Income Tax Calculator

Income Tax Calculator — See Exactly How Much Tax You Owe Under Both Regimes

Every financial year, Indian taxpayers face the same decision: stick with the old tax regime and claim every deduction available, or switch to the new regime with lower rates but no deductions. For most salaried professionals, the answer depends on variables that change every year — your salary structure, your investment pattern, whether you pay rent, and whether you have a home loan. This Income Tax Calculator lets you plug in all of these details — gross salary, interest income, rental income, home loan interest, 80C deductions, NPS contributions, health insurance premiums, HRA details — and instantly computes your tax liability under both regimes side by side. No guesswork, no approximation, no relying on a colleague's spreadsheet. Just your exact numbers.

Whether you're planning investments for the current financial year, computing advance tax instalments, or simply trying to understand what proportion of your income goes to the government — this calculator gives you the clarity to make informed decisions before March 31st, not after.

How Indian Income Tax Actually Works — The Six-Step Process

Income tax for individuals follows a structured computation process. Understanding each step helps you identify exactly where your tax liability comes from:

• Step 1 — Gross Total Income: Sum all income sources: salary (gross, before deductions), house property income (or loss), business/profession income, capital gains, and income from other sources (interest, dividends, etc.). Under the new regime, a standard deduction of ₹75,000 (for salaried/pensioners) is applied automatically.
• Step 2 — Deductions (old regime only): Subtract eligible deductions from gross total income. This is where the regimes diverge significantly — the new regime eliminates nearly all deductions, while the old regime allows you to reduce taxable income through 80C, 80D, HRA, home loan interest, and more.
• Step 3 — Taxable Income: The amount on which tax rates are actually applied. In the new regime, this is roughly gross income minus ₹75,000 standard deduction. In the old regime, it can be substantially lower after all deductions.
• Step 4 — Apply slab rates: Tax is calculated progressively — you pay 0% on the first tranche, 5% on the next, 10% on the next, and so on. You don't pay 30% on your entire income just because part of it falls in the 30% bracket.
• Step 5 — Add cess: Health and Education Cess at 4% is applied on the computed tax amount (not on income). This is a non-negotiable addition.
• Step 6 — Surcharge (if applicable): For annual income exceeding ₹50 lakh, additional surcharge of 10% (₹50L-1Cr), 15% (₹1Cr-2Cr), 25% (₹2Cr-5Cr, old regime), or 37% (above ₹5Cr, old regime) applies. The new regime caps surcharge at 15% for most income types except short-term capital gains.

New Regime Tax Slabs for FY 2025-26 — The Default Option

From FY 2023-24, the new regime is the default. If you don't explicitly choose the old regime, you're automatically placed under the new one. The slab structure (FY 2025-26):

• ₹0 – ₹4,00,000: Nil
• ₹4,00,001 – ₹8,00,000: 5%
• ₹8,00,001 – ₹12,00,000: 10%
• ₹12,00,001 – ₹16,00,000: 15%
• ₹16,00,001 – ₹20,00,000: 20%
• ₹20,00,001 – ₹24,00,000: 25%
• Above ₹24,00,000: 30%

Section 87A rebate: If your total income doesn't exceed ₹12 lakh, the entire tax liability (before cess) is rebated — making ₹12 lakh effectively tax-free. Combined with the ₹75,000 standard deduction, a gross salary of ₹12.75 lakh results in zero tax under the new regime. This is the single biggest advantage of the new regime for middle-income earners.

Old Regime Tax Slabs — When Deductions Make It Worthwhile

The old regime retains the pre-2020 slab structure with wider deductions:

• ₹0 – ₹2,50,000: Nil
• ₹2,50,001 – ₹5,00,000: 5%
• ₹5,00,001 – ₹10,00,000: 20%
• Above ₹10,00,000: 30%

Senior citizens (60+): ₹3 lakh basic exemption. Super senior citizens (80+): ₹5 lakh. The 87A rebate applies only if total income is up to ₹5 lakh (rebate of ₹12,500).

