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

An Individual Taxpayer Identification Number is a nine-digit number the IRS uses to process taxes and administer tax laws. The agency issues them only to certain nonresident and resident aliens, as ...

A Tax Identification Number (TIN) is required for all entities to file tax returns. Individuals use their Social Security Number (SSN) as their TIN for personal taxes. Businesses need unique TINs, ...

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 ...

The numbers you plug into your tax software or give to your CPA, and how they square up with the numbers the IRS has on you, will determine whether you leave money on the table, overpay, or satisfy ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Pete Rathburn is a copy editor and fact-checker with expertise in economics and personal ...

A federal employer identification number (EIN), also sometimes referred to as a tax identification number, is a nine-digit code that businesses use to identify themselves for tax reporting, banking, ...

Your tax ID number provides agencies like the Internal Revenue Service (IRS) and your employer a way of withholding the correct amount of tax from your wages. Supplying the wrong number may hold up a ...

An employer identification number (EIN) is issued by the Internal Revenue Service (IRS) to identify a business for tax administration purposes. It’s also used to complete some core business tasks, ...