In 2026, we rank Mainstay Filing ($199), Wisconsin Registered Agent.co ($199) and WI Registered Agent.org ($199), in that order, as the LLC formation services for Wisconsin. Budget $130 for the state plus $397 to $597 in service fees over three years.
By the LLC Answered editorial team
The brief reply
Short reply
Charged by the state
$130, one payment
Recurring cost
$25 each twelve months
Registered agent
Yes, by law
Hire in this order
Mainstay Filing, Wisconsin Registered Agent.co then WI Registered Agent.org
1. Mainstay Filing: best for handing off the annual report
Annual price $199, renewal price $199; state fee extra
Mainstay Filing is our answer because $199 a year pays for forming the LLC, serving as its registered agent and filing the annual report, and it renews at $199.
Across three years it costs $200 above Wisconsin Registered Agent.co, and in exchange you hand off more filings.
It handles each annual report, adding the $25 the state sets and nothing more.
What is bundled
The LLC formation itself
Registered agent all year
Annual report looked after by Mainstay
EIN filed for you
State fees at cost
Pluses
One price, $199 a year
EIN step covered
$199 at renewal
Downsides
$100 a year more than Wisconsin Registered Agent.co from year two
#2One-state pick
2. Wisconsin Registered Agent.co: best for tight budgets
$199 plus the state fee; then $99 a year
Why Wisconsin Registered Agent.co second? Simply put, $199 gets the LLC formed, and the agent renews yearly at $99.
The price excludes the annual report.
What is bundled
Wisconsin formation filing
Agent for year one
Pluses
$199 to form
Then $99 yearly
First-year agent comes with it
Downsides
Filing the annual report stays on your to-do list
EIN help is $99 more
#3One-state pick
3. WI Registered Agent.org: best for a second in-state filer
$199 plus the state fee; then $99 a year
Why WI Registered Agent.org third? Simply put, $199 gets the LLC formed, and the agent renews yearly at $99.
The price excludes the annual report.
The same published prices as Wisconsin Registered Agent.co, so choose whichever you prefer.
What is bundled
Wisconsin formation filing
Agent for year one
Pluses
Then $99 yearly
First-year agent comes with it
$199 to form
Downsides
Filing the annual report stays on your to-do list
EIN help is $99 more
Prices side by side
#
Company
Year 1
Later years
3-year cost
Price buys
1
Mainstay Filing
$199
$199/yr
$597
The LLC formation itself; registered agent all year; Annual report looked after by Mainstay
Each company's listed prices, November 13, 2026. State fees come on top and do not vary by pick.
Questions and replies
What is the all-in cost to start one?
The state's share is $130. A service takes $199 more in the first year.
After three years, the state has charged $180 in total. source dfi.wi.gov (October 2026) on file
Who receives the LLC paperwork?
One document does it: the Articles of Organization - Limited Liability Company (Form 502), filed with the Department of Financial Institutions (DFI).
Where the law says so: Wis. Stat. § 183.0201. source dfi.wi.gov (October 2026) on file
Will the state insist on a registered agent?
Every LLC must name a registered agent with an in-state street address.
A Wisconsin resident, or a business entity formed in Wisconsin or authorized there, whose business office is the registered office. The agent needs an email address and has to consent.
Set aside $25 each year for the annual report. Mark the state's date, end of the calendar quarter containing the LLC's anniversary date, on your calendar.
You can do it yourself, and the three-year cost is then $180 in state fees.
That $397 to $597 over three years is the price of having someone else handle it.
Why is number one first?
Mainstay Filing is strongest on paperwork covered, which counts 29% in our ranking.
Five tests set the order: three-year price (36%), paperwork covered (29%), straightforward pricing (15%), renewal behavior (10%) and states served (10%).
Skipping the annual report is worth more to us than a few dollars, so the bundle leads.
The bottom line adds up the filing fee, the reports for years two and three and the minimum tax if there is one. A cost with no set price, like a newspaper notice, is left out of the sum.
Three-year costs are Mainstay Filing, $597; Wisconsin Registered Agent.co, $397; WI Registered Agent.org, $397 for the services alone.
What are your sources?
State side: Wisconsin's published fee schedules and forms. Service side: the prices each company lists.
Does the law require a service?
No. What you pay a service covers the labor and the agent role, not anything the state demands.
Who is your first choice in Wisconsin?
Mainstay Filing first: a single $199 yearly price includes the formation, the registered agent and every annual report. Wisconsin Registered Agent.co and WI Registered Agent.org follow.