Data Scientist Salary in Illinois
Take-home pay breakdown using 2025 tax rates — single filer, standard deduction
Full Tax Breakdown — Illinois
Based on national median Data Scientist salary of $112,590, single filer, 2025 tax year
Where Your Money Goes
Illinois vs. National Average
Flat 4.95% rate. Retirement and pension income fully exempt. Among highest property taxes in US.
Calculators for Data Scientists in Illinois
Data Scientist Salary in Other States
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★ No state income tax
Frequently Asked Questions — Data Scientist in Illinois
How much does a Data Scientist take home in Illinois?
On a national median salary of $112,590, a Data Scientist in Illinois takes home approximately $82,162/year ($6,847/month) after federal income tax, Illinois state income tax, and FICA taxes. This represents an effective total tax rate of 27.0%.
What is the Illinois state income tax rate for a Data Scientist?
On a $112,590 salary, the effective Illinois state income tax rate is 4.8%, resulting in $5,432 in state taxes annually. Illinois's marginal rate for this income level is higher, but credits and deductions reduce the effective rate.
How does Illinois compare to other states for Data Scientists?
State tax burden is a key factor in take-home pay comparison. Illinois's 4.8% effective state tax rate places it in the middle range nationally. To compare all states, use the "Salary by State" table above.
What other taxes does a Data Scientist pay in Illinois?
In addition to federal and state income taxes, workers pay FICA taxes: Social Security (6.2% on wages up to the $168,600 wage base in 2025) and Medicare (1.45%, plus 0.9% surcharge on earnings over $200,000). Local income taxes may also apply in some Illinois cities. Illinois's property tax rate is 2.2%, and the state sales tax rate is 6.3%.
Calculations use 2025 federal and state tax rates. Single filer, standard deduction. Does not include local taxes, pre-tax retirement contributions, or employer benefits. Salary data sourced from U.S. Bureau of Labor Statistics (BLS) OEWS. Last updated: March 2025. For personalized calculations, use the Paycheck Calculator.