When is the "single rate" or the "dependant rate" used in the rental subsidy calculation to determine the threshold percentage rate?

The rental subsidy calculation is a complex formula using several main contributing factors: your duty station and what is considered to be the highest reasonable rent level you should pay in that location (maximum rent level), the actual amount of rent you pay (lease), your family composition and your income (grade level and step). The "dependant rate" is used if a staff member's spouse and/or child has been recognized as an eligible dependant by the Organization and the salary is at the dependency rate. If no spouse or child is recognized as an eligible dependant, the salary is at single rate and the "single rate" is used in calculating the rental subsidy.