A tax identification number (TIN) is a unique nine-digit number issued by the Social Security Administration or the Internal Revenue Service to anyone who pays taxes (personal or business). Your TIN ...

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 Aadhaar? Can non-resident Indians apply for it? The Aadhaar number is a 12-digit personal identification (ID) number assigned by the Unique Identification Authority of India (UIDAI), ...

This guide was reviewed by a Business News Daily editor to ensure it provides comprehensive and accurate information to aid your buying decision. Tax identification numbers (TINs) and corporate ...

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, ...

Like any individual, a business needs an identifier to separate it from every other company. Most small business owners get a separate tax identification number (TIN) in order to conduct business, ...

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.