The one financial decision most salaried Indians get wrong every single year.
Every year, crores of Indian taxpayers file their returns and every year, a significant portion of them quietly leave money on the table. Not because they chose the wrong investments. Not because they missed a deadline (though that happens too). But because they made one seemingly simple decision without running the numbers: choosing between the old vs new tax regime.
With the rollout of the Income Tax Act, 2025, this choice has never carried more financial weight. The new regime offers lower headline tax rates, while the old regime rewards those who invest strategically and claim deductions. Neither is universally “better.” Your best option depends entirely on your numbers your income, your investments, your HRA, your home loan. This guide gives you everything you need to make that call with confidence.
What is the Old vs New Tax Regime?
India currently operates two parallel personal income tax systems, and every taxpayer must elect one at the time of filing or, in the case of salaried employees, communicate their preference to their employer at the start of the financial year.
According to the Income Tax Department of India, the old tax regime allows taxpayers to claim a wide range of deductions and exemptions HRA, standard deduction, LTA, Section 80C (up to ₹1.5 lakh), 80D for health insurance, home loan interest under Section 24(b), and much more. These deductions directly reduce your taxable income, which means the effective tax you pay can be significantly lower than the published slab rates suggest.
The new tax regime, significantly restructured in Budget 2023 and further refined under the Income Tax Act, 2025, offers lower slab rates but eliminates most deductions. The government has made it the default option meaning if you do nothing, you are automatically placed in the new regime. The new regime is designed to simplify compliance and is especially attractive for those who do not have significant deductions.
| Income Slab | Old Regime Rate | New Regime Rate (2025) |
| Up to ₹3,00,000 | Nil | Nil |
| ₹3,00,001 – ₹7,00,000 | 5% | 5% |
| ₹7,00,001 – ₹10,00,000 | 20% | 10% |
| ₹10,00,001 – ₹12,00,000 | 30% | 15% |
| ₹12,00,001 – ₹15,00,000 | 30% | 20% |
| Above ₹15,00,000 | 30% | 30% |
On the surface, the new regime looks attractive. But tax slabs alone don’t tell the full story. Your effective tax rate what you actually pay after deductions can be dramatically different.
Key Deductions: What You Give Up in the New Tax Regime
Understanding the old vs new tax regime comparison is impossible without understanding what deductions the new regime removes. Here is what salaried taxpayers commonly lose access to when they opt for the new regime:
- HRA (House Rent Allowance): One of the most powerful deductions for metro and urban workers. Not available in the new regime.
- Section 80C (₹1.5 lakh limit): Covers PPF, ELSS, LIC premiums, EPF, home loan principal repayment, and more. Not available in the new regime.
- Section 80D: Deduction for health insurance premiums for self and family. Not available in the new regime.
- Home loan interest (Section 24b): Up to ₹2 lakh deduction on interest for self-occupied property. Not available in the new regime.
- LTA (Leave Travel Allowance): Not available in the new regime.
What is available in the new regime?
The standard deduction of ₹75,000 for salaried individuals (revised in 2024) and the employer’s NPS contribution (up to 14% of basic salary under Section 80CCD (2) remain eligible in the new regime. These are important benefits often overlooked by taxpayers.
Old vs New Tax Regime: A Real-World Numerical Example
Practical Example
Case: Ravi, Salaried Employee Gross Income ₹15,00,000
Ravi earns ₹15 lakh per year. He pays rent in Mumbai, has an active PPF and ELSS investment, and pays health insurance premiums for his family. Here is how the two regimes compare for him:
| Item | Old Regime | New Regime |
| Gross Income | ₹15,00,000 | ₹15,00,000 |
| Standard Deduction | −₹50,000 | −₹75,000 |
| HRA Exemption | −₹1,80,000 | Not Applicable |
| Section 80C | −₹1,50,000 | Not Applicable |
| Section 80D | −₹25,000 | Not Applicable |
| Home Loan Interest (24b) | −₹1,00,000 | Not Applicable |
| Net Taxable Income | ₹9,95,000 | ₹14,25,000 |
| Approximate Tax (incl. cess) | ~₹1,34,000 | ~₹1,85,000 |
In this scenario, Ravi saves approximately ₹51,000 more by choosing the old regime. Tax savings are illustrative and will vary with actual figures.
