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Illinois paycheck calculator

Federal + state · Tax year 2026 · Estimates only · Reviewed 2026-07-21

Estimate Illinois take-home pay after federal tax, FICA, and Illinois flat-rate state income tax.

Your inputs

Federal + state · Tax year 2026 · Estimates only

State
401(k), HSA, Roth & local tax (optional)
Optional deductions (provident fund, other)

Estimated take-home

$1,893.45

per biweekly · tax year 2026 · reviewed 2026-07-22

~21.1% effective tax on gross

Federal taxable brackets (simplified single)

0Your income →
Gross pay
$2,400.00
Federal income tax (est.)
-$204.15
Social Security
-$148.80
Medicare
-$34.80
State income tax (est.)
-$118.80
Net (take-home)
$1,893.45

Annual net ~ $49,229.60 · Annual gross ~ $62,400.00

How we calculate
  • Estimates only — not tax, legal, or payroll advice.
  • Federal tax uses simplified annualization + 2026 brackets/standard deduction (not full IRS Pub 15-T withholding).
  • Traditional 401(k) reduces income tax only; HSA/§125 also reduces FICA. Roth is post-tax.
  • State tax model: flat. See docs/TAX_SOURCES.md.
  • FICA uses 2026 Social Security wage base $184,500.
  • Tables last reviewed: 2026-07-22.

Full methodology →

Example scenarios for Illinois

Use these as starting points — then adjust the calculator above to match your hours, benefits, and filing status.

  • Hourly worker in Illinois

    Switch the calculator to hourly, enter your rate and hours per pay period, and select Illinois. Busy weeks with overtime should be modeled separately using the overtime tool, then totaled here for tax estimates.

    Illinois overtime calculator

  • $60,000 salary, paid biweekly

    Enter about $2,307.69 gross biweekly (or use monthly $5,000) with single filing status to explore a mid-salary Illinois scenario. Adjust pre-tax deductions to see how 401(k) contributions change estimated take-home.

  • Compare another region

    Open a second tab with an identical salary on a neighboring state’s paycheck page. Keep filing status and frequency the same so the only variable is regional tax posture.

    Browse all US states

Estimate Illinois take-home pay after federal tax, FICA, and Illinois flat-rate state income tax.

Illinois uses a flat state income tax rate in this model (currently treated as 4.95%), which is simpler than progressive systems like California or New York but still reduces net pay versus no-tax states.

Results are estimates for tax year 2026.

Illinois flat tax

We apply a flat Illinois state rate to wages after pre-tax deductions in this estimate. Local taxes are not fully modeled.

Federal and FICA

Federal brackets and FICA follow the same national model used for other states.

Overtime in Illinois

Many Illinois employees are covered by FLSA overtime (1.5× after 40 hours/week). Check state and employer rules for exceptions.

Example: monthly Illinois paycheck

A $5,500 monthly gross salary in Illinois will show federal, FICA, and flat state tax estimates. Compare with Indiana or Wisconsin pages if you are considering a cross-border move.

Also try the Illinois overtime calculator or the self-employment / 1099 tax calculator. Also: pay converter.

Frequently asked questions

Does Illinois have a flat income tax?

Illinois uses a flat state income tax structure in this calculator’s estimate model.

Do I still pay federal taxes in Illinois?

Yes. Federal income tax and FICA apply in addition to Illinois state tax.

Are local Illinois taxes included?

Local taxes are not fully modeled. Your stub may include additional withholdings.

Is this tax advice?

No. These are educational estimates only.

Related guides

Other states