Skip to content
LLC Q and AOne question, one reply, one source.

Short reply · South Carolina

3 Best Foreign Registration Services in South Carolina (2026), Ranked

Best foreign registration services in South Carolina for 2026: SC Registered Agent.org ($199), Mainstay Filing ($199) and South Carolina Registered Agent.co ($199), ranked in that order. Registering costs $110 at South Carolina, whoever files, plus $397 to $497 to a service over three years.

LLC Q and A editorial team ·

Quick answers

Fee to the state
$110
Certificate required?
Yes (30 days max age)
After registering
None
Pick
SC Registered Agent.org, Mainstay Filing then South Carolina Registered Agent.co

Best in South Carolina, in order

Prices come from each company's own page. See the method.
1#1 pick

1. SC Registered Agent.org: best for one extra state

$199 plus state fee, then $99/yr

#1 in South Carolina: SC Registered Agent.org, because it charges $199 with first-year agent service included, then $99 annually.

Lower three-year cost than Mainstay Filing, and cost is the heaviest criterion.

Price covers

  • South Carolina registration filing
  • First-year agent included

For

  • $99/yr from year two
  • Year-one agent included
  • $199 over the state fee

Against

  • South Carolina only; home state needs another agent
Go to SC Registered Agent.orgPartner link. We may earn money if you buy.
2All fifty states

2. Mainstay Filing: best for registering in several states

$199 plus state fee, then $149/yr

Why Mainstay Filing is second: $199 in every state, with the first registered agent year included.

Ranked lower because three years cost $100 more than SC Registered Agent.org, and cost has the biggest weight.

After the free year, the registered agent is $149 a year.

Price covers

  • Registration filing
  • Same price in any state

For

  • $199 over the state fee
  • Same fee in every state

Against

  • SC Registered Agent.org renews its agent $50 lower
Go to Mainstay FilingPartner link. We may earn money if you buy.
3South Carolina only

3. South Carolina Registered Agent.co: best for another local option

$199 plus state fee, then $99/yr

South Carolina Registered Agent.co ranks third since it charges $199 with first-year agent service included, then $99 annually.

Same published prices as SC Registered Agent.org, so the order between them is close.

Price covers

  • South Carolina registration filing
  • First-year agent included

For

  • $99/yr from year two
  • Year-one agent included
  • $199 over the state fee

Against

  • South Carolina only; home state needs another agent
Go to South Carolina Registered Agent.coPartner link. We may earn money if you buy.

Comparison

#CompanyFirst yearRenewalTotal, 3 yearsIncludes
1SC Registered Agent.org$199$99/yr$397South Carolina registration filing; First-year agent includedGo to SC Registered Agent.orgPartner link. We may earn money if you buy.
2Mainstay Filing$199$149/yr$497registration filing; same price in any stateGo to Mainstay FilingPartner link. We may earn money if you buy.
3South Carolina Registered Agent.co$199$99/yr$397South Carolina registration filing; First-year agent includedGo to South Carolina Registered Agent.coPartner link. We may earn money if you buy.
Service fees only, from company price pages read November 13, 2026. State fees are identical for every pick.

Questions and replies

Must my LLC register here?

Register with the South Carolina Secretary of State first; do business in South Carolina second.

Unregistered, an LLC may face South Carolina courts will not take its claims (S.C. Code 33-44-1008(a)).

source of record: dor.sc.gov, confirmed October 2026

Cost to register?

$110 at the state. A service adds $199.

State fees reach $110 over three years, counting any recurring report. source of record: dor.sc.gov, confirmed October 2026

Which form, filed where?

Registration goes through the Application for a Certificate of Authority by a Foreign Limited Liability Company (Form F0008), handled by the South Carolina Secretary of State.

Attach certificate of existence from the home-state Secretary of State no more than 30 days.

Any recurring filing?

Nothing repeats after registration.

Why this order?

Three-year price (36%) goes to SC Registered Agent.org.

Five criteria: three-year price (36%), chores removed from your list (26%), price shown up front (15%), year-two bill (12%) and states served (11%).

SC Registered Agent.org wins on cost: $397, a $100 saving over Mainstay Filing.

The five criteria

What South Carolina requires of a foreign LLC

ItemRule or amountSource
Registration fee$110source of record: dor.sc.gov, confirmed October 2026
Good standing certificateYes, 30 dayssource of record: dor.sc.gov, confirmed October 2026
Three-year state total$110Total of the rows above
Three-year total = filing + report in year 2 + report in year 3 + minimum tax (if any). Fees without a fixed amount, like newspaper notices, are not summed.

More replies

Is an agent needed at home too?

Yes: two states, two rule sets. Mainstay Filing works in both; one-state services do not.

What do the picks cost over three years?

SC Registered Agent.org totals $397 and Mainstay Filing totals $497 and South Carolina Registered Agent.co totals $397, with state fees on top.

Where do the numbers come from?

State fees come from South Carolina's official documents. Service prices come from each company's price page. Both are dated here.

Do I have to hire one?

No. Owners can file directly. A service saves time and can act as agent.

Does a service file it?

All of them do; only the service fee differs.

Who ranks first in South Carolina?

SC Registered Agent.org, because its service fees reach $397 over three years. Then Mainstay Filing and South Carolina Registered Agent.co.

Source list

  1. Q and A source note covering S.C, found at scstatehouse.gov and dated August 2026, kept on file
  2. Q and A source note covering South Carolina Business Entities Online, found at businessfilings.sc.gov and dated October 2026, kept on file
  3. Q and A source note covering SC Secretary of State, business, found at sos.sc.gov and dated October 2026, kept on file
  4. Q and A source note covering SC Department of Revenue, corporate, found at dor.sc.gov and dated October 2026, kept on file
  5. Q and A source note covering S.C, found at scstatehouse.gov and dated November 2026, kept on file
  6. Price page: SC Registered Agent.org pricing page, accessed November 13, 2026
  7. Price page: Mainstay Filing South Carolina service page, accessed November 13, 2026
  8. Price page: South Carolina Registered Agent.co pricing page, accessed November 13, 2026