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Founder Mentor Guide

Mentor notes 3 · Wisconsin

Foreign LLC Registration Walkthrough, Wisconsin (2026): 4 Stages and the 3 Best Services

If you want help with bringing an LLC into a second state in Wisconsin in 2026, phone Wisconsin Registered Agent.co ($199), Mainstay Filing ($199) and WI Registered Agent.org ($199), in that order. You will pass through 4 stages, pay $100 to the state and plan for what comes afterward.

Advice from the Founder Mentor Guide mentors

The short version

Cost to register
$100
We pulled this from dfi.wi.gov in October 2026
Yearly filing
$65
Annual report
State cost, years 1 to 3
$230
Registration and reports
Stages
4
First to last

What you will get from this walkthrough

  • Whether Wisconsin registration applies to your LLC
  • The form and the fee
  • The recurring filing
  • Our recommendations, with reasons

The Wisconsin call list

The mentors' five criteria are on how we score, and they decide the order.

Our call

1. Wisconsin Registered Agent.co: best for a budget registration

Our first call$199 plus fees; renewal $99 annually

If you only phone one company, make it Wisconsin Registered Agent.co, because a service fee of $199 and an agent renewal of $99 a year.

Because Mainstay Filing costs more over three years, this service takes the top spot.

What you get

  • The Wisconsin registration, prepared and sent
  • Agent service for one year comes with the price

What works

  • No agent fee in year one
  • A small $99 renewal
  • $199 above the state fee

What to watch

  • Your home state needs a different agent
Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.

Our call

2. Mainstay Filing: best for a second state and beyond

Upkeep covered$199 plus fees; renewal $149 annually

Second place goes to Mainstay Filing, since the first registered agent year comes with the $199 registration service, so you only add the state fee.

Wisconsin Registered Agent.co comes in $100 cheaper across three years, enough to keep this one out of first.

After the included year, count on $149 per year for the agent, wherever you register.

What you get

  • Registration filed for you
  • Your first year of registered agent is free
  • Service in all fifty states

What works

  • Year-one agent is covered
  • $199 above the state fee
  • Ready for your next state too

What to watch

  • Wisconsin Registered Agent.co charges $50 less for the agent
Visit Mainstay FilingPartner link. We may earn money if you buy.

Our call

3. WI Registered Agent.org: best for a local filer

In-state service$199 plus fees; renewal $99 annually

Third place goes to WI Registered Agent.org, since a service fee of $199 and an agent renewal of $99 a year.

It lists the same prices as Wisconsin Registered Agent.co.

What you get

  • The Wisconsin registration, prepared and sent
  • Agent service for one year comes with the price

What works

  • No agent fee in year one
  • $199 above the state fee
  • A small $99 renewal

What to watch

  • Your home state needs a different agent
Visit WI Registered Agent.orgPartner link. We may earn money if you buy.

3 services, compared

#ServiceFirst yearFrom year twoThree-year total
1Wisconsin Registered Agent.co$199$99/yr$397Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.
2Mainstay Filing$199$149/yr$497Visit Mainstay FilingPartner link. We may earn money if you buy.
3WI Registered Agent.org$199$99/yr$397Visit WI Registered Agent.orgPartner link. We may earn money if you buy.
Listed prices, viewed November 13, 2026. Plan for $100 more in state fees, whichever row you pick.

How registration works in Wisconsin

  1. Stage 1

    Is Wisconsin registration required for your LLC?

    If your LLC came from elsewhere and will operate in Wisconsin, you register first as a foreign LLC. What can go wrong without registering: agreements it already made are not wiped out (Wis. Stat. 183.0902(3))

    Check it yourself: We pulled this from dfi.wi.gov in October 2026

  2. Stage 2

    Choose your 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 ranking covers this role.

    Check it yourself: We pulled this from docs.legis.wisconsin.gov in October 2026

  3. Stage 3

    Get ready the Foreign Registration Statement, Limited Liability Company

    The form and the $100 fee travel together to the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services.

    Check it yourself: We pulled this from dfi.wi.gov in October 2026

  4. Stage 4

    Keep the registration in force

    Send the annual report with $65, March 31 to keep the registration going.

Wisconsin costs by stage

StagePayeeCost
Registering the LLCState agency$100
Annual reportState agency$65
Service, if you hire oneThe service company$199 for year one
Three years of state feesState agency$230
Whatever goes to Wisconsin is an official fee you can verify on the pages listed below. The three-year row combines the filing, two later reports and a minimum tax where there is one; service prices stay out of it.

The thinking behind the order

Three-year bill settled first place in Wisconsin. It is 32% of the score, and the rest comes from work taken off your desk, year-two price, fit for where you operate and honest pricing.

Add up three years and Wisconsin Registered Agent.co lands on $397, $100 below Mainstay Filing.

What founders ask

What will registering my LLC in Wisconsin cost?

$100 in state fees. The services here charge $199 extra.

Which form do I file to register?

Fill in the form named in stage 4 and send it to the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services.

What if the LLC does business there without registering?

agreements it already made are not wiped out (Wis. Stat. 183.0902(3))

What is due after registering?

The annual report is what keeps the registration alive, at $65.

Which services are in this lesson?

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

Which service should handle the registration?

Go with Wisconsin Registered Agent.co: $199 plus the state fee to register, and $99 every year afterward. Then Mainstay Filing and WI Registered Agent.org.

Where we got the facts

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