Where do you mail your W-2 form?

You typically don't mail your W-2 form to anyone unless specifically instructed, as it is primarily for your records and for filing your tax return. However, if you are filing your tax return by mail, you will include a copy of your W-2 with your return. If you need to send it to the Social Security Administration (SSA) for any reason, you would mail it to the address specified in the IRS instructions or on the SSA's website. Always ensure to keep a copy for your own records.