The corporation does not have any obligation to notify its employees about its tax structure. However, the nature of your question suggests you are not merely an employee, but that you are also a shareholder. Is that the case? If you are a shareholder, then it could not have changed from a "C" corporation to an "S" corporation without you signing a shareholder's consent.
Answered on Jul 22nd, 2011 at 11:02 AM