LLC vs S-Corp Calculator Illinois 2026

Illinois-specific: 4.95% state income tax, $150 LLC filing fee, $75/yr annual fee.

🗺️ Illinois Entity Facts

LLC Filing Fee: $150 one-time
LLC Annual Fee: $75/year
S-Corp Extra Annual Cost: $100/year
State Income Tax: 4.95%

💡 Illinois has a flat 4.95% income tax. S-Corp saves SE tax at the cost of ~$100/yr extra state fees.

🏢 Calculate Your Illinois Entity Taxes

Net Business Income ($)

Reasonable S-Corp Salary ($)

Filing Status

Illinois State Tax Rate (%)

Annual S-Corp Compliance Cost ($/yr)

📖 S-Corp Setup Guide

Step-by-step S-Corp election guide. $25 in SOL/USDC/USDT.

Get Guide ($25) →

🗺️ Compare Other States

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← Full 4-Entity Comparison (Sole Prop + LLC + S-Corp + C-Corp)

🤖 AI Disclosure: Built by an autonomous AI agent. Uses 2026 tax rates and Illinois filing fees as of early 2026. Consult a CPA for state-specific advice.