This is the math most taxpayers never do. As Dr. Haresh Adwani, founder of Adwani and Company, consistently points out during consultations: “The regime that looks cheaper at the slab level often turns out to be more expensive at the effective tax level once you factor in the deductions a disciplined investor claims.
Also Read:
https://www.adwaniandco.com/blog/section-80ggc-deduction-disallowance
Which Regime is Better at Different Income Levels?
The old vs new tax regime debate does not have a universal answer. But there are useful income-based patterns that emerge from detailed tax calculations:
Income up to ₹12.75 lakh: The new regime, combined with the standard deduction of ₹75,000 and a tax rebate under Section 87A (up to ₹60,000 in the new regime for FY 2025-26), can result in zero tax liability. This makes the new regime extremely compelling for this income band especially if the taxpayer does not have significant deductions.
Income around ₹15 lakh: This is the battleground. If you have HRA, 80C investments, and a home loan the old regime almost certainly wins. If you have minimal deductions, the new regime may be marginally better or comparable.
Income above ₹20 lakh: The lower slab rates in the new regime start to overpower the benefit of deductions for many taxpayers, especially those without a home loan. The new regime often gains the advantage here but this must be calculated individually.
Critical Mistakes to Avoid When Choosing Your Tax Regime
Mistake 1: Not informing your employer on time
If you are a salaried employee and you wish to opt for the old regime, you must inform your employer before the start of the financial year (typically before April 1). Failing to do so means your employer will deduct TDS under the new regime by default. This can result in lower in-hand salary throughout the year and an unexpected tax liability or a refund headache at the time of filing. As the Income Tax Department guidance clearly outlines, the responsibility of intimating regime choice lies with the employee.
Mistake 2: Comparing regimes based on slabs alone
A large number of taxpayers make regime decisions based on rate comparisons without plugging in their actual deductions. Running both scenarios through an income tax calculator or better, consulting a CA takes minutes and can save tens of thousands of rupees annually. Dr. Haresh Adwani, with his expertise spanning commerce, law, and taxation, emphasizes that personalised tax planning not generalized assumptions is what protects your income.
Mistake 3: Business income taxpayers assuming unlimited regime switches
Unlike salaried individuals who can switch regimes every year, taxpayers with business or professional income (who file under ITR-3 or ITR-4) can switch from the new regime to the old regime only once. After that, if they switch back to the new regime, they cannot return to the old regime again. This rule, as outlined in Section 115BAC of the Income Tax Act, is frequently misunderstood and can result in irreversible decisions.
Mistake 4: Ignoring NPS employer contribution in the new regime
Section 80CCD (2) allows a deduction for the employer’s contribution to the National Pension System up to 14% of basic salary in the new regime (10% in the old regime for private sector employees). Many employees miss negotiating this benefit with their employer. It is one of the most valuable, legitimate tax tools available in the new regime, and Adwani and Company frequently helps clients restructure their CTC to maximise this benefit.
Old vs New Tax Regime for Business Owners and Freelancers
Self-employed individuals, freelancers, and business owners face a different landscape than salaried employees. The ability to claim business expenses, depreciation, and set off losses makes the old regime more nuanced for this group. However, the presumptive taxation scheme under Section 44AD (for businesses up to ₹3 crore turnover) and 44ADA (for professionals) is compatible with the new regime offering simplicity without the burden of maintaining detailed books purely for deduction purposes.
The GST Portal and MCA (Ministry of Corporate Affairs) registrations don’t directly impact your income tax regime choice but your business structure (proprietorship vs LLP vs private limited) significantly affects how income is taxed. For incorporated entities, regime choice applies to individual promoters on their personal income, not to the company’s corporate terms
How to Calculate and Decide: A Practical Framework
A simple five-step process for every taxpayer before the financial year begins:
- List your expected gross income for the year salary, rent, capital gains, business income.
