3 Best Foreign Registration Services in Wisconsin (2026): Who to Hire
Who should you hire in Wisconsin for foreign registration services in 2026: we say Mainstay Filing ($199), Wisconsin Registered Agent.co ($199) and WI Registered Agent.org ($199), ranked best first. Each pick pays Wisconsin's $100; three years of service run $397 to $497.
By the LLC Answered editorial team
The brief reply
Short reply
Price to register
$100
Paper from the home state?
No certificate
Afterward
$65, annual report
Who to hire
Mainstay Filing, Wisconsin Registered Agent.co then WI Registered Agent.org
Hire these in Wisconsin
Order set by our five tests: three-year cost first, then what the price covers.
#1Number 1
1. Mainstay Filing: best for a second, third and fourth state
$199 plus the state fee; then $149 a year
Mainstay Filing comes first, as $199 on top of the state fee gets you registered, with the registered agent free in year one and $149 a year afterward.
Choosing Wisconsin Registered Agent.co saves $100 over three years, but only a Wisconsin company can use it.
After the free year, the registered agent renews at $149.
What is bundled
State registration handled
Registered agent, covered the first year
A nationwide flat fee
Pluses
Any state, one fee
$199 plus state fee
A free first year of agent service
Downsides
Agent renews at $149, $50 over Wisconsin Registered Agent.co
#2One-state pick
2. Wisconsin Registered Agent.co: best for a low yearly agent fee
$199 plus the state fee; then $99 a year
Wisconsin Registered Agent.co is number 2, because $199 above the state fee at the start, and $99 yearly after that.
What is bundled
Application sent for you
First-year agent
Pluses
$199 over the state fee
No agent charge for year one
$99 a year for the agent after
Downsides
Home state needs a separate agent
#3One-state pick
3. WI Registered Agent.org: best for one more state only
$199 plus the state fee; then $99 a year
WI Registered Agent.org is number 3, because $199 above the state fee at the start, and $99 yearly after that.
Price for price it ties Wisconsin Registered Agent.co.
What is bundled
Application sent for you
First-year agent
Pluses
$99 a year for the agent after
No agent charge for year one
$199 over the state fee
Downsides
Home state needs a separate agent
Compared in a table
#
Who
First year
Later years
3-year cost
Included
1
Mainstay Filing
$199
$149/yr
$497
state registration handled; registered agent, covered the first year; A nationwide flat fee
State fees reach $230 over three years, counting any recurring report. see dfi.wi.gov, as of October 2026, state page
What gets submitted?
The LLC is registered once the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services accepts the Foreign Registration Statement, Limited Liability Company (Form 521).
A home-state certificate is not requested.
Are there ongoing fees?
Each cycle brings another annual report, billed at $65.
Filings come due March 31.
Why is number one first?
Mainstay Filing leads on paperwork covered, a 29% test.
The two heavy tests are three-year price (36%) and paperwork covered (29%); three lighter tests follow.
Two states, one provider: that is why it is first.
Every figure above links to its official source; the last line is our own addition of the filing, two reports and any minimum tax, with variable costs such as publication left out.
Also asked
Does my home state still want an agent?
Yes. The home state keeps its own agent rule, and Mainstay Filing can serve both states from one account.