Hiring your first employee in Wisconsin

What do you have to register for before your first payroll?

Wisconsin half combines. One Business Tax Registration at the Department of Revenue covers your withholding account and your seller's permit or use tax certificate together, and one $20 fee buys both for two years, so a business that hires and sells here registers once with Revenue rather than twice. Unemployment insurance is a different agency entirely: you file a separate New Employer Registration with the Department of Workforce Development and get a separate account number and a separate quarterly filing calendar. Workers compensation is a third track with no state account at all, because you buy a policy from a licensed private insurer and the insurer files proof of coverage with the state for you. Plan on two registrations and one insurance purchase.

Does Wisconsin require income tax withholding?

Yes. You register with the Wisconsin Department of Revenue, before you first withhold wisconsin income tax from an employee's wages; revenue asks that you apply for the related seller's permit at least three weeks before opening if you also sell here.

You owe Wisconsin withholding if you pay wages to a Wisconsin resident, wherever the work is done, or to a nonresident for services performed in Wisconsin, and you are engaged in, licensed to do, or transacting business in the state. Two carve-outs matter to an out-of-state employer. Wisconsin has reciprocity with Illinois, Indiana, Kentucky and Michigan, so a resident of one of those four who gives you a completed Form W-220 is not subject to Wisconsin withholding, and you keep the form rather than filing it. Separately, there is a small-dollar exception for a nonresident from a non-reciprocity state only where the employer is an interstate air carrier or where you can reasonably expect the employee's annual Wisconsin earnings to be under $2,000. Registration costs $20 and lasts two years, then $10 to renew, and the same registration carries your seller's permit if you have one. Every new employee also completes a Wisconsin Form WT-4 alongside the federal W-4, and the WT-4 doubles as an acceptable new hire report.

What unemployment insurance does Wisconsin charge a new employer?

A new Wisconsin employer pays 3.05% on the first $14,000 each employee earns, so roughly $427 per employee in the first year. Schedule D, the lowest of Wisconsin's four schedules, is in effect for 2026, and the taxable wage base is $14,000 per employee. The stored 3.05% is the 2026 new employer rate for an ordinary business whose payroll is under $500,000, made up of a 2.50% basic rate and a 0.55% solvency rate. Three other new employer rates exist and you should check which one you are: payroll of $500,000 or more pays 3.25%, a new construction employer under $500,000 pays 2.50%, and a new construction employer at $500,000 or more pays 2.70%. Construction is cheaper than everything else in 2026, which is a reversal of 2024 and 2025 when construction paid 2.90% and 3.10%. The new employer rate applies for your first three calendar years. You become a covered employer, and liable back to January 1 of that year, as soon as you pay $1,500 of wages in any quarter or employ anyone for part of a day in 20 weeks of a calendar year, and separately you are liable the moment you owe federal unemployment tax on Wisconsin wages. Agricultural, domestic and nonprofit employers have their own higher triggers. None of this may be deducted from employee pay.

Do you need workers compensation insurance in Wisconsin?

Yes, from your first employee. Wisconsin sets no headcount to reach, so there is no free window before coverage is required.

• any employer with three or more full-time or part-time employees, effective the day the third person is employed
• any employer with one or more full-time or part-time employees that has paid gross combined wages of $500 or more in any calendar quarter for work done in Wisconsin, effective the 10th day of the first month of the next quarter
• farms employing six or more workers on the same day for 20 days, consecutive or not, in a calendar year, effective within 10 days after the 20th day
• out-of-state employers with any employees working in Wisconsin, who must hold a policy from a Wisconsin-licensed insurer naming Wisconsin in section 3-A of the declarations page

The stored threshold of 1 is deliberate. Wisconsin has two triggers and either one binds you, so the headline answer of three employees is the one that misleads people. A single part-time employee paid $500 in gross wages across a calendar quarter puts you in scope by the 10th day of the following quarter, which is almost any real hire. The three-employee trigger is separate and immediate: a 1947 Wisconsin Supreme Court case held that employing three people for a single moment is enough, and the legislature wrote that into the definition of employer in 2021 Wisconsin Act 232. Relatives, minors, part-timers and corporate officers all count. Wisconsin does not sell the insurance, so you buy from one of roughly 300 licensed carriers, and it is illegal to deduct any part of the premium from employee pay. Going uninsured is enforced hard: the penalty is twice the premium you avoided or $750, whichever is greater, plus up to $100 a day for up to seven days in some cases, the state can order your business closed until you comply, and you are personally liable for the injured worker's benefits.

