An EIN identifies a business that operates in the U.S. and a TIN (Taxpayer Identification Number) is used to describe different types of tax ID numbers. A Payer's TIN could be an Employer Identification Number (EIN), Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN).
You can contact the issuer of the 1099-NEC for the EIN. Refer to the TurboTax article How do I find my employer's EIN or Tax ID? for more options.
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