As you prepare to file your taxes in advance of the April 15 deadline, you may be wondering about certain terminology. For instance, the 1040 form that most people use to file their federal income ...

An EIN, also called a federal identification number, 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 ...

What is a state tax ID number, and what is it for? A state tax ID number is sometimes called a state employer ID, state EIN or state tax registration. It’s assigned by a state to identify a business ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Lea Uradu, J.D., is a Maryland state registered tax preparer, state-certified notary public, ...

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 ...

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.

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To take advantage of most credits, deductions and exemptions, the Internal Revenue Service requires that you provide a TIN, or Taxpayer identification number for yourself, your spouse and your ...