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Biz Formation Report

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

Registered agents report · Wisconsin

3 Best Registered Agents in Wisconsin (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks registered agents in Wisconsin for 2026 as Wisconsin Registered Agent.co ($99 a year), Mainstay Filing ($149 a year) and WI Registered Agent.org ($99 a year), in that order. Wisconsin Registered Agent.co earns the top grade: a Wisconsin-focused agent at $99 a year, supplying an in-state street address for the registered office.

No.1

Number one here

1. Wisconsin Registered Agent.co: best for the lowest annual price on this list

Score9.1out of 10
$99 a year, unchanged at renewal

Top grade, Wisconsin Registered Agent.co: $99 a year flat, with online scans of any legal papers served.

With Wisconsin Registered Agent.co, the registered office has a street address in the state, and served papers reach you as online scans.

Over three years it costs less than Mainstay Filing, and cost is one of our two heaviest criteria.

What you get

  • A street address in the state, on the public record
  • Served legal documents are scanned and made available online

Good

  • A flat $99 per year
  • Beats Mainstay Filing on yearly cost
  • Forms LLCs as well, with year-one agent service included

Weak spots

  • The annual report filing is left to you
  • Serves Wisconsin only; other states need a separate agent
Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.
Read the Wisconsin Registered Agent.co review
No.2

Best for multi-state companies

2. Mainstay Filing: best for all fifty states

Score8.6out of 10
$149 a year, unchanged at renewal

Second grade, Mainstay Filing: a $149 yearly plan that works in every state, renewing at $149.

A company still to be formed can use Mainstay's $199-a-year package, which files the Wisconsin paperwork and the annual report.

Wisconsin Registered Agent.co is $150 cheaper across three years, and that difference lowers Mainstay Filing's cost grade.

What you get

  • A physical address in the state on the public record
  • Service of process scanned and uploaded within one business day, free
  • Scans of the first three government mailings each year, free
  • Compliance reminders

Good

  • Served papers scanned within the same business day, free
  • Open to LLCs, corporations, LPs, LLPs and nonprofits
  • Three government mailings a year scanned at no cost
  • $149 a year, no renewal increase

Weak spots

  • The agent alone costs $50 a year more than Wisconsin Registered Agent.co
  • You file annual reports yourself on the agent plan
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review
No.3

Built for Wisconsin

3. WI Registered Agent.org: best for companies based in Wisconsin

Score8.3out of 10
$99 a year, unchanged at renewal

Third grade, WI Registered Agent.org: $99 a year flat, with online scans of any legal papers served.

WI Registered Agent.org puts an in-state street address on file as the registered office and scans whatever is served there.

WI Registered Agent.org matches Wisconsin Registered Agent.co on price and plan features, leaving very little between them.

What you get

  • A physical in-state address listed for the company
  • Served legal documents are scanned and made available online

Good

  • Forms LLCs as well, with year-one agent service included
  • A flat $99 per year
  • Yearly price under Mainstay Filing's

Weak spots

  • The annual report filing is left to you
  • Serves Wisconsin only; other states need a separate agent
Visit WI Registered Agent.orgPartner link. We may earn money if you buy.
Read the WI Registered Agent.org review

Summary of the 3 grades

RankProviderGradePrice per yearRenewal priceBest fitSite
1Wisconsin Registered Agent.co9.1$99$99/yrThe lowest yearly price we rank hereVisit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.
2Mainstay Filing8.6$149$149/yrOne agent across fifty statesVisit Mainstay FilingPartner link. We may earn money if you buy.
3WI Registered Agent.org8.3$99$99/yrThe lowest yearly price we rank hereVisit WI Registered Agent.orgPartner link. We may earn money if you buy.

Our editors set each grade out of 10 from the weighted criteria on How we rank. Customers do not rate anything here.

Wisconsin registered agent prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayRenewal at the same price
Wisconsin Registered Agent.co$99$99$99$297Yes
Mainstay Filing$149$149$149$447Yes
WI Registered Agent.org$99$99$99$297Yes

All prices were taken from the companies' own websites on November 12, 2026. Wisconsin's own fees are the same whichever agent is named.

How the grades were set

Three-year bill was the deciding factor in Wisconsin. The method gives three-year bill and what the money buys 32% each and splits 36% across renewal handling, local rules match and pricing openness.

Total outlay with Wisconsin Registered Agent.co over three years: $297, $150 less than Mainstay Filing. An agent needed only in Wisconsin gains little from fifty-state coverage, so the lower yearly price decided the grade.

Every criterion and weight is listed on How we rank.

Wisconsin registered agent rules according to 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. Authority: Wis. Stat. § 183.0115.

Wisconsin's annual report: cost, deadline and your agent

The annual report is due from every Wisconsin LLC every year, by end of the calendar quarter containing the LLC's anniversary date. The state charges $25. A late filing adds $25. Related notices are mailed to your registered agent.

Wisconsin registered agent: common questions

Does a Wisconsin LLC have to maintain a registered agent?

Yes. The state expects every LLC to keep a registered agent on record, and Wisconsin requires that agent to have a street address inside its borders.

How much do Wisconsin registered agents charge per year?

Annual charges run from $99 to $149, and prices are unchanged at renewal.

Can the owner be the company's own registered agent?

Yes, provided you meet the state's requirements. 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.

What is the filing deadline for the Wisconsin annual report?

The deadline: end of the calendar quarter containing the LLC's anniversary date. The state charges $25. Miss it and $25 is added.

Which registered agents does this report rank?

Wisconsin Registered Agent.co ($99 a year), Mainstay Filing ($149 a year) and WI Registered Agent.org ($99 a year), in descending order of grade.

What is the best-value registered agent in Wisconsin?

Wisconsin Registered Agent.co: $99 a year with no renewal increase, the lowest yearly price on this list.

Related pages

Source notes

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