Compare income tax under old regime (with 80C / 80D / HRA / home loan deductions) vs new regime (FY 2026-27 slabs with ₹12L tax-free threshold, ₹60K rebate u/s 87A). Shows side-by-side tax + which regime saves more for your specific deduction profile.
Reviewed by the CalculatorKosh Editorial TeamUpdated June 2026Free · No sign-up
Old vs New Regime Tax Calculator
Compare income tax under old regime (with 80C / 80D / HRA / home loan deductions) vs new regime (FY 2026-27 slabs with ₹12L tax-free threshold, ₹60K rebate u/s 87A). Shows side-by-side tax + which regime saves more for your specific deduction profile.
Income
Annual CTC / salary before any deductions
Interest, rental, capital gains (net)
Deductions (only used for old regime)
Cap ₹1,50,000
Cap ₹50,000
Cap ₹25,000
Cap ₹2,00,000 (self-occupied)
80E / 80G / etc.
Old regime saves
Old regime saves ₹3,900. Old: ₹1,01,400. New: ₹1,05,300.₹3,900
(Old: ₹1,01,400 · New: ₹1,05,300)
Old regime tax
₹1.0 L
New regime tax
₹1.1 L
Savings
₹3,900
Better regime
Old regime
Side-by-side comparison
| Line item | Old ✓ | New |
|---|---|---|
| Gross income | ₹15,50,000 | ₹15,50,000 |
| Standard deduction | − ₹50,000 | − ₹75,000 |
| Other deductions | − ₹5,75,000 | — |
| Taxable income | ₹9,25,000 | ₹14,75,000 |
| Slab tax | ₹97,500 | ₹1,01,250 |
| − 87A rebate | − ₹0 | − ₹0 |
| + 4% cess | + ₹3,900 | + ₹4,050 |
| FINAL TAX | ₹1,01,400 | ₹1,05,300 |
The cross-over point
Break-even deduction = ₹6,06,251. If you have less than this in total old-regime deductions, new regime is better; more than this, old regime wins.
Your current old-regime total deduction is ₹6,25,000 — above the break-even.
Default to new regime
From FY 2023-24, the new regime is the DEFAULT. You must explicitly opt for old regime in your ITR (Form 10-IEA for salaried). The ₹12L zero-tax threshold under new regime (post-Budget 2025) made it dominant for most salaried; check the comparison before filing.
Related calculators
Old vs New — total tax payable
How It Works
This calculator computes your annual income tax under both the old and new tax regimes side-by-side for FY 2026-27 (AY 2027-28) and shows which regime saves more for your specific deduction profile. The new regime under Section 115BAC is the default from FY 2023-24; the old regime requires explicit opt-out via Form 10-IEA for salaried taxpayers.
Key differences
The new regime has lower slab rates and a much higher Section 87A rebate (full rebate up to ₹12L taxable income, capped at ₹60K), but allows almost no itemised deductions — only the ₹75,000 standard deduction (salaried) and the employer NPS contribution u/s 80CCD(2) up to 14% of basic. The old regime uses higher slab rates and a lower ₹50,000 standard deduction, but lets you claim 80C (up to ₹1.5L), 80CCD(1B) (₹50K NPS extra), 80D (₹25K health), 24(b) (₹2L home loan interest), HRA, LTA, and other deductions.
The break-even rule
The break-even deduction depends on your gross income. At ₹15L gross salary, you typically need ₹4-6L of total deductions for the old regime to win; below that, the new regime saves more. This calculator computes the exact break-even for your inputs so you can see how much you would need to deduct to make switching worthwhile.
What this calculator simplifies
Surcharge (applicable above ₹50L) is intentionally out of scope here — use the full Income Tax Calculator for high-income surcharge modelling. The 80D cap is fixed at ₹25K (regular taxpayer); senior-citizen ₹50K bucket is not modelled.
Frequently Asked Questions
It depends on how much you actually deduct. The new regime has lower slab rates and a zero-tax band up to ₹12L taxable income (₹12.75L gross for salaried). The old regime offers itemised deductions (80C up to ₹1.5L, 80D up to ₹25K, 80CCD(1B) NPS up to ₹50K, 24(b) home loan interest up to ₹2L, HRA, LTA) that can knock taxable income down sharply. Rule of thumb at ₹15L gross: if your combined deductions clear roughly ₹4-6L the old regime usually wins, otherwise the new regime wins. The break-even depends on income level — at higher incomes the new regime's lower rates often beat even maximum old-regime deductions.
Part of Income Tax Calculators (FY 2026-27) — compare every related calculator in one place.