I like to read articles about personal finance and investing. The gist of it is that the youngest one can claim retirement (as opposed to disability) Social Security is 62, but it is at a reduced rate -- a lot of people are under the impression that it is somehow recalculated when they get older, but aside from cost of living increases which everyone on Social Security gets, it does not get recalculated at a higher rate. The monthly payment increases by a certain percentage every year you hold off claiming until full retirement age, which is somewhere between 66 and 67 for people born after 1943, with a difference of several months at varying ages, with 67 being the full retirement age for folks born 1960 or later. If you hold off claiming until 70, the monthly payment will increase even more, by about 8% per year. It doesn't get any higher after age 70, so it doesn't pay to wait to start payments any later than that. Of course, you'd be getting the smaller monthly payments for more years if you claimed earlier, so you have to decide what's right for you. Lots of articles on-line from places like money.com or kiplinger.com where you can find articles about this.