The 2017 Tax Cuts and Jobs Act (the Act) passed by Congress on December 22, 2017 marks the most significant tax law changes in over 30 years. Most taxpayers will see their tax liability decrease. The Congressional Budget Office estimates the Act will reduce tax revenues by $1.455 trillion over the next 10 years. But all is not good for non-profit organizations as there are changes in the Act that may negatively impact charitable contributions.