There is no general opt-out. A closely held corporation with no more than 10 stockholders and 2 corporate officers and no other employees may file a Corporate Officer Option Notice to stay outside the Act; add a third officer or any other employee and that option disappears. The only other alternative to buying a policy is self-insurance, which requires the department's permission and proof of very sound finances, so it is out of reach for a small business.

How quickly must you report a new hire in Wisconsin?

Within 20 days after the employee is hired, rehired, or returns to work. Reports go to the Wisconsin Department of Workforce Development, Wisconsin New Hire Reporting Center.

Every Wisconsin employer with a federal employer identification number reports each new hire within 20 days, and the same duty covers anyone rehired, recalled or returning after an unpaid gap of more than 60 days, including a worker who stayed on the payroll through the gap. Employees are reported even if they work one day and quit. If you report electronically you have a second constraint that is easy to miss: transmissions must go in twice a month, no more than sixteen days apart. Wisconsin will accept a Form WT-4 as the report, or a federal W-4 if you add the date of birth and date of hire, which is the cheapest way for a small employer to comply. Penalties under Wis. Stat. 103.05 are modest but real, up to $25 per unreported employee and up to $500 where employer and employee acted together to avoid reporting, and the department must give you notice and a chance to correct first.

Does Wisconsin have paid family leave or state disability insurance?

No. Wisconsin runs no state paid family leave fund and no state disability insurance, so there is no payroll deduction of that kind and no extra account to open.

Wisconsin runs no state disability insurance fund and no paid family or medical leave fund, so there is no payroll deduction and nothing to register for. What exists is the Wisconsin Family and Medical Leave Act, which is unpaid job-protected leave, not an insurance programme. It reaches employers with at least 50 permanent employees during at least 6 of the last 12 months, and only employees with 52 consecutive weeks of service and 1,000 hours in the preceding 52 weeks qualify. Entitlements are two weeks for the employee's own serious health condition, two weeks for a parent, child or spouse, and six weeks for the birth or adoption of a child, and the employee may substitute accrued paid leave. It runs alongside the federal FMLA rather than instead of it. Note the unusually short complaint window: 30 days from the action.

Do you need a sales tax permit in Wisconsin?

Which document you need depends on where you are. A seller's permit is for a business with a Wisconsin sales location making retail sales. An out-of-state retailer with no Wisconsin location that has to collect gets a use tax certificate instead, and a business that only buys taxable goods for its own Wisconsin use gets a consumer's use tax certificate. All of them are applied for on the same Business Tax Registration, and the $20 stored here is that BTR fee, which covers two years and every permit or certificate on the registration, including your withholding account, with a $10 renewal after that. So the fee is not per permit, and if you already registered to withhold you have already paid it. Buying an existing business does not transfer the permit, you apply fresh. You must display a seller's permit at your place of business. Remote sellers also collect the county and city sales taxes and, in some industries, the premier resort area taxes, so registering does not leave you with a single flat rate.

Security deposits. Revenue may require a security deposit of up to $15,000 before or after issuing the permit, and may refuse to issue or may revoke the permit if you do not post it. It is usually requested where the applicant has a history of delinquent tax. Any deposit comes back after 24 consecutive months of compliance. See Wis. Adm. Code sec. Tax 11.925.

Does a marketplace like Amazon or Etsy handle the tax for you?

Since January 1, 2020 under 2019 Wis. Act 10 a marketplace provider must collect and remit Wisconsin tax on every taxable sale it facilitates for you, and once it does you are not subject to audit or held liable on those transactions. Two catches. First, facilitated sales still count toward your own $100,000 small seller test, so a marketplace can push you over the threshold for the sales you make elsewhere without you ever registering for the marketplace ones. Second, the relief is not absolute: a provider that got the tax wrong can push liability back to you where it shows the department the error came from insufficient or incorrect information you supplied, unless you and the provider are related. A seller may also apply for a waiver under sec. 77.52(3m)(b) to collect the tax itself instead of the marketplace. If every Wisconsin sale you make runs through a collecting marketplace you need no permit of your own, but any direct sale changes that.

