Self-Employed Tax Calculator — Wisconsin (2026)
Self-employed in Wisconsin? Your tax bill has three layers that a W-2 employee never sees in full: 15.3% self-employment tax on 92.35% of net profit, federal income tax, and Wisconsin state income tax. This calculator applies all three to your 2026 net profit and shows the quarterly amount you should be setting aside. Wisconsin uses a progressive income tax with 4 brackets running from 3.50% up to 7.65%, applied after a state standard deduction of $13,230.
Wisconsin Self-Employed Tax Calculator
Gross 1099 income minus business expenses.
Self-employment tax vs Wisconsin income tax
Self-employment tax is federal and identical in all 50 states: 12.4% Social Security up to $184,500 of net earnings plus 2.9% Medicare with no cap. Half of it is deductible against income tax, which is why the calculator subtracts it before applying brackets.
Wisconsin then taxes essentially the same profit figure at 3.50%–7.65%. On $80,000 of net profit that adds roughly $2,853 to the bill.
Wisconsin has no separate city or county income tax, so the state figure above is the full sub-federal income tax you pay.
Deductions that matter for Wisconsin freelancers
Net profit — not gross revenue — drives every number here. Ordinary and necessary business expenses reduce SE tax, federal tax, and Wisconsin tax simultaneously: the 2026 standard mileage rate of $0.67/mile, home-office square footage, software, equipment, professional insurance, and the self-employed health insurance deduction.
Retirement plans go further. A SEP-IRA or solo 401(k) reduces income tax (though not SE tax) and is often the largest single deduction available to a profitable manufacturing contractor in Milwaukee.
Working for yourself in Wisconsin
Wisconsin's economy leans on manufacturing, brewing, and healthcare, which shapes the contractor market around Milwaukee — and your fixed costs. With one-bedroom rent near $1,300, a freelancer needs meaningfully more gross revenue than an employee to reach the same lifestyle, because there is no employer paying half of FICA.
Wisconsin's middle 5.3% bracket covers a huge income range — from $28K all the way to $315K — meaning most workers face the same marginal rate.
Local and payroll taxes Wisconsin adds on top
Wisconsin adds no state-mandated employee payroll deduction beyond FICA, so nothing extra is taken from your gross pay at the state level.
Wisconsin has no separate city or county income tax, so the state figure above is the full sub-federal income tax you pay.
Nobody withholds these for you when you are self-employed in Wisconsin. Local wage taxes, city business licences and gross-receipts style levies are yours to register for and remit alongside your quarterly federal and state estimates.
Working across a state line from Wisconsin
Wisconsin holds income-tax reciprocity agreements with Illinois, Indiana, Kentucky and Michigan. If you commute between them, your wages are taxed only by your state of residence — file the exemption certificate with your employer so the wrong state is not withheld from every paycheck.
Remote and hybrid work complicates this further: most states tax income where the work is physically performed, so a Milwaukee resident spending part of the year at a client site in Illinois may owe a nonresident return there. Keep a day-count log if you split time between states.
The rest of your Wisconsin tax bill
Wisconsin charges a 5% state sales tax, homeowners pay an average effective property tax of 1.61% of market value, and the minimum wage in force during 2026 is $7.25 an hour.
County taxes bring most combined rates to 5.5%, and Milwaukee to 7.9%.
Income tax is only one part of a state's take. Wisconsin recovers revenue through sales and property tax as well, which is why headline income tax rates alone are a poor guide to how far a salary really goes. Wisconsin exempts Social Security and offers a retirement income subtraction for lower-income filers 65+.
Wisconsin vs Illinois on the same salary
On a $90,000 salary, a single filer keeps about $68,463 a year in Wisconsin against roughly $67,690 in Illinois — a difference of $773, or $64 a month.
Effective combined rates are 23.9% in Wisconsin and 24.8% in Illinois. Set that gap against living costs: index 96 here versus 93 there, with property tax at 1.61% and 2.07% respectively.
Wisconsin income tax brackets 2026 (single filer)
| Taxable income | Rate |
|---|---|
| $0 – $14,320 | 3.50% |
| $14,320 – $28,640 | 4.40% |
| $28,640 – $315,310 | 5.30% |
| $315,310 and up | 7.65% |