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Plain CharterLLC questions, short answers.

Short answers · Wisconsin

3 Best Registered Agents in Wisconsin (2026), Plainly Answered

Asked who to hire in Wisconsin in 2026, we'd say Wisconsin Registered Agent.co ($99 a year), Mainstay Filing ($149 a year) and WI Registered Agent.org ($99 a year), in that order. Prices start at $99 to $149 a year and total $297 to $447 over three years.

By the Plain Charter editorial team ·

Short version

Do you need one?
Must have one
What the law calls it
Registered agent
Agent price
$99 to $149 each year
Our picks, in order
Wisconsin Registered Agent.co, Mainstay Filing then WI Registered Agent.org

Wisconsin: our picks

Best first, by our stated criteria.
1We'd start here

1. Wisconsin Registered Agent.co: best for a low yearly price

Annual price $99, renewal price $99

First choice: Wisconsin Registered Agent.co. The reason is simple: the plan is $99 a year for one state, renewing at $99.

It beats Mainstay Filing on three-year cost, the factor we weigh most.

The price covers

  • A local address on file
  • Legal papers scanned to your account

Upsides

  • Annual price $99, renewal price $99
  • Lower yearly cost than Mainstay Filing

What to weigh

  • No coverage outside the state
  • Annual report: your job
Visit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.
2All fifty states

2. Mainstay Filing: best for LLCs in more than one state

Annual price $149, renewal price $149

Mainstay Filing comes second: it costs $149 a year, $149 at renewal, and one account covers any state.

Three years cost $150 more than Wisconsin Registered Agent.co.

The price covers

  • Registered office address
  • Three government mailings a year scanned free
  • Covers LLCs, corporations, LPs, LLPs and nonprofits

Upsides

  • $149 a year, same at renewal
  • Works in every state

What to weigh

  • Higher by $50 a year
  • Does not file the yearly report
Visit Mainstay FilingPartner link. We may earn money if you buy.
3Wisconsin only

3. WI Registered Agent.org: best for local service

Annual price $99, renewal price $99

WI Registered Agent.org is next: the plan is $99 a year for one state, renewing at $99.

Price for price it ties Wisconsin Registered Agent.co.

The price covers

  • A local address on file
  • Legal papers scanned to your account

Upsides

  • Lower yearly cost than Mainstay Filing
  • Annual price $99, renewal price $99

What to weigh

  • No coverage outside the state
  • Annual report: your job
Visit WI Registered Agent.orgPartner link. We may earn money if you buy.

Side-by-side prices

#ServiceYear 1Renewal3-year costIn the price
1Wisconsin Registered Agent.co$99$99/yr$297A local address on file; legal papers scanned to your accountVisit Wisconsin Registered Agent.coPartner link. We may earn money if you buy.
2Mainstay Filing$149$149/yr$447registered office address; three government mailings a year scanned free; Covers LLCs, corporations, LPs, LLPs and nonprofitsVisit Mainstay FilingPartner link. We may earn money if you buy.
3WI Registered Agent.org$99$99/yr$297A local address on file; legal papers scanned to your accountVisit WI Registered Agent.orgPartner link. We may earn money if you buy.
Company prices on November 12, 2026, before state fees.

Questions, answered plainly

Is a registered agent required?

Every LLC must name a registered agent with an in-state street address.

Statute: Wis. Stat. § 183.0115. October 2026 · docs.legis.wisconsin.gov

Who is allowed to be the agent?

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.

Qualify, and you can fill the role yourself for free.

How much is agent service?

$99 to $149 a year from the services we'd use, or $297 to $447 over three years.

State fees stay the same whichever agent you name.

Why does the state want one?

Its job is to receive legal documents and official notices for the company in Wisconsin.

If nobody accepts the papers, a court case can go on without you. What is service of process?

Are there yearly state fees?

The annual report, once a year, at $25 each time. It is due end of the calendar quarter containing the LLC's anniversary date.

August 2026 · dfi.wi.gov

What put the first pick first?

It comes down to three-year cost, where Wisconsin Registered Agent.co is strongest.

What we weigh most: three-year cost (35%) and what the price takes off your plate (30%). Three smaller criteria break close calls.

Wisconsin Registered Agent.co costs $297 over three years, $150 less than Mainstay Filing.

The criteria in full

What Wisconsin requires

RequirementAnswerSource
Fee to form$130October 2026 · dfi.wi.gov
Registered agentMust have oneOctober 2026 · docs.legis.wisconsin.gov
Annual report$25 every yearAugust 2026 · dfi.wi.gov
Paid to the state by year 3$180Total of these fees
Filing fee, the reports in years two and three, then any minimum tax: that is the three-year line.

People also ask

Can an owner be the agent?

Usually yes: check the two rules above, who qualifies and the address.

Which address counts?

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.

What do the picks cost over three years?

Wisconsin Registered Agent.co $297, Mainstay Filing $447 and WI Registered Agent.org $297

What are the numbers based on?

Official schedules for state fees, company pricing for service fees, all dated on this page.

Is a service required by law?

No, you can file yourself if you meet the rules on this page.

Which one should I hire in Wisconsin?

Wisconsin Registered Agent.co first: it charges $99 a year, $99 at renewal, for an LLC that stays in Wisconsin. Mainstay Filing and WI Registered Agent.org follow.

Where these answers come from

  1. dfi.wi.gov (Wisconsin Department of Financial Institutions, August 2026)
  2. dfi.wi.gov (Wisconsin Department of Financial Institutions, August 2026)
  3. docs.legis.wisconsin.gov (Wisconsin report due date, August 2026)
  4. dfi.wi.gov (Wis, August 2026)
  5. dfi.wi.gov (Wisconsin formation fee: Filing fee, October 2026)
  6. docs.legis.wisconsin.gov (Wisconsin registered agent statute, October 2026)
  7. November 12, 2026: Wisconsin Registered Agent.co pricing page
  8. November 12, 2026: Mainstay Filing Wisconsin service page
  9. November 12, 2026: WI Registered Agent.org pricing page