What is an entity number?

An entity number, also known as a business identification number, is a unique identifier assigned to a business entity by a government agency, typically the state in which the business is registered. This number is used to track and identify the business for tax and regulatory purposes.

Entity numbers are typically assigned when a business entity is registered with the state and may also be used for purposes such as obtaining a business license, opening a business bank account, and filing tax returns.

In some states, the entity number may be the same as the business's tax identification number (TIN) or employer identification number (EIN), while in others it may be a separate identifier.

Business entities such as corporations, limited liability companies (LLCs), and partnerships are typically required to have an entity number. Sole proprietorships may not be required to obtain an entity number, depending on the state in which they operate.