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Biz Formation Report

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

LLC formation report · Wisconsin

3 Best LLC Services in Wisconsin (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks LLC services in Wisconsin for 2026 as WI Registered Agent.org ($199), Mainstay Filing ($199) and Wisconsin Registered Agent.co ($199), in that order. WI Registered Agent.org earns the top grade: $199 for formation on top of the state fee, then $99 a year for the agent.

No.1

Best here

1. WI Registered Agent.org: best for a Wisconsin LLC that expects to stay put

Score9.5out of 10
$199 for formation, then $99 a year for the agent, plus the state fee

Top grade, WI Registered Agent.org: $199 plus the Wisconsin filing fee, year-one registered agent service included, then $99 a year.

The plan seats the company at an in-state street address and posts scans of papers served there to your online account.

The annual report is outside its published prices, so you submit it to Wisconsin yourself every year.

It beats Mainstay Filing on three-year cost.

What you get

  • Articles prepared and filed
  • A first year of registered agent service

Good

  • $199 for formation, plus the state fee
  • Agent renewal of $99
  • Includes a year of registered agent service

Weak spots

  • Does not handle the annual report
  • The EIN application costs $99 extra
Visit WI Registered Agent.orgPartner link. We may earn money if you buy.
Read the WI Registered Agent.org review
No.2

Best all-in yearly price

2. Mainstay Filing: best for formation, agent and annual report on one invoice

Score9.0out of 10
$199 a year plus the state fee, $329 due at checkout

Second grade, Mainstay Filing: $199 a year buys the Wisconsin formation, a year as your registered agent and the annual report filing, then renews at $199.

The renewal covers the annual report, which Mainstay files for you. Wisconsin collects $25 every year, with a deadline of end of the calendar quarter containing the LLC's anniversary date, and a late filing adds $25; Mainstay passes the state's fee through at cost.

WI Registered Agent.org is $200 cheaper across three years, and that difference lowers Mainstay Filing's cost grade.

What you get

  • Formation prepared and filed on your behalf
  • Your registered agent for twelve months
  • The annual report prepared and filed
  • The EIN application

Good

  • Includes the EIN application
  • A single $199 yearly price, including the annual report
  • Wisconsin's state fee is passed through at cost
  • Renewal is $199 with no add-ons

Weak spots

  • Its agent renews at $100 a year more than WI Registered Agent.org's
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review
No.3

Low renewal

3. Wisconsin Registered Agent.co: best for local Wisconsin formation

Score8.7out of 10
$199 for formation, then $99 a year for the agent, plus the state fee

Third grade, Wisconsin Registered Agent.co: $199 plus the Wisconsin filing fee, year-one registered agent service included, then $99 a year.

The plan seats the company at an in-state street address and posts scans of papers served there to your online account.

The annual report is outside its published prices, so you submit it to Wisconsin yourself every year.

Prices and features do not separate WI Registered Agent.org from Wisconsin Registered Agent.co; either works.

What you get

  • Articles prepared and filed
  • Year-one registered agent service

Good

  • Then $99 per year for the agent
  • Registered agent service included for year one
  • Forms the LLC at $199 plus filing fees

Weak spots

  • Does not handle the annual report
  • The EIN application costs $99 extra
Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.
Read the Wisconsin Registered Agent.co review

Summary of the 3 grades

RankProviderGradeService feeYear twoBest fitSite
1WI Registered Agent.org9.5$199$99/yrA Wisconsin-only LLC keeping costs downVisit WI Registered Agent.orgPartner link. We may earn money if you buy.
2Mainstay Filing9.0$199$199/yrFormation, agent and annual report on one invoiceVisit Mainstay FilingPartner link. We may earn money if you buy.
3Wisconsin Registered Agent.co8.7$199$99/yrA Wisconsin-only LLC keeping costs downVisit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.

The grades are editorial: Biz Formation Report assigns every mark out of 10 using the criteria on How we rank, not customer ratings.

Wisconsin LLC service prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayAnnual report done for you
WI Registered Agent.org$199$99$99$397No
Mainstay Filing$199$199$199$597Yes
Wisconsin Registered Agent.co$199$99$99$397No

All prices were taken from the companies' own websites on November 12, 2026. Wisconsin's $130 filing fee is payable on top of each row and is not part of these totals.

Why WI Registered Agent.org ranks first

Of the grade, 32% rests on three-year bill and 32% on what the money buys; renewal handling, local rules match and pricing openness share the remaining 36%. Three-year bill decided Wisconsin.

Total outlay with WI Registered Agent.org over three years: $397, $200 less than Mainstay Filing. Mainstay would add the annual report filing, but owners can file it alone for the state fee, so the lower price decided the grade.

Every criterion and weight is listed on How we rank.

Wisconsin LLC filing fee and form, from official sources

The Department of Financial Institutions (DFI) charges $130 for the Articles of Organization - Limited Liability Company (Form 502). Each provider here adds that fee at cost on top of its own.

What a Wisconsin LLC owes after formation

Expect the annual report every year, with a deadline of end of the calendar quarter containing the LLC's anniversary date. It costs $25. Late filing adds $25. Every LLC must name a registered agent with an in-state street address.

Wisconsin LLC service: common questions

What does Wisconsin charge to start an LLC, all in?

$130 goes to the state and $199 to the service.

Which document starts the LLC?

the Department of Financial Institutions (DFI) accepts the Articles of Organization - Limited Liability Company (Form 502).

Is a registered agent mandatory for a Wisconsin LLC?

Yes. Wisconsin requires one, with a physical street address in the state, from the day the LLC exists.

What recurring paperwork follows an LLC in Wisconsin?

A single item: the annual report, filed every year (end of the calendar quarter containing the LLC's anniversary date) for $25.

Does the service price cover the EIN?

The Mainstay Filing yearly price covers it. WI Registered Agent.org and Wisconsin Registered Agent.co list it at $99. The IRS does not charge for issuing an EIN.

What is the best LLC service in Wisconsin, by our report?

WI Registered Agent.org: forming in Wisconsin costs $199 beyond the state's fee, with the first agent year included, and keeping the agent runs $99 a year.

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: WI Registered Agent.org, pricing and service pages
  8. Pulled November 12, 2026: Mainstay Filing, Wisconsin service page
  9. Pulled November 12, 2026: Wisconsin Registered Agent.co, pricing and service pages