My husband received a TIN some years ago, and it is on the 1099 in question (which has the recipient being our business name, and his name). I'm afraid I don't entirely understand what you said about not continuing to use the EIN for the business. I did read the IRS topic, but that didn't clear it up for me. In what case should the TIN be used? Should he have given his ss# to that payer instead?
