41 C.F.R. § 302-15.10 How long may my agency pay under this part?
Title 41 - Public Contracts and Property Management
Your agency may pay: (a) For transfers within the United States for a period not to exceed 2 years from your effective date of transfer, with up to a 2-year extension, under the same conditions required in §302–11.21 of this chapter; or (b) From the time you transfer to a foreign area post of duty until you: (1) Transfer back to an official station in the United States; or (2) Complete a service agreement at your post of duty and remain there, but do not sign a new service agreement; or (3) Separate from Government service.
Title 41: Public Contracts and Property Management
PART 302–15—ALLOWANCE FOR PROPERTY MANAGEMENT SERVICES
Subpart A—General Rules for the Employee
§ 302-15.10 How long may my agency pay under this part?

