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Form W-9 is an Internal Revenue Service form used to verify and certify that you are working with a legitimate business that is paying its taxes.
The basic information on a W-9 includes;
- Vendor’s business name (or personal name if a sole proprietor).
- Type of business.
- Business employer identification number (EIN) or social security number.
- A signature.
W-9s are required only for business-to-business relationships where more than $600 is paid in the calendar year. The $600 rule applies to labor and services. For direct sales, a W-9 is required for total purchases over $5,000.