How To Write A Conversion Plan For Llc To Corporation . The process of changing the tax status of an llc to a corporation or s corporation is called an election. A plan of conversion document, business formation documents for the converted entity, and a certificate of the conversion. LOGO from www.sec.gov 179 and limited liability companies governed by ch. File the correct forms with the secretary of state's office. Convert an existing plan to an s corp comparison plan.