- For a ₹15 lakh salary, the old tax regime may save you up to ₹1.5 lakh in taxes compared to the new regime, depending on your deductions.
- The new tax regime offers lower slabs but removes most deductions, making it ideal for those with minimal tax-saving investments.
- Common deductions like Section 80C (up to ₹1.5 lakh), Section 80D (health insurance), and home loan interest can drastically reduce tax liability under the old regime.
- Use our Income Tax Calculator to compare both regimes instantly and choose the best option for your financial situation.
- Always verify your calculations with the latest income tax slabs and consult a tax advisor before filing your returns.
Why This Guide Matters for Mid-Senior Professionals
Earning a ₹15 lakh salary puts you in India’s top tax bracket, where every rupee saved counts. The choice between the old tax regime and the new tax regime isn’t just about slabs—it’s about how you structure your finances. This guide breaks down the tax impact, compares both regimes with real numbers, and helps you decide which path saves you the most.
We’ll cover:
- How tax slabs work under both regimes
- Key deductions you can claim (or lose) in each regime
- Step-by-step calculations for a ₹15 lakh salary
- Which regime is better for your situation
- Common mistakes to avoid when filing taxes
If you’re unsure which regime to choose, run the numbers for both. The Income Tax Calculator on InvestingPro can do this in seconds—no spreadsheets needed.
Understanding the Two Tax Regimes in India (2026-27)
India offers two ways to calculate income tax: the old regime and the new regime. The key difference? The old regime lets you claim deductions, while the new regime offers lower tax rates but no deductions.
old tax regime: The Traditional Approach
The old regime follows a progressive tax structure with higher slabs but allows you to reduce taxable income through deductions. For FY 2026-27, the slabs are:
| Income Slab (₹) | Tax Rate |
|---|---|
| Up to 2.5 lakh | 0% |
| 2.5 lakh – 5 lakh | 5% |
| 5 lakh – 10 lakh | 20% |
| Above 10 lakh | 30% |
Under the old regime, you can claim deductions under sections like Section 80C (₹1.5 lakh), Section 80D (health insurance), home loan interest (₹2 lakh), and more.
New Tax Regime: Simpler, But No Deductions
The new regime, introduced in 2020, simplifies tax filing with lower rates but eliminates most deductions. For FY 2026-27, the slabs are:
| Income Slab (₹) | Tax Rate |
|---|---|
| Up to 3 lakh | 0% |
| 3 lakh – 6 lakh | 5% |
| 6 lakh – 9 lakh | 10% |
| 9 lakh – 12 lakh | 15% |
| 12 lakh – 15 lakh | 20% |
| Above 15 lakh | 30% |
The new regime also includes a standard deduction of ₹50,000 for salaried individuals, but you lose access to deductions like Section 80C or home loan interest.
If you opt for the new regime, you cannot claim deductions like Section 80C, Section 80D, or home loan interest. Choose carefully!
How Tax Slabs Work for a ₹15 Lakh Salary
Let’s break down how your ₹15 lakh salary is taxed under both regimes. We’ll assume no deductions for the new regime and compare it to a scenario where you claim maximum deductions under the old regime.
Old Regime Calculation (With Deductions)
Assume you claim the following deductions:
- Section 80C: ₹1.5 lakh (e.g., PPF, ELSS, EPF)
- Section 80D: ₹25,000 (health insurance for self)
- Home Loan Interest: ₹2 lakh (if applicable)
- Standard Deduction: ₹50,000 (for salaried individuals)
Your taxable income becomes:
₹15,00,000 (salary) – ₹1,50,000 (80C) – ₹25,000 (80D) – ₹2,00,000 (home loan) – ₹50,000 (standard deduction) = ₹10,75,000
Now, apply the old regime slabs:
| Slab (₹) | Tax Rate | Tax Amount (₹) |
|---|---|---|
| Up to 2.5 lakh | 0% | 0 |
| 2.5 lakh – 5 lakh | 5% | 12,500 |
| 5 lakh – 10 lakh | 20% | 1,00,000 |
| 10 lakh – 10.75 lakh | 30% | 22,500 |
Total tax under old regime: ₹1,35,000 + ₹12,500 (cess) = ₹1,47,500.
