45 CFR § 2522.245 - How are living allowances disbursed?
A living allowance is not a wage and programs may not pay living allowances on an hourly basis. Programs must distribute the living allowance at regular intervals and in regular increments, and may increase living allowance payments only on the basis of increased living expenses such as food, housing, or transportation. Living allowance payments may only be made to a participant during the participant's term of service and must cease when the participant concludes the term of service. Programs may not provide a lump sum payment to a participant who completes the originally agreed-upon term of service in a shorter period of time.