I am a massage therapist working out of an office that was under another therapist name. She will no longer be in this line of work. Can I continue to work under her business name? Also when filing my taxes in 2009 can I just file under my social since I will be a sole proprieter?.--Answer1:You can use the name with her written permission but need to report on YOUR social security number, on IRS Schedule C, also need form SE for self-employment tax, equivalent of social security