PlanivestFin
Tax Planning

Old vs New Tax Regime 2026-27 — Which One Should You Choose?

April 6, 2026•10 min read•By PlanivestFin Team

 

TL;DR

 

  • New regime is now the default from April 2026, but it is not automatically better

  • Salaried individuals with income up to ₹12.75 lakh pay zero tax under the new regime

  • Old regime wins if your total deductions exceed ₹3.5–4 lakh (varies by income)

  • You can switch between regimes every year — this is not a permanent decision

  • Use actual numbers, not assumptions, to decide

 

 

Introduction

 

With the new Income Tax framework in place from April 2026, one question remains central for salaried individuals: should you choose the old tax regime or the new one?

 

While the new regime is now the default, that does not automatically make it the better option. The right choice depends on your income, the deductions you actually claim, and how your salary is structured.

 

This guide breaks down both regimes with real numbers — not just concepts — so you can make an informed decision before informing your employer.

 

 

Understanding the Two Regimes

 

New Tax Regime (Default from April 2026)

 

The new regime is designed to simplify taxation with lower rates and fewer deductions.

 

Tax slabs under the new regime (FY 2026-27):

 

| 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% |

 

Key benefits:

  • Standard deduction of ₹75,000

  • Section 87A rebate: zero tax if income ≤ ₹12 lakh

  • Simpler filing, no need to track investments for tax purposes

 

Old Tax Regime

 

The old regime follows the traditional structure with higher rates but allows substantial deductions.

 

Tax slabs under the old regime (FY 2026-27):

 

| Income Slab | Tax Rate |

|-------------|----------|

| Up to ₹2.5 lakh | 0% |

| ₹2.5L – ₹5L | 5% |

| ₹5L – ₹10L | 20% |

| Above ₹10L | 30% |

 

Key deductions available:

  • Standard deduction: ₹50,000

  • Section 80C: up to ₹1.5 lakh (PPF, ELSS, LIC, EPF, home loan principal)

  • Section 80D: up to ₹25,000 (health insurance), ₹50,000 for parents

  • HRA exemption (based on rent paid and city)

  • Home loan interest under Section 24(b): up to ₹2 lakh

 

 

Key Difference — Simplicity vs Flexibility

 

| Aspect | New Regime | Old Regime |

|--------|------------|------------|

| Complexity | Low | High |

| Deductions | Standard deduction only | Extensive |

| Tax rates | Lower slabs | Higher slabs |

| Planning required | Minimal | Significant |

| Best for | Simpler tax situations | Active investors and claimants |

 

The new regime gives you lower rates. The old regime gives you more control.

 

 

Worked Examples — Real Numbers

 

Case 1: ₹8 Lakh CTC — New Regime Wins Clearly

 

Assumptions: Minimal investments, no HRA claim, no home loan.

 

| | New Regime | Old Regime |

|-|------------|------------|

| Gross Income | ₹8,00,000 | ₹8,00,000 |

| Standard Deduction | ₹75,000 | ₹50,000 |

| 80C Deduction | None | ₹50,000 (basic EPF) |

| Taxable Income | ₹7,25,000 | ₹7,00,000 |

| Tax Before Rebate | ₹16,250 | ₹52,500 |

| Rebate (87A) | ₹0 | ₹12,500 |

| Tax + Cess (4%) | ₹16,900 | ₹41,600 |

| Savings with New Regime | ₹24,700/year | — |

 

Verdict: New regime saves ₹24,700 per year. Clear winner.

 

 

Case 2: ₹12 Lakh CTC — New Regime Still Wins

 

Assumptions: Some investments, basic EPF, no HRA.

 

| | New Regime | Old Regime |

|-|------------|------------|

| Gross Income | ₹12,00,000 | ₹12,00,000 |

| Standard Deduction | ₹75,000 | ₹50,000 |

| 80C Deduction | None | ₹1,50,000 |

| Taxable Income | ₹11,25,000 | ₹10,00,000 |

| Tax Before Rebate | ₹0 (rebate applies) | ₹1,12,500 |

| Tax + Cess (4%) | ₹0 | ₹1,17,000 |

| Savings with New Regime | ₹1,17,000/year | — |

 

Verdict: New regime saves over ₹1 lakh per year. No contest at this income level.

 

 

Case 3: ₹18 Lakh CTC — It Depends on Your Deductions

 

Assumptions: HRA of ₹1.2L, 80C of ₹1.5L, 80D of ₹25K, no home loan.

