2026 tax year · Wisconsin
Marketplace seller taxes in Wisconsin
Etsy, eBay, Shopify and the rest report your gross and withhold nothing. The gap between that and what you are taxed on is your costs, in Wisconsin that gap is worth $7,151 in tax.
Take a driver who grossed $45,000 over 18,000 business miles. After mileage at 74.3 cents and the rest of the stack, worked through on the marketplace seller page $26,775 comes off and $18,225 is left as taxable profit. That profit is what Wisconsin and the IRS charge against.
What that leaves you owing in Wisconsin
Wisconsin uses graduated 2026 income tax brackets topping out at 7.65%, across 4 brackets, on top of federal income tax and self-employment tax.
| Self-employment tax | $2,575 |
| Federal income tax | $67 |
| Wisconsin income tax | $616 |
| Total tax | $3,258 |
| Effective rate on gross | 7.2% |
Earning more in Wisconsin
A single filer taking the standard deduction, this work as the only income, the calculator above handles the other filing statuses. Miles rise with earnings, so the deduction rises too, and the effective rate on gross climbs more slowly than it would for someone whose income grew without expenses attached:
| Volume | Gross | Mileage off | Taxable profit | Wisconsin tax | Total tax | Rate on gross |
|---|---|---|---|---|---|---|
| Part-time | $15,000 | $0 | $15,000 | $488 | $2,607 | 17.4% |
| Steady side income | $45,000 | $0 | $45,000 | $1,830 | $10,409 | 23.1% |
| Full-time | $72,000 | $0 | $72,000 | $3,160 | $17,963 | 24.9% |
Wisconsin specifics that change the number
Wisconsin is a community property state. In community property states, income earned during marriage is generally owned equally by both spouses. This affects QJV eligibility, MFS filing strategies, and retirement account contribution rules.
Selling into and out of Wisconsin
Income tax follows you: Wisconsin taxes your profit wherever the buyer was. Sales tax does not. Marketplace facilitator laws make the platform collect and remit sales tax on your behalf in most states, which is why a seller can have customers in all fifty and still file only one income tax return. Selling off-platform is where that stops being true.
On $18,225 of profit, what the states around Wisconsin would charge:
| State | Its tax | vs Wisconsin |
|---|---|---|
| Iowa | $693 | +$20 |
| Michigan | $775 | +$102 |
| Illinois | $902 | +$229 |
| Minnesota | $975 | +$302 |
- Iowa would take $20 more, $693 against Wisconsin's $673.
- Michigan would take $102 more, $775 against Wisconsin's $673.
- Illinois would take $229 more, $902 against Wisconsin's $673.
- Minnesota would take $302 more, $975 against Wisconsin's $673.
Marketplace seller tax questions in Wisconsin
How much should a Wisconsin seller set aside?
About 7.2% of gross on the $45,000 example, $3,258 across self-employment tax, federal income tax and $616 to Wisconsin. In practice that means moving about $72 of every $1,000 payout into a separate account the day it lands, and sending roughly $815 to the IRS each quarter, no platform withholds any of this for you. Set aside from each payout rather than finding it in April.
Does the $45,000 on my 1099-NEC match what Wisconsin taxes?
No. Wisconsin taxes profit, not gross. After $26,775 of deductions the taxable figure is $18,225, so the Wisconsin bill is $616 rather than what gross alone would suggest. The form reports what the platform paid out, it knows nothing about your costs, and no one subtracts them for you. On this example 60% of the gross never becomes taxable income, but only for the seller who kept the records to prove it.