SOS ID

An SOS ID (Secretary of State Identification Number) is a unique tracking code assigned to a business entity when it is officially formed or registered within a state.

If you are looking for your SOS ID, you are looking for your Entity ID. The two terms are functionally identical. The terminology simply depends on the specific state in which you operate.

For example, states with a central “Secretary of State” office tend to refer to this number as the SOS ID, while other jurisdictions might call it a Charter Number, Document Number, or File Number.

What is the SOS ID Used For?

The state government uses the SOS ID to track your business’s legal and financial compliance across its internal databases. You will typically need to provide your SOS ID when:

• Filing an Annual Report or Periodic Report.
• Requesting a Certificate of Good Standing.
• Updating your Registered Agent information.
• Paying state franchise fees or minimum entity taxes.

How to Find Your SOS ID

Because the SOS ID is a matter of public record, it is very easy to locate:

1. State Entity Search: Search for your business name on your state’s official Secretary of State website. The SOS ID is usually prominently displayed at the top of your company’s public profile.
2. Approved Filings: Look at the stamped, approved copy of your Articles of Organization (for an LLC) or Articles of Incorporation (for a Corporation). The state typically writes or prints the SOS ID on the first page.
3. Official Notices: Any compliance reminders or tax notices sent to your Registered Agent by the state will almost always include the SOS ID.

SOS ID vs. Federal Tax ID (EIN)

It is crucial not to confuse your state-issued SOS ID with your federal Employer Identification Number (EIN).

• SOS ID: Issued by the state government. It is a public record used exclusively for state-level compliance.
• EIN: Issued by the federal IRS. It is a highly confidential number used for federal tax filing, opening bank accounts, and hiring employees.