Tax year 2026 · Updated October 4, 2026

Illinois Hourly Paycheck Calculator

Turn regular hours and time-and-a-half overtime into an estimated Illinois paycheck. Compare weekly gross pay, supported deductions and take-home pay using your payroll elections.

Illinois hourly paycheck calculator

Estimates for tax year 2026. Results update as you type.

Pay type

SalaryHourly

Hourly rate

Regular hours per week (excluding overtime)

Overtime hours per week (paid at 1.5×)Enter overtime separately: 45 total hours with 5 paid at time-and-a-half means 40 regular hours and 5 overtime hours. The calculator does not decide which hours qualify.

Pay frequency

Filing status (Form W-4, Step 1)

Illinois IL-W-4 settings

Illinois certificate electionMatch your existing certificate. IL-W-4 exempt certifies both federal and Illinois exemption. IL-W-5-NR affects Illinois only; any home-state withholding is separate. Eligibility is not determined here.

Basic IL-W-4 allowances (line 1)Each basic allowance is $2,925 annually in 2026.

Additional IL-W-4 allowances (line 2)Each additional allowance is $1,000 annually. Use the certificate’s worksheet count.

Extra Illinois withholding (line 3)

Additional dollars per paycheck. Both allowance counts default to zero and are independent of federal filing status.

W-4 details, retirement and benefits

My current federal W-4 claims exemption

Use an existing qualifying election on Form W-4. Federal income-tax withholding, including extras, becomes $0. FICA and state deductions remain separate. Eligibility is not checked.

Step 2(c) box is checked (two jobs, or spouse also works)

Step 3: dependents credit (annual $)

$2,200 per qualifying child under 17, $500 per other dependent.

Step 4(c): extra withholding per paycheck

Step 4(a): other annual income

Step 4(b): deductions beyond the standard deduction

401(k) / 403(b) contribution

Percent of gross pay, pre-tax (traditional).

Health premiums, HSA, FSA per paycheck

Section 125 items also reduce Social Security and Medicare wages.

After-tax deductions per paycheck

Roth 401(k), union dues, garnishments.

Blank adjustments count as 0 unless another default is stated. Pay, hours and an active custom rate need a value; enter 0 when appropriate.

Estimated take-home pay per week$705.44$36,683.04 per year · $3,056.92 per month

Illinois payroll withholding. The state income-tax line uses the Illinois automated formula and your IL-W-4 elections for regular pay. The annual amount projects those paycheck estimates over a year; it does not calculate your final state tax bill.

Annual and monthly figures assume the entered pay repeats for a full year. Wage caps are averaged across those paychecks; year-to-date pay and deductions are not tracked.

Estimated tax share

19.8%

Federal marginal rate

12%

Illinois marginal income-tax rate

4.95%

Line	Per paycheck	Full-year projection
Gross pay	$880.00	$45,760.00
Pre-tax retirement	$0.00	$0.00
Health, HSA, FSA (pre-tax)	$0.00	$0.00
Federal income-tax withholding	$63.68	$3,311.20
Social Security (6.2%)	$54.56	$2,837.12
Medicare (1.45%)	$12.76	$663.52
Illinois withholding	$43.56	$2,265.12
After-tax deductions	$0.00	$0.00
Take-home pay	$705.44	$36,683.04

Estimated tax share is the displayed federal withholding, FICA, state/local tax estimate and state payroll deductions divided by gross pay. Benefit deductions are excluded from that share; it is not your final income-tax rate.

Federal withholding follows IRS Publication 15-T for a 2020-or-later W-4. Social Security applies to the first $184,500 of wages in 2026.

From a timecard to a Illinois paycheck estimate

Use paid hours after unpaid breaks. Enter regular hours separately from overtime; putting all 45 hours in the regular field and another 5 in overtime would count those 5 hours twice.

Weekly gross = hourly rate × (regular hours + 1.5 × overtime hours)

For example, $20 × (40 + 1.5 × 5) gives $950 gross for a 45-hour week. The calculator repeats that week over 52 weeks and divides the annual amount by your selected pay frequency. Every two weeks uses 26 paychecks; twice a month uses 24, so it is an average rather than the actual hours in a particular half-month.

The Department of Labor's overtime guidance covers regular-rate and eligibility rules. This tool assumes the rate you enter is the applicable regular rate and the overtime hours you enter are paid at time-and-a-half. Daily overtime, double time, tipped pay and multiple hourly rates need separate treatment.

Hourly wage to take-home pay in Illinois (2026)

Weekly take-home pay for a single filer working 40 hours with a standard W-4 and no pre-tax deductions, zero IL-W-4 basic or additional allowances, no extra state withholding and no exemption election.

