How to Start a Business in Wisconsin
Everything you need to form your Wisconsin LLC, corporation, or sole proprietorship, with exact fees and step-by-step instructions.
A Wisconsin LLC begins with Articles of Organization (Form 502), filed with the Department of Financial Institutions rather than the Secretary of State. DFI's fee schedule lists $130 online and $170 on paper. After that, the recurring state paperwork is a domestic LLC annual report, $25 online or $40 on paper, due in the calendar quarter that contains your formation anniversary.
DFI describes itself as a filing registry, so a filed LLC is not the same as a licensed business. Tax registration runs through the Department of Revenue, trade licensing through the Department of Safety and Professional Services, and city or county permits through your local clerk. This guide is for people starting a small business anywhere from a Milwaukee storefront to a Door County rental, and it takes the state filings first, then points you to the trade and local pages.
Wisconsin Economy and Top Industries
The Census Bureau's July 1, 2024 estimate put Wisconsin's population at 5,960,975. Industries commonly associated with Wisconsin's economy include manufacturing in machinery, fabricated metals, food processing and paper products, along with agriculture and dairy, health care and biosciences, insurance and financial services, and tourism and outdoor recreation.
Several of those industries have a dedicated guide here. Food and farm owners can read the cheese business, farm business, ginseng, meat processing, brewery and winery or distillery guides, and the general manufacturing guide covers production. Care providers have the home care agency, assisted living and daycare guides, and the insurance agency guide covers the financial side.
Visitor-driven businesses are covered too. The campground, bed and breakfast, event venue and fishing or hunting guide pages sit alongside short-term rental guides for Door County, Madison, Milwaukee and Wisconsin Dells.
Choosing Your Wisconsin Business Structure
A Wisconsin LLC does not pay a separate entity-level franchise tax on DOR's rate pages we read, but DOR's corporation FAQ says a corporation pays a 7.9% franchise or income tax, and an LLC that elects corporate treatment can fall under it. Confirm your LLC's treatment with DOR.
| Entity Type | Liability Protection | Taxation | Wisconsin Filing Fee | Annual Cost | Best For |
|---|---|---|---|---|---|
| LLC | Yes | Pass-through | $130 | $25 (annual report, online) | Most small businesses |
| Corporation | Yes | Double (C-Corp) or pass-through (S-Corp) | $100 | $25 (annual report, online) | Raising investment, stock options |
| Sole Proprietorship | No | Pass-through | $0 | $0 | Freelancers, side hustles |
| Partnership | No | Pass-through | $0 | $0 | 2+ owners (consider an LLC instead) |
8 Steps to Start Your Wisconsin Business
- 1
Choose your business structure
Wisconsin LLCs are formed under chapter 183 and corporations under chapter 180, both filed with DFI. DOR's pass-through guidance says a tax-option (S) corporation, or an LLC taxed as one, may elect to pay tax at the entity level, so ask a tax professional before you pick a structure.
- 2
Pick and reserve your business name
Search DFI's Business Entity Search (CRIS), where DFI's FAQ says no name is available until a filing is accepted. DFI's Form 1 reserves an LLC or corporation name for $15 for 120 days, with optional expedited service for $100.
- 3
Appoint a registered agent
Wisconsin's Form 502 page states that an entity may not name itself as its own registered agent, and that the registered office must be a physical street address, not solely a P.O. box, mailbox service or telephone answering service. Under Wis. Stat. 183.0115 an individual can serve as agent if they live in Wisconsin and the registered office is their business office, or you can hire a registered agent service. A statement of change of agent or office costs $10 online or $25 on paper on DFI's fee schedule.
- 4
File your formation documents
File Articles of Organization (Form 502) for an LLC at $130 online or $170 on paper, or Articles of Incorporation (Form 2) for a stock corporation at $100. DFI's fee schedule lists next-business-day expedite for $100, or counter service in Madison within four hours for $250 or within one hour for $500.
- 5
Get your EIN from the IRS
Free and online; the IRS says its online tool issues the number in minutes. Do not pay anyone for this.
- 6
Register for a sales tax permit if you sell goods
Register with the Department of Revenue through Business Tax Registration. DOR's FAQ gives $20 for the initial two-year registration and $10 for each renewal, and DOR's new business page says a business already registered with DFI, or a sole proprietorship, registers with DOR directly.
- 7
Get required licenses and permits
Trade credentials come from DSPS, and DSPS's credentialing FAQ does not describe a general business license. Cities and counties add their own licenses, so check the clerk for your municipality, such as Milwaukee, Madison or Green Bay.
