Published 9 May 2026
Old Regime versus New Regime -- A Side-by-Side Decision Guide
Finance Act, 2024 (No. 2) restructured the new-regime slabs, kept it the default, and enhanced the standard deduction to INR 75,000. For tax year 2026-27 (financial year 2026-27), the old-regime slabs continue unchanged. The question every salaried taxpayer asks remains the same -- which regime saves you more? This guide answers it with the numbers.
New Regime -- Slab Structure (Default)
The new regime, made default by Finance Act, 2023, offers fewer exemptions but lower base rates. Finance Act, 2024 (No. 2) restructured the slabs effective assessment year 2025-26 onwards.
Income Slab (INR) | Tax Rate | Tax on Slab Income |
|---|---|---|
Up to 3,00,000 | Nil | 0 |
3,00,001 to 7,00,000 | 5% | Up to INR 20,000 |
7,00,001 to 10,00,000 | 10% | Up to INR 30,000 |
10,00,001 to 12,00,000 | 15% | Up to INR 30,000 |
12,00,001 to 15,00,000 | 20% | Up to INR 60,000 |
Above 15,00,000 | 30% | 30% on excess |
Surcharge in the new regime: 10% (income INR 50 lakh to 1 crore); 15% (1 crore to 2 crore); 25% (above 2 crore). Health and education cess: 4% on tax plus surcharge.
Old Regime -- Slab Structure (Election Required)
The old regime offers Chapter VI-A deductions in full -- section 80C, 80D, 80E, 80G, House Rent Allowance, home loan interest, and more. Senior citizens get higher basic exemption thresholds.
Income Slab (INR) | General | Senior Citizen 60+ | Super-Senior Citizen 80+ |
|---|---|---|---|
Up to 2,50,000 | Nil | Nil up to INR 3 lakh | Nil up to INR 5 lakh |
2,50,001 to 5,00,000 | 5% | 5% (3-5 lakh) | Nil |
5,00,001 to 10,00,000 | 20% | 20% | 20% |
Above 10,00,000 | 30% | 30% | 30% |
Surcharge in the old regime: 10% (50 lakh to 1 crore); 15% (1 crore to 2 crore); 25% (2 crore to 5 crore); 37% (above 5 crore). Cess 4%.
Decision Matrix -- Which Regime Wins by Income Band
There is no universal answer; it depends on actual deduction profile.
Total Income | Likely Winner | Why |
|---|---|---|
Up to INR 7 lakh | NEW | Section 87A rebate eliminates tax in new regime |
INR 7-10 lakh | Borderline | Depends on aggregate deductions (target INR 3 lakh or more) |
INR 10-15 lakh | OLD (if INR 3 lakh+ deductions) | Home loan plus section 80C plus section 80D typically tilt old |
INR 15-50 lakh | OLD (if INR 4 lakh+ deductions) | Heavy 80C / 80D / House Rent Allowance / 24(b) profile |
INR 50 lakh-2 crore | Mixed | Surcharge transitions; recompute case by case |
Above INR 5 crore | NEW | Surcharge cap 25% (new) versus 37% (old) saves approximately 12% absolute |
Worked Example 1 -- Salaried at INR 12 Lakh
Profile: Salary INR 12 lakh; section 80C investment INR 1.5 lakh; section 80D INR 25,000; home loan interest under section 24(b) INR 2 lakh.
Item | New Regime (INR) | Old Regime (INR) |
|---|---|---|
Gross Salary | 12,00,000 | 12,00,000 |
Less: Standard Deduction | 75,000 | 50,000 |
Less: Section 80C / 80D / 24(b) | 0 | 3,75,000 |
Taxable Income | 11,25,000 | 7,75,000 |
Tax on Slabs | 68,750 | 67,500 |
Health and Education Cess at 4% | 2,750 | 2,700 |
Total Tax | 71,500 | 70,200 |
Verdict: Old regime saves INR 1,300 -- marginal At INR 12 lakh income with INR 3.75 lakh in deductions, the regimes are nearly tied. Recompute annually under both regimes before filing. |
Worked Example 2 -- Salaried at INR 30 Lakh
Profile: Salary INR 30 lakh; section 80C INR 1.5 lakh; section 80D INR 25,000; home loan interest INR 2 lakh; House Rent Allowance exemption INR 6 lakh.
Item | New Regime (INR) | Old Regime (INR) |
|---|---|---|
Gross Salary | 30,00,000 | 30,00,000 |
Less: Standard Deduction | 75,000 | 50,000 |
Less: House Rent Allowance under section 10(13A) | 0 | 6,00,000 |
Less: Section 80C / 80D / 24(b) | 0 | 3,75,000 |
Taxable Income | 29,25,000 | 19,75,000 |
Tax on Slabs | 5,82,500 | 4,06,250 |
Surcharge | 58,250 (10%) | 0 |
Health and Education Cess at 4% | 25,630 | 16,250 |
Total Tax | 6,66,380 | 4,22,500 |
Verdict: Old regime saves INR 2,43,880 annually -- significant When House Rent Allowance plus home loan plus section 80C / 80D combine to INR 11 lakh+ deductions, the old regime is decisively better. The 10% surcharge in the new regime amplifies the gap. |
Switching Mechanics -- Form 10-IEA
Assessee Category | Switching Frequency | Form Required |
|---|---|---|
Salaried (no profits and gains of business or profession) | Every year | Form 10-IEA before section 139(1) due date |
Profits and gains of business or profession / Professional | ONE-TIME (per Finance Act, 2023) | Form 10-IEA; reverting allowed only ONCE |
Hindu Undivided Family / Association of Persons / Body of Individuals | Same as profits and gains of business or profession rules | Form 10-IEA |
Key Takeaways
- The new regime is the default per Finance Act, 2023; old regime requires Form 10-IEA election.
- Standard deduction: INR 75,000 (new regime) versus INR 50,000 (old regime) -- per Finance Act, 2024.
- Section 87A rebate: zero tax up to INR 7 lakh in the new regime (with marginal relief).
- Old regime needs INR 4 to 5 lakh or more aggregate deductions to consistently win at incomes of INR 12 lakh and above.
- High-net-worth individuals above INR 5 crore: new regime's 25% surcharge cap beats old's 37%.
- Salaried can switch annually; profits-and-gains-of-business-or-profession assessees have ONE-TIME election with restricted reverting.
Disclaimer: This article is for general information only. It does not constitute tax / legal advice. Please consult a qualified Chartered Accountant or tax practitioner for advice specific to your circumstances. The legal position is current as of FA 2024 (No. 2) / FA 2025; subsequent amendments and CBDT notifications may modify the position.