Mississippi Registered Agent Primer (2026): 6 Moves and the 3 Best Agents
If you are hiring for appointing a registered agent in Mississippi in 2026, we rank Registered Agent MS.org ($99 a year), Mainstay Filing ($149 a year) and Mississippi Registered Agent.co ($99 a year), in that order. 6 quick moves take you from the law to a correct agent filing.
From the Founder Primer desk
Key facts
The requirement
Yes
Check it yourself at sos.ms.gov; we read it in October 2026
Yearly cost of our picks
$99 to $149 a year
Published rates
Annual report
No fee
Check it yourself at sos.ms.gov; we read it in October 2026
Primer moves
6
Each one explained
Primer goals
What Mississippi requires of a registered agent
The address and eligibility rules
Getting the agent filed
The agents we rank
Mississippi: services we rank
Five published criteria set the order; read them on how we score.
Our pick$99/yr, renewal $99
1. Registered Agent MS.org: best for single-state companies
Registered Agent MS.org leads the list, since $99 a year, flat at renewal, built for an LLC that stays in the state.
A lower three-year cost than Mainstay Filing puts it first; cost is worth 27%.
Inside the price
An in-state office address
Scans of papers served on the LLC
In its favor
$99 yearly
Costs less a year than Mainstay Filing
Against it
No help in other states
No help with the annual report
All fifty states$149/yr, renewal $149
2. Mainstay Filing: best for LLCs that may add states
Mainstay Filing takes second; a flat $149 a year, whatever state the LLC is in.
Over three years it sits $150 behind Registered Agent MS.org.
Inside the price
A Mississippi street address on file
Served papers scanned free, the same business day
Three government letters a year scanned at no charge
Also serves nonprofits, corporations, LPs and LLPs
In its favor
$149 yearly, no increase
One vendor everywhere
Against it
$50 a year over Registered Agent MS.org
You still file reports yourself
Mississippi specialist$99/yr, renewal $99
3. Mississippi Registered Agent.co: best for a local backup
Mississippi Registered Agent.co takes third; $99 a year, flat at renewal, built for an LLC that stays in the state.
It lists the same prices as Registered Agent MS.org.
Company prices as listed on November 13, 2026. Mississippi charges the same either way.
The moves
Move 1
Rule first
Every LLC must name a registered agent with an in-state street address.
Where this comes from: Check it yourself at sos.ms.gov; we read it in October 2026
Move 2
Who may serve
Any individual, corporation or LLC with a physical address in Mississippi. Agents that serve for hire register with the Secretary of State as commercial agents. Statute: Miss. Code Ann. § 79-29-113.
Move 3
Use an address that qualifies
The address has to be a physical Mississippi street address that is the agent's business office. P.O. boxes are not accepted.
Every pick supplies the Mississippi office address.
Move 4
Serve yourself or hire one
Our recommended agents charge $99 to $149 a year; serving yourself works for those who qualify.
Move 5
File the agent's details
The Certificate of Formation (Form F0100) carries the agent's name and address. the Mississippi Secretary of State also takes change filings from LLCs that swap agents.
Where this comes from: Check it yourself at sos.ms.gov; we read it in August 2026
Move 6
Recheck every year
Your agent's details are confirmed annually on the annual report, due April 15.
Where this comes from: Check it yourself at sos.ms.gov; we read it in October 2026
What you will pay
Move
Pay to
Figure
Registered agent service
The provider
$99 to $149 a year
Renewing the agent
The provider
$99 to $149 a year
Annual report
To the state
No fee
We get the three-year state number by adding the filing, the reports due in years two and three and any yearly minimum tax. Service fees stay separate.
Why this order
The deciding criterion: founder outlay over three years, at 27% of the mark.
Registered Agent MS.org totals $297 across three years, saving $150 next to Mainstay Filing.
Mississippi questions
Do Mississippi LLCs need a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
Can I be my own registered agent?
Often. Run the two tests in moves 2 and 3.
Can I change my registered agent later?
Change whenever you like through the Mississippi Secretary of State, as move 5 describes.
What does a registered agent cost in Mississippi?
$99 to $149 per year for the agents listed.
What does the LLC pay the state each year?
Mainly the annual report, no fee.
Which registered agent would you choose?
Registered Agent MS.org, Mainstay Filing and Mississippi Registered Agent.co, best mark first.