Every financial year, salaried Indians face the same question during proof submission and tax planning: old regime or new regime? The choice affects take-home pay, investment discipline, and how much documentation you maintain.
This guide explains both regimes for FY 2025-26 (Assessment Year 2026-27), when each tends to win, and how to compare numbers with the free Income Tax Calculator in Desi Tools.
Note: Tax slabs and rebate limits can change in the Union Budget. Always verify current rates in the calculator and on the official Income Tax Department portal before filing.
Two regimes, one return
Since FY 2020-21, individuals have had a default new tax regime with lower slab rates but fewer deductions. The old regime keeps higher slab rates but allows most Chapter VI-A deductions and exemptions (subject to eligibility).
You pick a regime for the year. The right choice is mathematical — not ideological.
New tax regime (FY 2025-26 overview)
The new regime is designed for simplicity:
- Lower slab rates on taxable income
- Fewer deductions — most Chapter VI-A claims are not available
- Standard deduction for salaried employees (as notified for the year)
- Default regime unless you opt for old
Illustrative slab structure (verify annually)
New regime slabs have been revised in recent budgets. Typical structure (check current law):
| Income slab (₹) | Indicative rate |
|---|---|
| Up to 3 lakh | Nil |
| 3 – 7 lakh | 5% |
| 7 – 10 lakh | 10% |
| 10 – 12 lakh | 15% |
| 12 – 15 lakh | 20% |
| Above 15 lakh | 30% |
Section 87A rebate may reduce tax to nil up to a specified income limit under the new regime — confirm the threshold for FY 2025-26.
4% Health and Education Cess applies on tax after rebate.
Who often prefers new regime
- Young professionals with low deductions (little 80C, no HRA exemption, no home loan interest)
- Taxpayers who value simplicity over optimising investments for tax only
- Those whose total deductions fall below the break-even point vs old regime
Old tax regime (FY 2025-26 overview)
The old regime allows eligible deductions and exemptions, including:
| Deduction / exemption | Section | Common use |
|---|---|---|
| EPF / PPF / ELSS / LIC | 80C | Up to ₹1.5 lakh combined |
| Health insurance | 80D | Self, family, parents |
| HRA exemption | 10(13A) | Rent paid in metro/non-metro |
| Home loan interest | 24(b) | Self-occupied property limits |
| NPS employer + self | 80CCD | Additional limits |
| Education loan interest | 80E | Interest component |
| Savings account interest | 80TTA / 80TTB | Interest limits |
Illustrative old regime slabs (verify annually)
| Income slab (₹) | Indicative rate |
|---|---|
| Up to 2.5 lakh | Nil |
| 2.5 – 5 lakh | 5% |
| 5 – 10 lakh | 20% |
| Above 10 lakh | 30% |
Higher slab rates, but deductions reduce taxable income before slabs apply.
Who often prefers old regime
- Renters claiming HRA exemption in expensive cities
- Home loan borrowers with meaningful interest + principal (80C) flows
- Families maximising 80C + 80D every year
- Those with significant deductions above roughly ₹3–4 lakh combined (break-even varies by income)
Use HRA Exemption and PF / EPF Calculator to estimate components before comparing regimes.
Side-by-side comparison
| Factor | Old regime | New regime |
|---|---|---|
| Slab rates | Higher | Lower |
| 80C, 80D, etc. | Generally allowed | Not available (exceptions minimal) |
| HRA exemption | Yes, if eligible | No |
| Home loan interest 24(b) | Yes, within limits | No |
| Standard deduction (salary) | Yes | Yes (verify amount) |
| Documentation | Higher — proofs for deductions | Lower |
| Default from FY 2023-24 | Opt-in required | Default for many |
Worked example: Salaried ₹12 lakh CTC
Assumptions (simplified):
- Gross salary ₹12,00,000
- Standard deduction ₹75,000 (illustrative — verify current)
- Old regime deductions: 80C ₹1,50,000, 80D ₹25,000, HRA exemption ₹1,20,000
- No other income
Old regime (conceptual):
- Taxable income ≈ 12,00,000 − 75,000 − 1,50,000 − 25,000 − 1,20,000 = ₹8,30,000
- Tax computed on old slabs + cess
New regime (conceptual):
- Taxable income ≈ 12,00,000 − 75,000 = ₹11,25,000
- Tax computed on new slabs + rebate if applicable + cess
Run your exact numbers in the Income Tax Calculator — small changes in HRA or 80C flip the winner.
Worked example: ₹8 lakh, minimal investments
- No HRA (owned house, no loan)
- 80C only ₹50,000 via EPF
New regime often wins here because lost deductions are small while new slabs stay favourable. Again — calculator beats guesswork.
How to decide in five steps
- List gross salary and other income (interest, rent, capital gains — separate rules may apply)
- Estimate old-regime deductions you actually use, not wishful 80C max
- Open Income Tax Calculator — enter both scenarios
- Compare tax liability and effective rate
- Inform HR via regime declaration by employer deadline
Repeat if salary or rent changes mid-year (regime choice is annual; payroll may allow revision per employer policy).
Related tax tools in Desi Tools
| Tool | Purpose |
|---|---|
| Income Tax Calculator | Old vs new comparison |
| HRA Exemption | Rent exemption estimate |
| PF / EPF Calculator | Employee provident fund |
| TDS Estimator | Withholding on payments |
| Gratuity Calculator | Retirement benefit estimate |
| NPS Calculator | Pension contribution planning |
Most run offline in the app after install. Free on Google Play and App Store.
Common mistakes
- Choosing old regime without using deductions — You pay old slab rates without benefits.
- Ignoring employer NPS (80CCD(2)) — Can tilt old regime for high earners.
- Mixing regimes incorrectly — Business income rules differ; salaried choice does not automatically apply to all heads of income.
- Last-day 80C rush — Tax-saving should fit financial goals, not only March purchases.
New regime is default — remember to opt in
If you want the old regime, submit the declaration to your employer within their timeline. Missing the window may leave you on new regime for TDS until corrected in return.
Filing vs planning
Desi Tools does not file ITR. It helps you plan. For filing:
- Use the Income Tax e-filing portal
- Or engage a CA / tax return preparer
Cross-check Form 16, AIS, and TIS before submitting.
Budget updates
Union Budget may change slabs, rebate limits, or standard deduction. After each Budget, update your comparison for FY 2025-26. The calculator is updated to reflect notified rates when published.
Try the calculator now
Enter salary, rent, 80C, and 80D in the Income Tax Calculator. Switch old vs new with one tap. Download Desi Tools for offline access alongside GST, EMI, and UPI tools.
Read next: GST guide — CGST, SGST, IGST for business tax separate from personal income tax.
Disclaimer: This article is educational, not tax advice. Consult a qualified professional for your specific situation.
Frequently asked questions
Which is better — old or new tax regime for FY 2025-26?
It depends on your deductions. High 80C, HRA, and home loan interest often favour the old regime. Minimal deductions usually favour the new regime's lower slabs and simpler rules.
Can I switch between old and new regime every year?
Salaried individuals can generally choose each financial year. Business income has different lock-in rules — confirm with a CA for your case.
Is standard deduction available in the new regime?
Yes. Salaried taxpayers get standard deduction under the new regime as well (amount per current Finance Act — verify for FY 2025-26 in the calculator).
Does Desi Tools file my ITR?
No. The Income Tax Calculator estimates liability for planning. File returns on the official Income Tax portal or through a tax professional.
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