Massachusetts LLCs must keep a resident agent with a Massachusetts street address, and a post office address is not enough. Changing that agent is free when you file the LLC Statement of Change of Resident Agent/Resident Office online with the Secretary of the Commonwealth; the same filing costs $25 by mail or in person, as of October 2026. The agent can be a Massachusetts resident, a domestic corporation, or a corporation or other business entity authorized to do business in the Commonwealth.
With formation and annual report fees of $500 each, Massachusetts is an expensive state to run an LLC in, and the agent fee is a small part of the total. Our recommendation for most owners is Mainstay Filing at $149 a year.
Updated October 2026.
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Best Registered Agents in Massachusetts (2026)
Comparing services for registered agent service in Massachusetts? Start with this ranked shortlist; details for each pick follow the table.
| Rank | Provider | Best for | Price | What’s included |
|---|---|---|---|---|
| 1 | Mainstay Filing | Registered agent service with a flat renewal price | $149/year (renews at $149) | Registered agent service in all 50 states; switching from another agent included (state change fee at cost) |
| 2 | MA Registered Agent.org | Massachusetts registered agent service only | $99/year | $99 per year, flat; in-state street address for the registered office; legal documents served on the company are scanned and sent to the owner online |
| 3 | Massachusetts Registered Agent.co | Massachusetts registered agent service only | $99/year | in-state street address for the registered office; legal documents served on the company are scanned and sent to the owner online |
1. Mainstay Filing
Mainstay Filing is our top pick in Massachusetts. It costs $149/year (renews at $149) and covers registered agent service in all 50 states; switching from another agent included (state change fee at cost). The price stays the same every year, with no add-on menu.
2. MA Registered Agent.org
MA Registered Agent.org is a Massachusetts registered agent service at $99/year. It provides $99 per year, flat; in-state street address for the registered office; legal documents served on the company are scanned and sent to the owner online. It’s a fit if you only need a registered agent rather than full formation help.
3. Massachusetts Registered Agent.co
Massachusetts Registered Agent.co is a Massachusetts registered agent service at $99/year. It provides in-state street address for the registered office; legal documents served on the company are scanned and sent to the owner online. It’s a fit if you only need a registered agent rather than full formation help.
Massachusetts resident agent essentials
| Topic | Massachusetts (October 2026) |
|---|---|
| Official term | Resident agent |
| Who can serve | A Massachusetts resident; a domestic corporation; a foreign corporation or other business entity authorized in Massachusetts |
| Address | Street address in Massachusetts; a post office address is not sufficient |
| Change of resident agent/office | $0 online, $25 by mail or in person, $30 by fax (fee schedule) |
| Certificate of Organization | $500 by mail, $520 online |
| Annual report | $500 by mail, $520 online, due by the anniversary date |
| Filing office | Secretary of the Commonwealth, Corporations Division |
What does a Massachusetts resident agent do?
The resident agent is the person or company authorized to receive service of process for your LLC. When a lawsuit is filed against a Massachusetts LLC, it is delivered to the resident agent at the office address on record with the Corporations Division.
That record is public in the Corporations Division business search. Massachusetts LLCs must also maintain an office in the Commonwealth where certain company records are kept, which is a separate requirement from the resident agent’s address.
Who can be a resident agent in Massachusetts?
M.G.L. chapter 156C, section 5 requires every LLC to maintain a resident agent for service of process, and the Corporations Division’s regulations at 950 CMR 112.13 fill in the details. The resident agent can be:
- An individual who resides in Massachusetts and is at least 18.
- A domestic corporation.
- A foreign corporation authorized to do business in Massachusetts.
- Another domestic or foreign business entity authorized by law and qualified to do business in Massachusetts, under 950 CMR 112.13.
The regulation is direct about the address: “The office address of the resident agent must be a street address. A post office address is not sufficient.” The agent should be available at that address during normal business hours.
An owner or member who lives in Massachusetts can serve as the LLC’s resident agent personally.
What does it cost to change a resident agent in Massachusetts?
