Salary & TaxTax

Income Tax Calculator

Compare detailed old and new regime tax for current and previous tax years.

● Calculated privately in your browser
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Reviewed 27 October 2026

Tax rules and official sources

Rates are versioned by tax year and checked against official publications. Budget 2026 made no change to income-tax slabs, rebate, surcharge or cess for Tax Year 2026–27.

Methodology & Logic

How the Income Tax Calculator works

Compare detailed old and new regime tax for current and previous tax years. Below is the exact mathematical or algorithmic model used by this tax utility, along with its key operating assumptions.

Core Formula / LogicTaxable income is calculated after regime-eligible deductions. Slab tax is reduced by any eligible rebate, then surcharge and 4% health and education cess are applied.

Step-by-step workflow

  1. Set your starting capital, rate, or tenure in the Income Tax Calculator controls (or pick a quick INR benchmark preset).
  2. The calculation engine applies Taxable income is calculated after regime-eligible deductions. Slab tax is reduced by any eligible rebate, then surcharge and 4% health and education cess are applied. on every change and separates principal from compounded gains or interest.
  3. Inspect the visual chart breakdown and adjust sliders to stress-test lower returns, higher inflation, or extra prepayments.
Practical Walkthrough

Worked example & key advantages

Example Scenario

For ₹15 lakh salary income, the calculator applies the salary standard deduction, calculates each regime independently and highlights the lower estimated annual liability.

Why use this Income Tax tool

  • Transparent compounding and amortization math (Income Tax) with Indian Lakh and Crore formatting.
  • Side-by-side visual charts showing how tenure, rate resets, or step-ups change lifetime wealth.
  • 100% browser-local execution—your loan, investment, and tax figures are never uploaded or stored on a server.

Important Assumptions & Scope

  • The estimate is for a resident individual below 60 with ordinary slab-rate income.
  • Company benefits should be entered only for eligible, documented exempt values under your employer policy.
  • Car lease and vehicle reimbursements are modeled as separate exempt value and taxable perquisite inputs.
  • Special-rate income, capital gains, agricultural income and relief under treaties are excluded.
  • Only the deduction categories shown are considered.
  • Marginal relief is estimated at surcharge thresholds; consult a professional for complex income.
Common Questions

Frequently Asked Questions — Income Tax

Clear answers to common questions about methodology, edge cases, and privacy.

Which tax regime is the default?

The new regime is the default, but eligible taxpayers can opt for the old regime. The better choice depends on your eligible deductions and income composition.

Why can salary up to ₹12.75 lakh have no tax in the new regime?

For eligible salary income, the ₹75,000 standard deduction can reduce taxable income to the ₹12 lakh rebate threshold. Other income can change the outcome.

How should I enter car lease or company car benefits?

Enter the annual value excluded from taxable salary separately from the taxable car perquisite value shown by your employer. Vehicle rules vary by ownership, category and use pattern.

Does this replace filing advice?

No. It is an educational estimate for ordinary income and does not account for every exemption, special rate or filing circumstance.