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The Formation Desk

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Registered agent picks · Wisconsin

3 Best Registered Agents in Wisconsin (2026)

The The Formation Desk call for registered agents in Wisconsin in 2026: Mainstay Filing ($149 a year), WI Registered Agent.org ($99 a year) and Wisconsin Registered Agent.co ($99 a year), in that order. Mainstay Filing takes the call: $149 for a single agent plan that works in every state, $149 on renewal.
Written by The Formation Desk editorial team
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Number one here

1. Mainstay Filing: best for every state

$149 a year, and it holds on renewal

Editorial score 9.1 out of 10

The desk picks Mainstay Filing: $149 a year for an agent that goes wherever the company does, plus the first three government mailings each year scanned free.

Haven't formed yet? Mainstay's $199-a-year package handles the Wisconsin filing and the annual report.

Over three years Mainstay runs $150 more than WI Registered Agent.org, and the desk thinks the wider coverage is worth it.

In the price

  • An in-state street address on the public record
  • Free scans of service of process, uploaded the same business day
  • Your first three government mailings each year, scanned free
  • Compliance reminders

Strengths

  • First three government mailings each year, scanned free
  • $149 a year and it holds on renewal
  • Free scans of served papers on the same business day
  • Works for LLCs, corporations, LPs, LLPs and nonprofits alike

Cons

  • $50 a year more than WI Registered Agent.org for agent service alone
  • Only the formation package files annual reports
Visit Mainstay FilingPartner link. We may earn money if you buy. Mainstay Filing up close
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Best yearly price

2. WI Registered Agent.org: best for the lowest price per year on this list

$99 a year, and it holds on renewal

Editorial score 8.8 out of 10

Runner-up, WI Registered Agent.org: a Wisconsin specialist at $99 a year, with an in-state street address as the registered office.

With WI Registered Agent.org the registered office has a street address in the state, and served papers show up as scans online.

In the price

  • The in-state address the state asks you to file
  • Everything served on the company is scanned for you

Strengths

  • Costs $99 a year, the same each year
  • Forms LLCs too, with the first agent year free
  • Cheaper each year than Mainstay Filing

Cons

  • The annual report is your job
  • Wisconsin only; you need another agent elsewhere
Visit WI Registered Agent.orgPartner link. We may earn money if you buy. WI Registered Agent.org up close
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Wisconsin-focused

3. Wisconsin Registered Agent.co: best for Wisconsin companies

$99 a year, and it holds on renewal

Editorial score 8.6 out of 10

Third, Wisconsin Registered Agent.co: a Wisconsin specialist at $99 a year, with an in-state street address as the registered office.

Wisconsin Registered Agent.co takes the registered office role, using an in-state address and scanning what is served there.

The published prices and features do not separate WI Registered Agent.org from Wisconsin Registered Agent.co; take whichever you like.

In the price

  • A physical address in the state, as the registered office
  • Papers served on the company arrive in your account as scans

Strengths

  • Forms LLCs too, with the first agent year free
  • Costs $99 a year, the same each year
  • Comes in under Mainstay Filing every year

Cons

  • The annual report is your job
  • Wisconsin only; you need another agent elsewhere
Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy. Wisconsin Registered Agent.co up close

The desk's 3 picks in brief

Pick Service Desk score Price a year Renewal Good for Visit
1 Mainstay Filing 9.1 $149 $149/yr One agent that covers every state Visit Mainstay FilingPartner link. We may earn money if you buy.
2 WI Registered Agent.org 8.8 $99 $99/yr The lowest yearly price we rank here Visit WI Registered Agent.orgPartner link. We may earn money if you buy.
3 Wisconsin Registered Agent.co 8.6 $99 $99/yr The lowest yearly price we rank here Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.

A score out of 10 here is editorial judgment built on the criteria explained on How we rank, not an average of customer ratings.

What a Wisconsin registered agent costs in 2026: year one, renewal and the three-year bill

Service Year one Year two Year three Bill over three years Price holds on renewal
Mainstay Filing $149 $149 $149 $447 Yes
WI Registered Agent.org $99 $99 $99 $297 Yes
Wisconsin Registered Agent.co $99 $99 $99 $297 Yes

Every price here was read off the company's own pages on November 12, 2026. Wisconsin charges the same state fees whichever agent you name.

Why it falls this way

Here is the weighting: 33% for spend over three years, 33% for work the price removes, 34% spread over what renewal looks like, fit with the state and plain price display. In Wisconsin, work the price removes made the call.

Mainstay's agent plan brings more to the table: served papers are scanned the same business day for nothing, one price in all fifty states and three government mailings a year scanned free. WI Registered Agent.org is cheaper, and it was close.

The full criteria and weights are on How we rank.

Wisconsin registered agent rules straight from the Department of Financial Institutions (DFI) (official)

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. The law behind it: Wis. Stat. § 183.0115.

Wisconsin's annual report: what it costs, when it is due, who gets the notice

Wisconsin LLCs send in the annual report every year, due end of the calendar quarter containing the LLC's anniversary date. The state's fee is $25. Send it late and $25 gets added. Notices about it land with your registered agent.

Wisconsin registered agent: reader questions

Do you need a registered agent to run a Wisconsin LLC?

You do. Wisconsin wants a registered agent on file for every LLC, and the agent must have a street address in the state.

What should you expect to pay a Wisconsin registered agent?

Plan on $99 to $149 a year, and the price holds when it renews.

Could you serve as your own registered agent?

You can if the state's rules allow it. A Wisconsin resident, or a business entity formed in Wisconsin or authorized there, whose business office is the registered office. The agent needs an email address and has to consent.

When does the Wisconsin annual report have to go in?

Get it in by end of the calendar quarter containing the LLC's anniversary date. The state's cut is $25. Miss the date and it costs $25 more.

Which registered agents did the desk rank here?

Mainstay Filing ($149 a year), WI Registered Agent.org ($99 a year) and Wisconsin Registered Agent.co ($99 a year), best pick first.

Who is our pick for registered agent in Wisconsin?

Mainstay Filing, since $149 a year, and it holds on renewal, with papers served on the company scanned the same business day for free.

Read next

Where the numbers came from

  1. Wisconsin Department of Financial Institutions, Division of Corporate & Consumer Services, last checked August 2026
  2. Wisconsin Department of Financial Institutions, Division of Corporate & Consumer Services, last checked August 2026
  3. Wisconsin report due date, last checked August 2026
  4. Wis. Stat. § 183.0201, last checked August 2026
  5. Wisconsin formation fee: Filing fee, official source, last checked October 2026
  6. Wisconsin registered agent statute, last checked October 2026
  7. Mainstay Filing: Wisconsin service page, as of November 12, 2026
  8. WI Registered Agent.org: pricing and service pages, as of November 12, 2026
  9. Wisconsin Registered Agent.co: pricing and service pages, as of November 12, 2026