[stuartcr]

What is the $ amount where the top 10% begins?

[jjotto]

Much less than most think. One claim:

http://www.usnews.com/opinion/blogs/economic-intelligence/2012/06/13/top-10-percent-is-hurting-less-after-recession-and-should-pay-more

...a family income of $142,300 or more in 2010 would have put you in the top 10 percent of income; a net worth of $952,500 would have put you in the top 10 percent of wealth...