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Plain CharterLLC questions, short answers.

No legalese · Iowa

3 Best Foreign Registration Services in Iowa (2026), Plainly Answered

Asked who to hire in Iowa in 2026, we'd say Mainstay Filing ($199), IA Registered Agent.org ($199) and Iowa Registered Agent.co ($199), in that order. Count on $100 for the state and $397 to $497 in service fees by year three.

By the Plain Charter editorial team ·

The short answer

State fee to register
$100
Certificate required?
Required (90 day limit)
Ongoing filing
$30, biennial report
Best picks
Mainstay Filing, IA Registered Agent.org then Iowa Registered Agent.co

Who we'd hire in Iowa

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

1. Mainstay Filing: best for one price in any state

$199 plus the $100 state fee; renewal $149

Mainstay Filing is the one we'd hire first in Iowa, because its $199 fee is the same in any state, with year one of registered agent service included.

Yes, IA Registered Agent.org is $100 less across three years. We still put the pick that covers every state first.

Year two on, plan on $149 a year for the registered agent.

The price covers

  • Your foreign filing
  • Registered agent, no charge in year one
  • One price nationwide

Upsides

  • Ready for the next state
  • No agent fee in year one
  • $199 to register

What to weigh

  • Renewal $50 above IA Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy.
2One-state plan

2. IA Registered Agent.org: best for one extra state

$199 plus the $100 state fee; renewal $99

IA Registered Agent.org ranks second, because the filing costs $199 and the yearly agent renewal is $99.

The price covers

  • Registration, filed
  • Agent included, year one

Upsides

  • Low $99 renewal
  • Agent service, year one
  • Service fee $199

What to weigh

  • Home state needs a separate agent
Visit IA Registered Agent.orgPartner link. We may earn money if you buy.
3One-state plan

3. Iowa Registered Agent.co: best for a low agent renewal

$199 plus the $100 state fee; renewal $99

Iowa Registered Agent.co ranks third, because the filing costs $199 and the yearly agent renewal is $99.

Its prices match IA Registered Agent.org exactly, so either is a sound choice.

The price covers

  • Registration, filed
  • Agent included, year one

Upsides

  • Agent service, year one
  • Low $99 renewal
  • Service fee $199

What to weigh

  • Home state needs a separate agent
Visit Iowa Registered Agent.coPartner link. We may earn money if you buy.

How the picks compare

#PickTo startRenewal priceBy year threeIncludes
1Mainstay Filing$199$149/yr$497your foreign filing; registered agent, no charge in year one; one price nationwideVisit Mainstay FilingPartner link. We may earn money if you buy.
2IA Registered Agent.org$199$99/yr$397Registration, filed; agent included, year oneVisit IA Registered Agent.orgPartner link. We may earn money if you buy.
3Iowa Registered Agent.co$199$99/yr$397Registration, filed; agent included, year oneVisit Iowa Registered Agent.coPartner link. We may earn money if you buy.
Read from company pricing on November 12, 2026; three years means the first year plus two renewals.

What owners ask

Does my out-of-state LLC need to register?

Before it does business in Iowa, an LLC formed elsewhere registers with the Iowa Secretary of State, Business Services.

Without it: it loses access to the state's courts as a plaintiff (Iowa Code 489.902).

sos.iowa.gov (October 2026)

What will it cost to register?

The state charges $100; a service adds $199.

Three years of state fees, registration included: $130. sos.iowa.gov (October 2026)

Where is the filing sent?

The Iowa Secretary of State, Business Services accepts the Limited Liability Company Foreign Registration Statement (Form 635_0010) from LLCs formed elsewhere.

Add certificate of existence (good standing) from the state or country of formation no older than 90 days.

What recurs once registered?

The biennial report, at $30.

When: January 1 to April 1 of each odd-numbered year.

Why this order?

Because of what the price takes off your plate: Mainstay Filing does best there, and it counts for 30%.

We start with three-year cost (35%), then what the price takes off your plate (30%).

IA Registered Agent.org serves Iowa only, so your home state would need someone else.

Our full method

The official requirements

ItemDetailSource
Application fee$100sos.iowa.gov (October 2026)
Good standing proofRequired, 90 dayssos.iowa.gov (October 2026)
Biennial report$30sos.iowa.gov (October 2026)
State fees, first three years$130Added up from the above
We add the filing, two years of reports and any minimum tax for the three-year line. Publication and other variable costs are excluded.

More answers

Is one agent enough for both states?

Usually, yes. One national provider can serve both; a local one cannot.

Over three years, what does each charge?

Mainstay Filing $497, IA Registered Agent.org $397 and Iowa Registered Agent.co $397, before state fees.

What sources do you use?

Official Iowa sources for state fees, company price pages for service fees.

Do I have to use a service?

Not required. Services charge for doing the paperwork for you.

Can a service file the registration for me?

Each of our picks prepares and files it; the state fee stays the same.

Who comes first in Iowa?

We rank Mainstay Filing first on what the price takes off your plate, with IA Registered Agent.org and Iowa Registered Agent.co behind it.

Sources for this page

  1. help.sos.iowa.gov (Iowa Secretary of State, Business, August 2026)
  2. help.sos.iowa.gov (Iowa Secretary of State, Business, August 2026)
  3. legis.iowa.gov (Iowa report due date, August 2026)
  4. legis.iowa.gov (Iowa Code § 489.201, August 2026)
  5. legis.iowa.gov (Iowa formation fee: Filing fee, October 2026)
  6. legis.iowa.gov (Iowa registered agent statute, October 2026)
  7. sos.iowa.gov (Iowa Secretary of State, business, October 2026)
  8. sos.iowa.gov (LLC Foreign Registration Statement, Form, October 2026)
  9. legis.iowa.gov (Iowa Code 489.902, registration requirement, October 2026)
  10. legis.iowa.gov (Iowa Code 489.905, activities that, October 2026)
  11. sos.iowa.gov (Iowa Secretary of State, certificate, October 2026)
  12. legis.iowa.gov (Iowa Code 489.902, registration to, November 2026)
  13. legis.iowa.gov (Iowa Code 490.1502, registration of, November 2026)
  14. Prices from the Mainstay Filing Iowa service page on November 12, 2026
  15. Prices from the IA Registered Agent.org pricing page on November 12, 2026
  16. Prices from the Iowa Registered Agent.co pricing page on November 12, 2026