Registered agent guide · South Dakota

South Dakota Registered Agent Route (2026): Rules, State Fees and the 3 Best Agents

For a registered agent in South Dakota, our 2026 routing puts Mainstay Filing ($149 a year), SD Registered Agent.org ($99 a year) and South Dakota Registered Agent.co ($99 a year) in that order. South Dakota sets a registered agent as a requirement of the road. State tolls that recur come to $55 a year, placing it 30th of 50.

Surveyed by the Filing Mapper team

Updated November 12, 2026

Tolls on the South Dakota route

30th

of fifty by yearly state tolls

Counted from the lightest toll up. Compare the neighbors

Registered agent required: Yes; Survey of sdlegislature.gov, October 2026
Annual report: $55 / yr; The checkpoint closes, in the state's words: due during the entity's anniversary month. Survey of sdlegislature.gov, October 2026
State toll, one year: $55; Recurring tolls, shown for one lap

Who walks the South Dakota route for you

The order rests on five criteria set out in the method: three-year provider cost (35%), steps covered (27%), renewal fare, fit with South Dakota rules and fee labeling.

1. Mainstay Filing: best for a single provider for any destination

Start here$149 a lap (renewal $149)

Stop one, Mainstay Filing: a flat $149 yearly fare from a provider that runs in every state.

Three laps with it cost $150 more than with SD Registered Agent.org; coverage is weighted 27%, and the extra stops it handles make up the difference.

The fare covers

Street address in South Dakota on the public map
If papers are served on the company, they are scanned the same business day at no cost
Letters from government offices are scanned free, the first three each year
The same service runs for corporations, partnerships and nonprofits

On the plus side

$149 a year, level at renewal
One fare on every route

On the minus side

A yearly premium of $50 over SD Registered Agent.org
Reports are the owner's to clear on this ticket

Visit Mainstay FilingPartner link. We may earn money if you buy.

2. SD Registered Agent.org: best for companies that stay inside South Dakota

Local pick$99 a lap (renewal $99)

Farther along, SD Registered Agent.org, where a nearby agent at $99 a year whose street address goes on the public map.

The fare covers

South Dakota street address as registered office
Papers served are scanned into your account

On the plus side

Under Mainstay Filing on the yearly fare
$99 yearly, no step up

On the minus side

A one-state route
Annual report sits outside the fare

Visit SD Registered Agent.orgPartner link. We may earn money if you buy.

3. South Dakota Registered Agent.co: best for an office address on the route

Local pick$99 a lap (renewal $99)

Farther along, South Dakota Registered Agent.co, where a nearby agent at $99 a year whose street address goes on the public map.

Compared with SD Registered Agent.org, the fares come out level.

The fare covers

South Dakota street address as registered office
Papers served are scanned into your account

On the plus side

$99 yearly, no step up
Under Mainstay Filing on the yearly fare

On the minus side

A one-state route
Annual report sits outside the fare

Visit South Dakota Registered Agent.coPartner link. We may earn money if you buy.

South Dakota route services in one table

Stop	Provider	Yearly rate	Renewal rate	Provider cost, three years
1	Mainstay Filing	$149	$149/yr	$447	Visit Mainstay FilingPartner link. We may earn money if you buy.
2	SD Registered Agent.org	$99	$99/yr	$297	Visit SD Registered Agent.orgPartner link. We may earn money if you buy.
3	South Dakota Registered Agent.co	$99	$99/yr	$297	Visit South Dakota Registered Agent.coPartner link. We may earn money if you buy.

Each fare was read from the provider's own pages on November 12, 2026. Switching agents leaves the state tolls where they are.

South Dakota agent route calculator

Each agent fare is paired with the state tolls that repeat (the annual report beginning in year two). The opening fee is not in the total.

South Dakota and the stops on either side of it

Mile	State	Yearly state fees
27th	North Dakota	$50
27th	Virginia	$50
30th	South Dakota	$55
31st	Georgia	$60
31st	Wyoming	$60

Registered agent rules by state plots all fifty, least expensive first.

South Dakota registered agent rules in the state's own words

Every LLC must name a registered agent with an in-state street address. The address has to be an actual street address or rural route box number in South Dakota, plus a South Dakota mailing address if it differs.

Allowed drivers: 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. (SDCL 59-11-6)

Tolls that keep coming

One stop repeats: the annual report, $55 every year, due during the entity's anniversary month. Arriving late adds $50.

Reasoning for the order

Mainstay Filing won the lead on steps the service takes over, worth 27% of the total; SD Registered Agent.org came next.

Fifty-state reach outweighed SD Registered Agent.org on our weights.

Common questions

Does every South Dakota LLC have to carry a registered agent?

Yes. Every LLC must name a registered agent with an in-state street address.

Who is allowed to serve as the registered agent on a South Dakota route?

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.

What does registered agent service cost per year for South Dakota?

$99 to $149 a year, going by the stops above.

What does the state toll an LLC every year?

$55 a year by our one-year measure, which is the annual report ($55 every year).

Which registered agents are on this route?

Mainstay Filing ($149 a year), SD Registered Agent.org ($99 a year) and South Dakota Registered Agent.co ($99 a year), beginning with our lead pick.

Which registered agent should I take?

Mainstay Filing is stop one, because $149 a year, level at renewal, valid on every route; after that come SD Registered Agent.org and South Dakota Registered Agent.co.

Nearby routes

Survey markers for this route

Survey marker

Marker sdsos.gov, covering South Dakota Secretary of State, Business Services /, logged August 2026.
Marker sosenterprise.sd.gov, covering South Dakota Secretary of State, Business Services /, logged August 2026.
Marker sdlegislature.gov, covering South Dakota yearly filing: Annual report: fee and, logged October 2026.
Marker sdlegislature.gov, covering South Dakota report due date, logged August 2026.
Marker sdlegislature.gov, covering SDCL 47-34A-203, logged August 2026.
Marker sdsos.gov, covering South Dakota formation fee: Filing fee, official source, logged October 2026.
Marker sdlegislature.gov, covering South Dakota formation fee: Filing fee, official source, logged October 2026.
Marker sdlegislature.gov, covering South Dakota registered agent statute, logged October 2026.
Marker sos.nd.gov, covering North Dakota Secretary of State, Business Division, logged August 2026.
Marker sos.nd.gov, covering North Dakota Secretary of State, Business Division, logged August 2026.
Marker law.lis.virginia.gov, covering Virginia yearly filing: Recurring filing, official source, logged October 2026.
Marker scc.virginia.gov, covering Virginia yearly filing: Recurring filing, official source, logged October 2026.
Marker sos.ga.gov, covering Georgia Secretary of State fee schedule Rev. 8/2025, logged October 2026.
Marker wyobiz.wyo.gov, covering Wyoming Secretary of State, Business Division, logged August 2026.
Marker wyobiz.wyo.gov, covering Wyoming Secretary of State, Business Division, logged August 2026.
South Dakota service page, Mainstay Filing, company site surveyed November 12, 2026
Pricing page, SD Registered Agent.org, company site surveyed November 12, 2026
Pricing page, South Dakota Registered Agent.co, company site surveyed November 12, 2026