He is under no obligation to pay taxes he does not owe. Tax deductability of charitable giving is effectively government spending, so take it up with your lawmakers if you don&#x27;t want that. It has no bearing on Zuckerberg from a legal perspective, and since I&#x27;m not out to judge him, I don&#x27;t really care if he decides to spend his money on a foundation or give it to the government.