Radiation Therapists in Illinois
May 2025 wages · tax year 2026
You keep
$90,407
after federal, FICA and Illinois tax
Tax takes
$34,193
27.4% of the whole
Worth, in national money
$91,454
Illinois costs less than average
On that salary you would be around the 25th percentile for this work in Illinois — roughly, since only five points along the band are published.
One filer, standard deduction, no dependants and nothing paid in before tax — the same household the rest of this page uses, so the comparison holds. City and school-district income taxes are not included.
Median here
$124,600
Kept after tax
$90,407
Worth in national money
$91,454
State rank
7
of 46 states
What this pays, and what it is worth
- Illinois is one of the better-paying states for radiation therapists. The middle earner takes $124,600, which ranks 7 of 46 states with published figures. That is about 18.32% above the national middle.
- Locally, this pays well. Among 494 occupations Illinois reports, radiation therapists comes in at 34 — comfortably in the upper quarter.
- Prices here sit close to the national average, so the adjustment changes little. From $124,600 the take-home is $90,407, which is worth about $91,454 in comparable money. Tax does most of the work here, not cost of living. The average is lower, $114,470, so pay clusters nearer the top than usual.
- Illinois ranks 7 of 46 states publishing a median for radiation therapists, at $124,600 — about 18.32% above the national median. A state's position on nominal pay is the figure wage tables report and the least informative of the three on this page, because it survives neither the tax adjustment nor the price adjustment intact for most occupations.
- Radiation therapists ranks 34 of 494 occupations by median in Illinois, in the top quartile. Within-state position is largely independent of national position, so this holds regardless of how the state compares to others for the same work.
- Illinois's price level is near the national average, so price deflation is close to neutral for radiation therapists on its $124,600 median: $90,407 retained after tax becomes $91,454 in national-average terms. Where the price adjustment is small, the tax stack is the dominant determinant of the real outcome. The mean of $114,470 falls below the median, a left skew that is uncommon in wage data.
Compare this career across states
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Pay band: Radiation Therapists
The state median for this job
| Lowest tenth earn under | $96,340 |
|---|---|
| Half earn under | $124,600 |
| Top tenth earn over | $124,850 |
| This salary | $124,600 |
Positions between the published tenth, quarter, half, three-quarter and ninetieth points are estimated by straight line.
The same pay, somewhere else
The state median for this job
| Take-home in Illinois | $90,407 |
|---|---|
| Take-home in Texas | $96,430 |
| Once local prices are leveledBEA price parity | +$7,779 |
State income tax and state price levels only. No city income tax, and no housing market.
What you would need there
The state median for this job
| To match take-home only | $115,959 |
|---|---|
| You could take a cut of | −$10,825 |
| Prices in Texas | 97 vs 99 |
State taxes and state price levels only. No city tax, and no housing market.
Sources and assumptions
- Treat $124,600 as a midpoint for Illinois, not a promise. The tenth percentile is $96,340 and the ninetieth is $124,850 — a wide band, and where you land in it depends on far more than the state.
- In Illinois the take-home figure of $90,407, from $124,600, assumes one filer, no dependants, and nothing paid into a pension before tax. Each of those lowers the bill, so treat it as the plain case. City and school-district income taxes are not included either, and in a few states those are real money. It ranks 34 of 494 occupations here.
- Two cautions on $91,454, the adjusted value of that $124,600 median. It levels out prices with a single number for all of Illinois. No actual address matches that. The wage figures and price figures are also from different years. Each is published on its own timetable. This work sits at 34 of 494 locally.
- The Illinois median of $124,600 describes the midpoint of a distribution spanning $96,340 to $124,850. Because that spread is typically larger than the interstate spread, a state median is a weak predictor for any individual worker in this occupation.
- Take-home for Illinois is computed for a single filer taking the standard deduction with no dependants and no pre-tax contributions, giving $90,407 from $124,600. Each omitted item reduces taxable income, so the figure is a lower bound on retained pay for this household shape. Municipal and school-district income taxes are excluded, which understates the burden materially in Ohio, Pennsylvania and Maryland. The occupation ranks 34 of 494 locally.
- This $91,454 adjusted figure, worked from $124,600, rests on a state-level price parity averaging over within-state dispersion larger than much of the between-state dispersion. Wage and price vintages differ by publication schedule. The result is directionally sound and not address-specific, for work at 34 of 494 in the state. The occupation ranks 34 of 494 locally.
Questions people ask
Is this the average pay for the job?
Half earn more than this and half earn less. The average sits at $114,470 because a long tail of high pay lifts it, so the two answer different questions.
How much does pay for this job actually vary?
The range here is narrow. From $96,340 at the bottom tenth to $124,850 at the top, pay for this work clusters rather than spreads.
What does this pay actually buy where I live?
Further than the number implies. Illinois is cheaper than the national average, so this take-home behaves like $91,454 in national terms.
Where does the difference between the wage and my paycheck go?
Into four separate taxes, not one. Federal income tax, Social Security and Medicare apply everywhere, and Illinois adds its own income tax on top — which is why $90,407 of this wage survives to your account.
Why is this job missing from some states?
The survey withholds small samples rather than publish an unreliable number. Pay appears for 46 states here, and a missing state means too few reports, not no jobs.
How does the published median differ from the mean for this occupation?
The median is the midpoint of the distribution; the mean for this occupation in Illinois is $114,470. Wage distributions are right-skewed, so the mean exceeds the median wherever a minority earn substantially more. BLS publishes both because substituting one for the other misstates a typical worker's pay.
What is the dispersion of this occupation's wage distribution?
The tenth-to-ninetieth percentile span ($96,340 to $124,850) sits at or below the family's median dispersion, indicating relatively standardized compensation. Percentiles are published per state, so this dispersion is specific to Illinois rather than a national figure.
What is this occupation's price-adjusted compensation in this state?
Illinois's regional price parity is at or below the national average, so nominal wages understate purchasing power. Take-home deflated by the state price level is $91,454 in national-average terms. The adjustment uses an all-items index and does not isolate housing.
What accounts for the gap between gross wage and take-home here?
Take-home of $90,407 reflects federal income tax, OASDI, Medicare and Illinois income tax for a single filer with no adjustments. The state layer is levied in addition to the federal one; only its rate and base differ between states.
Why does this occupation lack published estimates in every state?
BLS suppresses estimates failing disclosure or reliability criteria. This occupation has published state-level estimates in 46 of the fifty-one jurisdictions. Suppression reflects sample size and confidentiality rules, and cannot be read as an absence of employment.