Estimate your self-employment tax in Aurora for 2026: the 15.3% SE tax, the deductible half, federal income tax, state income tax, and quarterly payments.
Last updated: May 2026 · Data: MIT Living Wage Calculator, C2ER, U.S. Census, BLS, IRS, state and city sources
Aurora self-employed workers pay federal SE tax and federal income tax, plus Illinois state income tax (Flat 4.95%). Illinois has a constitutionally mandated flat income tax rate, currently set at 4.95%. A 2020 ballot measure to allow graduated rates was rejected by voters. The state also does not tax retirement income.
| Net Profit | SE Tax | Half-SE Deduction | Total Est. Tax | Per Quarter |
|---|---|---|---|---|
| $30,000 | $4,239 | $2,119 | $6,184 | $1,546 |
| $50,000 | $7,065 | $3,532 | $12,160 | $3,040 |
| $75,000 | $10,597 | $5,299 | $20,253 | $5,063 |
| $100,000 | $14,130 | $7,065 | $30,047 | $7,512 |
| $150,000 | $21,194 | $10,597 | $50,056 | $12,514 |
Single filer, standard deduction. Total tax = SE tax + federal income tax + Illinois state tax. Estimates only.
Aurora is the second-largest city in Illinois, anchoring the Fox Valley west of Chicago, with a diverse economy spanning manufacturing, healthcare, data centers, a riverboat casino, and retail, and a population spread across four counties.
| Local Metric | Aurora (2026 estimate) |
|---|---|
| Metro population | 180,000 |
| County / jurisdiction | Kane County |
| Cost of living index (US avg = 100) | 105 |
| MIT living wage, single adult | $21.00/hour |
| MIT living wage, one earner supporting a family of four | $42.00/hour |
| Applicable minimum wage | $15.00/hour |
| Average rent, 1-bedroom | $1,450/month |
| Average rent, 2-bedroom | $1,750/month |
| Median home price | $300,000 |
| Median household income | $83,000/year |
| Combined sales tax rate | 8.25% |
| Effective property tax rate | 2.2% of value/year |
Local figures are 2026 estimates compiled from the MIT Living Wage Calculator, the C2ER Cost of Living Index, U.S. Census and Zillow housing data, and city and county sources. Verify current figures before relying on them.
The federal SE tax rate is 15.3% (12.4% Social Security plus 2.9% Medicare), the same in Aurora as everywhere. It applies to 92.35% of net profit; Social Security stops at $176,100 of net earnings.
Illinois taxes self-employment income as ordinary income (Flat 4.95%), so Aurora freelancers owe state tax on top of federal.
On $60,000 of net profit in Aurora, estimated total tax (SE plus federal plus state) is about $15,148, or roughly $3,787 per quarter.
Aurora does not levy a local self-employment or income tax. Business owners should still budget for any required local license.
Business expenses that lower net profit (equipment, software, home office, mileage) reduce both SE tax and income tax. The deductible half of SE tax, self-employed health insurance, and retirement contributions reduce income tax.