20 C.F.R. § 416.330 : Employees' Benefits — SOCIAL SECURITY ADMINISTRATION — SUPPLEMENTAL SECURITY INCOME FOR THE AGED, BLIND, AND DISABLED — FILING OF APPLICATIONS —EFFECTIVE FILING PERIOD OF APPLICATION — Filing before the first month you meet the requirements for eligibility

If you file an application for SSI benefits before the first month you meet all the other requirements for eligibility, the application will remain in effect from the date it is filed until we make a final determination on your application, unless there is a hearing decision on your application. If there is a hearing decision, your application will remain in effect until the hearing decision is issued.

(a) If you meet all the requirements for eligibility while your application is in effect, the earliest month for which we can pay you benefits is the month following the month that you first meet all the requirements.
(b) If you first meet all the requirements for eligibility after the period for which your application was in effect, you must file a new application for benefits. In this case, we can pay you benefits only from the first day of the month following the month that you meet all the requirements based on the new application.

20 C.F.R. §416.330

64 FR 31973, 6/15/1999