- 8
Register for Wisconsin taxes
Wisconsin's individual rates run 3.50% to 7.65% for tax year 2026, according to DOR's Form 1-ES instructions. For single filers the 2026 schedule shows 3.50% up to $15,110, 4.4% to $51,950, 5.3% to $332,720 and 7.65% above that. DOR's corporation FAQ gives 7.9% for a franchise or income tax, only one of which is imposed in a year. Employers also register for unemployment insurance with DWD, and the One Stop portal can file DFI, DOR and DWD registration in one application for an eligible LLC or corporation.
What Is Different About Starting a Business in Wisconsin
Business entities are filed with DFI, not the Secretary of State, and DFI's own general information page says it is a filing registry that lacks authority to certify that a business operates legally. An accepted filing therefore does not, by itself, show that your business is licensed or approved to operate.
Annual reports follow your anniversary quarter instead of one statewide date. DFI's FAQ gives March 31, June 30, September 30 or December 31 depending on when you formed, and DFI's administrative dissolution page says entities that stop filing are noticed and then dissolved 60 days after the notice is published. The same page says there are no late fees or penalties and tells owners to contact DFI for reinstatement forms.
Sales tax is layered. DOR's rate page, read in an October 2026 archived copy, lists the 5% state rate, a county tax in 70 of the 72 counties (0.5% in 69 of them and 0.9% in Milwaukee County, with Waukesha and Winnebago having none), and a 2% City of Milwaukee tax that is the only city sales tax on its list. DOR's county and city tax page also lists a premier resort area tax of 0.5% or 1.25% in some places.
A new employer's unemployment insurance rate depends on your industry and payroll. DWD's tax rate page, read November 10, 2026, lists 2.50% for new construction employers and 3.05% for other new employers with payroll under $500,000, for both 2026 and 2027, on a taxable wage base of $14,000.
Student entrepreneurs have a route of their own. The One Stop Business Portal's New Start page says student entrepreneur LLCs file on paper to receive the fee waiver, and that an LLC filed online pays the $130 fee.
On general licensing, DFI, DOR, One Stop, DSPS and SBDC pages we read describe no single statewide business license, though none of them states that Wisconsin issues none. Confirm with the agency that regulates your trade and with your city.
How Much Does It Cost to Start a Business in Wisconsin?
The cost people miss is the paper surcharge: DFI's fee schedule lists $170 for paper LLC articles against $130 online, and $40 against $25 for the annual report. The other line to budget is the DOR seller's permit, $20 for the first two years.
| Item | Cost | Notes |
|---|---|---|
| LLC filing fee (Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services (business entities are filed with DFI, not the Wisconsin Secretary of State)) Required | $130 | A filed document is effective on the date DFI receives it unless it names a later date (Wis. Stat. 183.0207). |
| Corporation filing fee Required | $100 | If forming a corporation instead |
| Limited Liability Company Annual Report... Required | $25 | Due each year starting the year after you form, in the calendar quarter that contains your anniversary date; $40 on paper |
| Name reservation | $15 | 120 days |
| Registered agent service | Varies | Set by the provider; no service is needed if an eligible person serves as your agent |
| EIN (IRS) Required | $0 | Always free |
| Business license | Varies | We found no single statewide license in the DFI, DOR, One Stop, DSPS and SBDC pages we read; confirm with your agency and city |
| Operating agreement | Varies | Chapter 183 does not require one (Wis. Stat. 183.0201(2)); the cost depends on who drafts it |
| Required state cost, LLC year 1 | $130 | Filed online with no extras; the annual report is not due in year one |
Start a Specific Business in Wisconsin
Wisconsin Business Guides
Formation and Entity Types
- Apply for LLC in Wisconsin
- Articles of Incorporation Wisconsin Sample
- Apply for Sole Proprietorship Online in Wisconsin?
- How to Start an S Corp in Wisconsin
- Wisconsin Foreign Corporation Registration and Foreign LLC
- How to Start a Nonprofit in Wisconsin
- How to Dissolve an LLC in Wisconsin and Close Tax Accounts
- Wisconsin LLC Operating Agreement
- WI DFI (WDFI)
- WI DFI (WDFI)
- Wisconsin Business Registration
Licenses, Permits and Registrations
- Wisconsin Business License
- Wisconsin Annual Report
- Wisconsin Contractor License
- Wisconsin DBA
- Wisconsin Business Name Search
- How to Get an EIN in Wisconsin
- Apply for a Resale Certificate in Wisconsin
- Wisconsin Home-Based Business Laws
- Wisconsin Certificate of Good Standing
- Wisconsin VendorNet
- DATCP Licenses in Wisconsin
- Starting a Business in a Town in Wisconsin
- DATCP Licenses in Wisconsin
- Starting a Business in a Town in Wisconsin
- Bartending License Wisconsin
- Wisconsin Liquor License
- DSPS License in Wisconsin
Taxes and Compliance
- Wisconsin Business Taxes Explained for New Owners
- Wisconsin Workers Compensation
- Wisconsin Corporate Income Tax
- Wisconsin Sales Tax by County
- Wisconsin Sales Tax for Businesses
- Wisconsin Seller's Permit
- Wisconsin Labor Laws and Hiring Rules for New Employers
- Wisconsin Premier Resort Area Tax and Room Tax
- Wisconsin Premier Resort Area Tax and Room Tax
- Wisconsin Minimum Wage in 2026
- Wisconsin Income Tax Rates for Business Owners in 2026
Costs, Money and Services
- Business License Cost in Wisconsin and Startup Fees
- Best LLC Service in Wisconsin
- Best Registered Agent Wisconsin
- Wisconsin Business Insurance
- Wisconsin Small Business Grants, Loans and Free Help
- Wisconsin LLC Cost in 2026
County Business Licensing
Why Start a Business in Wisconsin?
