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Foreign registration cost calculators + South Carolina

3 Best Foreign Registration Services in South Carolina (2026): Cost Calculator

Run for 2026, the foreign registration services in South Carolina that come out best are South Carolina Registered Agent.co ($199), SC Registered Agent.org ($199) and Mainstay Filing ($199), in that order. Input one is the state's $110. Input two, the services, comes to $397 to $497 over three years.
Calculated by the Formation Calc editorial team

Result order: Formula: 41% cost, 27% coverage, three lesser terms. Details

South Carolina results

Registration fee owed to the state$110dor.sc.gov {input read October 2026, shown in full}
What year one calculates to$199Service side only
What three years calculate to$397 to $497Opening input plus two more
State side through year 3$110Independent of the service
Totals cross atDoes not occurOrder never flips

Ranked results

Results sit in value order, with inputs taken from company pages. The $110 state fee stays outside the service prices.
1

1. South Carolina Registered Agent.co: best for the smallest agent figure

Ranks first
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 plus the state's fee, then $99 yearly

For South Carolina, South Carolina Registered Agent.co is the best value since total service fees reach $397 after three years.

Its three-year result is below Mainstay Filing's, and three-year cost is 41% of the formula.

Inputs covered

  • Registration completed for you
  • Agent service for the first year

Adds up well

  • Year-one agent covered
  • Service fee of $199
  • $99 a year for the agent after that

Adds up badly

  • A second provider is needed at home
2

2. SC Registered Agent.org: best for a nearby provider

South Carolina only
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 plus the state's fee, then $99 yearly

Result 2: SC Registered Agent.org. Total service fees reach $397 after three years.

No difference in price from South Carolina Registered Agent.co.

Inputs covered

  • Registration completed for you
  • Agent service for the first year

Adds up well

  • Year-one agent covered
  • Service fee of $199
  • $99 a year for the agent after that

Adds up badly

  • A second provider is needed at home
3

3. Mainstay Filing: best for LLCs still growing

Most work covered
Year-1 input$199
Input for year 2 on$149/yr
Result at year 3$497
$199 plus the state's fee, then $149 yearly

Result 3: Mainstay Filing. $199 added to the state fee, the first registered agent year at zero, then $149 yearly.

South Carolina Registered Agent.co calculates $100 lower over three years, enough to rank higher.

Agent renewal, any state: $149 yearly.

Inputs covered

  • The foreign registration filing
  • Good in all fifty states

Adds up well

  • $199 above the state fee
  • Helpful if another state follows

Adds up badly

  • Agent renews at $149, $50 above South Carolina Registered Agent.co

What each service adds up to

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1South Carolina Registered Agent.co$199$298$397$595Open South Carolina Registered Agent.coPartner link. We may earn money if you buy.
2SC Registered Agent.org$199$298$397$595Open SC Registered Agent.orgPartner link. We may earn money if you buy.
3Mainstay Filing$199$348$497$795Open Mainstay FilingPartner link. We may earn money if you buy.
Service fees only, calculated from each company's prices as of November 13, 2026. Ranked by running result, the order is steady for ten years.

Break-even test

Enter a number of years and the calculator recomputes each service's running total.
Output for 3 years: South Carolina Registered Agent.co $397, SC Registered Agent.org $397, Mainstay Filing $497. Least paid: South Carolina Registered Agent.co.

The government inputs, South Carolina

InputAmountSource
Registration filing$110dor.sc.gov {input read October 2026, shown in full}
What the state collects by year 3$110Our sum
Three years of state charges mean one filing, two reports and any yearly minimum tax. Publication and similar costs are noted separately.

The working behind South Carolina

Weight 41%: calculated three-year cost. That term separated the top two.

Three years with South Carolina Registered Agent.co sum to $397, a result $100 better than Mainstay Filing.

How South Carolina describes the foreign LLC registration fee and rules

A company from another state that works in South Carolina registers with the South Carolina Secretary of State using the Application for a Certificate of Authority by a Foreign Limited Liability Company (Form F0008) and $110. It also takes certificate of existence from the home-state Secretary of State at most 30 days.

An unregistered LLC can face dismissal of its own claims in South Carolina courts (S.C. Code 33-44-1008(a)).

Official text: dor.sc.gov {input read October 2026, shown in full}

State fees only

Do-it-yourself result: $110 paid to the state across three years. A service at $397 to $497 is what avoiding the forms costs.

Common questions

What is the registration fee for a foreign LLC in South Carolina?

$110 as the official fee, not counting a service fee of $199.

What do these services calculate to over three years?

Anywhere from $397 to $497 for three years of service.

Which form registers the LLC?

Complete Application for a Certificate of Authority by a Foreign Limited Liability Company (Form F0008) and deliver it to the South Carolina Secretary of State.

Does the South Carolina filing need a document from the home state?

Yes, one less than 30 days old: certificate of existence from the home-state Secretary of State.

What recurring filing follows registration?

Nothing. Foreign LLCs have no recurring report here.

When does one service pass another in total cost?

The results do not cross in the first ten years.

Which foreign registration service calculates best for South Carolina?

South Carolina Registered Agent.co, which wins on calculated three-year cost. SC Registered Agent.org and Mainstay Filing follow.

Input sources

  1. Input for S.C comes from scstatehouse.gov, entered August 2026.
  2. Input for South Carolina Business Entities Online comes from businessfilings.sc.gov, entered October 2026.
  3. Input for SC Secretary of State, business comes from sos.sc.gov, entered October 2026.
  4. Input for SC Department of Revenue, corporate comes from dor.sc.gov, entered October 2026.
  5. Input for S.C comes from scstatehouse.gov, entered November 2026.
  6. November 13, 2026 entry: South Carolina Registered Agent.co pricing page
  7. November 13, 2026 entry: SC Registered Agent.org pricing page
  8. November 13, 2026 entry: Mainstay Filing South Carolina service page