How altering the tax code may change charitable giving

Roughly double the standard deduction

-3.9%

Make the charitable deduction universal

4.3%

Cut the top marginal tax rate to 35%

-0.8%

Double the standard deduction & cut the top marginal tax rate

-4.6%

Double the standard deduction & make the charitable deduction universal

2.5%

Double the standard deduction, make the charitable deduction universal & cut the top marginal tax rate

1.7%