New Regime Calculation (No Deductions)
Under the new regime, your taxable income remains ₹15 lakh (no deductions). Apply the new slabs:
| Slab (₹) | Tax Rate | Tax Amount (₹) |
|---|---|---|
| Up to 3 lakh | 0% | 0 |
| 3 lakh – 6 lakh | 5% | 15,000 |
| 6 lakh – 9 lakh | 10% | 30,000 |
| 9 lakh – 12 lakh | 15% | 45,000 |
| 12 lakh – 15 lakh | 20% | 60,000 |
| Above 15 lakh | 30% | 0 (since income is exactly ₹15 lakh) |
Total tax under new regime: ₹1,50,000 + ₹11,250 (cess) = ₹1,61,250.
Old vs New Regime: Side-by-Side Comparison for ₹15 Lakh Salary
Here’s a clear comparison of both regimes for a ₹15 lakh salary, assuming you claim maximum deductions under the old regime:
| Parameter | Old Regime (With Deductions) | New Regime (No Deductions) |
|---|---|---|
| Taxable Income | ₹10,75,000 | ₹15,00,000 |
| Tax Before Cess | ₹1,35,000 | ₹1,50,000 |
| Health & Education Cess (4%) | ₹5,400 | ₹6,000 |
| Total Tax | ₹1,40,400 | ₹1,56,000 |
| Tax Saved vs New Regime | ₹15,600 | — |
In this scenario, the old regime saves you ₹15,600 in taxes. But what if you don’t claim all deductions?
Scenario: Partial Deductions Under Old Regime
Let’s say you only claim:
- Section 80C: ₹1 lakh
- Section 80D: ₹25,000
- Standard Deduction: ₹50,000
Your taxable income becomes:
₹15,00,000 – ₹1,00,000 – ₹25,000 – ₹50,000 = ₹13,25,000
Tax calculation:
| Slab (₹) | Tax Rate | Tax Amount (₹) |
|---|---|---|
| Up to 2.5 lakh | 0% | 0 |
| 2.5 lakh – 5 lakh | 5% | 12,500 |
| 5 lakh – 10 lakh | 20% | 1,00,000 |
| 10 lakh – 13.25 lakh | 30% | 97,500 |
Total tax: ₹2,10,000 + ₹8,400 (cess) = ₹2,18,400.
Now, compare this to the new regime’s ₹1,61,250. Here, the new regime saves you ₹57,150!
The old regime is better only if you can claim significant deductions (e.g., ₹2 lakh+). If your deductions are low, the new regime may be cheaper. Use the Income Tax Calculator to test both scenarios.
When Should You Choose the Old Regime? (And When to Avoid It)
The old regime is ideal for those who can claim substantial deductions. Here’s when it makes sense:
Choose Old Regime If:
- You invest in PPF, ELSS, or EPF (claiming ₹1.5 lakh under Section 80C).
- You pay home loan interest (up to ₹2 lakh under Section 24).
- You have health insurance premiums (up to ₹25,000 under Section 80D).
- You have other deductions like Section 80E (education loan interest) or Section 80G (donations).
Choose New Regime If:
- You don’t invest much in tax-saving instruments (e.g., no Section 80C investments).
- You have a home loan but the interest is low (e.g., ₹50,000/year).
- You prefer simplicity and lower compliance hassle.
- You’re in a higher tax bracket but can’t claim enough deductions to offset the old regime’s tax.
If you switch regimes mid-year (e.g., from old to new), you cannot claim deductions for the old regime portion. Stick to one regime for the entire financial year.
Real-World Examples: How Professionals Save (or Lose) Taxes
Let’s look at three professionals with a ₹15 lakh salary and see how their tax liability changes based on their financial habits.
Example 1: The Aggressive Investor (Old Regime Wins)
Profile: ₹15 lakh salary, invests ₹1.5 lakh in PPF, ₹50,000 in ELSS, pays ₹2 lakh home loan interest, and ₹25,000 in health insurance.
