switching rules.
Does the new regime allow any deductions at all?
Yes, but very few: the ₹75,000 standard deduction and employer NPS contributions under Section 80CCD(2). Section 80C, HRA, and home loan interest are not available.
How do I decide quickly which regime to pick?
Calculate taxable income under the old regime after your realistic deductions, compute tax under both regimes including cess, and pick the lower number. The salary calculator automates this with your exact CTC and deductions.
Does HRA help in the new regime?
No. HRA exemption is not available under the new regime — HRA only reduces tax under the old regime.
Sources Used
Last reviewed: June 17, 2026, by the PaisaPilotAI Editorial Team. Tax laws change with each Union Budget — confirm final figures against official notifications or a qualified tax professional before filing.
Try the Calculator
Use the salary calculator to test both regimes with your exact CTC, PF, and deductions, and see precise take-home, monthly PF, and tax comparisons side by side. For the full deduction list and other tax-planning topics, see the Tax Planning Hub.
