In which country is this? For example, https://en.wikipedia.org/wiki/Charitable_contribution_deductions_in_the_United_States https://en.wikipedia.org/wiki/Chari

In which country is this? For example, https://en.wikipedia.org/wiki/Charitable_contribution_deductions_in_the_United_States https://en.wikipedia.org/wiki/Charitable_contribution_deduct... says "The taxable income of the donor is reduced". To be specific, this would mean that instead of paying the tax rate on 100 million, you now pay it on 90 million.