Choosing between India's old and new income-tax regimes can have a meaningful impact on the amount of tax you ultimately pay. Salary alone does not determine your tax liability. Deductions, exemptions, other sources of income, age, rebate eligibility, surcharge and Health and Education Cess can all affect the final calculation.

For FY 2026–27, taxpayers can use the LiveWorldMarket Income Tax  Calculator to estimate tax under both regimes and compare the results before making a tax-planning decision.

Calculate Your Income Tax for FY 2026–27

Try the LiveWorldMarket Income Tax Calculator:

https://liveworldmarket.com/personal-finance/income-tax-calculator

The calculator allows you to enter your income and eligible deductions and view estimated tax under both the old and new regimes in one place.

LiveWorldMarket Income Tax Calculator — Tool Snapshot

LiveWorldMarket Income Tax Calculator lets users enter income and eligible deductions and compare estimated tax under the old and new tax regimes.

What the calculator considers

The calculator currently provides fields for:

• Financial year
• Residential status
• Age category
• Salary and pension income
• House-property income
• Interest and other normal income
• Professional tax
• Employer NPS contribution
• HRA and other exempt allowances
• Section 80C deductions
• NPS deduction
• Section 80D health-insurance deduction
• Home-loan interest
• Education-loan interest
• Eligible donations
• Other permitted deductions

The result can then be compared under the two tax regimes.

New Tax Regime Slabs for FY 2026–27

Under the default tax structure applicable for Tax Year 2026–27, the slab rates are:

Tax is calculated progressively. This means moving into a higher slab does not result in your entire income being taxed at that higher rate. Only the portion falling within each slab attracts the corresponding rate.

What Is the Old Tax Regime?

The old tax regime follows the traditional slab structure while allowing taxpayers to claim a wider range of eligible deductions and exemptions.

For an individual below 60 years, the basic old-regime slab structure is:

Different basic exemption thresholds may apply to eligible senior and super-senior citizens under the old regime.

The old regime can remain relevant for taxpayers who can legitimately claim substantial deductions or exemptions, including eligible investments, health-insurance premiums, certain home-loan benefits and other qualifying expenses.

Old vs New Tax Regime: What Is the Difference?

The main difference is the balance between lower tax rates and deductions.

The new regime provides more gradual slab rates and a simpler calculation but restricts many traditional deductions and exemptions.

The old regime has fewer tax slabs and higher rates at some income levels but allows a broader range of eligible deductions.

Therefore, the right comparison should not be based only on your annual salary.

A more useful calculation is:

Gross Income → Permitted Exemptions/Deductions → Taxable Income → Slab Tax → Rebate → Surcharge, if applicable → Cess → Estimated Final Tax

This is why two people with the same annual salary may have different tax outcomes.

Why an Income Tax Calculator Is Useful

Manually comparing the regimes can become complicated when several deductions are involved.

For example, a salaried taxpayer may have Section 80C investments, health-insurance premiums, NPS contributions, home-loan interest and HRA benefits. Another person earning the same salary may have few or none of these deductions.

Instead of assuming one regime is always better, an income-tax calculator allows you to change the inputs and compare the resulting estimated liabilities.

The LiveWorldMarket  calculator presents both regimes so users can evaluate the numbers rather than relying on a general rule.

Try the comparison

Compare Old vs New Tax Regime for FY 2026–27 →

https://liveworldmarket.com/personal-finance/income-tax-calculator

Do Not Confuse FY 2026–27 With AY 2026–27

Taxpayers should pay particular attention to terminology during the transition to the Income Tax Act, 2025.

Tax Year 2026–27 refers to Financial Year 2026–27, beginning on 1 April 2026. Income relating to FY 2025–26 continues to be associated with Assessment Year 2026–27 under the earlier framework.

The Income Tax Department has specifically advised taxpayers to select the correct year while making tax payments during this transition.

Remember Health and Education Cess

Basic slab tax is not necessarily the final amount payable.

Health and Education Cess is generally charged at 4% of income tax plus applicable surcharge. Surcharge may also apply when total income crosses specified higher-income thresholds.

A useful tax calculator should therefore show more than the basic slab calculation. Seeing tax, rebate, surcharge and cess separately makes it easier to understand how the final estimate has been reached.

Capital Gains and Other Special-Rate Income Need Attention

A normal salary-tax calculator may not fully calculate every type of income.

Certain capital gains from shares, mutual funds, property and other assets can be subject to separate tax provisions. Virtual digital assets, lottery income and some other categories may also require special treatment.

Investors should therefore avoid entering all income as ordinary salary or slab-rate income without checking whether special tax rules apply.

The LiveWorldMarket calculator states that its present version focuses on normal slab-rate income and does not attempt to calculate every special-rate category. This is an important limitation to understand before using the result for filing purposes.

Frequently Asked Questions

Is the new tax regime compulsory?

The new/default structure applies unless an eligible taxpayer exercises the permitted option for the alternative regime. The rules for exercising that option can depend on the taxpayer's circumstances, including whether business or professional income is involved.

Can I compare both tax regimes online?

Yes. Enter your income and applicable deductions in the LiveWorldMarket Income Tax  Calculator and compare the estimated liability under both regimes.

Does moving into a higher tax slab mean my entire income is taxed at that rate?

No. Income-tax slabs work progressively. Only the income falling within a particular slab is taxed at the rate applicable to that slab.

Does the calculator replace professional tax advice?

No. It is intended for educational and preliminary tax estimation. Actual tax liability may differ because of special-rate income, loss adjustments, exemptions, surcharge rules, TDS/TCS credits, interest and other individual circumstances.

Final Takeaway

The old-versus-new-regime decision should be based on your own income and deductions rather than a general claim that one regime is always better.

For taxpayers with limited deductions, the default regime may produce a lower estimate in many situations. Taxpayers with substantial legitimate deductions should still calculate both alternatives before deciding.

A side-by-side calculator makes that comparison much easier.

Calculate and compare your estimated income tax:

https://liveworldmarket.com/personal-finance/income-tax-calculator

Disclaimer: This article and calculator are provided for general educational and informational purposes only. They do not constitute tax, legal, accounting or  investment advice. Tax rules and interpretations may change, and individual circumstances can materially affect liability. Verify applicable provisions with the Income Tax Department or consult a qualified tax professional before filing a return or making a tax-related financial decision.