1 If you are already age 62, you may be able to start your benefits in the month you apply. 2  You should apply for benefits no more than four months before the date you want your benefits to start. 3  Benefits are paid the month after they are due.f you do not live in the U.S. or one of its territories you can also-Contact the nearest U.S. Social Security office, U.S. Embassy or consulate. Reminders: 1  You must be at least 61 years and 9 months old to apply for retirement benefits.