Connecticut vs Illinois: Take-Home Pay (2026)
Same salary, two tax codes — computed for tax year 2026, single filer with standard deduction.
Quick answer
According to netpaytally.com's computations, a $75,000 salary keeps $1,018 more per year in Connecticut than in Illinois ($59,043 vs $58,025, tax year 2026) — the entire gap comes from state tax, since federal and FICA are identical everywhere.
Illinois's single 4.95% rate meets Connecticut's 7-step ladder (up to 6.99%), and which system bites harder depends on where a salary sits. Connecticut leads at $75,000, but past about $200,000 the balance tips the other way as the ladder's top steps overtake the flat rate. The federal share ($7,670 income tax, $5,738 FICA) cancels out of this comparison entirely.
| Salary | Connecticut net | Illinois net | Difference |
|---|---|---|---|
| $50,000 | $41,030 | $40,025 | $1,005 |
| $75,000 | $59,043 | $58,025 | $1,018 |
| $100,000 | $75,255 | $74,375 | $880 |
| $150,000 | $106,941 | $106,511 | $430 |
| $250,000 | $170,157 | $170,952 | $795 |
| Connecticut | Illinois | |
|---|---|---|
| Tax type | Graduated | Flat |
| Top rate | 6.99% | 4.95% |
| State tax at $75,000 | $2,550 | $3,568 |
| Take-home rank | #24 of 51 | #46 of 51 |
Which state has better take-home pay, Connecticut or Illinois?
At $75,000, Connecticut keeps $1,018 more per year than Illinois ($59,043 vs $58,025, tax year 2026).
Why is take-home pay different if federal tax is the same?
Everything above the federal line is state policy: Illinois's one-rate system against Connecticut's bracket ladder. At $75,000 that structural difference is worth $1,018 a year.
Is Connecticut ahead at every salary level?
Only up to a point — past about $200,000 the balance tips to Illinois as the bracket ladder's top steps overtake the flat rate.
Which state ranks higher for take-home pay overall?
Connecticut ranks #24 of 51 and Illinois ranks #46 of 51 nationally for take-home pay at $75,000.
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