Wisconsin Foreign LLCs (2026): Registration Fees and the 3 Best Services
Wisconsin in 2026, foreign LLC registration: we rank Mainstay Filing ($199), WI Registered Agent.org ($199) and Wisconsin Registered Agent.co ($199) in that order. A foreign LLC pays Wisconsin $100 up front and $65 per yearly report; 20th of 50 over three years.
The Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services takes the Foreign Registration Statement, Limited Liability Company (Form 521) and a $100 fee from foreign LLCs.
Each cycle comes the annual report ($65), March 31.
Before you file
Name and formation date as they appear on the home-state record.
A registered agent based in the state, supplied by every service on this page.
The $100 filing fee.
The price of not registering
Its agreements remain enforceable (Wis. Stat. 183.0902(3)).
Why Mainstay Filing is listed first
Of the five criteria, requirements covered (28%) is where Mainstay Filing pulled ahead of WI Registered Agent.org in Wisconsin.
Because a foreign LLC lives in two states, coverage decided the order.
Common questions
What does a foreign LLC pay to register in Wisconsin?
$100 at the state office. The picks add $199.
What is the foreign registration form in Wisconsin?
Foreign Registration Statement, Limited Liability Company (Form 521), filed with the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services.
What does a foreign LLC owe each year?
It files the annual report for $65.
What happens if the LLC operates there unregistered?
Its agreements remain enforceable (Wis. Stat. 183.0902(3)).
Does a foreign LLC need a registered agent in Wisconsin?
Every LLC must name a registered agent with an in-state street address.
Who should handle the registration?
Mainstay Filing first, because $199 plus Wisconsin's own fee, then $149 a year for the agent from year two. After it: WI Registered Agent.org and Wisconsin Registered Agent.co.