Learn the steps to form an LLC in Wisconsin – from choosing your name to filing your Articles of Organization. $1 + $130 state fee. Start today.
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Filing fee: $130 online (Articles of Organization); $170 on paper
Processing time: Effectively immediate online; about 5 business days plus mail time on paper ($25 next-day expedite available)
State agency: Wisconsin Department of Financial Institutions — DFI, not a Secretary of State (dfi.wi.gov / One Stop portal)
Annual report due: The last day of the calendar quarter containing your formation anniversary — $25 online. A year past due, dissolution proceedings begin.
State tax rate: Graduated income tax of 3.5-7.65% on pass-through income (the middle 4.4% bracket was widened in 2025) and 5% state sales tax — 5.5% in most counties, 7.9% inside the City of Milwaukee
Start your U.S. business journey today. Form your company with confidence and let Brio handle the paperwork.
Forming an LLC in Wisconsin takes 5 steps: choose and check your business name, appoint a Registered Agent with a physical Wisconsin address, file Articles of Organization online with the Department of Financial Institutions, draft an operating agreement, and get an Employer Identification Number (EIN) from the IRS. The state filing fee is $130 online.
Wisconsin makes the mechanics easy: online formation through the DFI is effectively instant, the annual report is a modest $25, there’s no franchise tax or entity-level tax on LLCs, and the One Stop portal can handle your tax registrations in the same flow as formation. The 2025 budget also widened the middle 4.4% income tax bracket substantially, cutting the bill for a broad band of middle-income owners. An LLC gives you personal liability protection and pass-through taxation without the administrative overhead of a corporation.
Wisconsin also modernized its LLC law wholesale: since January 2023, all Wisconsin LLCs are governed by the new Uniform Limited Liability Company Law, so operating agreements drafted from older boilerplate may no longer match the default rules on management authority and fiduciary duties — worth a review if you’re reusing a template. One administrative quirk to note now: the annual report deadline is tied to the end of your formation anniversary’s calendar quarter, not the anniversary date itself.
Unlike some states, Wisconsin doesn’t require you to reserve your name before filing — you simply claim it when you file your Articles of Organization. If you’re not ready to file yet, you can reserve a name for $15, which holds it for 120 days and is renewable once.
Your LLC name must be distinguishable upon the Department of Financial Institutions’ records from every registered and reserved entity name, and must include a designator like “Limited Liability Company,” “Limited Company,” “LLC,” “L.L.C.,” “LC,” or “L.C.” Check the DFI’s corporate records search before you file to avoid a rejection.
Every Wisconsin LLC must have a registered agent — a person or entity designated to receive legal notices and government documents on behalf of the business at its registered office. The agent must be a Wisconsin resident or an entity with a Wisconsin business office, with a street address (not just a P.O. box) and an email address on file, available during regular business hours. The LLC can’t serve as its own agent, though a Wisconsin-resident member can.
You can serve as your own registered agent if you have a physical Wisconsin address and can be there during business hours. Many business owners use a professional registered agent service instead — it keeps your personal address off public records and ensures someone is always available to receive documents.
The Articles of Organization is the document that legally creates your Wisconsin LLC. You file it with the Department of Financial Institutions — Wisconsin has no Secretary of State for business filings, a detail that trips up out-of-state founders hunting for the wrong website. Online filing costs $130 and is accepted essentially immediately; paper (Form 502) costs $170 and takes about 5 business days plus mail time, with a $25 next-business-day expedite if you must use it.
The Articles must include your LLC’s name, your registered agent’s name, Wisconsin street address, and email, the principal office, its management structure, and the organizer’s signature. Using the One Stop portal at onestop.wi.gov lets you complete formation and Department of Revenue tax registrations in a single workflow.
Wisconsin doesn’t require you to file an operating agreement with the state, but you should have one — and here it deserves fresh drafting rather than an old template: Wisconsin replaced its LLC statute with the RULLCA-based Uniform Limited Liability Company Law effective 2023, changing default rules on management authority, apparent authority, and fiduciary duties. Your agreement defines who owns what, how profits are distributed, and how decisions get made.
