What is a tax ID number? It's a unique nine-digit number issued by the Social Security Administration or the IRS to anyone ...

Tax-identification numbers are required on all tax forms, including tax returns. The number is how your business is identified by the IRS. The tax-identification number for your business can be either ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Michael Rosenston is a fact-checker and researcher with expertise in business, finance, and ...

Ever tried filing taxes, opening a U.S. bank account, or applying for a loan and hit a wall because you don’t have a Social Security Number? That’s where a taxpayer identification number (or TIN) can ...

An EIN is a unique business tax ID number that you can get online in just a few minutes. Many, or all, of the products featured on this page are from our advertising partners who compensate us when ...

Companies, like people, are usually known by their names, but people and companies both have other types of identification, often issued by government agencies in the form of identification numbers.

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Khadija Khartit is a strategy, investment, and funding expert, and an educator of fintech ...

An employer identification number (EIN) is issued by the Internal Revenue Service (IRS) to identify a business for tax administration purposes. It’s also used to complete some core business tasks, ...