Apparently his net worth is 5.4 billion, so this’d be something like 4% of what he’s worth?
We’re talking income taxes here. You’re not taxed on net worth. Income taxes are what you brought in (in cash) for that year. Since he said in the article is nearly all long term cap gains taxes that means he sold stock or assets totaling about $1.375 billion in 2023. As in, with the sale of those assets thats how he had a taxable income large enough to generate that tax bill. Note: long term cap gains taxes are at a 20% rate.