20 C.F.R. § 404.242 Use of old-start primary insurance amount as guaranteed alternative.
Title 20 - Employees' Benefits
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.
Title 20: Employees' Benefits
PART 404—FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950– )
Subpart C—Computing Primary Insurance Amounts
Old-Start Method of Computing Primary Insurance Amounts
§ 404.242 Use of old-start primary insurance amount as guaranteed alternative.