[adventured]

> Donations are really a 3 way tax break

That doesn't make sense given the sums we're talking about. If I give someone $100 million (non-charitable), I don't have to pay an extra tax on the giving, I only pay taxes on the income. You're referring to a very specific gift tax scenario.

The majority of the Gates Foundation giving is not within the US. The people on the end receiving should not pay taxes on that as it pertains to the US. Further, the Gates Foundation giving within the US will frequently end up taxed after the gift via income taxes on salaries (whether we're talking about scientists, secretaries or in the field workers receiving foundation dollars to operate as part of a charitable organization).

The scope to the triple tax premise is, in reality, dramatically more narrow.

[Retric]

According to the US tax code you really do have to pay millions in taxes on a 100 million dollar gift to someone else. If they are in another country then that country's tax code applies and they might need to pay even more money.

Here is the actual form: https://www.irs.gov/pub/irs-pdf/f709.pdf

19 If line 18 is less than line 17, enter balance due