He pays 30% income tax, 15% payroll, 15% social security and medicare, then accrue a tax of 30% on his estate. That adds up to 90%. Don't question it. Or maybe

He pays 30% income tax, 15% payroll, 15% social security and medicare, then accrue a tax of 30% on his estate. That adds up to 90%. Don't question it. Or maybe he has untaxed (or lowly taxed) assets that are crashing, and moderately taxed salary. Lose 3 million due to crashing assets (untaxed), make 4 million salary with a 25% tax rate, and your total tax rate is 100%. But that wouldn't be a typical year.