The old regime becomes better when your total deductions exceed roughly ₹3.75 lakh for someone earning ₹15 lakh. At ₹15 lakh income with ₹5 lakh in deductions (80C ₹1.5L + 80CCD(1B) ₹50K + 80D ₹50K + HRA ₹1.5L + standard deduction ₹50K), old regime tax ≈ ₹70,000 vs new regime tax ≈ ₹90,000 — a ₹20,000 saving that makes the old regime clearly better. Run both scenarios in this calculator with your actual numbers.

Deductions That Make the Old Regime Powerful

The old regime's advantage lies entirely in its deductions. Here's a realistic deduction stack for a salaried professional paying rent in a metro city:

• Section 80C (₹1,50,000): EPF contribution (12% of basic), PPF investment (up to ₹1.5L/year), ELSS mutual fund, children's tuition fees, home loan principal repayment, and life insurance premium. Most salaried individuals can hit the ₹1.5L limit through EPF + PPF alone.
• Section 80CCD(1B) NPS (₹50,000): Additional NPS contribution over and above 80C. This ₹50,000 deduction saves ₹15,600 (with cess) for someone in the 20% slab. Available to anyone — you don't need employer NPS contribution to claim this.
• Section 80D Health Insurance (₹25,000-₹1,00,000): ₹25,000 for self/family insurance + ₹25,000 for parents' insurance. If parents are senior citizens: ₹50,000 for parents. Total potential deduction: ₹75,000. This is one of the most underutilised deductions — many professionals don't claim parents' health insurance premium.
• HRA Exemption (₹1,00,000-₹3,00,000): Calculated as the minimum of: actual HRA received, rent paid minus 10% of basic+DA, or 50% of basic+DA (metro) / 40% (non-metro). For someone paying ₹25,000/month rent in Mumbai with ₹50,000 basic, annual HRA exemption ≈ ₹1,80,000.
• Home loan interest Section 24(b) (up to ₹2,00,000): For self-occupied property. Full interest deductible for let-out property (with conditions). The principal repayment goes under 80C.
• Standard deduction: ₹50,000 for salaried individuals.

Total potential deductions: ₹5,50,000-₹7,50,000+. For someone earning ₹18 lakh, this can bring taxable income down to ₹10-12 lakh — where the old regime's effective tax is substantially lower than the new regime.

HRA Exemption — The Calculation That Saves Lakhs

HRA exemption is often the largest single deduction available to renting professionals, yet many don't claim it correctly. The exemption is the minimum of three values:

• Actual HRA received from employer annually
• Rent paid minus 10% of (Basic + DA) annually
• 50% of (Basic + DA) for metro cities (Delhi, Mumbai, Kolkata, Chennai); 40% for non-metro

Worked example: Basic ₹60,000/month, HRA ₹30,000/month, rent ₹22,000/month, living in Bengaluru (metro). (1) ₹30,000 (2) ₹22,000 − ₹6,000 = ₹16,000 (3) ₹30,000. Minimum = ₹16,000/month. Annual exemption = ₹1,92,000. For someone in the 30% bracket, this saves ₹57,600 in tax — every single year. Ensure you submit rent receipts to your employer and file Form 12BB to claim this through your employer's TDS computation.

Advance Tax — When You Need to Pay Before March 31st

If your total tax liability for the year exceeds ₹10,000 after accounting for TDS, you're required to pay advance tax in instalments throughout the year. This applies primarily to freelancers, business owners, and salaried individuals with significant capital gains or interest income:

• 15% of estimated tax by 15th June
• 45% of estimated tax by 15th September
• 75% of estimated tax by 15th December
• 100% of estimated tax by 15th March

Non-payment or under-payment attracts interest under Sections 234B (1% per month on unpaid tax) and 234C (1% per month on each instalment shortfall). For most salaried employees with only salary income, employer TDS covers the full liability — advance tax is only relevant if you have additional income sources.

Frequently Asked Questions About Income Tax