Overview & Core Concept
For FY 2025-26 (AY 2026-27), India provides two parallel structures: the Old Regime with deductions such as 80C, 80D, HRA, and eligible home-loan interest, and the New Regime with revised slabs but fewer exemptions.
The better regime depends on income type and eligible deductions. Use the side-by-side estimate as a starting point, then verify special-rate income, surcharge, marginal relief, and eligibility against current Income Tax Department guidance.
Step-by-Step: How to Use the Calculator
Enter Gross Annual Salary / Income
Input total annual gross earnings before deductions.
Input Old Regime Deductions
Fill in Section 80C (EPF, PPF, ELSS up to ₹1.5L), Section 80D medical insurance, and HRA or home loan interest.
Review Side-by-Side Tax Summary
The engine compares both estimates using FY 2025-26 defaults and highlights the lower result. Advanced controls let you inspect or change the assumed slabs.
Mathematical Formula & Derivation
Variables & Parameters:
| Symbol | Variable Name | Description & Role in Calculation |
|---|---|---|
| Slab Income | Taxable Income in Bracket | Portion of income falling within specific slab thresholds. |
| Rate | Applicable Bracket Rate | Tax percentage for that bracket (e.g. 5%, 10%, 15%, 20%, 30%). |
| Rebate | Section 87A Rebate | For FY 2025-26, up to ₹60,000 for eligible New Regime taxpayers with normal taxable income up to ₹12 Lakhs. |
| Cess | Health & Education Cess | Mandatory 4% surtax. |
Why Our Visual Calculator Outperforms Generic Tools
Compare both regimes transparently with visible assumptions and editable tax brackets.
| Evaluation Metric | Generic Market Calculators | RV Anveshana Visual Suite |
|---|---|---|
| Dual-Column View | ❌ Separate screens or toggles | ✅ Simultaneous live side-by-side comparison |
| Savings Callout | ⚠️ Leaves user to subtract manually | ✅ Instant highlighted winner badge with rupee savings |
| User Privacy | ❌ Mandatory lead form capture | ✅ 100% private, zero data collection |
- Most bank tax calculators force you to switch between separate pages to view both regimes.
- They frequently carry outdated slab rates or missing standard deduction updates.
- They demand phone numbers and emails to send sales calls before showing results.
- Simultaneous dual-column layout: see both regimes update live on one screen.
- Clear callout declaring the winning regime and exact rupees saved.
- Zero signups, no phone number required, 100% confidential in-browser computation.
- Clearly labeled FY 2025-26 defaults with editable advanced slab assumptions.
Practical Case Study & Real Numbers
Case Study: ₹15,00,000 Gross Salary
Pro Tips & Critical Pitfalls
- Calculate your breakeven threshold before locking money into 80C financial products in March.
- Employer NPS under 80CCD(2) is tax-deductible in the New Regime as well.
- Buying poor-yield endowment policies solely to claim 80C tax deductions.
- Assuming the Old Regime is automatically better because of multiple deductions.
Frequently Asked Questions
Sources & Methodology
We use calculator formulas together with guidance from primary public authorities. Review the linked source for current rules, rates, and eligibility details.
- Income tax rules, filing, and taxpayer services Income Tax Department, Government of India
Published February 20, 2026 · Last reviewed September 13, 2026
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