LLC Review Desk's 2026 picks for LLC services in Wisconsin, favorite first, are Mainstay Filing ($199), WI Registered Agent.org ($199) and Wisconsin Registered Agent.co ($199). Mainstay Filing is our favorite, because $199 a year covers the Wisconsin formation, a year as your registered agent and the annual report, and it renews at $199.
By the LLC Review Desk editorial team
Position 1
Our top pick
1. Mainstay Filing: best for formation, agent and annual report in one simple price
$199 a year, and the state fee goes on top ($329 at checkout)
Our score
9.1out of 10
9.1 out of 10
Our favorite is Mainstay Filing, because for one yearly price of $199 you get the Wisconsin filing, registered agent service and the annual report, then $199 at renewal.
When your plan renews, Mainstay files the annual report for you. Wisconsin charges $25 every year for it, and the date is end of the calendar quarter containing the LLC's anniversary date, and a late one costs $25 more. Mainstay passes the state's fee along at cost.
Over three years it costs $200 more than WI Registered Agent.org, and for us the extra things it handles are worth that.
In the price
Formation paperwork prepared and sent in
A full year as your registered agent
Your annual report, prepared and filed for you
Your EIN application, taken care of
What we like
Wisconsin's fee is passed through at cost
One yearly price of $199 that includes the annual report
Renews at $199, no add-ons
The EIN application is included
Trade-offs
After year one, its agent costs $100 a year more than WI Registered Agent.org's
Every score out of 10 is our editors' call, made with the weighted criteria on How we rank, not a customer rating.
What Wisconsin LLC services cost in 2026: year one, renewals and three years
Service
First year
Second year
Third year
Three-year total
Handles the annual report too
Mainstay Filing
$199
$199
$199
$597
Yes
WI Registered Agent.org
$199
$99
$99
$397
No
Wisconsin Registered Agent.co
$199
$99
$99
$397
No
We took each price from the company's own pages on November 12, 2026. On top of every row, Wisconsin charges a $130 filing fee, which isn't in these totals.
Why we put Mainstay Filing first
LLC Review Desk gives three-year cost 29% and filings in the price 29%, then divides 42% among renewal price, state fit and up-front totals. For Wisconsin, it came down to filings in the price.
In Wisconsin you'll need a report each year ($25 to the state), and sending it late adds $25. Mainstay's price includes that filing and WI Registered Agent.org's doesn't, which is why coverage beat WI Registered Agent.org's lower three-year cost.
You can read every criterion and weight on How we rank.
The Wisconsin LLC filing fee and form, from the state
Heads up: the Department of Financial Institutions (DFI) takes $130 when you file the Articles of Organization - Limited Liability Company (Form 502). Every service below adds that fee at cost.
What a Wisconsin LLC needs after it is formed
There's one recurring item: the annual report, every year, by end of the calendar quarter containing the LLC's anniversary date. The state asks for $25. A late filing adds $25. Every LLC must name a registered agent with an in-state street address.
Your questions about Wisconsin LLC services
How much does forming an LLC in Wisconsin set you back?
The state charges $130 to file, and services charge $199.
What paperwork makes the LLC official?
You send the Articles of Organization - Limited Liability Company (Form 502) to the Department of Financial Institutions (DFI).
Does the Wisconsin formation form ask me to name a registered agent?
Yes. You list a registered agent when you file and keep one on record, using a street address in Wisconsin.
Is there paperwork after the LLC is formed?
Yes, one item: the annual report. It comes every year, by end of the calendar quarter containing the LLC's anniversary date, and the state asks $25.
Is the EIN included in the price?
With Mainstay Filing, yes; it comes with the yearly price. WI Registered Agent.org and Wisconsin Registered Agent.co tack on $99 for it. You can also ask the IRS for an EIN yourself, free of charge.
Who should I use to form my Wisconsin LLC?
Mainstay Filing, because the Wisconsin formation, your registered agent and the annual report all come in a single $199 price.