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Quick answer · Wisconsin

3 Best Foreign Registration Services in Wisconsin (2026): The Quick Answer

Wisconsin 2026 ranking of foreign registration services: Wisconsin Registered Agent.co ($199), Mainstay Filing ($199) and WI Registered Agent.org ($199). State fee: $100. Services over three years: $397 to $497.

LLC Q and A editorial team ·

Quick answers

State registration fee
$100
Home-state certificate?
Not required
After registering
$65, annual report
Our pick
Wisconsin Registered Agent.co, Mainstay Filing then WI Registered Agent.org

Best in Wisconsin, in order

Prices come from each company's own page. See the method.
1Top pick

1. Wisconsin Registered Agent.co: best for one extra state

Register for $199; agent renews at $99

Reason for Wisconsin Registered Agent.co at the top: $199 files the registration and the agent renews at $99.

Three years cost less here than at Mainstay Filing; cost carries the most weight.

Price covers

  • Wisconsin registration filing
  • Agent for year one

For

  • First agent year comes with it
  • Then $99 a year
  • Service fee $199

Against

  • Wisconsin only; home state needs another agent
Wisconsin Registered Agent.co sitePartner link. We may earn money if you buy.
2All fifty states

2. Mainstay Filing: best for a growing LLC

Register for $199; agent renews at $149

Second: Mainstay Filing, because $199 in every state, with the first registered agent year included.

A $100 three-year gap to Wisconsin Registered Agent.co explains the lower place.

Registered agent: free in year one, $149 a year after, in any state.

Price covers

  • Registration filing
  • Registered agent, no charge in year one
  • Same price in any state

For

  • All fifty states
  • $199 plus Wisconsin's fee
  • Year-one agent included

Against

  • Agent renews at $149, $50 above Wisconsin Registered Agent.co
Mainstay Filing sitePartner link. We may earn money if you buy.
3Wisconsin only

3. WI Registered Agent.org: best for another local option

Register for $199; agent renews at $99

Why WI Registered Agent.org is third: $199 files the registration and the agent renews at $99.

Same published prices as Wisconsin Registered Agent.co, so the order between them is close.

Price covers

  • Wisconsin registration filing
  • Agent for year one

For

  • First agent year comes with it
  • Service fee $199
  • Then $99 a year

Against

  • Wisconsin only; home state needs another agent
WI Registered Agent.org sitePartner link. We may earn money if you buy.

Side by side

#CompanyYear 1RenewalTotal, 3 yearsCovers
1Wisconsin Registered Agent.co$199$99/yr$397wisconsin registration filing; agent for year oneWisconsin Registered Agent.co sitePartner link. We may earn money if you buy.
2Mainstay Filing$199$149/yr$497registration filing; registered agent, no charge in year one; same price in any stateMainstay Filing sitePartner link. We may earn money if you buy.
3WI Registered Agent.org$199$99/yr$397wisconsin registration filing; agent for year oneWI Registered Agent.org sitePartner link. We may earn money if you buy.
Prices as of November 13, 2026. State fees are in the checklist below.

Key questions

When must an out-of-state LLC register?

Register with the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services first; do business in Wisconsin second.

dfi.wi.gov (October 2026) is the source of record

What does registering cost?

State fee $100; add $199 if someone files for you.

State fees through year three: $230. dfi.wi.gov (October 2026) is the source of record

What registers the LLC?

Lodge the Foreign Registration Statement, Limited Liability Company (Form 521) at the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services; one filing registers the LLC.

No home-state certificate is required.

What is due after registering?

A recurring annual report, at $65.

Deadline per the state: March 31.

What decided #1?

Three-year price (36%) goes to Wisconsin Registered Agent.co.

Five criteria: three-year price (36%), chores removed from your list (26%), price shown up front (15%), year-two bill (12%) and states served (11%).

Wisconsin Registered Agent.co: $397 for three years, $100 below Mainstay Filing.

The five criteria

What Wisconsin requires of a foreign LLC

RequirementRule or amountOfficial page
Registration fee$100dfi.wi.gov (October 2026) is the source of record
Home-state certificateNot requireddfi.wi.gov (October 2026) is the source of record
Annual report$65dfi.wi.gov (October 2026) is the source of record
State fees, 3 years$230Total of the rows above
To verify the total: filing fee, two later reports, minimum tax if one applies. Costs without a set amount are excluded.

More replies

Does the home state still need an agent?

Yes, in most cases. A company active in every state, such as Mainstay Filing, can cover home and this state together.

What do the picks cost over three years?

Totals over three years: Wisconsin Registered Agent.co at $397, Mainstay Filing at $497, WI Registered Agent.org at $397, with state fees on top.

Are the fees official?

State fees come from Wisconsin's official documents. Service prices come from each company's price page. Both are dated here.

Is a service required?

No. Owners can file directly. A service saves time and can act as agent.

Can someone register the LLC for me?

All of them do; only the service fee differs.

Who ranks first in Wisconsin?

Wisconsin Registered Agent.co: it charges $199 with first-year agent service included, then $99 annually. Behind it: Mainstay Filing and WI Registered Agent.org.

Source list

  1. Q and A source note covering Wisconsin Department of Financial Institutions, found at dfi.wi.gov and dated August 2026, kept on file
  2. Q and A source note covering Wisconsin Department of Financial Institutions, found at dfi.wi.gov and dated August 2026, kept on file
  3. Q and A source note covering Wisconsin report due date, found at docs.legis.wisconsin.gov and dated August 2026, kept on file
  4. Q and A source note covering Wis, found at dfi.wi.gov and dated August 2026, kept on file
  5. Q and A source note covering Wisconsin formation fee: Filing fee, found at dfi.wi.gov and dated October 2026, kept on file
  6. Q and A source note covering Wisconsin registered agent statute, found at docs.legis.wisconsin.gov and dated October 2026, kept on file
  7. Q and A source note covering DFI Form 521, foreign registration, found at dfi.wi.gov and dated October 2026, kept on file
  8. Q and A source note covering DFI file online, found at dfi.wi.gov and dated October 2026, kept on file
  9. Q and A source note covering Wis, found at docs.legis.wisconsin.gov and dated October 2026, kept on file
  10. Q and A source note covering DFI Form 524, withdrawal of, found at dfi.wi.gov and dated October 2026, kept on file
  11. Q and A source note covering Wis, found at docs.legis.wisconsin.gov and dated November 2026, kept on file
  12. Wisconsin Registered Agent.co pricing page, read November 13, 2026
  13. Mainstay Filing Wisconsin service page, read November 13, 2026
  14. WI Registered Agent.org pricing page, read November 13, 2026