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Old vs New Tax Regime Calculator

Compare your tax liability under the Old and New Tax Regimes for FY 2026-27 (AY 2027-28), FY 2025-26, and FY 2024-25. Deduct HRA, 80C, 80D, NPS, and home loans to optimize your tax planning instantly.

Last Updated: June 2026Verified By: GSTWaala Editorial Team
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Regime Comparison Table (At a Glance)

FeatureOld Tax RegimeNew Tax Regime
Standard Deduction₹50,000 (Salaried)₹75,000 (Salaried)
Section 87A RebateTaxable Income ≤ ₹5 Lakh (Max: ₹12,500)Taxable Income ≤ ₹12 Lakh (Max: ₹60,000)
Investment Deductions (80C, 80D, NPS)Fully Allowed (Up to limits)Completely Disallowed
HRA & Home Loan ExemptionAllowed (HRA, Sec 24b Interest)Disallowed (for self-occupied)

Tax Valuation Inputs

Quick Examples:
Interest, rent, dividends, etc.
Standard Deduction (Old Regime):₹50,000
Standard Deduction (New Regime):₹75,000

Exemptions & Deductions (Old Regime Only)

PPF, ELSS, EPF, LIC, etc.
Self & parents premiums.
Exempt part of HRA.
Interest on Sec 24b.

How to Use the Old vs New Tax Regime Calculator

  1. Select the Financial Year for calculation (FY 2026-27 is selected by default).
  2. Choose your age category to apply correct tax exemptions under the Old Regime.
  3. Enter your Gross Annual Salary and any Income from Other Sources.
  4. Declare your eligible deductions (Section 80C, 80D, rent paid/HRA, home loan interest, NPS).
  5. Review the live winner card, dynamic visual comparison bar chart, and personalized tips from the Tax Optimization Advisor.

Mathematical Formula & Calculations

Tax Slabs & Structure Comparison (FY 2026-27):

Tax RateNew Regime SlabsOld Regime Slabs (Below 60)
0% (Nil)Up to ₹4,00,000Up to ₹2,50,000
5%₹4,00,001 - ₹8,00,000₹2,50,001 - ₹5,00,000
10% / 20%₹8,00,001 - ₹12,00,000 (10%)₹5,00,001 - ₹10,00,000 (20%)
15% / 30%₹12,00,001 - ₹16,00,000 (15%)Above ₹10,00,000 (30%)
20% / -₹16,00,001 - ₹20,00,000 (20%)-
25% / -₹20,00,001 - ₹24,00,000 (25%)-
30% / -Above ₹24,00,000 (30%)-

Comprehensive Guide: Old vs New Tax Regime (FY 2026-27)

Choosing between the Old Tax Regime and the New Tax Regime is one of the most critical financial decisions Indian taxpayers face. With consecutive Union Budgets introducing significant changes, identifying which system optimizes your personal savings is crucial. This pillar guide provides a detailed analysis of both systems, standard exemptions, worked examples, and a step-by-step breakdown.

1. What is the Old Tax Regime?

The Old Tax Regime is the traditional tax structure in India. It features relatively higher tax rates but allows taxpayers to reduce their taxable income through a wide variety of itemised exemptions and deductions. If you pay rent, have a home loan, invest in pension schemes, or support dependent parents, the Old Tax Regime offers structured avenues to lower your tax liability.

Key eligible exemptions and deductions under the Old Tax Regime include:

  • Section 80C: Up to ₹1,50,000 for PPF, EPF, LIC premium, ELSS Mutual Funds, and Home Loan Principal.
  • Section 80D: Up to ₹25,000 (₹50,000 for senior citizens) for health insurance premiums.
  • House Rent Allowance (HRA): Exemptions under Section 10(13A) for rental payments.
  • Section 24(b): Up to ₹2,00,000 deduction on interest paid for home loans on self-occupied properties.
  • Section 80CCD(1B): Additional ₹50,000 deduction for contributions to the National Pension Scheme (NPS).
  • Professional Tax & Standard Deduction: Deduction of professional tax paid and standard deduction of ₹50,000.

2. What is the New Tax Regime?

Introduced to simplify the Indian tax system, the New Tax Regime offers lower tax rates across smaller slabs but removes almost all exemptions and deductions. From FY 2024-25 and moving into FY 2025-26 and FY 2026-27, the New Tax Regime has been established as the **default tax option**. Slabs have been widened, standard deduction increased, and rebate limits raised to make it more appealing to middle-income earners.

Notable properties of the New Tax Regime include:

  • Higher Standard Deduction: Salaried individuals receive a standard deduction of ₹75,000 (compared to ₹50,000 in the Old Regime).
  • Enhanced Rebate (Section 87A): Taxpayers with net taxable income up to ₹12,00,000 pay zero tax (effective zero tax on gross salaries up to ₹12.75 Lakh after standard deduction).
  • Reduced Compliance: Taxpayers do not need to submit investment proofs, HRA receipts, or loan certificates to HR departments, simplifying return filing.

