Estimate your quarterly taxes as a self-employed worker in Madison for 2026, including self-employment tax, federal income tax, and Wisconsin state income tax.
Last updated: May 2026 · Data: MIT Living Wage Calculator, C2ER, U.S. Census, BLS, IRS, state and city sources
Madison freelancers pay federal self-employment tax, federal income tax, and Wisconsin state income tax (3.54% to 7.65%). Wisconsin has four income tax brackets with a top rate of 7.65%. The state offers significant retirement income exclusions and does not tax Social Security benefits.
| Tax Component | Rate / Detail (2026) |
|---|---|
| Self-Employment Tax | 15.3% on 92.35% of net profit |
| Social Security portion | 12.4% on first $176,100 |
| Medicare portion | 2.9% (no cap) |
| SE Tax Deduction | Deduct half of SE tax from income |
| Federal Standard Deduction (Single) | $15,000 |
| Wisconsin State Income Tax | 3.54% to 7.65% |
| Madison Local Income Tax | None |
| Quarterly Due Dates | April 15, June 16, September 15, January 15 |
Madison is the capital of Wisconsin and home to the University of Wisconsin, with an economy anchored by state government, higher education and research, healthcare and biotechnology, insurance, and a fast-growing technology sector.
| Local Metric | Madison (2026 estimate) |
|---|---|
| Metro population | 270,000 |
| County / jurisdiction | Dane County |
| Cost of living index (US avg = 100) | 102 |
| MIT living wage, single adult | $21.00/hour |
| MIT living wage, one earner supporting a family of four | $42.50/hour |
| Applicable minimum wage | $7.25/hour |
| Average rent, 1-bedroom | $1,500/month |
| Average rent, 2-bedroom | $1,800/month |
| Median home price | $380,000 |
| Median household income | $72,000/year |
| Combined sales tax rate | 5.5% |
| Effective property tax rate | 1.85% 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.
If you expect to owe at least $1,000 in federal tax, you generally must pay quarterly. This covers freelancers, contractors, sole proprietors, and LLC members in Madison. Wisconsin also requires state estimated payments if you expect to owe $500 or more in state income tax.
Federal estimated taxes are due April 15, June 16, September 15, and January 15. Wisconsin uses the same quarterly schedule as the IRS for its state estimated payments.
A common rule is 25% to 35% of net profit. Because Wisconsin adds state income tax (3.54% to 7.65%) on top of federal taxes, Madison freelancers often set aside toward the higher end. Use the calculator above for your numbers.
The self-employment tax rate is 15.3% (12.4% Social Security up to $176,100 of net earnings, plus 2.9% Medicare with no cap). It applies to 92.35% of net profit, and half of it is deductible against income tax.
Madison does not levy a local personal income tax. Your estimated payments cover federal taxes and Wisconsin state income tax.