Income Tax Calculation Guide for Salaried Employees — FY 2025-26

· 3 min read

Filing income tax as a salaried employee can be confusing with multiple components, deductions, and two different tax regimes. This complete guide walks you through the entire tax calculation process step by step.

Step 1: Calculate Your Gross Total Income

Start with your total income from all sources:

  • Salary Income: Basic + DA + HRA + Special Allowance + Bonuses
  • House Property Income: Rental income minus 30% standard deduction and home loan interest
  • Capital Gains: Profits from selling shares, property, or other assets
  • Other Sources: FD interest, savings account interest, dividends

Step 2: Apply Standard Deduction

Both old and new tax regimes allow a standard deduction of ₹75,000 from salary income (increased from ₹50,000 in Budget 2024). This is automatically deducted — no proof required.

Step 3: Choose Your Tax Regime

New Tax Regime (Default)

Lower tax rates, fewer deductions allowed. Best for those with minimal deductions.

  • Up to ₹4 lakh: 0%
  • ₹4-8 lakh: 5%
  • ₹8-12 lakh: 10%
  • ₹12-16 lakh: 15%
  • ₹16-20 lakh: 20%
  • ₹20-24 lakh: 25%
  • Above ₹24 lakh: 30%

Bonus: Zero tax if taxable income is up to ₹12,00,000 (Section 87A rebate).

Old Tax Regime

Higher tax rates but allows all deductions (80C, 80D, HRA, etc.).

Step 4: Tax-Saving Deductions (Old Regime)

  • Section 80C (₹1.5 lakh): EPF, PPF, ELSS, life insurance, children’s tuition
  • Section 80D (₹25,000-₹75,000): Health insurance premium
  • Section 80CCD(1B) (₹50,000): Additional NPS contribution
  • HRA Exemption: If paying rent (calculated based on actual rent, basic salary, and city)
  • Home Loan Interest (₹2 lakh): Section 24(b) for self-occupied property

Real Example: ₹12 Lakh CTC

For a salaried employee with ₹12,00,000 CTC:

  • Gross Salary: ₹10,80,000 (after employer EPF + gratuity)
  • Standard Deduction: -₹75,000
  • Taxable Income: ₹10,05,000

New Regime Tax: ₹40,500 + 4% cess = ₹42,120

Old Regime Tax (with ₹2 lakh deductions): ₹50,440 + 4% cess = ₹52,458

In this case, the new regime saves ₹10,338!

Calculate your exact tax with our Income Tax Calculator.

Understanding the New Tax Regime vs Old Tax Regime

From FY 2025-26, the new tax regime is the default option for all taxpayers. Under the new regime, tax rates are lower but most deductions and exemptions (Section 80C, 80D, HRA, LTA, etc.) are not available. Under the old regime, tax rates are higher but you can claim deductions that significantly reduce your taxable income. The right choice depends on your specific deduction profile.

As a general rule, if your total deductions under the old regime exceed Rs 3.75 lakhs, the old regime is likely better for you. If your deductions are less than Rs 2.5 lakhs, the new regime almost certainly saves you more tax. Between Rs 2.5 and 3.75 lakhs, it depends on your exact income level and deduction mix. Use our Income Tax Calculator on calcota.com to compare both regimes side by side with your actual numbers.

Common Mistakes in Tax Calculation

The most frequent error salaried employees make is confusing gross salary with taxable income. Your taxable income is your gross salary minus standard deduction (Rs 75,000 under new regime), minus HRA exemption (old regime only), minus professional tax, and minus all eligible deductions. Many employees also forget to account for income from other sources — bank interest, rental income, capital gains from investments — which must be added to salary income for total tax calculation.

Another common mistake is not planning tax-saving investments throughout the year. Many employees rush to invest in ELSS funds or buy insurance policies in January and February to meet the March 31 deadline, often making suboptimal choices due to time pressure. Planning your Section 80C investments at the beginning of the financial year gives you 12 months to make thoughtful decisions and also ensures your tax-saving investments benefit from a full year of market participation.