Paper employer withholding and school district withholding forms are no longer available. Electronic filing has been mandatory since 2015.Business tax forms from the Village of Bluffton's income tax department are available here. Except as provided below, corporations are exempt from backup withholding for certain payments, including interest and dividends. 1. First, register with the Ohio Secretary of State. Registration information as well as forms are available online(opens in a new window) or at (877) SOS-FILE.