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Straight talk · Massachusetts

3 Best Foreign Registration Services in Massachusetts (2026): Our Honest Take

Our 2026 favorites for foreign registration services in Massachusetts are Mainstay Filing ($199), MA Registered Agent.org ($199) and Massachusetts Registered Agent.co ($199), best first. The state's fee is $500; service fees for three years are $397 to $497.
From the LLC Plainly editorial team

The gist

You pay the state
$500
Proof of good standing?
Yes, attach it (90 days maximum)
Later on
$500, Foreign LLC annual report
Who we like
Mainstay Filing, MA Registered Agent.org then Massachusetts Registered Agent.co

Our favorites in Massachusetts

The order comes from our five checks: three-year cost first, then how much the price covers.
Our favorite

1. Mainstay Filing: best for LLCs expanding state by state

Registration is $199 plus the state fee, and the agent is $149 later

Why Mainstay Filing? Honestly, you pay $199 plus Massachusetts's fee, skip the resident agent charge in year one and then pay $149 a year.

That $100 gap to MA Registered Agent.org over three years is what coverage in every state costs.

The resident agent costs nothing the first year. After that it's $149 a year, in any state.

Your money buys

  • The registration filing
  • A flat nationwide fee

The good

  • Pay $199 above the state fee
  • It's the same fee in every state

Trade-offs

  • The renewal lands $50 over MA Registered Agent.org
Massachusetts specialist

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

Registration is $199 plus the state fee, and the agent is $99 later

Number 2 is MA Registered Agent.org: $199 over the state fee gets you registered, and renewals run $99.

Your money buys

  • Your Massachusetts registration, filed
  • A year of agent service to start

The good

  • Agent covered in year one
  • The agent renews at $99
  • Starts at $199 plus the state fee

Trade-offs

  • Nothing outside this state
Massachusetts specialist

3. Massachusetts Registered Agent.co: best for a second in-state option

Registration is $199 plus the state fee, and the agent is $99 later

Number 3 is Massachusetts Registered Agent.co: $199 over the state fee gets you registered, and renewals run $99.

MA Registered Agent.org charges the same, which makes this nearly a tie.

Your money buys

  • Your Massachusetts registration, filed
  • A year of agent service to start

The good

  • Agent covered in year one
  • The agent renews at $99
  • Starts at $199 plus the state fee

Trade-offs

  • Nothing outside this state

How they compare

#CompanyFirst yearRenewalThree-year totalWhat you get
1Mainstay Filing$199$149/yr$497the registration filing; A flat nationwide feeCheck out Mainstay FilingPartner link. We may earn money if you buy.
2MA Registered Agent.org$199$99/yr$397Your Massachusetts registration, filed; A year of agent service to startCheck out MA Registered Agent.orgPartner link. We may earn money if you buy.
3Massachusetts Registered Agent.co$199$99/yr$397Your Massachusetts registration, filed; A year of agent service to startCheck out Massachusetts Registered Agent.coPartner link. We may earn money if you buy.
Prices as of November 13, 2026. Your state's own fees are in the checklist below.

The questions, one by one

At what point do I register?

Register first, then do business in Massachusetts, if your LLC came from another state.

Not registering can cost you its access to Massachusetts courts as a plaintiff is cut off (G.L. c. 156C, 54(a)).

sec.state.ma.us, last seen October 2026

How much should I put aside to register?

State fee $500; service $199 extra.

Three years of state charges: $1,500. sec.state.ma.us, last seen October 2026

What's the application called?

You file the Foreign Limited Liability Company Application for Registration (General Laws Chapter 156C, Section 48) with the Massachusetts Secretary of the Commonwealth, Corporations Division. That's the whole filing.

Include certificate of legal existence or good standing issued within the last 90 days.

What do I owe after registering?

Foreign LLC annual report, and the cost is $500.

The due date reads: anniversary of registration.

Why is the list in this order?

It's work taken off your hands (31% of the score), and Mainstay Filing does best there.

We start with cost across three years, move to work taken off your hands, and finish with three smaller checks.

Your home state wants an agent too, and one account for both states is easier.

Our method, in full

Massachusetts requirements, with sources

The ruleAmount or ruleOfficial source
Application fee$500sec.state.ma.us, last seen October 2026
Home-state certificateYes, attach it, 90 dayssec.state.ma.us, last seen October 2026
Foreign LLC annual report$500sec.state.ma.us, last seen October 2026
State fees, years one to three$1,500Sum of the figures above
Each figure above links to the state's official page. The final line is our addition of the filing, two reports and any minimum tax, and it leaves out variable costs.

Also worth knowing

What about my home state?

You do. Two states mean two sets of rules, and a one-state company stops at its border while Mainstay Filing keeps going.

What's each pick's bill across three years?

Three-year totals are Mainstay Filing, $497; MA Registered Agent.org, $397; Massachusetts Registered Agent.co, $397, and state fees are separate.

Can I check these fees?

Official Massachusetts sources on the state side and company pricing on the service side, all dated.

Do I need to hire a service?

It's your call. You can file on your own if you meet the rules on this page.

Will a company file this for me?

Yes, because filing is what these companies sell, and the state fee stays put.

Which foreign registration service would you hire in Massachusetts?

Start with Mainstay Filing, followed by MA Registered Agent.org and Massachusetts Registered Agent.co.

Sources, with dates

  1. Massachusetts Secretary of the Commonwealth (sec.state.ma.us), last confirmed August 2026
  2. Massachusetts Secretary of the Commonwealth (malegislature.gov), last confirmed August 2026
  3. M.G.L. c. 156C, sec. 12 (sec.state.ma.us), last confirmed August 2026
  4. Massachusetts formation fee: Filing fee (sec.state.ma.us), last confirmed October 2026
  5. Massachusetts formation fee: Filing fee (sec.state.ma.us), last confirmed October 2026
  6. Massachusetts registered agent statute (sec.state.ma.us), last confirmed October 2026
  7. Massachusetts Corporations Division, foreign LLC (sec.state.ma.us), last confirmed October 2026
  8. G.L. c. 156C § 48 (malegislature.gov), last confirmed October 2026
  9. G.L. c. 156C § 54 (malegislature.gov), last confirmed October 2026
  10. G.L. c. 156D § 15.01 (malegislature.gov), last confirmed October 2026
  11. Mainstay Filing Massachusetts service page, read November 13, 2026
  12. MA Registered Agent.org pricing page, read November 13, 2026
  13. Massachusetts Registered Agent.co pricing page, read November 13, 2026