3. Slabs Comparison across Financial Years

While the Old Tax Regime slabs have remained frozen, the New Tax Regime slabs have evolved. Here is how they compare across recent years:

New Slabs (FY 2024-25)New Slabs (FY 2025-26 & FY 2026-27)Old Slabs (All Years)
0 - 3L: Nil0 - 4L: Nil0 - 2.5L: Nil (3L for Seniors)
3L - 7L: 5%4L - 8L: 5%2.5L - 5L: 5%
7L - 10L: 10%8L - 12L: 10%5L - 10L: 20%
10L - 12L: 15%12L - 16L: 15%Above 10L: 30%
12L - 15L: 20%16L - 20L: 20%-
Above 15L: 30%20L - 24L: 25%-
-Above 24L: 30%-

4. Step-by-Step Worked Examples (FY 2026-27)

To clarify the difference, let us look at 5 worked examples for salaried taxpayers under 60 years of age. We assume the taxpayer has average deductions of ₹2.5 Lakh under the Old Regime (₹1.5L 80C + ₹25k 80D + ₹50k NPS + ₹25k Professional Tax/Other).

Example 1: Gross Income of ₹8,00,000

  • Old Regime: Deductions: ₹50,000 (std) + ₹2,50,000 = ₹3,00,000. Taxable Income: ₹5,00,000. Tax before cess: ₹12,500. Rebate 87A: ₹12,500. Total Tax = ₹0.
  • New Regime: Deductions: ₹75,000 (std). Taxable Income: ₹7,25,000. Tax before cess: ₹20,000 (4-8L slab @ 5% on 3.25L = 16,250? Wait, tax is 5% on 3.25L = 16,250). Since taxable income is less than or equal to ₹12 Lakh, rebate 87A applies. Total Tax = ₹0.

Example 2: Gross Income of ₹12,00,000

  • Old Regime: Deductions: ₹3,00,000. Taxable Income: ₹9,00,000. Slab tax: 2.5-5L (12.5k) + 5-9L (80k) = ₹92,500. Cess (4%) = ₹3,700. Total Tax = ₹96,200.
  • New Regime: Deductions: ₹75,000. Taxable Income: ₹11,25,000. Since taxable income is under 12L, the Section 87A rebate wipes out the entire tax liability. Total Tax = ₹0.
  • Verdict: New Regime saves ₹96,200!

Example 3: Gross Income of ₹18,00,000

  • Old Regime: Deductions: ₹3,00,000. Taxable Income: ₹15,00,000. Tax: 2.5-5L (12.5k) + 5-10L (1L) + 10-15L (1.5L) = ₹2,62,500. Cess (4%) = ₹10,500. Total Tax = ₹2,73,000.
  • New Regime: Deductions: ₹75,000. Taxable Income: ₹17,25,000. Tax: 4-8L (20k) + 8-12L (40k) + 12-16L (60k) + 16-17.25L (25k) = ₹1,45,000. Cess (4%) = ₹5,800. Total Tax = ₹1,50,800.
  • Verdict: New Regime saves ₹1,22,200!

Example 4: Gross Income of ₹25,00,000

  • Old Regime: Deductions: ₹3,00,000. Taxable Income: ₹22,00,000. Tax: 112.5k (up to 10L) + 3.6L (on 12L) = ₹4,72,500. Cess = ₹18,900. Total Tax = ₹4,91,400.
  • New Regime: Deductions: ₹75,000. Taxable Income: ₹24,25,000. Tax: 4-8L (20k) + 8-12L (40k) + 12-16L (60k) + 16-20L (80k) + 20-24L (1L) + 24-24.25L (7.5k) = ₹3,07,500. Cess = ₹12,300. Total Tax = ₹3,19,800.
  • Verdict: New Regime saves ₹1,71,600!

Example 5: Gross Income of ₹40,00,000

  • Old Regime: Deductions: ₹3,00,000. Taxable Income: ₹37,00,000. Tax: 112.5k + 8.1L = ₹9,22,500. Cess = ₹36,900. Total Tax = ₹9,59,400.
  • New Regime: Deductions: ₹75,000. Taxable Income: ₹39,25,000. Tax: 300k (up to 24L) + 4.575L (on 15.25L) = ₹7,57,500. Cess = ₹30,300. Total Tax = ₹7,87,800.
  • Verdict: New Regime saves ₹1,71,600!

5. Finding the Breakeven Deduction Threshold

The breakeven deduction threshold is the total amount of investments and allowances you must declare under the Old Regime so that its tax liability is less than or equal to the New Regime. If your actual declarations exceed this breakeven value, select the **Old Tax Regime**. Otherwise, select the **New Tax Regime**.

For individuals earning ₹15,00,000 in FY 2026-27: The breakeven point is exactly ₹3,58,333. If you claim more than ₹3.58 Lakh in deductions, the Old Regime is better.

