A tax identification number is a unique nine-digit number issued by the Social Security Administration or the IRS to anyone who pays taxes.

You may, for example, need a state tax ID number if you: Have hired employees or plan to. Sell goods or services that are subject to sales tax.

A federal tax ID number, also known as an EIN, is a nine-digit number that identifies your company with the IRS. Here is how to lookup your business's EIN online ...

An EIN is a federal tax ID number for an entity, estate, trust, or other organization. For example, the following are generally required to obtain an EIN: partnerships, limited liability companies ...

With last season just wrapping up—and the 2025 tax season around the corner—the IRS is reminding tax pros that it’s an excellent time to renew their Preparer Tax Identification Number (PTIN ...

Business owners can apply for their Employer Identification Number in minutes and use it to hire ... (including, for example, ... An EIN is also referred to as a Federal Tax Identification Number.