Social Security benefits may be commenced at any time between ages 62 and 70. As individuals who claim later can, on average, expect to receive benefits for a shorter period, an actuarial adjustment is made to the monthly benefit to reflect the age at which benefits are claimed. In earlier work...

Despite the large and growing returns to deferring Social Security benefits, most individuals claim Social Security before the full retirement age, currently age 66. In this paper, we use a panel of administrative tax data on likely primary earners to explore some potential hypotheses of why...