if your birthday is in december nineteen fifty eight your full retirement age is sixty six and eight months and you attain full retirement age in august twenty twenty five if your birthday is in january nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in november twenty twenty five if your birthday is in february nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in december twenty twenty five if your birthday is in march nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in january twenty twenty six if your birthday is in april nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in february twenty twenty six if your birthday is in may nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in march twenty twenty six if your birthday is in june nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in april twenty twenty six if your birthday is in july nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in may twenty twenty six if your birthday is in august nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in june twenty twenty six if your birthday is in september nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in july twenty twenty six if your birthday is in october nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in august twenty twenty six if your birthday is in november nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in september twenty twenty six if your birthday is in december nineteen fifty nine your full retirement age is sixty six and ten months and you attain full retirement age in october twenty twenty six if your birthday is in nineteen sixty and later your full retirement age is sixty seven years old so add sixty seven to your birth year to find out when you attain full retirement age it will be twenty twenty seven and later