The US collects about $1.5 trillion from income taxes per year. A bit of googling leads me to believe that about 10% of that is from capital gains so that's 150

The US collects about $1.5 trillion from income taxes per year. A bit of googling leads me to believe that about 10% of that is from capital gains so that's 150 billion. Let's say we 2x capital gains rates and (magically!) earnings from capital gains don't go down. So we have $150B for our Basic Income. There are about 300 million Americans (I rounded down to make the math easy). $150 Billion / 300 Million = $500 each per year.