Before 1/1/87 the NMISSS computed benefits using different entitlement and computation rules. Individuals entitled before 1/1/87 continue to receive benefits computed under NMISSS rules.

NMISSS rules for computations are used. These NMISSS computations are performed by the staff of the Saipan FO.

For individuals entitled under NMISSS rules, additional NMISSS earnings for years prior to 1987 are included under NMISSS rules. Earnings for 1987 or later can only be included by recomputing the benefit using Title II rules. If this results in a larger benefit, the beneficiary will have all future benefits computed under Title II rules.