 However, you're not going to quite be able to get to that $10,000 a month in retirement on $2 million. Good news is approaching 50, if we're looking at something like the rule of 72, how long do we need to compound our dollars to double them? Well, if you earn about 7% interest, then 10 years from now, that $2 million should be closer to $4 million. Of course, now you've got a