Tax Guide Form 990: What’s in a Tax Return for the Tax-Exempt? IRS Form 990: Tax Returns for 501(c) Organizations Switching gears again in PDFfiller‘s tax form review, we are moving on to the non-profit sector, starting with a look at IRS ... Tax Guide Form 990 & 990EZ: Tax Returns for Exempt Organizations This post was updated in April 2018 An organization with 501(c) status is exempt from taxation by the federal government, but that doesn’t mean it is exempt from filing ...