Nurse Salary After Tax Illinois (2026)
Quick Answer
The average registered nurse (RN) in Illinois earns $75,000–$95,000 per year in 2026, with Chicago metro nurses typically at the upper end and downstate/rural nurses toward the lower end. After federal income tax, Illinois’s flat 4.95% state tax, and FICA, most Illinois RNs take home approximately $56,000–$72,000 net per year.
That works out to roughly $4,670–$6,000/month and $2,155–$2,770 per biweekly paycheck. Illinois’s flat state tax is simpler and often lower than progressive tax states like California or New York, making it a competitive state for nursing take-home pay despite modest base salaries.
Illinois offers a unique tax profile for nurses: a flat 4.95% state income tax that applies equally whether you earn $50,000 or $500,000. Unlike progressive tax states, Illinois nurses never face escalating state tax rates as they gain experience and move up the pay scale. Combined with competitive Chicago-area wages and strong union representation, Illinois presents a financially attractive option for nursing careers — especially for mid-to-senior RNs who would face higher marginal rates in states like California or New York.
Average Nurse Salary in Illinois
Nurse salaries in Illinois vary by region, with the Chicago metropolitan area (including Cook, DuPage, Lake, Kane, and Will counties) offering 15–25% higher pay than downstate markets. The table below reflects 2026 W-2 gross salary benchmarks for registered nurses across the state:
| Experience Level | Chicago Metro | Downstate IL |
|---|---|---|
| Entry-Level RN (0–2 years) | $68,000 – $78,000 | $58,000 – $68,000 |
| Mid-Level RN (3–7 years) | $78,000 – $95,000 | $68,000 – $82,000 |
| Experienced RN (8–15 years) | $95,000 – $115,000 | $82,000 – $98,000 |
| Senior / Charge RN | $110,000 – $135,000 | $95,000 – $115,000 |
| Travel Nurse (IL contracts) | $95,000 – $145,000+ | $85,000 – $125,000 |
The Chicago metro area — particularly Northwestern Medicine, Rush University Medical Center, UChicago Medicine, and Advocate Health — offers the state’s highest compensation. Smaller markets like Peoria, Rockford, Springfield, and Champaign-Urbana pay 12–20% below Chicago but offer lower cost of living and often more favorable nurse-to-patient ratios.
- ICU / Critical Care RN (Chicago): $98,000 – $125,000
- Emergency Room RN (Chicago): $95,000 – $120,000
- Operating Room RN: $92,000 – $118,000
- Labor & Delivery RN: $88,000 – $112,000
- Nurse Practitioner (NP): $115,000 – $150,000
- CRNA (Certified Registered Nurse Anesthetist): $175,000 – $230,000
Take-Home Pay After Taxes in Illinois
Illinois nurses benefit from one of the simplest state tax structures in the country: a flat 4.95% state income tax on all income, regardless of how much you earn. There are no brackets, no phase-outs, and no local income taxes anywhere in the state — including Chicago.
For an RN earning $75,000 gross (mid-level, single filer):
For an experienced Chicago RN earning $105,000 gross:
Example Salary Breakdown (Real Numbers)
Let’s break down a realistic mid-level Illinois RN earning $88,000 gross per year, filing as single with the 2026 standard deduction of $15,000.
| Component | Annual Amount | % of Gross |
|---|---|---|
| Gross Salary | $88,000 | 100% |
| Federal Income Tax (2026 brackets) | – $12,124 | 13.8% |
| Illinois State Income Tax (4.95% flat) | – $4,356 | 4.95% |
| Social Security (6.2%) | – $5,456 | 6.2% |
| Medicare (1.45%) | – $1,276 | 1.45% |
| Health Insurance Premium (pre-tax est.) | – $2,400 | 2.7% |
| Estimated Net Income | $62,388 | 70.9% |
On a biweekly pay schedule (26 paychecks/year), this nurse takes home approximately $2,400 per paycheck after all taxes and pre-tax deductions.
2026 OBBB Act: What Illinois Nurses Need to Know
2026 Tax Law Update — One Big Beautiful Bill (OBBB) Act
The One Big Beautiful Bill (OBBB) Act introduced new W-2 Box 12 codes effective for tax year 2026. Code TP covers qualified tip income exclusions and Code TT covers qualifying overtime pay deductions. Code TT is directly relevant to Illinois nurses who regularly work overtime shifts.
