When related to happiness, some have said (annually) $75,000: http://www.forbes.com/sites/robertglatter/2012/07/27/how-much-money-do-you-need-to-be-happy-2/ htt

When related to happiness, some have said (annually) $75,000: http://www.forbes.com/sites/robertglatter/2012/07/27/how-much-money-do-you-need-to-be-happy-2/ http://www.forbes.com/sites/robertglatter/2012/07/27/how-muc... Others claim $161,0000: http://www.cnbc.com/id/50027184 http://www.cnbc.com/id/50027184 There was a good study about diminishing marginal utility of wealth I read a while back. I'll see if I can find and post it. Don't quote me on this, but I think $5M was a good number.