Can a 1099 be sent to a PO box?

Yes, a 1099 form can be sent to a P.O. Box. However, the recipient must ensure that the P.O. Box is valid and accessible, as this is where they will receive important tax information. It's essential for the sender to verify that the address used complies with IRS guidelines and that the recipient regularly checks the P.O. Box for timely receipt of the form.