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 ...

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 ...

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 ...

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 ...

The U.S. taxes international corporations, foreigners living in this country -- resident aliens -- and foreigners based in another country doing work here -- non-resident aliens -- on income they earn ...

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 ...

Each taxpayer in the U.S. needs to have a unique nine-digit number that can identify them to the IRS. Many Americans use their Social Security number, or SSN, to confirm their identity on tax returns ...

An employer identification number (EIN) is like a Social Security number (SSN) for a business. The IRS assigns an EIN — also known as a federal tax ID number — to any business that is eligible. EINs ...

Individual taxpayer identification numbers, or ITINs, are used to differentiate and identify taxpayers who aren't eligible for a Social Security number. If you use an ITIN, take a moment to verify ...

Tax identification numbers (TINs) and corporate numbers are similar concepts with some important distinctions. A tax ID number is used to identify different kinds of taxpayers while a corporate number ...

Opinions expressed by Entrepreneur contributors are their own. Q: I want to start a new onlinebusiness and don’t really know where to start. Do I have to geta U.S. federal tax ID number? If so, where ...