Systematic Withdrawal Plan - SWP

See: Systematic Withdrawal Schedule. Same thing, only with a plan. As in, "I have a million bucks; it's invested in securities that should go up about, eh, 6% a year on average. If I take out 10 grand a month, how long until that million is zip?"

In year one, 6% growth on a million (ignoring taxes for now) is $60k, but you're withdrawing $120k, so that at the end of the year, you'll have $940k. Then it grows 6%, or about $57k, and you withdraw $120k, so now $63k is gone from the original million dollar kitty, leaving about $877k. And the process continues for another 2 decades, until you're so old, well, you just don't care what's left.