Interesting, like 'rashkov' that's much higher than I would have guessed. It does look authoritative, although part of the disparity may be that the "administrative" estimates of wealth are much less than other presumably more accurate measures.

This paper gives a more up to date chart on P. 62 in Table C.3: http://www.federalreserve.gov/econresdata/feds/2015/files/20...

  Table C.3. Net Worth Fractile Thresholds (Thousands $)
  SCF Bulletin Wealth, HHDs 
                      1989   1992   1995   1998   2001   2004    2007   2010   2013
  90th Percentile      364    357    381    494    740    834     910    953    942
  99th Percentile    2,251  2,318  2,460  3,793  5,787  6,356   8,360  6,815  8,155
  99.9th Percentile  9,703  9,207 13,898 15,346 20,338 25,109  30,826 27,488 30,894

I chose the top line for each percentile, which gives the highest figures, but it's possible that one of the "adjusted" numbers is more appropriate. It's interesting to me that over the time period from 1989 to 2013, the 90th, 99th, and 99.9th percentiles have all basically tripled.

The summary, in case the chart is hard to read, is that for 2013, the 90th percentile threshold for household wealth is about 1 million dollars, the 99th is about 8 million, and the 99.9th is about 30 million. The adjusted estimates (see the paper) are generally 10-30% lower.