After the necessary paperwork has been completed and a TSP loan check has been issued, the TSP Service Office sends paperwork to DFAS. Because there can be a timeliness issue in forwarding the paperwork, you may wish to FAX your TSP paperwork to the Retirement and Employee Benefits Branch at (301) 402-5506. Faxing this paperwork will help to ensure that the TSP loan repayment process is started in a timely manner and that the TSP Service Office is receiving your loan payments.