3 Best Registered Agents in South Dakota (2026), Ranked
Who should you hire in South Dakota for registered agents in 2026: we say South Dakota Registered Agent.co ($99 a year), Mainstay Filing ($149 a year) and SD Registered Agent.org ($99 a year), ranked best first. An agent costs $99 to $149 in year one and $297 to $447 over three years.
By the LLC Answered editorial team
The brief reply
Short reply
Required by law?
Yes: the state demands it
Title in the statute
Registered agent
Service price
$99 to $149 annually
Best first
South Dakota Registered Agent.co, Mainstay Filing then SD Registered Agent.org
office address inside the state; up to three official mailings a year scanned for you; Also serves corporations, LPs, LLPs and nonprofits, not only LLCs
Read November 13, 2026 from company pricing; three years = year one plus two renewals.
Questions and replies
Will the state insist on a registered agent?
Every LLC must name a registered agent with an in-state street address.
Statute behind it: SDCL 59-11-6. see sdlegislature.gov, as of October 2026, state page
Who does the state allow?
A commercial registered agent listed with the state, a noncommercial agent (an individual or entity with a South Dakota address), or the title of an office in the company.
An owner who qualifies can serve at no cost.
How much does an agent charge?
Count on $99 to $149 a year, $297 to $447 over three.
Whoever you name, the state fees stay the same.
What is the agent's function?
It serves as the LLC's South Dakota mailing point for court papers and state letters.
The quality of an agent shows in its forwarding, so ask how documents reach you. Read: service of process
What else is due annually?
Set aside $55 each year for the annual report. Mark the state's date, due during the entity's anniversary month, on your calendar.