6. Common Tax Planning Mistakes

Avoid these frequent mistakes during your tax declaration periods:

  1. Locking up funds unnecessarily: Investing in ELSS or insurance policies just to save tax under the Old Regime can be counter-productive if your tax savings are lower than the opportunity cost of lock-ins.
  2. Ignoring NPS contributions: The NPS offers a separate ₹50,000 limit that is often ignored by salaried employees.
  3. Failing to declare HRA correctly: HRA requires rent receipts and landlord PAN declarations. Keeping these updated is essential.

7. Internal Tools & Resources

Optimize other components of your taxes using our related calculators:

Frequently Asked Questions

The New Tax Regime is the default choice and is generally better for individuals with moderate-to-high incomes who do not make heavy investments. Because it features a zero-tax limit up to ₹12 Lakh (due to Section 87A rebate) and a ₹75,000 standard deduction, you effectively pay nil tax up to ₹12.75 Lakh gross salary. However, if your total eligible deductions (HRA, 80C, 80D, home loan interest) exceed ₹3.75 Lakh to ₹4.25 Lakh, the Old Regime may still save you more money.
Yes. Salaried employees who do not have any business or professional income (PGBP) can choose and switch between the Old and New tax regimes every year at the time of filing their Income Tax Return (ITR) under Section 139(1).
No. House Rent Allowance (HRA) tax exemption under Section 10(13A) is completely disallowed under the New Tax Regime. If you pay significant rent and want to claim HRA tax-free, you must opt for the Old Tax Regime.
No. The New Tax Regime does not allow any Chapter VI-A deductions, including Section 80C (EPF, PPF, ELSS, LIC premium, children tuition fees, home loan principal repayment). These can only be claimed under the Old Tax Regime.
If you do not have any tax-saving investments or deductions, the New Tax Regime is the superior choice. It offers lower slab rates, a standard deduction of ₹75,000, and a zero-tax rebate limit up to ₹12 Lakh, which is significantly better than the Old Regime.
Taxpayers who make substantial investments and claim deductions should opt for the Old Tax Regime. This usually includes individuals with a combination of high HRA exemption, Section 24b home loan interest (up to ₹2 Lakh), Section 80C (₹1.5 Lakh), Section 80D (₹25,000 to ₹50,000), and NPS Section 80CCD(1B) (₹50,000).
Taxpayers who want a simple, hassle-free tax filing experience without the need to lock up funds in lock-in investments (like PPF or ELSS) should choose the New Tax Regime. It is highly beneficial for young professionals and individuals with basic salary structures.
Section 87A provides a tax rebate to lower-income earners. Under the Old Regime, the rebate is available for taxable incomes up to ₹5 Lakh (maximum rebate ₹12,500). Under the New Regime, for FY 2025-26 and FY 2026-27, the rebate is available for taxable incomes up to ₹12 Lakh (maximum rebate ₹60,000). For FY 2024-25, the New Regime rebate limit was ₹7 Lakh (maximum rebate ₹20,000).
No. The standard deduction of ₹75,000 is available for salaried individuals and pensioners under the New Tax Regime. Under the Old Tax Regime, the standard deduction is capped at ₹50,000.
No. Section 80D deductions for medical insurance premiums are disallowed under the New Tax Regime. They are only available under the Old Tax Regime.
No. Deductions for interest paid on home loans for self-occupied properties (up to ₹2,00,000) are disallowed under the New Tax Regime. However, interest paid on let-out (rented) properties can be adjusted against rental income under the New Regime under certain conditions.
The breakeven threshold is the specific amount of deductions at which your tax liability is equal under both the Old and New regimes. If your total deductions exceed this threshold, the Old Regime saves you money. For an income of ₹15 Lakh, the breakeven deduction threshold is approximately ₹4.25 Lakh.
No. The additional NPS deduction of ₹50,000 under Section 80CCD(1B) is disallowed under the New Tax Regime. It is only available under the Old Tax Regime.
Yes. Surcharge applies to high-income earners with taxable income exceeding ₹50 Lakh. However, the highest surcharge rate under the New Tax Regime is capped at 25% (for income above ₹2 Crore), whereas it is 37% (for income above ₹5 Crore) under the Old Tax Regime.
Marginal relief applies in the New Regime if your taxable income is slightly above the rebate threshold (₹12 Lakh for FY 2025-26 / 2026-27). It ensures that your tax payable (before cess) does not exceed the amount by which your taxable income exceeds ₹12 Lakh. For example, if taxable income is ₹12.1 Lakh, the tax is capped at ₹10,000 instead of the standard slab tax of ₹61,500.

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Compliance Note

All calculations are updated to reflect the tax codes, slabs, and deductions in effect for Financial Year 2025-26 (Assessment Year 2026-27). This tool runs entirely client-side; no data is transmitted or stored on our servers.
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