As of mid-August 2015, Buffett's net worth is $67 billion, making him one of the richest billionaires in the world, behind Bill Gates and Carlos Slim Helu. At 84, Buffett shows no signs of stopping anytime soon. And while he might have an 11-figure fortune, Buffett reportedly earns only $100,000 a year at Berkshire Hathaway and spends it frugally.