In the United States, they already do this. Private foundations have a little over 1%—1.1% or 1.2%—on their income, so that, in a sense, they don't touch the capital. If a donor donates money and has agreements as to how the capital is to be used, this allows a workaround. By taxing the income from that capital, that provides the same amount of funding, if you will, without touching the capital.
