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

Janet Berry-Johnson, CPA, is a freelance writer with a background in accounting and income tax planning and preparation for individuals and small businesses. Her work has appeared in Business Insider ...

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 ...

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, ...

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, ...