Overview
India runs two parallel personal income tax regimes for individuals and Hindu Undivided Families (HUFs). The Old Tax Regime has been in place for decades, offering dozens of deductions and exemptions that reward structured savings and investment. The New Tax Regime, introduced in FY 2020-21 and made the default from FY 2023-24, trades those deductions for lower slab rates and a higher rebate ceiling.
Picking the wrong regime costs real money. A salaried employee at Rs 15 lakh who picks the wrong option could pay Rs 10,000-30,000 more in tax than necessary. This comparison lays out the full picture, slabs, deductions, worked examples, and a break-even analysis, so you can make the right call for FY 2026-27.
Use the Income Tax Calculator to run your own numbers once you've read through the comparison below.
Tax Regime Comparison: Old vs New (FY 2026-27)
| Dimension | Old Tax Regime | New Tax Regime |
|---|---|---|
| Tax Slabs | Up to Rs 2.5L: Nil; Rs 2.5-5L: 5%; Rs 5-10L: 20%; Above Rs 10L: 30% | Up to Rs 4L: Nil; Rs 4-8L: 5%; Rs 8-12L: 10%; Rs 12-16L: 15%; Rs 16-20L: 20%; Rs 20-24L: 25%; Above Rs 24L: 30% |
| Default Status | Must opt in explicitly | Default regime since FY 2023-24 |
| Standard Deduction | Rs 50,000 | Rs 75,000 |
| HRA Exemption | Available under Section 10(13A) | Not available |
| Section 80C (up to Rs 1.5L) | Available (PPF, ELSS, LIC, EPF, NSC, etc.) | Not available |
| Section 80D (health insurance) | Up to Rs 25,000 self; Rs 50,000 senior citizen parents | Not available |
| NPS, Section 80CCD(1B) | Rs 50,000 additional deduction | Not available (employer contribution under 80CCD(2) still allowed) |
| Home Loan Interest, Section 24B | Up to Rs 2 lakh deduction | Not available |
| Rebate under Section 87A | Up to Rs 12,500 for income below Rs 5L | Up to Rs 60,000 for income below Rs 12L |
Old Tax Regime: Deep Dive
The Old Tax Regime rewards taxpayers who actively channel money into tax-saving instruments. Its slab structure runs steeper, 20% kicks in at Rs 5 lakh and 30% at Rs 10 lakh, but its deduction framework can dramatically reduce your taxable income before those rates apply.
Who benefits most
Salaried employees paying high rent in metro cities who claim a large HRA exemption tend to do well here. So do individuals with home loans, where Section 24B gives up to Rs 2 lakh in interest deduction, and anyone maximising Section 80C through PPF, ELSS, EPF top-up, or LIC premiums. Taxpayers contributing to NPS who claim the extra Rs 50,000 under Section 80CCD(1B) benefit too, along with people whose parents are above 60 and who pay health insurance premiums (80D up to Rs 50,000 for senior parents).
Worked example: Rs 15 lakh gross salary
A salaried employee in a metro with the following profile:
- Gross salary: Rs 15,00,000
- HRA exemption: Rs 3,00,000 (40% of basic, actual rent paid, 10% basic rule, whichever is lowest)
- Standard deduction: Rs 50,000
- Section 80C: Rs 1,50,000 (ELSS + EPF + LIC)
- Section 80CCD(1B) NPS: Rs 50,000
- Section 80D health insurance: Rs 25,000
Taxable income: Rs 15,00,000 minus Rs 50,000 minus Rs 3,00,000 minus Rs 1,50,000 minus Rs 50,000 minus Rs 25,000 = Rs 9,25,000
Tax calculation:
- Rs 0-2.5L: Nil = Rs 0
- Rs 2.5-5L at 5%: Rs 12,500
- Rs 5-9.25L at 20%: Rs 85,000
- Total tax before cess: Rs 97,500
- Add 4% health and education cess: Rs 3,900
- Total tax payable: Rs 1,01,400
New Tax Regime: Deep Dive
The New Tax Regime is built around simplicity and lower rates. You give up most deductions and exemptions, but the slab structure distributes the tax burden more gradually, especially for income between Rs 8-24 lakh, and the Section 87A rebate zeroes out tax entirely for net income up to Rs 12 lakh.
