- Gross total income
- ₹15,00,000
- Standard deduction
- − ₹75,000
- Other allowed deductions
- − ₹0
- Taxable income
- ₹14,25,000
- Tax before rebate
- ₹93,750
- Rebate / marginal relief
- − ₹0
- Surcharge
- ₹0
- Health & education cess
- ₹3,750
Old vs New Tax Regime Calculator
Side-by-side comparison of Old and New Indian Income Tax Regimes for FY 2025–26 and FY 2026–27 with 80C, 80D, HRA, and NPS deductions.
How the Old vs New Tax Regime Calculator works
Side-by-side comparison of Old and New Indian Income Tax Regimes for FY 2025–26 and FY 2026–27 with 80C, 80D, HRA, and NPS deductions. Below is the exact mathematical or algorithmic model used by this tax utility, along with its key operating assumptions.
Computes slab tax, Section 87A rebate, marginal relief surcharge, and 4% cess independently under both regimes.Step-by-step workflow
- Set your starting capital, rate, or tenure in the Old vs New Tax Regime Calculator controls (or pick a quick INR benchmark preset).
- The calculation engine applies Computes slab tax, Section 87A rebate, marginal relief surcharge, and 4% cess independently under both regimes. on every change and separates principal from compounded gains or interest.
- Inspect the visual chart breakdown and adjust sliders to stress-test lower returns, higher inflation, or extra prepayments.
Worked example & key advantages
Find the exact deduction breakeven point where claiming HRA, 80C, and home loan interest makes the Old Regime cheaper than the New Regime.
Why use this Old vs New Tax tool
- Transparent compounding and amortization math (Old vs New 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
- Uses official FY 2025–26 and FY 2026–27 Indian Union Budget slabs.
Frequently Asked Questions — Old vs New Tax
Clear answers to common questions about methodology, edge cases, and privacy.
How much deduction do I need for the Old Regime to beat the New Regime?
For salaries above ₹15 Lakh, you typically need ₹3.75 Lakh to ₹4.25 Lakh+ in combined exemptions (HRA + 80C + 80D + Home Loan Interest) for the Old Regime to result in lower tax.
Does the Old vs New Tax Regime Calculator send my financial or salary data to a server?
No. All calculations inside the Old vs New Tax Regime Calculator run 100% locally in your browser using deterministic TypeScript formulas. Your income, loan, or investment figures are never uploaded, stored, or shared.
How can I share or bookmark a scenario in the Old vs New Tax?
Click '☆ Save to Workspace' in the header to pin the Old vs New Tax to your local browser dashboard, or copy the page URL to reference this utility anytime.