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Biz Formation Report

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

Foreign registration report · Maryland

3 Best Foreign Registration Services in Maryland (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks foreign registration services in Maryland for 2026 as Mainstay Filing ($199), MD Registered Agent.org ($199) and Maryland Registered Agent.co ($199), in that order. Mainstay Filing earns the top grade: $199 plus the state's fee, with the resident agent free for year one and one price in every state.

No.1

Our top pick

1. Mainstay Filing: best for companies registered in several states

Score9.6out of 10
$199 plus the state fee, then $149 a year for the agent from year two

Top grade, Mainstay Filing: the Maryland registration is filed for $199, and the resident agent is free in year one, then $149 a year.

The agent is free in year one, then costs $149 a year, whatever state the company registers in.

Over three years Mainstay costs $100 more than MD Registered Agent.org; our grading treats the broader coverage as worth that.

What you get

  • The foreign registration, done for you
  • Free scan-and-upload of served papers within the same business day

Good

  • One price across all fifty states
  • Served papers scanned within the same business day, free
  • $199 service fee plus the state's fee

Weak spots

  • The agent renews at $149, $50 more than MD Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review
No.2

Best local option

2. MD Registered Agent.org: best for companies adding Maryland alone

Score9.2out of 10
$199 plus the state fee, then $99 a year for the agent from year two

Second grade, MD Registered Agent.org: the Maryland registration for $199 with year-one 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.

What you get

  • Registration prepared and filed
  • Resident agent service for year one

Good

  • $99 a year for the agent from year two
  • Resident agent service included for year one
  • A $199 registration price, state fee extra

Weak spots

  • Serves Maryland only; the home state still needs its own agent
  • The EIN application costs $99 extra
No.3

Best for a Maryland-only company

3. Maryland Registered Agent.co: best for registering in Maryland only

Score9.0out of 10
$199 service fee and the state fee on top; the agent is $99 annually from year two

Third grade, Maryland Registered Agent.co: the Maryland registration for $199 with year-one 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 two state services, MD Registered Agent.org and Maryland Registered Agent.co, match on price and features, and the order between them is a narrow call.

What you get

  • Registration prepared and filed
  • Resident agent service for year one

Good

  • Includes a year of resident agent service
  • $199 service fee, state fee added
  • $99 a year for the agent from year two

Weak spots

  • Serves Maryland only; the home state still needs its own agent
  • The EIN application costs $99 extra

Summary of the 3 grades

RankProviderGradeService feeYear twoBest fitSite
1Mainstay Filing9.6$199$149/yrCompanies with a presence in several statesVisit Mainstay FilingPartner link. We may earn money if you buy.
2MD Registered Agent.org9.2$199$99/yrThe lowest agent renewal we rank hereVisit MD Registered Agent.orgPartner link. We may earn money if you buy.
3Maryland Registered Agent.co9.0$199$99/yrThe lowest agent renewal we rank hereVisit Maryland Registered Agent.coPartner link. We may earn money if you buy.

Each grade out of 10 comes from Biz Formation Report's editors and the weighted criteria on How we rank; no customer ratings are involved.

Maryland foreign registration service prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayYear-one agent covered
Mainstay Filing$199$149$149$497Not stated
MD Registered Agent.org$199$99$99$397Included
Maryland Registered Agent.co$199$99$99$397Included

All prices were taken from the companies' own websites on November 12, 2026. Maryland's $100 registration fee is payable on top of each row and is not part of these totals.

How the grades were set

Biz Formation Report grades three-year bill and what the money buys at 32% each, leaving 36% for renewal handling, local rules match and pricing openness. In Maryland, what the money buys settled the order.

Foreign registration always involves two states, and one provider with one price in both graded best on coverage, ahead of MD Registered Agent.org.

Every criterion and weight is listed on How we rank.

Maryland foreign LLC registration: fee, document and filing office

To register, the outside company submits the Limited Liability Company Registration (For non-Maryland Limited Liability Company) to the Maryland State Department of Assessments and Taxation (SDAT), Charter Division, with a state fee of $100. Maryland also wants written proof of existence from the home state, equivalent to a certificate of good standing, dated within 60 days of the filing.

After registration the company owes the Business Entity Annual Report and Personal Property Return, Form 1 ($300), due April 15.

Documents to have on hand

  • Written proof of existence from the home state, equivalent to a certificate of good standing, dated within 60 days of filing.
  • The legal name as recorded in the home state, and the date of formation.
  • An in-state resident agent; any provider in this report can serve.
  • Payment of the $100 state fee with the filing.
  • The due date of the Business Entity Annual Report and Personal Property Return, Form 1 and its $300 fee, noted in your calendar.

The cost of skipping Maryland registration

An unregistered foreign LLC has no right to sue in Maryland courts until it registers (4A-1007(a)). Its contracts remain enforceable (4A-1007(b)).

Maryland foreign registration service: common questions

Must an LLC from another state register with Maryland?

Yes, as soon as it transacts business there. Until then it has no standing to bring a lawsuit in the state's courts.

How much does Maryland foreign registration cost?

$100 goes to the state and $199 to the service.

Does Maryland demand proof of good standing from the home state?

Yes. The filing needs written proof of existence from the home state, equivalent to a certificate of good standing, issued no more than 60 days ago.

Is a resident agent still needed after foreign registration?

Yes. A resident agent with a street address in the state has to remain on file.

Which foreign registration services does this report rank?

Mainstay Filing ($199), MD Registered Agent.org ($199) and Maryland Registered Agent.co ($199), in descending order of grade.

What is the best foreign registration service for Maryland?

Mainstay Filing: $199 added to the state fee in any state, with a year of resident agent service included.

Source notes

  1. Maryland State Department of Assessments and Taxation (verified August 2026)
  2. Maryland State Department of Assessments and Taxation (verified August 2026)
  3. Maryland report due date (verified August 2026)
  4. Md. Code, Corporations & Associations sec. 4A-202 (verified August 2026)
  5. Maryland formation fee: Filing fee, official source (verified October 2026)
  6. Maryland formation fee: Filing fee, official source (verified October 2026)
  7. Maryland registered agent statute) (verified October 2026)
  8. Maryland Business Express (verified October 2026)
  9. Corporations and Associations § 4A-1002, registration (verified October 2026)
  10. Corporations and Associations § 4A-1009, activities that are not doing business (verified October 2026)
  11. Corporations and Associations § 4A-1007, effect of not registering (verified October 2026)
  12. Tax-Property § 11-101, annual report (verified October 2026)
  13. Pulled November 12, 2026: Mainstay Filing, Maryland service page
  14. Pulled November 12, 2026: MD Registered Agent.org, pricing and service pages
  15. Pulled November 12, 2026: Maryland Registered Agent.co, pricing and service pages