4 ms·I can't, because I'm not 18. And he doesn't want to use his.by stasy 12y agoI can't, because I'm not 18. And he doesn't want to use his.eschutte2 12y agoWhere'd you hear that there's an age limit on applying for an EIN? And you didn't say why you need one.stasy 12y agoI tried using my own SSN, but they said I wasn't old enough. You have to send in that info for tax forms and such.