20 CFR § 404.242
Use of old-start primary insurance amount as guaranteed alternative
February 18, 2021
If your primary insurance amount as computed under the old-start method is higher than your primary insurance amount computed under the average-monthly-wage method, your old-start primary insurance amount will serve as the guaranteed alternative to your primary insurance amount computed under the average-indexed-monthly-earnings method, as described in §404.230. However, earnings that you have in or after the year you reach age 62, or become disabled or die before age 62 are not used in an old-start computation in this situation.