Taxable Income: ₹15,00,000 – ₹1,50,000 (80C) – ₹50,000 (ELSS) – ₹2,00,000 (home loan) – ₹25,000 (80D) – ₹50,000 (standard deduction) = ₹10,25,000
Tax: ₹1,27,500 + ₹5,100 (cess) = ₹1,32,600
New Regime Tax: ₹1,61,250
Savings:
₹28,650 under old regime.
Example 2: The Minimalist Investor (New Regime Wins)
Profile: ₹15 lakh salary, only claims ₹50,000 in Section 80C (e.g., PPF) and ₹25,000 in health insurance.
Taxable Income: ₹15,00,000 – ₹50,000 – ₹25,000 – ₹50,000 = ₹13,75,000
Tax: ₹2,02,500 + ₹8,100 (cess) = ₹2,10,600
New Regime Tax: ₹1,61,250
Savings:
₹49,350 under new regime.
Example 3: The Homeowner with High EMI (Depends on Loan Interest)
Profile: ₹15 lakh salary, pays ₹1.8 lakh in home loan interest and ₹50,000 in Section 80C investments.
Taxable Income: ₹15,00,000 – ₹50,000 (80C) – ₹1,80,000 (home loan) – ₹50,000 (standard deduction) = ₹12,20,000
Tax: ₹1,76,000 + ₹7,040 (cess) = ₹1,83,040
New Regime Tax: ₹1,61,250
Savings:
₹21,790 under new regime.
If you’re a homeowner, run the numbers for both regimes. A high home loan interest (e.g., ₹2 lakh+) can make the old regime cheaper, but only if you’re disciplined about investing.
How to Decide: A Step-by-Step Checklist
Use this checklist to decide which regime works best for you:
Step 1: List Your Deductions
Write down all deductions you’re eligible for under the old regime:
- Section 80C (₹1.5 lakh max)
- Section 80D (health insurance)
- Home loan interest (₹2 lakh max)
- Section 80E (education loan interest)
- Section 80G (donations)
- HRA (if you pay rent)
Step 2: Calculate Taxable Income Under Old Regime
Subtract all deductions from your gross salary to get your taxable income. For example:
₹15,00,000 (salary) – ₹1,50,000 (80C) – ₹25,000 (80D) – ₹2,00,000 (home loan) – ₹50,000 (HRA) = ₹10,75,000
Step 3: Calculate Tax Under Old Regime
Apply the old regime slabs to your taxable income. Don’t forget the 4% health and education cess.
Step 4: Compare with New Regime
The new regime’s tax is straightforward: ₹1,61,250 for a ₹15 lakh salary. If your old regime tax is lower, stick with it. If not, switch to the new regime.
Step 5: Factor in Other Costs
Consider the opportunity cost of not investing in tax-saving instruments. For example, if you skip PPF to save tax, you might miss out on compounding returns.
If you’re unsure, default to the old regime. You can always switch to the new regime later, but switching back is complicated.
Common Mistakes to Avoid When Choosing a Regime
Many professionals make these errors when picking a tax regime:
Mistake 1: Assuming the New Regime is Always Better
The new regime’s lower rates are tempting, but if you’re eligible for large deductions (e.g., ₹2 lakh+), the old regime may save you more. Always compare!
Mistake 2: Not Claiming All Deductions
Under the old regime, you might forget deductions like Section 80G (donations) or Section 80TTA (savings account interest). Check your Form 16 and receipts carefully.
Mistake 3: Ignoring the Standard Deduction
Both regimes offer a ₹50,000 standard deduction for salaried individuals. Even under the new regime, this reduces your taxable income by ₹50,000.
Mistake 4: Switching Regimes Mid-Year Without Planning
If you switch from old to new mid-year, you lose the ability to claim deductions for the old regime portion. Plan ahead!
Mistake 5: Overlooking Surcharge and Cess
Both regimes include a 4% health and education cess on tax. High earners (₹50 lakh+) may also face a 10% surcharge on income above ₹50 lakh.
Tools to Simplify Your Tax Calculation
Calculating taxes manually is error-prone. Use these tools to make the process easier:
1. Income Tax Calculator
Enter your salary, deductions, and investments to compare both regimes instantly. The calculator also factors in cess and surcharges.
