An Employer Identification Number (EIN) is a unique 9-digit number assigned by the Internal Revenue Service (IRS) to businesses and other entities for tax purposes. This number is often used as a business’s tax ID and is required when filing certain tax forms, such as the Form 1040. EINs are also used by banks and other financial institutions to identify businesses.
EINs are important because they help to ensure that businesses are properly identified and taxed. They also help to prevent fraud and identity theft. In 1955, the IRS introduced EINs to simplify the tax filing process and to improve compliance.
