A Taxpayer Identification Number (TIN) is an identification number used by the Internal Revenue Service (IRS) in the administration of tax laws. It is issued either by the Social Security Administration (SSA) …

Jun 6, 2025 · Your state tax ID and federal tax ID numbers — also known as an Employer Identification Number (EIN) — work like a personal social security number, but for your business. They let your …

Jul 23, 2025 · Confused about which US taxpayer ID number you need — SSN, ITIN, EIN, or something else? This guide explains each type, who qualifies, when it's required, and how to apply.

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

Dec 5, 2025 · Find out how to apply for an Individual Taxpayer Identification Number (ITIN) and use it to file your federal tax return.

May 10, 2025 · A Tax Identification Number (TIN) is a unique number assigned to taxpayers and used by the Internal Revenue Service (IRS) in its administration of the nation's tax system.

Jul 14, 2025 · Every individual and business in the US has a unique tax ID number—this is how the IRS identifies each taxpayer. But what happens if you can't find one that you need? Ultimately, it depends …

What is a tax ID number? A tax identification number, sometimes also called a "TIN number," is a unique nine-digit number that identifies you to the IRS.

Aug 10, 2025 · Need to find your Taxpayer Identification Number (TIN)? Our guide offers clear, secure steps to locate your essential tax ID for any situation.

Dec 16, 2025 · Find out if you need an employer identification number (EIN). Get one online, free from the IRS. Don’t pay for an EIN.