Who benefits most
Early-career employees with income below Rs 12.75 lakh pay zero tax here after the standard deduction. Salaried employees with company-provided accommodation who can't claim HRA anyway lose nothing by switching. Individuals with few or no investments in 80C instruments, high earners above Rs 20 lakh with normal (not maximised) deductions, and self-employed professionals who'd rather skip deduction tracking round out the list.
Worked example: same Rs 15 lakh gross salary
Same employee, new regime:
- Gross salary: Rs 15,00,000
- Standard deduction: Rs 75,000
- Taxable income: Rs 14,25,000
Tax calculation:
- Rs 0-4L: Nil = Rs 0
- Rs 4-8L at 5%: Rs 20,000
- Rs 8-12L at 10%: Rs 40,000
- Rs 12-14.25L at 15%: Rs 33,750
- Total tax before cess: Rs 93,750
- Add 4% cess: Rs 3,750
- Total tax payable: Rs 97,500
That's Rs 97,500 under the new regime against Rs 1,01,400 under the old regime. The new regime saves Rs 3,900 in this example. But this employee had Rs 3 lakh HRA. Push HRA up to Rs 4 lakh and the old regime wins by a wide margin instead. The break-even point moves with every rupee of deduction.
Numbers Head-to-Head
Rs 10 lakh gross salary
| Scenario | Old Regime Tax | New Regime Tax |
|---|---|---|
| Full 80C (Rs 1.5L) + HRA (Rs 1.5L) + 80D (Rs 25K) + standard deduction | ~Rs 20,800 | ~Rs 24,700 |
| Only standard deduction, no other deductions | ~Rs 54,600 | ~Rs 24,700 |
With a full deduction stack at Rs 10 lakh, the old regime saves roughly Rs 3,900. With minimal deductions, the new regime saves Rs 29,900.
Rs 20 lakh gross salary
| Scenario | Old Regime Tax | New Regime Tax |
|---|---|---|
| Full deductions (80C + HRA Rs 2L + 80D + NPS + home loan) | ~Rs 1,40,400 | ~Rs 1,89,800 |
| Minimal deductions (only standard deduction) | ~Rs 2,53,500 | ~Rs 2,28,800 |
At Rs 20 lakh with maximum deductions, the old regime saves over Rs 49,000. With minimal deductions, the new regime saves Rs 24,700.
Run your precise scenario on the Income Tax Calculator, changing the deduction inputs to see which regime wins for your specific numbers.
The Break-Even Rule
The old regime beats the new regime once your total additional deductions (everything beyond the standard deduction) exceed approximately Rs 3.75 lakh. Below that threshold, the new regime's lower slab rates and higher rebate come out ahead.
Most taxpayers claiming Rs 1.5L under 80C, Rs 50K under NPS 80CCD(1B), Rs 25K under 80D, and Rs 1L+ under HRA or home loan interest will find their old regime total deductions easily cross Rs 3.25-3.75 lakh, which makes the old regime the better choice.
If you're a young professional with no home loan, only mandatory EPF contributions, no NPS, and living in company accommodation, your deductions might amount to just the standard deduction, in which case the new regime is clearly better.
Key Terms
- Section 80C: Deduction for specified investments and expenses up to Rs 1.5 lakh per financial year
- HRA: House Rent Allowance, a salary component partly exempt from tax if you pay rent
- Standard Deduction: A flat deduction from salary income (Rs 50,000 old regime, Rs 75,000 new regime) with no proof required
- Surcharge: Additional tax levied on high-income taxpayers above Rs 50 lakh; applies under both regimes
Verdict
Choose the Old Tax Regime if your total deductions (80C + HRA + 80D + NPS + home loan + others) exceed Rs 3.75 lakh, you pay high rent in a metro city with a substantial HRA exemption, you carry an active home loan with interest payments near Rs 2 lakh per year, or you systematically invest Rs 1.5 lakh under Section 80C every year.
Choose the New Tax Regime if your income sits below Rs 12.75 lakh (zero tax after the Rs 75,000 standard deduction), you have few investments in 80C instruments and no home loan interest, you live in company-provided accommodation and can't claim HRA, your income is above Rs 20 lakh with average (not maximised) deductions, or you'd simply rather not track and prove multiple deductions.
For most new hires and early-career employees, the new regime is the safe default. Experienced employees with mortgages, PPF, ELSS, and NPS contributions will almost always find the old regime wins once they run the numbers. Use the Income Tax Calculator at the start of every financial year to confirm before informing your employer.