Illinois conforms to the federal OBBB Act overtime deduction for state tax purposes. This means if your W-2 shows Box 12 Code TT, that overtime income is deductible from both federal and Illinois state taxable income — a rare advantage. Most states either don’t conform (like New York) or have no state tax (like Texas). Illinois nurses get the full benefit: federal savings plus an additional 4.95% state savings on all qualifying overtime.
| Annual OT Income (Code TT) | Federal Tax Saved (12% bracket) | IL State Tax Saved (4.95%) | Total OBBB Savings |
|---|---|---|---|
| $8,000 OT | ~$960 | ~$396 | ~$1,356 |
| $12,000 OT | ~$1,440 | ~$594 | ~$2,034 |
| $18,000 OT (22% bracket) | ~$3,960 | ~$891 | ~$4,851 |
| Heavy OT RN (22% bracket) | ~$3,960 | ~$891 | ~$4,851/yr |
Because Illinois conforms to the federal overtime deduction, nurses working heavy overtime in the 22% federal bracket can save nearly $5,000 per year in combined federal and state taxes — one of the largest OBBB Act benefits available to nurses in any state. Verify your employer is correctly coding overtime as Box 12 Code TT on your W-2 to claim this deduction.
How Much Tax Do Nurses Pay in Illinois?
Illinois nurses face one of the most straightforward tax calculations in the country. Here’s what you pay:
- Federal Income Tax: Progressive brackets from 10% to 37%. Most Illinois RNs earning $75,000–$105,000 fall in the 12% or 22% federal marginal bracket after the $15,000 standard deduction, with an effective federal rate of 13–18%.
- Illinois State Income Tax (4.95% flat): A flat 4.95% on all W-2 income, regardless of how much you earn. An RN making $60,000 pays 4.95%, and an RN making $160,000 also pays 4.95%. No brackets, no surprises. Illinois does not allow a standard deduction for state purposes — the 4.95% applies to your full gross income.
- No Local Income Tax: Unlike New York City (3.876% local tax) or some Ohio cities, Illinois has zero local income tax anywhere in the state. Chicago residents pay the same 4.95% state rate as nurses in Peoria or Springfield.
- Social Security (6.2%): Applied to all W-2 wages up to the $176,100 Social Security wage base in 2026. Most staff RNs earn below this cap, so the full 6.2% applies throughout the year.
- Medicare (1.45%): Flat 1.45% on all wages with no cap. The 0.9% Additional Medicare Tax applies to income above $200,000 for single filers — reached only by high-earning CRNAs and some senior NPs.
Combined, an Illinois RN earning $88,000 has a total effective tax rate of approximately 26–28% — noticeably lower than California (30–34%) or New York (31–35%) at the same gross income. The flat state tax is the key differentiator, especially for high earners who would face 9.3%+ marginal state rates in California.
Illinois vs Other States (Take-Home Comparison)
Illinois’s flat tax makes it competitive with much higher-paying states once you account for their progressive state taxes. Here’s how a nurse earning $88,000 gross fares across five states:
| State | Gross Salary | State + Local Tax | Est. Net Annual | Monthly Take-Home |
|---|---|---|---|---|
| Illinois | $88,000 | ~$4,356 (4.95%) | ~$62,400 | ~$5,200 |
| California | $88,000 | ~$5,020 (5.7% eff.) | ~$61,200 | ~$5,100 |
| New York (upstate) | $88,000 | ~$5,016 (5.7% eff.) | ~$61,300 | ~$5,110 |
| Texas | $88,000 | $0 | ~$65,000 | ~$5,420 |
| Florida | $88,000 | $0 | ~$65,000 | ~$5,420 |
| IL vs CA/NY | Illinois nurses net ~$1,100–$1,200 more/year vs CA/NY at same gross | +$90–$100/mo | ||
At $88,000 gross, Illinois is nearly tied with California and New York on take-home pay — Illinois slightly wins due to the flat tax. The real gap emerges at higher incomes: a senior RN earning $120,000 in Illinois pays 4.95% state tax ($5,940), while the same nurse in California pays 9.3% ($11,160) — a difference of $5,220/year. For experienced and charge nurses, Illinois’s flat tax becomes a major financial advantage over progressive-tax states.
Texas and Florida still win on pure take-home at equivalent gross salaries (no state tax beats a 4.95% tax), but Illinois’s Chicago-area wages are typically 8–15% higher than comparable Texas markets, often closing the net income gap entirely.