Filing the Limited Liability Company Statement of Change of Resident Agent/Resident Office is free online, according to the Corporations Division’s fee schedule. Filing the same statement by mail or in person costs $25, and by fax $30.
| How you file | State fee |
|---|---|
| Online | $0 |
| Mail or walk-in | $25 |
| Fax | $30 |
The online route is both the cheapest and the simplest, so there is rarely a reason to file on paper. Online filing uses your entity’s Customer ID and PIN from the Corporations Division.
Steps to change your Massachusetts resident agent
- Choose the new resident agent and confirm its Massachusetts street address.
- Get your Customer ID and PIN for online filing from the Corporations Division, if you do not already have them.
- File the Statement of Change of Resident Agent/Resident Office online, entering the new agent’s name and street address.
- Sign as an authorized person for the LLC.
- Submit. There is no fee online.
- Confirm the update in the business search and notify your old agent.
If you prefer paper, download the statement from the Corporations Division and mail it with the $25 fee.
Should you be your own resident agent in Massachusetts?
A Massachusetts resident can serve as the resident agent for their own LLC. Here is how that compares with hiring a service.
Serving yourself makes sense if
- You live in Massachusetts and run the business from a fixed office.
- You are comfortable with your street address in the public record.
- You want to avoid another recurring cost on top of the $500 annual report.
A commercial agent makes sense if
- You live in New Hampshire, Rhode Island or elsewhere outside Massachusetts.
- You work from home and want your home address kept off the record.
- You travel often or keep irregular hours.
- You plan to register the LLC in other states and want one provider for all of them.
Weighing the cost in a $500-a-year state
Massachusetts owners already pay $500 or more each year just to keep an LLC active, so it is natural to look for savings in the resident agent line. Serving yourself does save the agent fee, but it shifts the risk of a missed lawsuit onto you. A default judgment, entered because papers went unanswered, can cost far more than years of agent service.
A sensible approach is to serve yourself only if you have a staffed Massachusetts office where someone is always present on weekdays. Otherwise, a commercial resident agent is a modest addition to costs you are already paying, and the free online change means you can switch later without a filing fee.
Massachusetts annual reports and next steps
Massachusetts LLCs file an annual report on or before the anniversary of the date their Certificate of Organization was filed. The fee is $500 on paper or $520 online, which makes it one of the highest in the country. The Corporations Division can administratively dissolve an LLC that fails to file. See the Division’s LLC filing page for forms.
Forming a new LLC? The Certificate of Organization costs $500 by mail. Our guides to starting an LLC in Massachusetts and starting a business in Massachusetts cover the steps, and the Massachusetts business name search guide shows how to check a name.
FAQs
Is it free to change a resident agent in Massachusetts?
Yes, online. The Secretary of the Commonwealth’s Corporations Division charges nothing for an LLC Statement of Change of Resident Agent/Resident Office filed online. The same statement costs $25 by mail or in person, or $30 by fax, as of October 2026.
Who can be a resident agent in Massachusetts?
Under M.G.L. c. 156C, sec. 5 and 950 CMR 112.13, the resident agent can be a Massachusetts resident, a domestic corporation, a foreign corporation authorized in Massachusetts, or another business entity authorized by law and qualified to do business in the Commonwealth.
Can I use a P.O. box for my Massachusetts resident agent?
No. The Corporations Division’s regulation states that the office address of the resident agent must be a street address and that a post office address is not sufficient. The agent should be available there during normal business hours to accept legal papers.
Can I be my own resident agent in Massachusetts?
Yes, if you live in Massachusetts and can use a Massachusetts street address. Your address becomes part of the public record, and you need to be available to receive service. Owners who live outside Massachusetts must appoint a resident individual or a qualifying business entity instead.
How much is the Massachusetts LLC annual report?
The Massachusetts LLC annual report costs $500 on paper or $520 online, and it is due on or before the anniversary of the date the Certificate of Organization was filed. An LLC that does not file can be administratively dissolved.
Why does Massachusetts say resident agent instead of registered agent?
Massachusetts law uses the term resident agent for the person or company that receives service of process for an LLC. The role is the same as a registered agent in other states; only the name differs, and you will see it on all Massachusetts LLC forms.
What is the best registered agent in Massachusetts?
Our recommendation is Mainstay Filing at $149 per year, with the same price at renewal and the agent change handled for you. MA Registered Agent.org is an alternative at a flat $99 per year with an in-state street address and online access to scanned documents.
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