- Forming an LLC costs $130 filed online with the Department of Financial Institutions, or $170 on paper.
- The recurring state filing for an LLC is the annual report: $25 online, $40 on paper.
- State sales tax is 5%. County tax adds 0.5% in 69 of the 72 counties and 0.9% in Milwaukee County; Waukesha and Winnebago counties have none.
- Corporations pay a flat 7.9% franchise or income tax; pass-through owners pay graduated individual rates of 3.50% to 7.65%.
- A document DFI files is effective on the date DFI receives it unless it names a later date (Wis. Stat. 183.0207). Optional expedited service costs $100 and is acted on by close of business the next business day.
Wisconsin Business Resources
Frequently Asked Questions
- How much does it cost to form an LLC in Wisconsin?
- DFI's fee schedule lists $130 for Articles of Organization filed online and $170 on paper. A $15 name reservation and a $100 expedite are optional.
- When is my Wisconsin LLC annual report due?
- DFI's FAQ says domestic reports are due in the calendar quarter of your formation anniversary, so the deadline is March 31, June 30, September 30 or December 31, starting the year after you form. The fee is $25 online or $40 on paper.
- Why do I file with DFI and not the Secretary of State?
- Wisconsin business entities are filed with the Department of Financial Institutions, which describes itself as a filing registry. The Secretary of State is not the filing office for LLCs or corporations.
- Is there a fee waiver for student entrepreneurs?
- The One Stop Business Portal says student entrepreneur LLCs file on paper to receive the waiver, and that online filing pays the $130 fee. Check DFI's Form 502 instructions for the qualifying definition.
- Do I need to register a trade name in Wisconsin?
- DFI's trademark page says registration of a name is not required. Registration costs $15 and lasts 10 years, and DFI accepts trade name filings only online or in person.
- How do I get a Wisconsin seller's permit?
- Register through the Department of Revenue's Business Tax Registration. DOR's FAQ lists $20 for the initial two years and $10 per renewal.
- Which Wisconsin sales tax rate do I charge?
- DOR's rate page lists the 5% state tax plus a 0.5% county tax in 69 counties and 0.9% in Milwaukee County, with none in Waukesha or Winnebago, plus 2% in the City of Milwaukee. Premier resort area tax of 0.5% or 1.25% may also apply, so confirm the rate for your location with DOR.
- Can I use a mailbox address as my Wisconsin registered agent address?
- DFI's Form 502 says the registered office must be an actual physical street location, not solely a P.O. box, mailbox service or telephone answering service. An entity also may not name itself as its own registered agent.
- Does Wisconsin have a general business license?
- The DFI, DOR, One Stop, DSPS and SBDC pages we read describe no single statewide business license, though none states that Wisconsin issues none. Trades are licensed by DSPS and cities add their own permits, so confirm with the agency for your trade.
- What unemployment insurance rate will a new Wisconsin employer pay?
- DWD's tax rate page, read November 10, 2026, lists 2.50% for new construction employers and 3.05% for other new employers with payroll under $500,000, for 2026 and 2027, on a $14,000 wage base. Check DWD for the rate that applies to your payroll.
- How long does it take to form an LLC in Wisconsin?
- We found no standard DFI processing time on the pages we read. Under Wis. Stat. 183.0207 a document DFI files is effective on the date DFI receives it unless it names a later date, and under 183.0210(3) DFI must return or give notice of a refused document within 5 business days, which is a refusal deadline and not a processing time. Optional expedited service costs $100 and is acted on by close of business the next business day.
- Can a non-resident form a Wisconsin LLC?
- We found no residency requirement for LLC members in Wis. Stat. ch. 183 (Wayback copy of October 22, 2026), but the registered agent must be a Wisconsin resident or an entity with a Wisconsin business office, and the registered office must be a physical Wisconsin street address. Confirm with DFI before you file.
- Is an operating agreement required for an LLC in Wisconsin?
- No. Chapter 183 does not require one (Wis. Stat. 183.0201(2)), and DFI does not file one, though an LLC is manager-managed only if a written operating agreement says so. See our operating agreement guide.