An SOSID in North Carolina is the seven-digit Secretary of State Identification Number assigned to every business entity on file with the Secretary of State’s office. It acts as a permanent tracking number for your company’s state registration, staying with the entity from formation through dissolution even if the name, registered agent, or ownership changes. You’ll run into it most often when registering for state taxes, searching public business records, or requesting a certificate of existence.
What the Number Is and When You Get One
SOSID stands for Secretary of State Identification Number. North Carolina assigns one automatically the moment you file your formation documents: articles of incorporation for a corporation, articles of organization for an LLC, and the equivalent paperwork for other entity types. From that point forward, every filing, amendment, annual report, and legal record tied to your business is indexed under that number.
The SOSID doesn’t change. Amend your articles, merge with another company, rebrand entirely, swap registered agents — the number stays. Because business names shift over time, the state needs a fixed reference, and the SOSID is it. The system reaches beyond traditional entity formations too; North Carolina’s assumed business name statute specifically references the “identification number assigned to the assumed business name by the Secretary of State (SOS ID).”1North Carolina General Assembly. North Carolina General Statutes Chapter 66 Article 14A
Which Businesses Have an SOSID
Any organization that files formation or registration documents with the North Carolina Secretary of State receives one. That includes business corporations, limited liability companies, nonprofit corporations, limited partnerships, and limited liability partnerships.
Foreign entities — companies formed in another state — also get an SOSID once they file an application for a certificate of authority to do business in North Carolina. That filing costs $250 and brings the out-of-state company into the same tracking system as domestically formed entities.2North Carolina General Assembly. North Carolina Code 55-1-22 – Filing, Service, and Copying Fees
For state tax registration, the North Carolina Department of Revenue generally requires the SOSID from corporations, while LLCs and partnerships typically register using their federal EIN.3North Carolina Department of Revenue. Prepare to Register Your Business
SOSID vs. Federal EIN
These two numbers get confused constantly, but they do different jobs. An EIN is a federal tax ID issued by the IRS. You use it to file federal tax returns, hire employees, and open business bank accounts.4Internal Revenue Service. Employer Identification Number The SOSID is a state administrative number that tracks your entity’s registration, filings, and legal standing with North Carolina.
Most businesses need both, and the sequence matters. The IRS directs you to register your entity with the state before applying for an EIN.4Internal Revenue Service. Employer Identification Number So the SOSID typically comes first, proving the entity legally exists in North Carolina, and the EIN follows, identifying it to the federal government. When you register for state taxes, the Department of Revenue asks for both because each connects to a different system.3North Carolina Department of Revenue. Prepare to Register Your Business
How to Look Up an SOSID
The Secretary of State runs a free online search at sosnc.gov. The database is public, no account required. You can search several ways:
- By business entity name, full or partial. Results list each matching entity with its SOSID and type.
- By the SOSID itself, if you already have the seven digits.
- By registered agent name, which returns every entity that agent represents in North Carolina.
- By officer or director name, which returns every entity they’re associated with.
Click into any result and you’ll see the full detail page.
What the SOSID Record Shows
Each record carries a working snapshot of the entity: legal name, current status (active, dissolved, or suspended), date formed, citizenship (domestic or foreign), and entity type. Below that sit the registered agent’s name and address, the principal office address, mailing address, and current officers such as president and vice president.
The registered agent is the person or company designated to accept legal documents on the entity’s behalf. North Carolina law requires every domestic and foreign entity authorized to do business in the state to continuously maintain a registered agent with a registered office.5North Carolina General Assembly. North Carolina General Statutes Chapter 55D – Filings, Names, and Registered Agents Because the agent’s name and address are in the SOSID record, anyone with a lawsuit or official notice can see exactly where to send it.
The record also opens the door to the full filing history: original formation documents, amendments, name changes, and annual reports. For corporations, annual report records include stock information such as share classes and par values. If you’re doing due diligence on a prospective partner, verifying a vendor, or checking whether a company has stayed current, this is where you look.
Getting a Certificate of Existence
A certificate of existence is North Carolina’s version of what most states call a certificate of good standing. It confirms the entity is properly registered and in compliance. You’ll typically need one to apply for a business loan, register to operate in another state, or close certain transactions. The state charges $15 for a paper certificate and $10 for an electronic one, and you request it through the Secretary of State using your SOSID.2North Carolina General Assembly. North Carolina Code 55-1-22 – Filing, Service, and Copying Fees
Keeping Your Entity Active
The SOSID is permanent, but the status attached to it depends on whether you meet the state’s ongoing requirements. The two big ones are filing annual reports and maintaining a registered agent.
North Carolina corporations file annual reports with the Secretary of State. The fee is $18 electronically or $25 on paper, and it’s nonrefundable.2North Carolina General Assembly. North Carolina Code 55-1-22 – Filing, Service, and Copying Fees Annual reports update the state on your current officers, registered agent, and principal office address. Missing them is one of the most common reasons corporations get administratively dissolved.
If the Secretary of State administratively dissolves your entity for missed reports or a lapsed registered agent, you lose active status and can no longer legally conduct business in North Carolina. The SOSID itself doesn’t disappear; the record simply shows the entity as dissolved.
To restore active status, you file an application for reinstatement stating that the grounds for dissolution either never existed or have been corrected. If another entity has taken a name too similar to yours during the dissolution period, you’ll have to pick a new name before the Secretary of State will process the reinstatement.6North Carolina General Assembly. North Carolina Code 55-14-22 – Reinstatement Following Administrative Dissolution The reinstatement fee is $100.2North Carolina General Assembly. North Carolina Code 55-1-22 – Filing, Service, and Copying Fees A successful reinstatement takes effect retroactively as of the dissolution date, so the corporation is treated as if the dissolution never happened.