3 Best LLC Services in Wisconsin (2026): The Straight Story
Our 2026 ranking of LLC formation services in Wisconsin runs WI Registered Agent.org ($199), Mainstay Filing ($199) and Wisconsin Registered Agent.co ($199). Here's the money: $130 to the state, $397 to $597 to a service across three years.
Straight from the LLC Straight Talk editorial team
The short of it
The short of it
State fee
$130, one time
Every year after
$25 a year
Registered agent
Yes, you have to
Our pick
WI Registered Agent.org, Mainstay Filing then Wisconsin Registered Agent.co
Who we'd use in Wisconsin
The order comes from our five tests: three-year cost first, then what the price covers.
#1Our top pick
1. WI Registered Agent.org: best for a business that never leaves one state
Year one's $199, later years $99
WI Registered Agent.org is who we'd use first in Wisconsin, because forming costs $199 up front (the agent is covered for year one) and $99 each year after.
Its three-year total's under Mainstay Filing's, which makes it the first pick for a company that stays put.
You're still on the hook for the annual report.
What you get
Wisconsin formation filing
Agent service covered for year one
Pluses
$199 to form the LLC
Year one of the agent comes with it
$99 a year from year two
What's not
The annual report stays on your plate
EIN's not included ($99)
#2Works in all 50 states
2. Mainstay Filing: best for handing off the upkeep
$199 a year, plus the $130 state fee
Mainstay Filing comes in second because one yearly price of $199 covers the formation, the registered agent and every annual report.
It ranks lower because three years cost $200 more than WI Registered Agent.org, and price is the biggest test.
It files your annual report, and Wisconsin's $25 gets passed along at cost.
What you get
Formation handled start to finish
Registered agent for twelve straight months
Annual report done for you
EIN application
State fees passed through, no markup
Pluses
One fee: $199 a year
Year two's $199
The EIN application's included
What's not
$100 a year above WI Registered Agent.org after year one
#3Wisconsin specialist
3. Wisconsin Registered Agent.co: best for another in-state choice
Year one's $199, later years $99
Wisconsin Registered Agent.co takes third place: forming costs $199 up front (the agent is covered for year one) and $99 each year after.
You're still on the hook for the annual report.
Price for price, it's a tie with WI Registered Agent.org.
What you get
Wisconsin formation filing
Agent service covered for year one
Pluses
$99 a year from year two
Year one of the agent comes with it
$199 to form the LLC
What's not
The annual report stays on your plate
EIN's not included ($99)
The numbers
#
Company
First year
Then
3 years
What you get
1
WI Registered Agent.org
$199
$99/yr
$397
wisconsin formation filing; agent service covered for year one
Prices as of November 13, 2026. The state's own fees are in the checklist below.
The questions that matter
What's it cost to form an LLC here?
Figure $130 for the state, plus $199 if you hire help in year one.
Across three years the state collects $180, filing fee included. dfi.wi.gov, confirmed October 2026, if you don't believe us
What do I actually send the state?
Here's what starts the company: the Articles of Organization - Limited Liability Company (Form 502), sent to the Department of Financial Institutions (DFI).
The law: Wis. Stat. § 183.0201. dfi.wi.gov, confirmed October 2026, if you don't believe us
Do I have to name a registered agent?
Every LLC must name a registered agent with an in-state street address.
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.
Set aside $25 each year for the annual report. Put the state's date on your calendar: end of the calendar quarter containing the LLC's anniversary date.
The state's late fee is $25.
dfi.wi.gov, confirmed August 2026, if you don't believe us
Do I have to pay somebody?
You can. Skip the service and your three-year bill is the state's $180.
A service adds $397 to $597 over three years, and with Mainstay Filing the reports are in that price.
Why this order?
On money out the door in three years (35% of the score), WI Registered Agent.org wins.
65% of the score comes from money out the door in three years and jobs the price actually covers.
Mainstay Filing costs $200 more over three years than WI Registered Agent.org, which comes to $397.
dfi.wi.gov, confirmed August 2026, if you don't believe us
What the state collects in three years
$180
The rows above, added up
Want to check the total? Add the filing fee, the next two reports and any minimum tax. We don't count costs without a set amount.
Still wondering?
Is the EIN application included?
Only Mainstay Filing throws it in. At the others it's $99 (WI Registered Agent.org) and $99 (Wisconsin Registered Agent.co).
Is there a late fee?
Expect a $25 late fee.
What do the picks cost over three years?
Over three years you're looking at $397 at WI Registered Agent.org, $597 at Mainstay Filing, $397 at Wisconsin Registered Agent.co, before state fees.
Are the fees official?
Each state fee links to its official page, and each service price comes from the company's own site.
Do I have to use a service?
No. You can file with the state yourself. A service saves you time and can be your agent, but nothing makes you hire one.
What's the best LLC service in Wisconsin?
WI Registered Agent.org, because $199 gets your LLC formed, and then the agent's $99 a year. After that, Mainstay Filing and Wisconsin Registered Agent.co.