Hi,
A friend of my husband's asked this question -- I looked it up and realized it is not really easy to find out. So, is the interest on a money market account "earnings"? Is 'earnings' just employment wages, or is it the total income on the tax return?
http://www.socialsecurity.gov/pubs/10069.html seems to indicate that it is just "earned from work" income.
Let us say that you begin receiving Social Security benefits at age 62 in January 2008 and your payment is $600 per month ($7,200 for the year). During the year, you work and earn $20,480 ($6,920 above the $13,560 limit). We would withhold $3,460 of your Social Security benefits ($1 for every $2 you earn over the limit). . .