If your sales drop, when can you stop collecting?

Wisconsin's test looks at the previous or the current calendar year, so a year over $100,000 obliges you for the rest of that year and for all of the next one, and only after a full quiet calendar year can you stop. Even then it does not stop by itself. Revenue's own worked example is explicit: a seller that exceeded the threshold in 2017 and fell to $68,000 in 2018 may inactivate its certificate effective January 1, 2019, and is required to keep collecting Wisconsin tax in 2019 if it does not inactivate. So the obligation follows the registration, not the sales, and the businesses that get assessed are the ones that quietly stopped filing without closing the account. Note also that the 200-transaction test was repealed on February 20, 2021 by 2021 Wis. Act 1, and the test moved to a calendar year, so a high-volume low-value seller that registered under the old rule may be free to deregister and not realise it.

Does Wisconsin charge a tax on revenue rather than profit?

Wisconsin has no Washington-style tax on receipts, so most expanding businesses owe nothing here, but the economic development surcharge is worth knowing because gross receipts are what switch it on. It applies only to corporations, tax-option S corporations, insurers and exempt organisations taxable as corporations that have $4,000,000 or more of gross receipts from all activities. Since taxable years beginning on or after January 1, 2013, individuals, estates, trusts, partnerships and LLCs taxed as partnerships are not subject to it at all, which exempts most small businesses expanding into Wisconsin by structure alone. The base is your Wisconsin gross tax liability or net income, not receipts, so a corporation with $10 million of Wisconsin sales and no profit owes the $25 minimum rather than a percentage of sales. In a combined group the $4,000,000 test is applied to each member separately. Gross receipts for the test is a broad figure that includes dividends, interest, rents, royalties and the gross sales price of assets sold, not just sales revenue.

Do you have to register your out-of-state company in Wisconsin?

A foreign LLC files Form 521 for a flat $100. A foreign for-profit corporation files Form 21 and the fee is not flat, which is why no figure is stored: it is $100 plus $3 for each $1,000, or part of $1,000, of the corporation's estimated capital represented in Wisconsin above $60,000, computed on the worksheet in item 14 of the form. A corporation with under $60,000 of Wisconsin capital pays exactly $100, so treat $100 as the floor and run the worksheet before you send a cheque. Optional expedited service is a further $100 on either form. A foreign corporation must also attach a certificate of status from its home state issued within the previous 60 days, and no such certificate is required for the LLC.

Registering with the Department of Financial Institutions is separate from registering for tax, and hiring one Wisconsin employee will normally amount to transacting business. Wisconsin will not tell you whether it does: the department says plainly that its role is ministerial, that it will not give a legal opinion on whether your activities count, and that you should ask your own counsel. The statutory lists of things that do not count are in ss. 180.1501 for corporations and 183.0905 for LLCs. Registering late is where the money is. Both forms carry a supplement that charges you the $65 annual report fee for every year you operated unregistered, plus a penalty of 50% of the amount owed or $5,000, whichever is less; a corporation also pays $3 per $1,000 on any drop in its Wisconsin capital since then. Until you register you cannot maintain an action or proceeding in a Wisconsin court, though your contracts stay valid, your title to property is unaffected, and you can still defend a suit brought against you.

Where these figures come from

Every number on this page was read on Wisconsin's own agency pages, its statute, or a current-year official form, and this record was last reviewed on 2026-09-08. Where a state's explainer page disagreed with its statute or its current form, we followed the statute or the form and said so in the relevant section, because a state's consumer-facing pages are often the last thing updated when a figure changes.

Anything we could not confirm on a primary source is left blank rather than estimated. A missing figure on this page means we could not verify it, not that it is zero.

This is general information, not legal or tax advice. Rules change and your circumstances matter. Confirm anything you are about to act on with the agency named beside it.