IRS Form W-9 is *NOT* sent to the IRS. It is provided by you, to the person or entity that has a legal requirement for the information and requested your SSN/EIN. The address you provide on the W-9 is what the entity/person will use for mailing any tax documents to, such as a 1099-MISC, 1099-NEC, 1099-R or any other tax reporting document they are required to provide you.