Your operating agreement should specify whether the LLC is member-managed or manager-managed. In a member-managed LLC, all owners share day-to-day authority. In a manager-managed LLC, a designated manager handles operations while other members retain economic rights. A written agreement is the version that holds up when disputes arise.
An Employer Identification Number (EIN) is a 9-digit federal tax ID issued by the IRS. Your Wisconsin LLC needs one to open a business bank account, hire employees, and file federal taxes. Applying online at irs.gov is free and issues your EIN immediately after you complete the application.
To use the IRS online application, the responsible party must have a valid Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN), and the business must have its principal place of business in the United States. The IRS does not charge a fee for issuing an EIN.
Wisconsin LLCs file one report with the DFI each year: a $25 annual report (online) due by the last day of the calendar quarter containing your formation anniversary — March 31, June 30, September 30, or December 31 — with the filing window opening at the start of that quarter and a notice sent beforehand. There’s no immediate late fine, but once a report is a full year past due the DFI can begin administrative dissolution, giving 60 days to cure; reinstatement afterward costs $100 plus every missed report.
Wisconsin has no general state business license — the One Stop portal flags any occupation-specific licenses that apply. Sellers of taxable goods or services need a seller’s permit through Business Tax Registration: $20 initially, covering two years, then $10 per two-year renewal. Collect 5% state sales tax plus the 0.5% county tax most counties add — and mind Milwaukee, where combined rates jumped in 2024 to 7.9% inside the city and 5.9% elsewhere in the county.
The required Wisconsin state fee is $130 to file the Articles of Organization online — $170 on paper, so there’s no reason not to file electronically. The annual report is $25 online, name reservation is optional at $15, and the seller’s permit (if you need one) is $20 for two years. There’s no additional state fee to get your EIN; the IRS issues EINs for free.
Yes. Wisconsin allows a single person to form and own an LLC – this is called a single-member LLC. You can complete the Articles of Organization yourself online through the DFI or the One Stop portal without an attorney, with the filing accepted essentially on submission. You’ll still need a registered agent with a physical Wisconsin address, but that can be yourself if you’re a Wisconsin resident.
No. Wisconsin charges a $130 Articles of Organization fee online – that’s a required state fee you can’t avoid. What you can avoid is paying extra for formation help. We handle your Wisconsin LLC filing for $1; you only pay the required state fees.
Yes – $25 filed online, due by the last day of the calendar quarter that contains your formation anniversary (March 31, June 30, September 30, or December 31), a quarter-based rule almost no other state uses. There’s no instant late fee, but a report a year overdue triggers administrative dissolution proceedings with a 60-day cure notice. Reinstatement runs $100 plus all the back reports — cheap enough, but far cheaper to just file when the DFI’s reminder arrives.
Yes, every Wisconsin LLC is required to have a registered agent. A registered agent is a person or entity that receives legal notices and official government documents on behalf of your LLC at its registered office. The agent must be a Wisconsin resident or an entity with a Wisconsin business office, with a street address — not just a P.O. box — plus an email on file, and be available during regular business hours. You can serve as your own registered agent or use a professional service.
The mistakes that come up most often are hunting for a “Wisconsin Secretary of State” filing site — business filings go through the Department of Financial Institutions — and misreading the annual report deadline as the anniversary date when it’s actually the end of the anniversary quarter. Others include paying $170 for paper filing when online is $130 and instant, skipping the separate $20 seller’s permit before making taxable sales, reusing pre-2023 operating agreement boilerplate that conflicts with the new LLC law’s defaults, and charging 5.5% sales tax in the City of Milwaukee where the combined rate has been 7.9% since 2024.
Essentially instantly, if you file online — the DFI accepts online Articles of Organization upon submission with immediate confirmation. Paper filings take about 5 business days of processing plus mail transit, with a $25 next-business-day expedite available. Online is cheaper, faster, and confirmation arrives while you’re still at your desk — there’s no reason to file any other way.
Thinking about another state? Compare Wyoming, Delaware, Texas and Florida — or browse all 50 state guides.
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