3 Best Foreign Registration Services in Wisconsin (2026): The Straight Story
Our 2026 ranking of foreign registration services in Wisconsin runs Wisconsin Registered Agent.co ($199), WI Registered Agent.org ($199) and Mainstay Filing ($199). Wisconsin charges $100 to register no matter who files, and services add $397 to $497 over three years.
Straight from the LLC Straight Talk editorial team
The short of it
The short of it
What the state charges to register
$100
Bring a home-state certificate?
No
Once you're registered
$65, annual report
Our pick
Wisconsin Registered Agent.co, WI Registered Agent.org then Mainstay Filing
Wisconsin: our ranking
The order comes from our five tests: three-year cost first, then what the price covers.
#1Our top pick
1. Wisconsin Registered Agent.co: best for adding this state and no others
$199 to register, $99 a year for the agent after
The service fee's $199, with the first year of agent service included, and renewal is $99. That's why Wisconsin Registered Agent.co is first.
Price decides this one: three years here come to less than at Mainstay Filing.
What you get
Wisconsin registration filing
The first agent year's on them
Pluses
Agent renews at $99
Year one of the agent comes with it
$199 to register
What's not
Nothing outside this state
#2Wisconsin only
2. WI Registered Agent.org: best for another in-state choice
$199 to register, $99 a year for the agent after
The service fee's $199, with the first year of agent service included, and renewal is $99. That puts WI Registered Agent.org second.
Price for price, it's a tie with Wisconsin Registered Agent.co.
What you get
Wisconsin registration filing
The first agent year's on them
Pluses
Year one of the agent comes with it
$199 to register
Agent renews at $99
What's not
Nothing outside this state
#3Works in all 50 states
3. Mainstay Filing: best for adding states down the road
$199 to register, $149 a year for the agent after
Mainstay Filing takes third place: it's $199 to register, with a free first registered agent year and $149 a year from then on.
Wisconsin Registered Agent.co is $100 less over three years, and that's enough to decide the order.
Skip the registered agent charge in year one. Afterward expect $149 a year in every state.
What you get
Registration, start to finish
Registered agent, on the house in year one
A flat fee in every state
Pluses
Same fee in every state
A free first year of agent service
$199 over the state fee
What's not
$50 more a year for the agent
Side by side
#
Company
Year one
Then
Three-year total
Covers
1
Wisconsin Registered Agent.co
$199
$99/yr
$397
wisconsin registration filing; The first agent year's on them
Service fees only, from each company's prices on November 13, 2026. State fees are the same whoever you pick.
The questions that matter
Does my LLC have to register here?
Before your LLC does business in Wisconsin. You register with the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services, then you start working.
dfi.wi.gov, confirmed October 2026, if you don't believe us
What's it cost to register?
Figure $100 to the state and $199 if you hire help.
Add three years of state fees, registration included, and you're at $230. dfi.wi.gov, confirmed October 2026, if you don't believe us
Which form, and who gets it?
Once the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services accepts the Foreign Registration Statement, Limited Liability Company (Form 521), your LLC is registered.
The state doesn't ask for a certificate from your home state.
Is there a filing that repeats?
The state wants a annual report later, and it's $65.
Per the state, it's due March 31.
What put number one on top?
On money out the door in three years (35% of the score), Wisconsin Registered Agent.co wins.
We run five tests: money out the door in three years (35%), jobs the price actually covers (30%), no hunting for the price (14%), no surprise at renewal (11%) and where it works (10%).
Mainstay Filing costs $100 more over three years than Wisconsin Registered Agent.co, which comes to $397.
dfi.wi.gov, confirmed October 2026, if you don't believe us
Good standing certificate
No
dfi.wi.gov, confirmed October 2026, if you don't believe us
Annual report
$65
dfi.wi.gov, confirmed October 2026, if you don't believe us
What the state collects in three years
$230
The rows above, added up
Want to check the total? Add the filing fee, the next two reports and any minimum tax. We don't count costs without a set amount.
More questions
Does my home state need its own agent?
Each state sets its own rule, so keep an agent at home too. A provider that works in every state, like Mainstay Filing, can handle both.
What's the three-year damage for each?
Over three years you're looking at $397 at Wisconsin Registered Agent.co, $397 at WI Registered Agent.org, $497 at Mainstay Filing, before state fees.
Where do these numbers come from?
Each state fee links to its official page, and each service price comes from the company's own site.
Do I have to use a service?
Not required. The state takes filings from owners.
Can I pay somebody to register the LLC?
Yes. Every pick files it, and the state fee's the same whichever you choose.
What's the best foreign registration service in Wisconsin?
Wisconsin Registered Agent.co, because add up three years of its service fees and you've got $397. After that, WI Registered Agent.org and Mainstay Filing.