- List all deductions you will legitimately claim HRA, 80C, 80D, home loan interest, NPS.
- Calculate your net taxable income under both regimes use the Income Tax Department’s online calculator or a CA-prepared spreadsheet.
- Apply the applicable slab rates to each and compute the final tax including surcharge and 4% cess.
- Choose the lower outcome and communicate it to your employer or record it in your ITR before the deadline.
This process takes less than 30 minutes with a professional’s guidance, yet it directly determines how much of your hard-earned income stays in your pocket.
Authority Reference:
The Income Tax Department’s official tax calculator at the incometax.gov.in portal allows taxpayers to compare their liability under both regimes using actual income and deduction inputs. It is updated for each assessment year and is the most reliable starting point for the comparison.
Conclusion: Stop Following Others, Start Calculating
The old vs new tax regime debate is not a matter of opinion it is a matter of arithmetic. And yet, year after year, taxpayers choose their regime the same way they pick a restaurant: by seeing what their colleagues are having.
Your tax planning is personal. Your income is unique. Your deductions are different from your neighbour’s. The regime that saves your colleague ₹40,000 might cost you ₹60,000 and vice versa. The Income Tax Act, 2025 has given taxpayers more structure and clarity, but the decision still requires you to sit down with actual numbers and make a deliberate, informed choice.
As Dr. Haresh Adwani has guided hundreds of clients over the years: “Tax saving is not about which regime old vs new looks better in a presentation. It is about which regime performs better with your specific income, your specific investments, and your specific life situation.”
Don’t leave money on the table. Don’t wait until March. Start now, calculate both old vs new regimes, and make the right decision for your financial future.
1. Which is better old vs new tax regime in 2025?
There is no universally better regime. The old regime benefits those with significant deductions like HRA, 80C, and home loans. The new regime works better for those with minimal investments or income up to ₹12.75 lakh. Always calculate both before choosing.
2. Can I switch between old vs new tax regime every year?
Salaried individuals can switch regimes every financial year. However, taxpayers with business or professional income can switch from new to old only once; after reverting to new, they cannot switch back to old.
3. Is HRA exempt in the new tax regime?
No. House Rent Allowance (HRA) exemption is not available under the new tax regime. This is one of the most significant reasons why the old regime may be better for salaried employees living on rent in cities.
4. What deductions are available in the new tax regime?
The new regime allows the standard deduction of ₹75,000 (for salaried employees), employer’s NPS contribution under Section 80CCD(2), and a few other limited exemptions. Most major deductions (80C, 80D, HRA, 24b) are not available.
5. Is income up to ₹12 lakh tax-free in the new regime?
Under the new tax regime for FY 2025–26, taxpayers with income up to ₹12 lakh (and ₹12.75 lakh for salaried individuals after the ₹75,000 standard deduction) may have zero tax liability due to the revised Section 87A rebate. Consult a CA to confirm your specific eligibility.
6. What happens if I don’t inform my employer about my regime choice?
If you don’t inform your employer, TDS will be deducted under the new regime (the default). This could result in excess TDS (requiring refund) or insufficient TDS (resulting in a year-end demand) depending on which regime would have been optimal for you.
7. Should I consult a CA for regime selection?
Yes especially if your income exceeds ₹10 lakh, if you have business income, if you have a home loan or rental income, or if you are self-employed. A qualified CA like those at Adwani and Company can run a precise comparison and help you structure your income tax planning for maximum savings.
About the Author
CA Dipesh Gurubakshani is a Chartered Accountant with Adwani & Co LLP, Pune, specialising in income tax audit, direct taxation, and accounting advisory. He supports clients across statutory compliance, financial reporting, and income tax matters with a focus on accuracy, regulatory adherence, and disciplined execution.
