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LLC SchoolhousePlain LLC lessons, one state at a time.

Lesson 3 · Wisconsin

Foreign LLC Registration in Wisconsin (2026): a 4-Step Lesson and the 3 Best Services

Mainstay Filing ($199), WI Registered Agent.org ($199) and Wisconsin Registered Agent.co ($199) earned the top three grades for registering an LLC from another state in Wisconsin in 2026, in that order. Registering involves 4 steps and a $100 state fee, then $65 for each report.

Taught by the LLC Schoolhouse editors

Before you begin

Fee to register$100The official page is dfi.wi.gov, last confirmed in October 2026
Upkeep filing$65Annual report
Three-year state total$230State charges only
How many steps4Numbered below

What you will learn

  • When registration is required
  • The official form and fee
  • The yearly upkeep
  • Which services we would use and why

Who we would hire in Wisconsin

Five weighted criteria from how we grade set the order, and three-year cost and steps handled count most.
Start here

1. Mainstay Filing: best for expanding LLCs

$199 to register, $149 yearly

First in the class in Wisconsin is Mainstay Filing: $199 above the state fee in any state, and the first year of agent service costs nothing.

WI Registered Agent.org is $100 less across three years; handling more of the lesson's steps earns this one the higher mark.

The agent renews at $149 a year in every state.

What the price covers

  • The filing is done for you
  • The registered agent costs nothing in year one
  • The same price in any state

Marks in its favor

  • Agent covered for year one
  • Covers all fifty states
  • $199 to register

Where it loses points

  • The agent renews at $149, $50 higher than WI Registered Agent.org
Wisconsin focus

2. WI Registered Agent.org: best for an inexpensive Wisconsin filing

$199 to register, $99 yearly

WI Registered Agent.org lands in second place, and the reason is clear: it files the Wisconsin registration for $199 and includes a year of agent service, then renews at $99.

What the price covers

  • Registration prepared and filed
  • One year of agent service

Marks in its favor

  • $199 to register
  • $99 yearly from year two
  • No agent fee in year one

Where it loses points

  • A one-state service
Wisconsin focus

3. Wisconsin Registered Agent.co: best for a local filer

$199 to register, $99 yearly

Wisconsin Registered Agent.co lands in third place, and the reason is clear: it files the Wisconsin registration for $199 and includes a year of agent service, then renews at $99.

On price it is level with WI Registered Agent.org.

What the price covers

  • Registration prepared and filed
  • One year of agent service

Marks in its favor

  • No agent fee in year one
  • $199 to register
  • $99 yearly from year two

Where it loses points

  • A one-state service

Prices in one table

#ServiceFirst yearFrom year twoThree-year total
1Mainstay Filing$199$149/yr$497Visit Mainstay FilingPartner link. We may earn money if you buy.
2WI Registered Agent.org$199$99/yr$397Visit WI Registered Agent.orgPartner link. We may earn money if you buy.
3Wisconsin Registered Agent.co$199$99/yr$397Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.
Company prices as posted on November 13, 2026. Add Wisconsin's $100 registration fee to each row.

How to register in Wisconsin

  1. Step
    1

    Find out whether your LLC must register with Wisconsin

    A foreign LLC is simply one formed in another state, and it registers before doing business in Wisconsin. If the LLC works there without registering: Contracts it already signed are still good (Wis. Stat. 183.0902(3)).

    Where this comes from: The official page is dfi.wi.gov, last confirmed in October 2026

  2. Step
    2

    Line up a Wisconsin registered agent

    Every LLC must name a registered agent with an in-state street address. The address has to be an actual physical location with a street address in Wisconsin, not solely a P.O. box, mailbox service or answering service.

    Our picks include this role.

    Where this comes from: The official page is docs.legis.wisconsin.gov, last confirmed in October 2026

  3. Step
    3

    Fill out and file the Foreign Registration Statement, Limited Liability Company

    Registering means giving the Foreign Registration Statement, Limited Liability Company (Form 521) to the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services together with $100.

    Where this comes from: The official page is dfi.wi.gov, last confirmed in October 2026

  4. Step
    4

    Keep the registration active

    A registered foreign LLC files the annual report ($65), March 31.

The cost of this lesson

LinePaid toAmount
Foreign registrationThe state$100
Annual reportThe state$65
Optional serviceService$199 to start
State fees, years one to threeThe state$230
Official Wisconsin fees, cited below. The three-year line adds the filing fee, the reports in years two and three and any minimum tax.

How we graded the Wisconsin picks

won on homework the price handles (33% of the grade), with right behind.

With the LLC active in two states, coverage settled the order.

Common questions

How much does Wisconsin charge a foreign LLC to register?

$100 to the state. A service adds $199.

Which form do I file to register?

The Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services accepts it for foreign registration.

What if the LLC does business there without registering?

Contracts it already signed are still good (Wis. Stat. 183.0902(3)).

What is due after registering?

Plan for the annual report, which costs $65.

Which services are in this lesson?

3 services are covered: Mainstay Filing at $199, WI Registered Agent.org at $199 and Wisconsin Registered Agent.co at $199.

Which service should handle the registration?

Mainstay Filing: a $199 fee for the work plus Wisconsin's own fee, then $149 a year for the agent. Then come WI Registered Agent.org and Wisconsin Registered Agent.co.

Related lessons

Class references

  1. Source for Wisconsin Department of Financial Institutions, Division of Corporate: dfi.wi.gov, confirmed in August 2026, and the reason our figures match the official ones.
  2. Source for Wisconsin Department of Financial Institutions, Division of Corporate: dfi.wi.gov, confirmed in August 2026, and the reason our figures match the official ones.
  3. Source for Wisconsin report due date: docs.legis.wisconsin.gov, confirmed in August 2026, and the reason our figures match the official ones.
  4. Source for Wis: dfi.wi.gov, confirmed in August 2026, and the reason our figures match the official ones.
  5. Source for Wisconsin formation fee: Filing fee, official source: dfi.wi.gov, confirmed in October 2026, and the reason our figures match the official ones.
  6. Source for Wisconsin registered agent statute: docs.legis.wisconsin.gov, confirmed in October 2026, and the reason our figures match the official ones.
  7. Source for DFI Form 521, foreign registration statement for an: dfi.wi.gov, confirmed in October 2026, and the reason our figures match the official ones.
  8. Source for DFI file online: dfi.wi.gov, confirmed in October 2026, and the reason our figures match the official ones.
  9. Source for Wis: docs.legis.wisconsin.gov, confirmed in October 2026, and the reason our figures match the official ones.
  10. Source for DFI Form 524, withdrawal of registration: dfi.wi.gov, confirmed in October 2026, and the reason our figures match the official ones.
  11. Source for Wis: docs.legis.wisconsin.gov, confirmed in November 2026, and the reason our figures match the official ones.
  12. November 13, 2026: the Wisconsin service page for Mainstay Filing
  13. November 13, 2026: the pricing page for WI Registered Agent.org
  14. November 13, 2026: the pricing page for Wisconsin Registered Agent.co