6. He is not as rich as he says. Nailing down Trump's personal wealth is a massive challenge. He says $10 billion. Others say $3 billion. Still others insist he is worth far less than either number. Trump takes considerable personal pride in touting his net worth and using it as a blunt instrument to respond to any charge that he has ever failed in life. Tax returns are tough to fudge; they nail down exactly how much you make in a year. Just the raw numbers. It would be hard for Trump to argue his way out of a yearly salary that doesn't befit a billionaire.