Step by step · Wisconsin
3 Best Foreign Registration Services in Wisconsin (2026) for Owners
Quick explanation
- State charge to register
- $100
- Proof of existence?
- Not needed
- What comes next
- $65, annual report
- Who we recommend
- Mainstay Filing, WI Registered Agent.org then Wisconsin Registered Agent.co
Our Wisconsin recommendations
Order and weights are explained on how we pick.1. Mainstay Filing: best for growing companies
$199 plus the state fee, then $149 yearly
Mainstay Filing comes out on top: registering costs $199 plus state fees, and the registered agent is free the first year.
Yes, WI Registered Agent.org comes in $100 lower across three years. We still lead with the one that covers all states.
Year one has no registered agent charge. From year two it is $149 a year.
Includes
- Application prepared and filed
- Registered agent, no charge in the first year
- Same service fee wherever you register
Points in its favor
- All fifty states are covered
- Agent service is free for year one
- Service fee of $199
Where it falls short
- Renewal runs $50 over WI Registered Agent.org
2. WI Registered Agent.org: best for a budget registration
$199 plus the state fee, then $99 yearly
Number 2 on the list is WI Registered Agent.org, where three years of service fees come to $397.
Includes
- Registration filed for you
- Agent included for the first year
Points in its favor
- $99 annually after that
- A service fee of $199
- The agent is free for the first year
Where it falls short
- Works in Wisconsin alone, which leaves your home state needing its own agent
3. Wisconsin Registered Agent.co: best for adding one more state
$199 plus the state fee, then $99 yearly
Number 3 on the list is Wisconsin Registered Agent.co, where three years of service fees come to $397.
It charges exactly what WI Registered Agent.org charges; either would serve you well.
Includes
- Registration filed for you
- Agent included for the first year
Points in its favor
- $99 annually after that
- The agent is free for the first year
- A service fee of $199
Where it falls short
- Works in Wisconsin alone, which leaves your home state needing its own agent
How they stack up
| # | Company | Year one | Renewal price | Over three years | Included in the price | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $199 | $149/yr | $497 | application prepared and filed; registered agent, no charge in the first year; same service fee wherever you register | Go to Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | WI Registered Agent.org | $199 | $99/yr | $397 | registration filed for you; agent included for the first year | Go to WI Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Wisconsin Registered Agent.co | $199 | $99/yr | $397 | registration filed for you; agent included for the first year | Go to Wisconsin Registered Agent.coPartner link. We may earn money if you buy. |
Questions explained
At what point is registration required?
Registration comes first: an LLC from another state signs up before transacting business in Wisconsin.
(dfi.wi.gov, October 2026)
What are the fees to register?
The state charges $100, and a service adds $199.
Total state fees across three years: $230. (dfi.wi.gov, October 2026)
Where is the paperwork sent?
Submit the Foreign Registration Statement, Limited Liability Company (Form 521) to the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services.
A certificate from your home state is not part of this filing.
What does it cost to stay registered?
$65 for the annual report.
The due date, in the state's words, is March 31.
What decided the ranking?
How much work the price handles counts for 28%, and Mainstay Filing comes out ahead on it.
Five criteria set the order: what three years cost (34%), how much work the price handles (28%), prices spelled out (16%), renewal terms (12%) and reach beyond one state (10%).
WI Registered Agent.org covers Wisconsin only, so the home state would need a different provider.
Official Wisconsin requirements
| What it covers | Fee or rule | Reference |
|---|---|---|
| Registration charge | $100 | (dfi.wi.gov, October 2026) |
| Document from home state | Not needed | (dfi.wi.gov, October 2026) |
| Annual report | $65 | (dfi.wi.gov, October 2026) |
| Paid to the state in three years | $230 | The rows above, added |
Further questions
Does my home state still require an agent?
Yes. Your home state still requires its own agent, and Mainstay Filing can cover both states under one account.
How do the picks compare over three years?
Mainstay Filing comes to $497; WI Registered Agent.org comes to $397; Wisconsin Registered Agent.co comes to $397, and state fees come extra.
What are the figures based on?
Official schedules for state fees, company pricing for service fees, and every figure carries a date.
Do I have to hire a service?
It is optional, and the state charges the same either way.
Do these services handle the filing?
The picks on this page all file it; state fees are identical.
What is the best foreign registration service for Wisconsin?
We would start with Mainstay Filing, then WI Registered Agent.org and Wisconsin Registered Agent.co.
Official sources and price pages
- dfi.wi.gov: Wisconsin Department of Financial Institutions (confirmed August 2026)
- dfi.wi.gov: Wisconsin Department of Financial Institutions (confirmed August 2026)
- docs.legis.wisconsin.gov: Wisconsin report due date (confirmed August 2026)
- dfi.wi.gov: Wis (confirmed August 2026)
- dfi.wi.gov: Wisconsin formation fee: Filing fee (confirmed October 2026)
- docs.legis.wisconsin.gov: Wisconsin registered agent statute (confirmed October 2026)
- dfi.wi.gov: DFI Form 521, foreign registration (confirmed October 2026)
- dfi.wi.gov: DFI file online (confirmed October 2026)
- docs.legis.wisconsin.gov: Wis (confirmed October 2026)
- dfi.wi.gov: DFI Form 524, withdrawal of (confirmed October 2026)
- docs.legis.wisconsin.gov: Wis (confirmed November 2026)
- Fetched November 13, 2026: the Mainstay Filing Wisconsin service page
- Fetched November 13, 2026: the WI Registered Agent.org pricing page
- Fetched November 13, 2026: the Wisconsin Registered Agent.co pricing page