Factors That Affect Your Take-Home Pay
Your actual Illinois nurse paycheck depends on multiple variables beyond base salary. These factors can significantly swing your net pay:
- Filing Status: Married filing jointly reduces federal tax substantially. A married Illinois nurse household with two earners of $80,000 each can save $5,000–$8,000/year in combined federal taxes versus two single filers at the same total income, thanks to wider joint brackets. Illinois’s flat 4.95% state tax doesn’t change based on filing status — it’s the same rate regardless.
- OBBB Act Code TT (Overtime): Illinois is one of the few states that conforms to the federal OBBB overtime deduction. Qualifying overtime reported as Box 12 Code TT is deductible from both federal and Illinois taxable income — providing combined savings of 16.95% (12% federal + 4.95% state) or 26.95% (22% federal + 4.95% state) depending on your federal bracket. For nurses working 10–15 hours of OT per week, this can add $2,000–$5,000 in annual tax savings.
- 401(k) / 403(b) Contributions: Pre-tax retirement contributions reduce both federal and Illinois taxable income. The 2026 contribution limit is $23,500. For an Illinois nurse in the 12% federal bracket, every $1,000 contributed saves $120 federal + $49.50 state = $169.50 in combined taxes. In the 22% bracket, savings jump to $269.50 per $1,000 contributed.
- Shift Differentials: Night, weekend, and holiday differentials are fully taxable but can add $5,000–$12,000/year to gross. In Illinois’s combined ~27% effective tax rate (federal + state), approximately $1,350–$3,240 of that differential goes to taxes — but the remaining $3,660–$8,760 still meaningfully boosts net income.
- Union Dues: Illinois Nurses Association (INA) and other union dues are typically $700–$1,200/year and are deducted post-tax. However, union contracts at Northwestern, Rush, UChicago Medicine, and Advocate Health often secure employer-paid health insurance, pension contributions (5–7% employer match), and guaranteed step increases that more than offset the cost.
- Health Insurance Premiums: Pre-tax employer health insurance premiums reduce taxable income for both federal and Illinois purposes. Large Chicago health systems often offer strong benefits packages with significant pre-tax elections available — worth $6,000–$12,000/year in premium value.
- Travel Nursing Stipends: Travel nurses on Illinois contracts receive both taxable hourly pay and non-taxable housing/meal stipends. Stipends (often $1,500–$2,800/week) are completely tax-free if you maintain a tax home outside the assignment area, dramatically boosting effective net pay.
- Signing Bonuses: Many Illinois hospitals offer $3,000–$15,000 signing bonuses in 2026, particularly for specialty units. Bonuses are withheld at 22% federal + 4.95% state = 26.95% — but if your annual income puts you in the 12% federal bracket at filing, you’ll receive a refund of the over-withheld federal amount.
- Pension Contributions: Some Illinois health systems participate in defined-benefit pension plans with mandatory employee contributions (typically 6–8% of gross). These are deducted post-tax but build toward guaranteed retirement income — a significant long-term benefit not available at most private-sector employers.
Calculate Your Exact Illinois Nurse Take-Home Pay
Your specific paycheck depends on your gross, filing status, benefit elections, overtime, and whether the OBBB Act Code TT applies. Use these tools for a precise estimate:
- SmartAsset Illinois Paycheck Calculator – Automatically applies Illinois’s 4.95% flat tax; enter gross and filing status for a clean estimate
- ADP Salary Paycheck Calculator – Works for hourly and salaried inputs; good for modeling different overtime scenarios
- PaycheckCity.com (Illinois) – Allows pre-tax deduction inputs (401k, health insurance) for a more accurate net pay figure
- Illinois Department of Revenue Withholding Calculator – Official state tool for verifying IL withholding accuracy
For OBBB Act Code TT (overtime) deductions, use tax filing software that supports Box 12 Code TT for free and automatically conforms to Illinois’s adoption of the deduction. Verify your software handles Illinois conformity — most major packages (TurboTax, H&R Block, FreeTaxUSA) updated for 2026 to handle this, but some budget/free versions may require manual entry.
Estimates based on 2026 federal tax brackets and Illinois’s 4.95% flat income tax. OBBB Act Code TT (overtime deduction) applies to both federal and Illinois state tax; Illinois conforms to the federal provision. No local income taxes apply anywhere in Illinois. Individual results vary by filing status, deductions, and employer benefits. Consult a licensed CPA or tax professional for personalized advice. All figures are approximate and for educational purposes only.