Weekly take-home pay by hourly rate in Illinois
Hourly rate	Gross per week	Take-home per week	Full-year take-home	Estimated tax share
$15.00 / hour	$600.00	$494.32	$25,705	17.6%
$20.00 / hour	$800.00	$645.12	$33,546	19.4%
$25.00 / hour	$1,000.00	$795.92	$41,388	20.4%
$30.00 / hour	$1,200.00	$946.72	$49,230	21.1%

What 5 or 10 overtime hours add at $20 an hour

Each row assumes 40 regular hours plus the stated overtime every week for a full year, a single filer, standard W-4, no benefit deductions and the same Illinois settings as the hourly table above. These figures are generated by this calculator; they do not predict a one-off overtime check.

Repeated-week overtime comparison in Illinois, 2026
Overtime hours	Gross per week	Estimated take-home	Extra take-home
0	$800.00	$645.12	$0.00
5	$950.00	$758.22	$113.09
10	$1,100.00	$871.32	$226.20

A qualifying federal overtime deduction is separate from the amount of overtime pay. The calculator does not decide eligibility or subtract it automatically. The IRS explains how an updated W-4 can reflect the expected deduction; Social Security and Medicare generally still apply. The examples use a W-4 with no adjustments.

The Illinois calculation used for these wages

The state income-tax line uses the Illinois automated formula and your IL-W-4 elections for regular pay. The annual amount projects those paycheck estimates over a year; it does not calculate your final state tax bill.

Official state payroll method. Enter your state certificate elections independently of your federal W-4.

Limits of this state estimate. Illinois payroll uses 4.95% after $2,925 per basic IL-W-4 line 1 allowance and $1,000 per additional line 2 allowance on an annual basis. Both counts default to zero; federal filing status does not select them. The automated formula uses the exact wage amount and can differ from the guide's wage-range tables. Withholding is rounded to cents per paycheck before annualizing, with line 3 extra withholding added after the regular calculation. Use exemption choices only to match existing qualifying certificates. IL-W-4 exempt certifies both federal and Illinois exemption; IL-W-5-NR exempts Illinois withholding only. Home-state withholding is not added automatically, and FICA remains separate. The IL-W-4 instructions limit return exemptions above the applicable adjusted-gross-income thresholds. Use your current certificate and its worksheet; eligibility, interstate wage allocation and a complete tax-return calculation are outside this estimate.

For the detailed state schedules, certificate examples and local-tax guidance, see how the Illinois state calculator works.

For a change in your hourly rate, the pay raise calculator shows the percentage and annualized increase. Compare the old and new rates above to include Illinois's supported taxes and payroll deductions.

Frequently asked questions

How is hourly take-home pay calculated in Illinois?

Gross pay is your hourly rate × hours, with overtime hours at 1.5× your rate. The calculator annualises that amount, works out federal withholding under IRS Publication 15-T, applies Social Security (6.2%) and Medicare (1.45%), then applies Illinois’s automated formula using your basic and additional IL-W-4 allowances and certificate election, and shows the result for your pay period.

What is $20 an hour after taxes in Illinois?

At 40 hours a week, $20 an hour is $800.00 gross per week. For a single filer with a standard W-4, zero IL-W-4 basic or additional allowances, no extra state withholding and no exemption election in 2026, take-home pay is about $645.12 a week, or $33,546 a year (an estimated tax share of gross pay of 19.4%).

How is overtime taxed in Illinois?

The calculator includes overtime in regular gross wages and applies your entered W-4 and the state method described here. Higher gross pay can increase withholding. This is a repeated-week projection, not a calculation of your final tax or refund. It does not determine a qualified overtime deduction; use the current IRS W-4 instructions to account for an eligible deduction.

Does Illinois have state income tax on hourly wages?

Yes. The state income-tax line uses the Illinois automated formula and your IL-W-4 elections for regular pay. The annual amount projects those paycheck estimates over a year; it does not calculate your final state tax bill. Hourly and salary inputs with the same annual gross wages and elections use the same calculation.

How many hours count as full time for this calculator?

There is no full-time eligibility test here. Enter regular paid hours excluding overtime, then enter time-and-a-half hours separately. The calculator does not classify your job, check daily overtime rules or determine the regular rate when bonuses, shift differentials or multiple pay rates apply.

Hourly paycheck calculators for other states

Sources and updates

Figures are for tax year 2026 and were checked against the sources below on September 5, 2026. Tax rules and rates can change. Each calculator identifies the method and limitations used.

This calculator gives estimates for information only and is not tax, legal or financial advice. Your employer's payroll system, local taxes, benefits and year-to-date wages can change the exact amounts on your pay stub. See how we calculate.