Foreign registration ratings · Wisconsin
3 Best Foreign Registration Services in Wisconsin (2026)
1. Mainstay Filing: best for companies registered in more than one state
Service fee $199, with $299 due at checkout including the state fee; agent $149 a year after that
Mainstay Filing is rated first: the Wisconsin registration costs $199, and the registered agent is free for year one and $149 a year after.
The agent line is $149 a year from year two, identical across states, after a free first year.
On three-year sums Mainstay is $100 above WI Registered Agent.org; the wider coverage justifies that gap in the rating.
What you get
- The registration, prepared and filed for you
- A free first year of registered agent service
- No-fee scans of service of process on the day it is received
Pros
- $199 service fee, state fee separate
- Registered agent, no charge in year one
- Same-business-day scans of service of process, no fee
- The same amount in all fifty states
Trade-offs
- Agent renewal of $149 is $50 over WI Registered Agent.org
2. WI Registered Agent.org: best for adding Wisconsin and nothing else
$199 plus the state fee, then the agent at $99 a year after year one
WI Registered Agent.org is rated second: $199 on top of the state fee to register in Wisconsin, agent at $99 afterward.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
What you get
- Wisconsin registration filed for you
- The first year as your registered agent
Pros
- $199 service fee and the registration fee
- Year-two agent amount: $99
- The first registered agent year is covered
Trade-offs
- Wisconsin only; your home state needs its own agent
- EIN application billed at $99
3. Wisconsin Registered Agent.co: best for Wisconsin registrations only
Service fee $199, state fee on top; agent $99 a year after that
Wisconsin Registered Agent.co is rated third: $199 on top of the state fee to register in Wisconsin, agent at $99 afterward.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
On amounts and features alone, WI Registered Agent.org and Wisconsin Registered Agent.co are the same, which makes the order between them a close call.
What you get
- Wisconsin registration filed for you
- First-year registered agent service
Pros
- Registration line of $199, plus the state's fee
- First-year registered agent service is included
- $99 a year for the agent after year one
Trade-offs
- Wisconsin only; your home state needs its own agent
- EIN application billed at $99
The 3 ratings summarized
| Line | Service | Rating | Service fee | Year two | Best for | Open |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | 9.1 | $199 | $149/yr | Companies that register in several states | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | WI Registered Agent.org | 8.8 | $199 | $99/yr | The lowest agent renewal we rank here | Visit WI Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Wisconsin Registered Agent.co | 8.6 | $199 | $99/yr | The lowest agent renewal we rank here | Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy. |
Wisconsin foreign registration service amounts for 2026: year one, renewal and three-year sum
| Service | Year one | Year two | Year three | Three-year sum | Agent paid for year one |
|---|---|---|---|---|---|
| Mainstay Filing | $199 | $149 | $149 | $497 | Free |
| WI Registered Agent.org | $199 | $99 | $99 | $397 | Included |
| Wisconsin Registered Agent.co | $199 | $99 | $99 | $397 | Included |
Why Mainstay Filing is on top
Formation Rated puts 27% on cost over years one to three, 27% on inclusions per price and the other 46% on renewal price and terms, fit with state rules and price clarity. In Wisconsin the order came down to inclusions per price.
A foreign registration involves two states, and one provider with one amount in both rated highest on coverage, ahead of WI Registered Agent.org.
Each criterion and its weight is listed on How we rank.
Wisconsin foreign LLC registration: amount, form and office
A company from another state registers by lodging the Foreign Registration Statement, Limited Liability Company (Form 521) with the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services; the state amount is $100.
Registration adds one recurring line: the annual report ($65), due March 31.
Have these ready
- Home-state legal name, spelled exactly, and the formation date.
- An in-state registered agent; every service rated here can fill the role.
- $100 to the state, paid with the filing.
- The date of the annual report and its $65 fee on your calendar.
What skipping Wisconsin registration costs
Contracts it signs remain valid (Wis. Stat. 183.0902(3)).
Wisconsin foreign registration service: your questions
Is registration compulsory for an outside LLC doing business in Wisconsin?
Yes, once it does business there.
What are the costs of foreign registration in Wisconsin?
$100 to the state plus $199 to the service.
What form does Wisconsin use to register a foreign LLC?
the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services handles it; the form's exact title is on the facts line above.
Must a registered agent stay on file after registering?
Yes. A registered agent with a street address in the state stays on record.
Which foreign registration services are rated on this page?
Mainstay Filing ($199), WI Registered Agent.org ($199) and Wisconsin Registered Agent.co ($199), highest rated first.
Which foreign registration service holds the top rating in Wisconsin?
Mainstay Filing, as $199 plus state fees in any state, first-year registered agent service included.
Source lines
- Wisconsin Department of Financial Institutions, Division of Corporate & Consumer Services (ledger date August 2026)
- Wisconsin Department of Financial Institutions, Division of Corporate & Consumer Services (ledger date August 2026)
- Wisconsin report due date (ledger date August 2026)
- Wis. Stat. § 183.0201 (ledger date August 2026)
- Wisconsin formation fee: Filing fee, official source (ledger date October 2026)
- Wisconsin registered agent statute (ledger date October 2026)
- DFI Form 521, foreign registration statement for an LLC (ledger date October 2026)
- DFI file online (ledger date October 2026)
- Wis. Stat. ss. 183.0902 and 183.0905 (ledger date October 2026)
- DFI Form 524, withdrawal of registration (ledger date October 2026)
- Wis. Stat. 183.0902, registration to do business in this state (ledger date November 2026)
- Mainstay Filing, Wisconsin service page: amounts read November 12, 2026
- WI Registered Agent.org, pricing and service pages: amounts read November 12, 2026
- Wisconsin Registered Agent.co, pricing and service pages: amounts read November 12, 2026