South Carolina Registered Agent Primer (2026): 6 Moves and the 3 Best Agents
Best picks for appointing a registered agent in South Carolina in 2026, in order: Mainstay Filing ($149 a year), South Carolina Registered Agent.co ($99 a year) and SC Registered Agent.org ($99 a year). Make the 6 moves below and your registered agent is set up properly.
From the Founder Primer desk
Need to know
Registered agent required?
Yes
Check it yourself at scstatehouse.gov; we read it in October 2026
What our picks charge
$99 to $149 a year
From each company's pricing page
Moves in this primer
6
One at a time
Primer goals
Why South Carolina wants an agent on file
The address and eligibility rules
Recording the agent
How the agents compare
South Carolina: services we rank
Marked on the scoring page: three-year cost (27%), to-dos cleared (38%), renewal, fit with South Carolina's rules and readable pricing.
Best overall$149 yearly, then $149
1. Mainstay Filing: best for founders planning to grow
Mainstay Filing gets the top mark in South Carolina: the agent is $149 a year in every state.
The three-year premium over South Carolina Registered Agent.co is $150; the 38% weight on to-dos cleared outweighs it.
Inside the price
A street address for the registered office
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; renews at $149
One vendor everywhere
Against it
South Carolina Registered Agent.co costs $50 less a year
Agent-only plan, so no report filing
South Carolina focus$99 yearly, then $99
2. South Carolina Registered Agent.co: best for founders based in the state
Number 2 is South Carolina Registered Agent.co, where an in-state street address for the registered office, $99 a year.
Inside the price
A South Carolina street address
Served papers scanned into your account
In its favor
Under Mainstay Filing on price
$99; renews at $99
Against it
Another state needs another agent
South Carolina focus$99 yearly, then $99
3. SC Registered Agent.org: best for staying in one state
Number 3 is SC Registered Agent.org, where an in-state street address for the registered office, $99 a year.
South Carolina Registered Agent.co and this service charge alike.
Posted prices, read November 13, 2026. The state bills the same whichever agent you name.
The primer, move by move
Move 1
What South Carolina requires
Every LLC must name a registered agent with an in-state street address.
Where this comes from: Check it yourself at scstatehouse.gov; we read it in October 2026
Move 2
Who is allowed to act
A South Carolina resident, a South Carolina corporation, another LLC, or a corporation or company from another state authorized to do business in South Carolina. (S.C. Code § 33-44-108)
Move 3
Registered office rule
The address has to be a street address in South Carolina for the agent, stated in the articles. P.O. boxes are not accepted.
A service provides a South Carolina street address, so yours stays off the record.
A new LLC names its agent on the Articles of Organization, filed with the South Carolina Secretary of State. An LLC that changes agents files an amendment there.
Where this comes from: Check it yourself at scstatehouse.gov; we read it in October 2026
Move 6
Update when things change
No report means one job: keep the registered agent appointment current.
Agent and state costs
Move
Payee
Price
Agent service
Service
$99 to $149 a year
Each later year
Service
$99 to $149 a year
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.
How the marks came out
To-dos the price takes off you decided first place in South Carolina. It is 38% of the mark; the rest is founder outlay over three years, year-two price, fit with the state's rules and pricing you can read at once.
Reach put it ahead of South Carolina Registered Agent.co.
What founders ask
Do South Carolina 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?
Yes, if you pass the eligibility and address tests in moves 2 and 3.
Can I change my registered agent later?
Change whenever you like through the South Carolina Secretary of State, as move 5 describes.
What does a registered agent cost in South Carolina?
$99 to $149 per year for the agents listed.
What does the LLC pay the state each year?
No yearly report fee.
Which registered agent would you choose?
Pick Mainstay Filing: $149 a year, $149 when it renews, same plan in all fifty states. Behind it: South Carolina Registered Agent.co and SC Registered Agent.org.