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State Filing Data LLC fees by state, read from the source.

Registered agent guide · South Dakota

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

Short answer for South Dakota in 2026: South Dakota Registered Agent.co ($99 a year), SD Registered Agent.org ($99 a year) and Mainstay Filing ($149 a year), in that order. Every South Dakota LLC must keep a registered agent on file. The state's own yearly fees come to $55, 30th of 50.
State Filing Data research desk

South Dakota at a glance

among 50 states on yearly fees

Rank 1 is the least expensive state. See all 50

Registered agent required

Yes

per sdlegislature.gov, October 2026

Annual report

$55 / yr

Deadline: due during the entity's anniversary month. per sdlegislature.gov, October 2026

Yearly state fees

$55

Recurring, per year

South Dakota picks

Scored on five weighted criteria (methodology). Biggest weights: three-year service fees and filings covered.

First pick

1. South Dakota Registered Agent.co: best for a budget agent

$99/yr, same at renewal

We'd start with South Dakota Registered Agent.co: $99 a year flat, with served papers scanned to you online.

Lower three-year service fees than Mainstay Filing put it on top; cost carries 35% of our method.

What you pay for

  • In-state registered office address
  • Scans of served papers, online

For

  • Lower yearly cost than Mainstay Filing
  • Annual price $99, renewal price $99

Against

  • Covers South Dakota only
  • You file the annual report
Visit South Dakota Registered Agent.co Partner link. We may earn money if you buy.
South Dakota specialist

2. SD Registered Agent.org: best for an in-state office address

$99/yr, same at renewal

Pick 2, SD Registered Agent.org: $99 a year flat, with served papers scanned to you online.

It publishes the same prices as South Dakota Registered Agent.co, so the two are close.

What you pay for

  • In-state registered office address
  • Scans of served papers, online

For

  • Annual price $99, renewal price $99
  • Lower yearly cost than Mainstay Filing

Against

  • Covers South Dakota only
  • You file the annual report
Visit SD Registered Agent.org Partner link. We may earn money if you buy.
All fifty states

3. Mainstay Filing: best for growing companies

$149/yr, same at renewal

Third on our list, Mainstay Filing: the same $149 agent price in every state, so a growing company keeps one provider.

South Dakota Registered Agent.co undercuts it by $150 over three years, which is why it sits lower here.

What you pay for

  • A physical in-state address
  • Service of process scanned the same business day, no fee
  • First three government mailings a year scanned free
  • Works for LLCs, corporations, LPs, LLPs and nonprofits

For

  • Any state at one price
  • $149 a year

Against

  • $50 yearly premium over South Dakota Registered Agent.co
  • Report filing needs the formation package
Visit Mainstay Filing Partner link. We may earn money if you buy.

South Dakota picks compared

#ServiceAnnual priceRenewal priceThree-year service fees
1 South Dakota Registered Agent.co $99$99/yr$297
Visit South Dakota Registered Agent.co Partner link. We may earn money if you buy.
2 SD Registered Agent.org $99$99/yr$297
Visit SD Registered Agent.org Partner link. We may earn money if you buy.
3 Mainstay Filing $149$149/yr$447
Visit Mainstay Filing Partner link. We may earn money if you buy.

Service prices from each company's own pages, read November 12, 2026. South Dakota's own fees are the same whichever agent you choose.

Upkeep calculator

Agent prices plus South Dakota's yearly state fees (the annual report from year two). Formation fees are left out.

$407 over 3 years with South Dakota Registered Agent.co (state $110, service $297).

How South Dakota compares with nearby ranks

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

See the 50-state table for every rank.

South Dakota registered agent requirements (official, Secretary of State)

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.

Who can serve: 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. See SDCL 59-11-6.

South Dakota LLC upkeep (2026)

Your registered agent receives the state's notices about the annual report, which costs $55 every year and is due due during the entity's anniversary month.

Why South Dakota Registered Agent.co is first

Deciding factor in South Dakota: service fees over three years (35%). South Dakota Registered Agent.co beat SD Registered Agent.org on it.

South Dakota Registered Agent.co's three-year service fees: $297 ($150 under Mainstay Filing).

FAQ

Does South Dakota require a registered agent?

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

Who can serve as the registered agent?

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.

How much does a registered agent cost in South Dakota?

Expect $99 to $149 a year.

What does the LLC pay the state each year?

$55 a year on our measure: the annual report ($55 every year).

Which registered agents are on this page?

South Dakota Registered Agent.co ($99 a year), SD Registered Agent.org ($99 a year) and Mainstay Filing ($149 a year), from first to last.

Which registered agent would you pick?

South Dakota Registered Agent.co first: a South Dakota-only plan at $99 a year that renews at $99. Then SD Registered Agent.org and Mainstay Filing.

See also

Official sources and price pages

  1. South Dakota Secretary of State, Business Services /. sdsos.gov. Checked August 2026.
  2. South Dakota Secretary of State, Business Services /. sosenterprise.sd.gov. Checked August 2026.
  3. South Dakota yearly filing: Annual report: fee and. sdlegislature.gov. Checked October 2026.
  4. South Dakota report due date. sdlegislature.gov. Checked August 2026.
  5. SDCL 47-34A-203. sdlegislature.gov. Checked August 2026.
  6. South Dakota formation fee: Filing fee, official source. sdsos.gov. Checked October 2026.
  7. South Dakota formation fee: Filing fee, official source. sdlegislature.gov. Checked October 2026.
  8. South Dakota registered agent statute. sdlegislature.gov. Checked October 2026.
  9. North Dakota Secretary of State, Business Division. sos.nd.gov. Checked August 2026.
  10. North Dakota Secretary of State, Business Division. sos.nd.gov. Checked August 2026.
  11. Virginia yearly filing: Recurring filing, official source. law.lis.virginia.gov. Checked October 2026.
  12. Virginia yearly filing: Recurring filing, official source. scc.virginia.gov. Checked October 2026.
  13. Georgia Secretary of State fee schedule Rev. 8/2025. sos.ga.gov. Checked October 2026.
  14. Wyoming Secretary of State, Business Division. wyobiz.wyo.gov. Checked August 2026.
  15. Wyoming Secretary of State, Business Division. wyobiz.wyo.gov. Checked August 2026.
  16. Read November 12, 2026 from South Dakota Registered Agent.co's pricing page
  17. Read November 12, 2026 from SD Registered Agent.org's pricing page
  18. Read November 12, 2026 from Mainstay Filing's South Dakota service page