Business Registers in Missouri: Secretary of State

Overview

Missouri business registration runs through the Secretary of State (SOS), specifically its Corporations Division, which keeps the official record of entities formed or registered to do business in the state. Searches and filings go through the SOS Business Services portal at bsd.sos.mo.gov.

Missouri handles recurring filings differently depending on the entity type, which matters for KYB work. Corporations and nonprofits file a Registration Report, and they may elect to file it annually or every two years. LLCs and limited partnerships, by contrast, file no recurring report at all. Once a Missouri LLC is formed, the state does not require it to refresh its record, so the registered agent and management details on file can be older than for a corporation.

Missouri has no state-level beneficial ownership register. At the federal level, the Corporate Transparency Act (2021) created a BOI registry run by FinCEN, but a March 2025 interim final rule lifted the obligation for all U.S. companies and U.S. persons. Only foreign reporting companies remain subject to it.

For KYB and AML work, the free SOS search returns an entity's status, charter number, registered agent, principal office, and the officers and directors named in a corporation's or nonprofit's Registration Report. Officer and director data is public for entities that file those reports; LLC member and manager data is only what appears in the formation documents.

Official Registers

Secretary of State (Business Entity Search)

The SOS Corporations Division maintains the official register through its Business Entity Search. It records domestic and foreign corporations, LLCs, nonprofit corporations, limited partnerships, and limited liability partnerships.

Search and access. The Business Entity Search is free and needs no account. Search by entity name, charter number, or registered agent name. Each record shows the entity name, charter number, type, status, formation or registration date, registered agent name and office address, and the principal office. For corporations and nonprofits, the officers and directors from the most recent Registration Report are also visible.

Charter number. Missouri assigns each entity a charter number at formation, which is the primary identifier across the register and the key most lookups run on.

Filings. Formation documents go in online through the SOS portal or by mail. Articles of Organization for domestic LLCs cost $50 online or $105 by mail. Articles of Incorporation for for-profit corporations start at $58 for the first $30,000 of authorised shares and rise by $5 for each additional $10,000, so the fee scales with the corporation's authorised capital. Nonprofit Articles of Incorporation cost $25. Foreign corporations pay a $155 qualification fee.

Certificates. Certificates of Good Standing and certified copies of filed documents are available from the SOS for a fee.

Registration and Publication Requirements

Corporations

All domestic and foreign for-profit corporations must register with the SOS and maintain a registered agent at a Missouri address.

Registration Report. Corporations file a Registration Report, due by the end of the month in which the corporation was formed. They may elect to file it annually or biennially. The annual report costs $20 online or $45 by mail; the biennial report costs $40 online or $90 by mail. The report carries the principal office, the registered agent name and address, and the names and addresses of the directors and officers, all of which become part of the public record.

The anniversary-month deadline applies to corporations formed on or after July 1, 2003. Entities that existed before that date keep the deadline shown on their last registration report, fixed to that month permanently, so the due date for an older Missouri company will not always line up with its incorporation month. This is worth checking when diligencing long-established entities.

A late report draws a $15 penalty for each 30-day period it remains overdue. After 90 days past the due date, the SOS administratively dissolves a domestic corporation or revokes a foreign corporation's authority to do business. The entity must then be reinstated to return to good standing.

Financial statements. There is no public financial disclosure requirement.

LLCs

All domestic and foreign LLCs must register with the SOS and maintain a registered agent in Missouri. Domestic formation costs $50 online or $105 by mail.

No annual report. Missouri LLCs file no recurring report and pay no recurring SOS fee after formation. This keeps ongoing compliance light, but it also means the public record for an LLC is only as current as its last filing. Member and manager details come from the Articles of Organization and any later amendments rather than a periodic report.

Nonprofit corporations

Nonprofits file Articles of Incorporation with the SOS at $25 and file a Registration Report, due by August 31. As with corporations, they may elect annual or biennial filing; the annual report costs $10 online or $15 by mail. Directors and officers appear on the public record. Federal 501(c) status comes from the IRS; the state filing does not grant it.

Limited partnerships and LLPs

Limited partnerships register with the SOS and, like LLCs, file no recurring report. Limited liability partnerships register and renew under a separate fee structure tied to the number of partners. Both must maintain a registered agent in Missouri.

Sole proprietors and general partnerships

Sole proprietors and general partnerships do not register as entities with the SOS and do not appear in the business search. A business operating under a name other than the owner's may register a fictitious name, which is held on file separately.

Summary table

With Topograph

Topograph queries Missouri's Secretary of State system to return structured company data for entities registered in the state.

Available Data

Company Profile

• Missouri charter number
• Entity name
• Entity type and state of formation
• Current status
• Formation or registration date
• Registered agent name and address
• Principal office address

Officers and Management

• Officers and directors as reported in a corporation's or nonprofit's Registration Report
• LLC member and manager detail where present in the formation documents

Available Documents

Financial statements aren't filed publicly in Missouri. For LLCs, the public record reflects the formation documents rather than a recurring report, so management data may be older than for a corporation. Domestic companies are also exempt from federal BOI reporting following the March 2025 FinCEN rule.

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