 

| | New Regime | Old Regime |

|-|------------|------------|

| Gross Income | ₹18,00,000 | ₹18,00,000 |

| Standard Deduction | ₹75,000 | ₹50,000 |

| HRA Exemption | None | ₹1,20,000 |

| 80C Deduction | None | ₹1,50,000 |

| 80D Deduction | None | ₹25,000 |

| Taxable Income | ₹17,25,000 | ₹14,55,000 |

| Tax + Cess (4%) | ₹2,99,000 | ₹2,88,000 |

| Savings with Old Regime | — | ₹11,000/year |

 

Verdict: Old regime saves ₹11,000 per year — but only marginally. Adding a home loan or higher HRA would widen the gap significantly.

 

 

Case 4: ₹25 Lakh CTC — Old Regime Wins with High Deductions

 

Assumptions: HRA ₹1.8L, 80C ₹1.5L, 80D ₹50K, home loan interest ₹2L.

 

| | New Regime | Old Regime |

|-|------------|------------|

| Gross Income | ₹25,00,000 | ₹25,00,000 |

| Standard Deduction | ₹75,000 | ₹50,000 |

| HRA Exemption | None | ₹1,80,000 |

| 80C Deduction | None | ₹1,50,000 |

| 80D Deduction | None | ₹50,000 |

| Home Loan Interest (24b) | None | ₹2,00,000 |

| Taxable Income | ₹24,25,000 | ₹18,70,000 |

| Tax + Cess (4%) | ₹5,65,000 | ₹4,15,000 |

| Savings with Old Regime | — | ₹1,50,000/year |

 

Verdict: Old regime saves ₹1.5 lakh per year when deductions are maxed. This is the case for a typical 35-40 year old with a home loan and family health insurance.

 

 

The Break-Even Point — When Does Old Regime Start Winning?

 

As a rough guide for different income levels:

 

| Annual Income | Old Regime Wins When Total Deductions Exceed |

|---------------|----------------------------------------------|

| ₹10 lakh | ₹3.5 lakh |

| ₹15 lakh | ₹3.75 lakh |

| ₹20 lakh | ₹4 lakh |

| ₹25 lakh+ | ₹4.5 lakh |

 

If your combined deductions (HRA + 80C + 80D + home loan interest) exceed these thresholds, old regime is better. If not, go with the new regime.

 

 

When the New Regime Makes Sense

 

Choose the new regime if:

  • Your income is below ₹12.75 lakh (zero tax — clear winner)

  • You don't claim HRA or your HRA exemption is small

  • You have no home loan

  • You invest in market-linked products (SIP, stocks) rather than tax-driven ones (PPF, ELSS, LIC)

  • You prefer simplicity in tax filing

 

 

When the Old Regime Makes Sense

 

Choose the old regime if:

  • You actively claim HRA in a metro city (₹1 lakh+ exemption)

  • You max out Section 80C investments (₹1.5 lakh)

  • You have a home loan with significant interest payments

  • You pay health insurance for self and parents (₹50,000–₹75,000 deduction)

  • Your combined deductions exceed the break-even thresholds above

 

 

Common Mistakes to Avoid

 

Choosing the default without calculating. Many employees let their employer deduct TDS under the new regime without ever checking if the old regime would save more. This is the most expensive mistake — it costs people ₹50,000 to ₹1.5 lakh per year.

 

Assuming deductions automatically make old regime better. Having PPF and ELSS investments does not guarantee old regime wins. You need to run the actual numbers.

 

Ignoring salary restructuring. Even under the new regime, some components like NPS employer contribution (Section 80CCD(2)) are deductible. If your employer allows restructuring, this can significantly reduce tax under the new regime without switching to old.

 

Not reviewing annually. Your income, HRA, investments, and deductions change every year. A decision that was right in FY 2025-26 may not be right in FY 2026-27.

 

 

Final Thoughts

 

There is no universal "better" regime. The right answer is the one that results in lower tax after accounting for your actual income and actual deductions — not assumed ones.

 

The smartest approach is simple: calculate both, pick the lower number, inform your employer at the start of the financial year, and review again next April.

 

Use the Salary Calculator on PlanivestFin to estimate your in-hand salary under both regimes and see exactly which one works better for your situation.

 

 

Frequently Asked Questions

 

Is the new tax regime mandatory from April 2026?

 

No. The new regime is the default, which means it applies if you do not actively choose otherwise. But you can opt for the old regime by informing your employer at the start of the financial year. Salaried individuals can switch between regimes annually.

 

Can I switch between regimes every year?

 

Yes, salaried individuals and pensioners can switch between the old and new regime each financial year. However, if you have business income, switching back to the old regime after choosing the new one is not straightforward and has restrictions.

 

Which regime gives higher take-home salary?

 

It depends on your income and deductions. For most people earning below ₹12.75 lakh with limited deductions, the new regime gives higher take-home because of zero tax liability. For higher earners with significant HRA, home loan, and 80C claims, the old regime can save ₹1 lakh or more annually. Run the numbers using the worked examples above or use the Salary Calculator for your specific situation.