2. PPF Calculator
See how investing in PPF reduces your taxable income under the old regime.
3. ELSS Calculator
ELSS funds offer Section 80C benefits and potential market-linked returns. Use this to estimate your tax savings.
4. Home Loan EMI Calculator
Calculate your home loan interest to see how much you can save under Section 24.
5. EMI Calculator
Plan your loan EMIs to ensure you have enough cash flow for tax-saving investments.
If you’re self-employed or have multiple income sources, use the Income Tax Calculator to account for all earnings and deductions.
What If You Have Other Income Sources?
A ₹15 lakh salary isn’t the only income for many professionals. Here’s how other income streams affect your tax liability:
Rental Income
If you earn rental income, it’s taxed under “Income from House Property”. You can claim a 30% standard deduction on the rent received and deduct municipal taxes paid.
Example: ₹3 lakh rent – ₹90,000 (30% deduction) – ₹20,000 (municipal taxes) = ₹1,90,000 taxable income.
Add this to your salary and calculate tax under both regimes.
Capital Gains
Profits from selling stocks, mutual funds, or property are taxed as capital gains:
- Equity (stocks, equity mutual funds): 10% tax on gains above ₹1 lakh (if held <1 year) or 15% (if held >1 year).
- Debt mutual funds: Taxed as per your slab if held <3 years; 20% with indexation if held >3 years.
- Property: 3% tax on gains if held >2 years (long-term); taxed as per slab if held <2 years.
Capital gains increase your taxable income, so choose the regime that minimizes your overall tax.
Freelance/Business Income
If you have freelance or business income, you must pay advance tax in four installments. The tax slabs remain the same, but you can claim business expenses as deductions under the old regime.
If your total income (salary + other sources) exceeds ₹50 lakh, you may face a 10% surcharge on income above ₹50 lakh. Plan your investments accordingly.
How to Switch Regimes (And What to Watch Out For)
You can switch between regimes every financial year, but there are rules:
For Salaried Individuals
- Your employer deducts TDS based on the regime you choose when submitting Form 12BB.
- If you don’t submit Form 12BB, your employer will deduct TDS under the old regime by default.
- You can change your choice when filing your ITR (Income Tax Return).
For Self-Employed/Business Owners
- You can choose the regime when filing your ITR.
- If you switch from old to new, you cannot claim deductions for the old regime portion.
- Keep records of all investments and expenses to justify your deductions.
Key Deadlines
- Submit Form 12BB to your employer by March 31 of the financial year.
- File your ITR by July 31 (for salaried individuals) or October 31 (for businesses).
If you’re unsure, choose the old regime initially. You can always switch to the new regime later, but switching back requires filing revised returns.
Frequently Asked Questions
Frequently Asked Questions
Can I switch between the old and new tax regimes every year?
Yes, you can switch regimes every financial year. However, if you switch from old to new, you cannot claim deductions for the old regime portion of that year. Consult a tax advisor to optimize your choice.
What happens if I don’t submit Form 12BB to my employer?
If you don’t submit Form 12BB, your employer will deduct TDS under the old regime by default. You can still choose the new regime when filing your ITR, but you’ll need to claim a refund if TDS was deducted under the old regime.
Are there any deductions available under the new tax regime?
Yes, the new regime allows a few deductions, including the standard deduction of ₹50,000 for salaried individuals, Section 80D (health insurance), and Section 80G (donations). However, most popular deductions like Section 80C are not available.
How does the new tax regime affect my HRA exemption?
Under the new regime, you cannot claim HRA exemption. If you pay rent, the old regime is usually better as it allows HRA deductions. Use the Income Tax Calculator to compare both scenarios.
What is the impact of the new tax regime on senior citizens?
Senior citizens (60-80 years) have higher basic exemption limits (₹3 lakh) under both regimes. However, the new regime’s lower slabs may still be beneficial if they don’t claim many deductions. Always compare both regimes before deciding.
This article is for informational purposes only and does not constitute financial advice. Rates and offers are subject to change. Please consult a SEBI-registered advisor before making investment decisions. InvestingPro.in may earn a commission when you apply through our links.