What Is Surcharge on Income Tax in India? (FY 2025-26)

Income tax in India is not just the slab rate applied to your taxable income. Once your income crosses certain thresholds, an additional levy called a surcharge applies on the tax payable. Add 4% health and education cess on top, and the effective tax rate can be substantially higher than the headline slab rate. This guide explains exactly how surcharge works in FY 2025-26.

Surcharge Rates for Individuals (FY 2025-26)

Important: The 37% surcharge on incomes above ₹5 crore is available only under the old tax regime. Under the new regime, the maximum surcharge on all incomes above ₹2 crore is capped at 25%.

How Surcharge Is Calculated

Tax Payable = (Taxable Income × Applicable Slab Rate)
Surcharge   = Tax Payable × Surcharge Rate
Cess        = (Tax Payable + Surcharge) × 4%
Total Tax   = Tax Payable + Surcharge + Cess

Example — Income ₹60 lakh (New Regime, FY 2025-26):

• Tax on ₹60 lakh at new regime slabs ≈ ₹11,25,000 (indicative)
• Surcharge at 10% = ₹1,12,500
• Subtotal = ₹12,37,500
• Cess at 4% = ₹49,500
• Total tax = ₹12,87,000
• Effective rate ≈ 21.45%

Use the income tax calculator for precise computation under both regimes.

What Is Marginal Relief?

Surcharge creates a cliff effect: an income of ₹50,00,001 technically triggers a surcharge that can result in more total tax than an income of ₹50,00,000. Marginal relief prevents this anomaly — it ensures that the additional tax (including surcharge) arising because income crossed the threshold cannot exceed the additional income itself.

Example of Marginal Relief:

Without marginal relief, you pay ₹1,26,880 more in tax for earning ₹1,00,000 more — you are net worse off. Marginal relief caps the additional tax at ₹1,00,000 in such cases.

Marginal relief applies at each surcharge threshold: ₹50 lakh, ₹1 crore, ₹2 crore, and ₹5 crore.

Surcharge on Capital Gains (Special Tax Rate Items)

Surcharge on special rate incomes like Short Term Capital Gains (STCG) under Section 111A (equity) and Long Term Capital Gains (LTCG) under Section 112A is capped at 15%, regardless of total income. This means high earners with large equity gains are partially shielded from the higher surcharge tiers on those gains.

Surcharge on Dividend Income and Interest

Dividend and interest income forms part of total income and is subject to the surcharge applicable to your income slab. If your total income (including dividends) crosses ₹1 crore, the 15% surcharge applies on the tax on the entire income (with the capital gains surcharge cap noted above).

Practical Impact on High-Earning Professionals

A doctor, CA, or senior executive in Mumbai with ₹80 lakh annual income pays:

• Income tax under new regime: ~₹16.9 lakh
• Surcharge (10%): ~₹1.69 lakh
• Cess (4%): ~₹74,000
• Total: ~₹19.33 lakh — effective rate ~24.2%

This reinforces why optimising deductions under the old regime or carefully choosing between regimes is worth the effort at these income levels.

These figures are estimates for educational purposes. Consult a SEBI-registered advisor for personalised advice.