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Foreign registration cost calculators + Wisconsin

3 Best Foreign Registration Services in Wisconsin (2026): Cost Calculator

Run for 2026, the foreign registration services in Wisconsin that come out best are WI Registered Agent.org ($199), Wisconsin Registered Agent.co ($199) and Mainstay Filing ($199), in that order. The $100 that Wisconsin takes is constant; what varies is the $397 to $497 of service fees by year three.
Calculated by the Formation Calc editorial team

Result order: Formula: 41% cost, 27% coverage, three lesser terms. Details

Wisconsin results

Government fee to register$100dfi.wi.gov {input read October 2026, shown in full}
Year-1 results$199Service side only
Three-year band$397 to $497Three years of provider fees
What the state takes in 3 years$230Independent of the service
Break-evenTotals stay apartNo service passes another

Ranked results

Service prices only. Each result is subject to the same $100 state fee.
1

1. WI Registered Agent.org: best for a single extra state

Leads the results
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 on top of Wisconsin's $100; renewal $99

For Wisconsin, WI Registered Agent.org is the best value since $199 above the state fee and $99 per later year.

On the heaviest term, three-year cost, it beats Mainstay Filing.

Inputs covered

  • The Wisconsin registration filing
  • Agent service for the first year

Adds up well

  • Service fee of $199
  • First agent year included
  • Then $99 a year

Adds up badly

  • Nothing outside this state
2

2. Wisconsin Registered Agent.co: best for another in-state registrant

Local result
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 on top of Wisconsin's $100; renewal $99

Position 2 is Wisconsin Registered Agent.co: $199 above the state fee and $99 per later year.

The year-one and renewal inputs both equal WI Registered Agent.org's.

Inputs covered

  • The Wisconsin registration filing
  • Agent service for the first year

Adds up well

  • First agent year included
  • Service fee of $199
  • Then $99 a year

Adds up badly

  • Nothing outside this state
3

3. Mainstay Filing: best for one fee wherever you register

Full package
Year-1 input$199
Input for year 2 on$149/yr
Result at year 3$497
$199 on top of Wisconsin's $100; renewal $149

Next in the results, Mainstay Filing: registering in Wisconsin adds $199 to state fees, with the opening agent year free.

At year three it falls $100 behind WI Registered Agent.org.

Agent renewal, any state: $149 yearly.

Inputs covered

  • Registration paperwork, filed
  • Registered agent free in year one
  • A price that holds across states

Adds up well

  • $199 above the state fee
  • Helpful if another state follows
  • Agent free for the first year

Adds up badly

  • Agent renews at $149, $50 above WI Registered Agent.org

Running total by year

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1WI Registered Agent.org$199$298$397$595Open WI Registered Agent.orgPartner link. We may earn money if you buy.
2Wisconsin Registered Agent.co$199$298$397$595Open Wisconsin Registered Agent.coPartner link. We may earn money if you buy.
3Mainstay Filing$199$348$497$795Open Mainstay FilingPartner link. We may earn money if you buy.
Prices entered November 13, 2026. Every column adds a renewal. Ranked by running result, the order is steady for ten years.

Try other years

Enter a number of years and the calculator recomputes each service's running total.
Running total over 3 years: WI Registered Agent.org $397, Wisconsin Registered Agent.co $397, Mainstay Filing $497. Lowest of the results: WI Registered Agent.org.

Wisconsin fee list

InputAmountSource
Registration charge$100dfi.wi.gov {input read October 2026, shown in full}
Annual report$65dfi.wi.gov {input read October 2026, shown in full}
State fees over three years$230Filing, reports and any tax
State result = filing fee + the two later reports + any minimum tax. Open-ended costs get a mention but no number.

The working behind Wisconsin

WI Registered Agent.org did better than Wisconsin Registered Agent.co on calculated three-year cost, a 41% term.

WI Registered Agent.org takes the cost term at $397 over three years, and Mainstay Filing would need $100 more.

How Wisconsin describes the foreign LLC registration fee and rules

The Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services accepts $100 and the Foreign Registration Statement, Limited Liability Company (Form 521) from out-of-state LLCs doing business in Wisconsin.

Source wording: dfi.wi.gov {input read October 2026, shown in full}

Without a service

Take the services out and the sum is state fees alone: $230 for three years. Every service stacks its own $397 to $497 on that base.

Wisconsin cost questions

What is the registration fee for a foreign LLC in Wisconsin?

$100 to the state, plus $199 should you hire a provider.

What do these services calculate to over three years?

$397 to $497 in service fees, with state fees on top.

Which form registers the LLC?

Complete Foreign Registration Statement, Limited Liability Company (Form 521) and deliver it to the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services.

What recurring filing follows registration?

The annual report, charged at $65.

When does one service pass another in total cost?

The results do not cross in the first ten years.

Which foreign registration service calculates best for Wisconsin?

WI Registered Agent.org calculates best, followed by Wisconsin Registered Agent.co and Mainstay Filing.

Next calculators

Input sources

  1. Wisconsin Department of Financial Institutions is entered from dfi.wi.gov (August 2026).
  2. Wisconsin Department of Financial Institutions is entered from dfi.wi.gov (August 2026).
  3. Wisconsin report due date is entered from docs.legis.wisconsin.gov (August 2026).
  4. Wis is entered from dfi.wi.gov (August 2026).
  5. Wisconsin formation fee: Filing fee is entered from dfi.wi.gov (October 2026).
  6. Wisconsin registered agent statute is entered from docs.legis.wisconsin.gov (October 2026).
  7. DFI Form 521, foreign registration is entered from dfi.wi.gov (October 2026).
  8. DFI file online is entered from dfi.wi.gov (October 2026).
  9. Wis is entered from docs.legis.wisconsin.gov (October 2026).
  10. DFI Form 524, withdrawal of is entered from dfi.wi.gov (October 2026).
  11. Wis is entered from docs.legis.wisconsin.gov (November 2026).
  12. Number entered from the WI Registered Agent.org pricing page page on November 13, 2026
  13. Number entered from the Wisconsin Registered Agent.co pricing page page on November 13, 2026
  14. Number entered from the Mainstay Filing Wisconsin service page page on November 13, 2026