Illinois Capital Gains Tax Calculator
Estimate your state and combined capital gains tax liability in Illinois
Illinois Calculator
Get accurate results
Updated for 2025 with real Illinois rates, brackets, and regulations
Illinois taxes capital gains as ordinary income at its flat 4.95% rate — there is no preferential long-term capital gains rate at the state level. This applies to stocks, bonds, real estate gains, and cryptocurrency. However, Illinois's rate is far more moderate than states like California (13.3%) or New York (10.9%), making Illinois relatively competitive for investors and business owners compared to coastal high-tax states. Combined with federal long-term rates (0%, 15%, or 20% depending on income), a high-income Illinois investor pays a significantly lower total capital gains tax than their California counterpart. One important note: the federal $250,000/$500,000 home sale exclusion applies for Illinois purposes as well.
Calculate Your IL Tax
Illinois Tax on Capital Gain
$2,475
IL Rate
4.95%
Federal Tax
$7,500
Federal Rate
15.0%
Total Tax on Gain
$9,975
Net After-Tax Gain
$40,025
Total Effective Rate
19.95%
Breakdown
Insight
Illinois taxes long-term capital gains at the flat 4.95% rate — same as ordinary income, no preferential treatment. On a $50,000 gain, Illinois charges $2,475. Combined with $7,500 federal tax (15%), you keep $40,025 (80.0% of gain). Illinois is mid-tier for capital gains: better than California (9.3%), comparable to New York (6.85%), worse than Texas (0%). Consider timing gains with income-light years to reduce federal exposure.
AI Explanation
What This Means
Based on default inputs, the Illinois Capital Gains Tax Calculator shows a illinois tax on capital gain of $2,475. Key figures: IL Rate: 4.95%, Federal Tax: $7,500, Federal Rate: 15.0%, Total Tax on Gain: $9,975, Net After-Tax Gain: $40,025, Total Effective Rate: 19.95%.
Key Insights
Illinois taxes long-term capital gains at the flat 4.95% rate — same as ordinary income, no preferential treatment. On a $50,000 gain, Illinois charges $2,475. Combined with $7,500 federal tax (15%), you keep $40,025 (80.0% of gain). Illinois is mid-tier for capital gains: better than California (9.3%), comparable to New York (6.85%), worse than Texas (0%). Consider timing gains with income-light years to reduce federal exposure.
What You Can Do
Enter your actual figures in the calculator above for a personalized breakdown. Consider consulting a tax professional for comprehensive planning, especially for complex situations involving multiple income sources or deductions.
Keep In Mind
This calculator provides estimates based on 2026 rates. Actual tax liability may vary based on credits, exemptions, and other factors not captured here. This is for educational purposes only and should not be considered tax advice.
How the Illinois Capital Gains Tax Calculator Works
The Illinois Capital Gains Tax Calculator uses 2026 tax rates, brackets, and deductions specific to Illinois to provide you with an accurate estimate of your tax obligations. Unlike generic federal-only calculators, this tool accounts for the unique tax structure that Illinois residents face.
Formula
IL Capital Gains Tax = Gain × 4.95% (same as ordinary income). No distinction between short-term and long-term at state level.Simply enter your financial details above, and the calculator instantly computes your results using the latest available data. All calculations happen directly in your browser — your personal information is never sent to any server or stored anywhere.
Why Use a Illinois-Specific Calculator?
State-Specific Rates
Uses real 2026 Illinois tax brackets, rates, and thresholds — not generic national averages that miss state-level nuances.
Local Programs & Exemptions
Factors in Illinois-specific programs, exemptions, and deductions that national calculators simply don't account for.
Instant & Private
All calculations run locally in your browser. No account required, no data stored, no waiting for results.
AI-Powered Explanations
Get a plain-English breakdown of your results with actionable insights you can actually use for financial planning.
What's Included
Flat State Rate
Simple 4.95% Illinois rate on all gains — no bracket calculations needed
Combined Federal + IL
Shows total tax burden combining federal capital gains rates with Illinois state tax
State Comparison
Compare Illinois's 4.95% rate vs California (13.3%), New York (10.9%), and no-tax states
Frequently Asked Questions
Does Illinois have a lower rate for long-term capital gains?
No. Illinois applies the same flat 4.95% rate to all capital gains regardless of holding period. There is no long-term capital gains preference at the state level. The federal distinction (0/15/20%) still applies to your federal return.
How much total tax will I pay on capital gains in Illinois?
A single filer with $100,000 income selling stock with a $50,000 long-term gain pays: 15% federal ($7,500) + 4.95% IL ($2,475) = $9,975 total, an effective combined rate of about 19.95%. By comparison, the same scenario in California would cost roughly $25,000.
Is Illinois good for investors compared to other states?
Illinois is moderately tax-friendly for investors. At 4.95%, it's far better than California (13.3%), New York (10.9%), or New Jersey (10.75%). However, Illinois's high property taxes and overall cost burden are factors for high-net-worth individuals considering relocation.
Does selling my home trigger capital gains tax in Illinois?
The federal $250,000 (single) / $500,000 (married) home sale exclusion applies for Illinois purposes. If your gain exceeds the exclusion, the excess is taxed at 4.95% state rate. Many Illinois homeowners will owe no state tax on home sales given the $250,000 median home value.
Are cryptocurrency gains taxed in Illinois?
Yes. Illinois follows federal treatment of cryptocurrency as property, meaning gains are taxable at 4.95% state rate. Short-term and long-term distinctions apply only at the federal level — Illinois applies 4.95% to all crypto gains regardless of holding period.
Important Information for Illinois Residents
Tax laws in Illinois can change annually. This calculator is updated regularly to reflect the latest 2026 rates and regulations, but you should always verify important financial decisions with a qualified Illinois tax professional or CPA.
This tool is designed for informational and educational purposes. While we strive for accuracy using official Illinois Department of Taxation data, the results should be used as estimates for planning purposes only. Your actual tax liability may differ based on credits, special circumstances, and legislative changes that occur after our last update.
For filing deadlines, payment schedules, and official forms, visit the Illinois Department of Taxation and Finance website. If you have complex tax situations involving multiple states, business income, or significant investment gains, professional guidance is recommended.
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