SAG does not issue W2 tax forms. Instead, members receive them from the companies they've worked for. If members need to contact a studio or payroll house directly to change their listed address or ask questions about W2 tax forms, here is the contact info for some of the major studios and payroll houses (including Guild contacts):
In addition to the Screen Actor magazine you've traditionally received in your home, SAG now has a new digital issue, a companion to the print version, with exclusive bonus content you can't get in print, such as video and links to other online content. Take a look here! You can even download your own SAG Awards scorecard. (No substitute for actual voting of course, but it will help you keep track of your picks when the big show airs live this Sunday at 5 p.m. PT/8 p.m. ET on TNT and TBS.