Section 501(c) organizations, and Section 527 organizations use Schedule C (Form 990 or 990-EZ) to furnish additional information on political campaign activities or lobbying activities. Current Revision Schedule C (Form 990 or 990-EZ) PDF Instructions for Schedule C (Form 990 or 990-EZ) (Print Version PDF) Recent Developments None at this time. Other Items You May Find Useful All Schedule C (Form 990 or 990-EZ) Revisions Other Current Products Related About Form 990, Return of Organization Exempt from Income Tax About Form 990-EZ, Short Form Return of Organization Exempt from Income Tax About Form 990-T, Exempt Organization Business Income Tax Return (and proxy tax under section 6033(e)) About Form 1120-POL, U.S. Income Tax Return for Certain Political Organizations About Form 4720, Return of Certain Excise Taxes Under Chapters 41 and 42 of the Internal Revenue Code About Form 5768, Election/Revocation of Election By an Eligible Section 501(c)(3) Organization to Make Expenditures To Influence Legislation