South Dakota: Foreign LLC Registration and Qualification Requirements

Requirements one by one

Governing law, trigger, and safe harbors

South Dakota uses an application for certificate of authority under article
10 of the Revised Uniform Limited Liability Company Act. SDCL
§ 47-34A-1001 leaves internal affairs and member-manager liability to the
formation jurisdiction's law, while § 47-34A-1002 bars a foreign LLC from doing
business in South Dakota until it obtains authority from the Secretary of
State.

SDCL § 47-34A-1003 excludes proceedings; internal affairs; financial accounts;
securities offices, trustees, and depositories; independent-contractor sales;
orders accepted outside South Dakota; debt, mortgages, security interests, and
related collection or enforcement property; interstate commerce; and an
isolated transaction completed within 30 days outside a course of similar
transactions. The section does not define every activity outside that list, so
the remaining boundary is fact-specific.

The property rule points the other way: owning income-producing South Dakota
real property or tangible personal property constitutes transacting business
unless the property falls within another listed exclusion. The safe harbors do
not decide tax, service-of-process, or other regulatory contacts.

Application and home-state evidence

SDCL § 47-34A-1002 requires the company name and any alternate name, formation
jurisdiction, principal-office street and mailing addresses, the equivalent
addresses for any office the home jurisdiction requires, series information if
applicable, and the initial service agent's name and street and mailing
addresses.

The application must include a certificate of existence or similar record
signed by the home jurisdiction's Secretary of State or other official who
holds the company's public records. The statute states no maximum age. The
current paper form is narrower in format: it directs the filer to attach a
one-page original certificate.

The official form calls for an authorized person's signature, printed name,
title, and date. It has no notary block. It warns that knowingly executing a
materially false report may carry a criminal penalty.

Name and South Dakota agent

SDCL § 47-34A-1005(a) requires a company with a noncompliant name to adopt a
complying alternate name before authority may issue. The LLC then uses that
alternate name in South Dakota unless it separately obtains authority to use
another name. SDCL § 47-34A-105(a)–(c) supplies the LLC identifier and
distinguishability rules.

Under SDCL § 59-11-6, the registered-agent filing may identify a commercial
agent, a named noncommercial agent and address, or an internal office or
position and its business-office address. Naming a commercial or
noncommercial agent affirms the agent's consent. The current foreign-LLC paper
form provides commercial-agent and named-noncommercial-agent fields, including
a South Dakota street address and any different mailing address.

Filing method, fee, and authority date

The Secretary of State offers online filing and a fillable paper application.
The current ordinary foreign-LLC fee is $750 online or $765 on paper,
which includes the additional $15 paper fee. SDCL § 47-34A-212(a), (c)
separately sets an $800 filing fee for a foreign master or series filing,
outside this ordinary-LLC survey.

Under SDCL § 47-34A-1004, the Secretary files a compliant application,
prepares, signs, and files the certificate of authority, and sends the filed
certificate and fee receipt. SDCL § 47-34A-206 makes an accepted record
effective at the endorsed filing time or a stated time. More specifically,
§ 47-34A-206(c)–(d) permits a delayed effective date capped at 90 days. The
current paper application has no dedicated delayed-effective-date field.

Unregistered consequences and cure

SDCL § 47-34A-1008 prevents an unregistered foreign LLC transacting business
from maintaining a South Dakota action or proceeding until it obtains
authority. The lapse does not invalidate its contracts or acts, prevent it
from defending a proceeding, or make a member or manager personally liable
solely because authority was missing.

Doing business without authority—or cancelling authority—appoints the
Secretary of State as agent for service for claims arising from the South
Dakota business. SDCL § 47-34A-1009 also lets the Attorney General seek an
injunction. Those two sections state no fixed monetary nonregistration
penalty.

What trips people up

• Income-producing property is an express trigger. South Dakota does not
  have the broad “owning property without more” harbor found in some states.
• The 30-day rule is narrow. It protects one isolated transaction completed
  within 30 days only when the transaction is not part of similar repeated
  transactions.
• The statute and paper form use different evidence detail. The statute
  allows a certificate or similar official record and sets no age limit; the
  current paper form asks for a one-page original certificate.
• Use the live fee schedule. Current official text and the fee page state
  $750 online and $765 paper; the form's revision date alone is not a fee-
  currency signal.

Common questions

Does one South Dakota transaction require authority?

Not necessarily. Section 47-34A-1003 protects an isolated transaction completed
within 30 days if it is not in a course of similar transactions.

Does an existence certificate need to be recently issued?

The statute and current paper form state no age limit. The paper form does,
however, ask for a one-page original certificate from the official who keeps
the home-jurisdiction records.

Can an unregistered foreign LLC defend a lawsuit?

Yes. Section 47-34A-1008 preserves defense rights and contract validity while
conditioning the LLC's own action on obtaining authority.

Is there a daily or yearly South Dakota nonregistration fine?

Sections 47-34A-1008 and 47-34A-1009 state no fixed monetary penalty. They
instead provide the suit bar, fallback service through the Secretary of State,
and Attorney General injunction authority.

Statutes and sources

• S.D. Codified Laws §§ 47-34A-1001 to -1005 and -1008 to -1009. Governing
  law, certificate trigger, safe harbors and property rule, application,
  issuance, alternate name, unregistered consequences, and injunction.
  South Dakota foreign-LLC article
  (accessed July 27, 2026).
• S.D. Codified Laws §§ 47-34A-105, -206, and -212; § 59-11-6. Name,
  effective date, fees, agent routes, and consent. Name,
  filing effect,
  fees, and
  agent filing (accessed
  July 27, 2026).
• South Dakota Secretary of State. Current online and paper routes, $750 and
  $765 fees, paper-form contents, signature, and original-certificate
  instruction. LLC forms,
  fee schedule, and
  paper application
  (accessed July 27, 2026).