Place1
Our top pick in WisconsinMainstay Filing
1. Mainstay Filing: best for one price in every state
$199 to register, $149 yearly after
Our mark9.1out of 10
We put Mainstay Filing first: one $199 service fee to register here or anywhere else, with year one of agent service included.
From year two the agent costs $149 a year, the same in every state.
It costs $100 more than WI Registered Agent.org across three years, which the wider coverage justifies on our method.
What you get
- Registration prepared and filed
- Your registered agent, free for the first year
- Service of process scanned the same business day, no fee
Why pick it
- $199 over the state fee
- Service of process scanned the same business day, no fee
- Registered agent free for the first year
- Same price in all fifty states
Less good
- $149 agent renewal, $50 above WI Registered Agent.org
Place2
Best local optionWI Registered Agent.org
2. WI Registered Agent.org: best for a low Wisconsin agent renewal
$199 to register, $99 yearly after
Our mark8.9out of 10
Number 2 is WI Registered Agent.org: the Wisconsin registration filed for $199, the first agent year included and $99 a year after.
The plan covers an in-state street address for your registered office, with legal documents scanned and sent to you online.
What you get
- Registration prepared and filed
- A year of registered agent service
Why pick it
- A year of registered agent service included
- Low $99 agent renewal
- $199 + state fee
Less good
- Wisconsin only; home state needs its own agent
- Charges $99 for the EIN application
Place3
Best for a Wisconsin-only companyWisconsin Registered Agent.co
3. Wisconsin Registered Agent.co: best for Wisconsin registrations
$199 to register, $99 yearly after
Our mark8.7out of 10
Third: Wisconsin Registered Agent.co, for the Wisconsin registration filed for $199, the first agent year included and $99 a year after.
The plan covers an in-state street address for your registered office, with legal documents scanned and sent to you online.
It mirrors WI Registered Agent.org on price and features; either works.
What you get
- Registration prepared and filed
- A year of registered agent service
Why pick it
- Low $99 agent renewal
- A year of registered agent service included
- $199 + state fee
Less good
- Wisconsin only; home state needs its own agent
- Charges $99 for the EIN application
Quick comparison: Wisconsin
| Rank | Service | Our score | Service fee | Year two | Best for | Link |
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| 1 | Mainstay Filing | 9.1 | $199 | $149/yr | Companies registered in several states | Visit Mainstay FilingPartner link. We may earn money if you buy. |
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| 2 | WI Registered Agent.org | 8.9 | $199 | $99/yr | Lowest agent renewal on this list | Visit WI Registered Agent.orgPartner link. We may earn money if you buy. |
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| 3 | Wisconsin Registered Agent.co | 8.7 | $199 | $99/yr | Lowest agent renewal on this list | Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy. |
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Scores are The Founders Review's own editorial scores out of 10, from the criteria on our How we rank page. They are not customer ratings.
Wisconsin foreign registration service pricing (2026): annual price, renewal price and three-year total
| Service | Year one | Year two | Year three | Three-year total | Agent in year one |
|---|
| Mainstay Filing | $199 | $149 | $149 | $497 | Free |
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| WI Registered Agent.org | $199 | $99 | $99 | $397 | Included |
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| Wisconsin Registered Agent.co | $199 | $99 | $99 | $397 | Included |
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Read from each provider's pricing page on November 12, 2026. Every service adds the $100 state fee, so it is left out above.
How the order was decided
Our method scores three-year cost (30%) and what one price covers (30%) most heavily, then renewal terms, fit for the state and price clarity. Here the order came down to what one price covers.
A registering company already has a home state; covering both with one provider beat WI Registered Agent.org's lower renewal.
Our method page lists all five criteria.
Wisconsin foreign LLC registration (2026)
A company formed in another state registers with the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services by filing the Foreign Registration Statement, Limited Liability Company (Form 521). The state fee is $100.
After registering, the company files the annual report ($65), due March 31.
Documents you need
- The exact registered name and the date the company was formed.
- A registered agent in Wisconsin; each service on this page acts as one.
- The $100 state fee, paid with the filing.
- A date in your calendar for the annual report and its $65 fee.
What happens if you skip it
Its contracts stay valid (Wis. Stat. 183.0902(3)).
Wisconsin foreign registration service questions
Do I need to register my out-of-state LLC in Wisconsin?
Yes, if the company transacts business there.
How much does foreign registration cost in Wisconsin?
The state charges $100; our picks add $199.
Which form does the state use?
The Foreign Registration Statement, Limited Liability Company (Form 521), filed with the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services.
Do I need a registered agent after registering?
Yes. Every LLC must name a registered agent with an in-state street address.
Which foreign registration services do you rank here?
Mainstay Filing ($199), WI Registered Agent.org ($199) and Wisconsin Registered Agent.co ($199), in the order shown.
Which foreign registration service is best in Wisconsin?
Mainstay Filing tops our list: the Wisconsin registration for $199 plus state fees and a free first year as your registered agent.
Official sources and price pages
- Wisconsin Department of Financial Institutions, Division of Corporate & Consumer Services, confirmed August 2026: dfi.wi.gov/Documents/BusinessServices/BusinessEntities/Forms/CORP5.pdf
- Wisconsin Department of Financial Institutions, Division of Corporate & Consumer Services, confirmed August 2026: dfi.wi.gov/Documents/BusinessServices/BusinessEntities/Forms/CORP5i.pd
- Wisconsin report due date, confirmed August 2026: docs.legis.wisconsin.gov/statutes/statutes/183/II/0210
- Wis. Stat. § 183.0201, confirmed August 2026: dfi.wi.gov/Documents/BusinessServices/BusinessEntities/Forms/CORP502.p
- Wisconsin formation fee: Filing fee, official source, confirmed October 2026: dfi.wi.gov/Pages/BusinessServices/BusinessEntities/Fees.aspx
- Wisconsin registered agent statute, confirmed October 2026: docs.legis.wisconsin.gov/statutes/statutes/183/i/0115
- DFI Form 521, foreign registration statement for an LLC, confirmed October 2026: dfi.wi.gov/Documents/BusinessServices/BusinessEntities/Forms/CORP521.p
- DFI file online, confirmed October 2026: dfi.wi.gov/Pages/BusinessServices/BusinessEntities/FileOnline.aspx
- Wis. Stat. ss. 183.0902 and 183.0905, confirmed October 2026: docs.legis.wisconsin.gov/statutes/statutes/183/ix/0902
- DFI Form 524, withdrawal of registration, confirmed October 2026: dfi.wi.gov/Documents/BusinessServices/BusinessEntities/Forms/CORP524.p
- Wis. Stat. 183.0902, registration to do business in this state, confirmed November 2026: docs.legis.wisconsin.gov/document/statutes/183.0902
- Wisconsin service page of Mainstay Filing, read November 12, 2026
- Pricing and service pages of WI Registered Agent.org, read November 12, 2026
- Pricing and service pages of Wisconsin Registered Agent.co, read November 12, 2026