Old vs New Tax Regime: Complete Comparison Guide (FY 2026-27)

Old vs New Tax Regime: Quick Overview

The New Regime has lower tax rates but no deductions. The Old Regime has higher rates but allows deductions under Section 80C, 80D, HRA, etc.

India now offers two tax regimes: the Old Regime with various deductions and exemptions, and the New Regime (default from FY 2023-24) with lower rates but almost no deductions.

The New Regime is simpler—just apply the slab rates to your income. The Old Regime requires you to claim deductions (80C, 80D, HRA, LTA, etc.) to reduce taxable income.

Your choice depends on how much you can claim in deductions. If deductions exceed ₹3-4 lakhs, the Old Regime often saves more tax.

New Regime Tax Slabs (FY 2026-27)

The New Regime uses a seven-tier slab structure introduced in Budget 2025 — income up to ₹12L is effectively tax-free thanks to Section 87A rebate.

Standard deduction of ₹75,000 for salaried individuals. No other deductions are allowed in the New Regime (except NPS employer contribution under Section 80CCD(2) and Agniveer corpus).

Section 87A rebate makes income up to ₹12 lakh effectively tax-free. Budget 2026-27 kept this unchanged from FY 2025-26.

Old Regime Tax Slabs (FY 2026-27)

The Old Regime has higher base rates but allows multiple deductions and exemptions — unchanged by Budget 2026-27.

You can claim: Standard deduction (₹50,000), Section 80C (₹1.5L), 80D (₹25-50K), HRA, LTA, home loan interest (₹2L), NPS (₹50K extra under 80CCD(1B)), and more.

Under the new Income Tax Act 2025 (effective April 2026), 80C has been renumbered as Section 123, but the ₹1.5L limit and eligible instruments are identical.

With smart planning, you can reduce taxable income by ₹4-6 lakhs through legitimate deductions.

When Deductions Make the Old Regime Better

The breakeven point depends on your income. Higher income = more deductions needed.

For income up to ₹10L: Old Regime wins if total deductions exceed ₹2.5-3L.

For income ₹10-15L: Old Regime wins if deductions exceed ₹3-4L.

For income above ₹15L: Old Regime wins if deductions exceed ₹4-5L.

Key deductions: 80C investments, home loan EMI, health insurance, HRA exemption, NPS contributions.

Who Should Choose Which Regime?

Your situation determines the best regime for you.

Choose NEW Regime if: You rent-free (no HRA), have no home loan, minimal investments in 80C, want simple tax filing, or your deductions are less than ₹3L.

Choose OLD Regime if: You have high HRA exemption (metro city rent), paying home loan EMI, maximize 80C + 80D + NPS, or total deductions exceed ₹4L.

Salaried individuals can switch regimes every year. Business owners must stick with their choice (with some exceptions).

Rules for Switching Between Regimes

Salaried individuals can switch yearly; business owners have restrictions.

Salaried employees: Can choose regime while filing ITR each year. Inform employer of choice for TDS calculation via Form 12BAA.

Business/Professional income: Once you choose New Regime, you can switch back to Old Regime only once in your lifetime.

Default regime from FY 2023-24 is New Regime. You must explicitly opt for Old Regime if preferred.

Common Mistakes to Avoid

Don't make these errors when choosing your tax regime.

1. Assuming New Regime is always better: It's not! Calculate both before deciding.

2. Forgetting to claim HRA: Many miss this major exemption. HRA can save ₹50K-2L in tax.

3. Not maximizing 80C: ₹1.5L in 80C alone saves ₹46,800 tax (at 30% slab + cess).

4. Ignoring NPS extra benefit: ₹50K additional deduction under 80CCD(1B) in Old Regime.

5. Not informing employer: Results in wrong TDS; you'll face refund delays or balance tax.