I am now age 65 and single, and I have been drawing my Social Security retirement benefit while under my full retirement age of 66. Since I was under the full retirement age for all of 2008, I could lose $1 of my Social Security retirement benefit for every $2 of 2008 earnings in excess of $13,560 ($14,160 in 2009). Also, I know that, as a single person, I could pay income taxes on my Social Security retirement benefits when ... Log in to view full article.