All employees and uniformed members may enroll and withdraw from the TSP at any time, as often as desired. However, only civilian employees under FERS are eligible for matching contributions.<ref>The law allows the Department of Defense to designate any military position as eligible for matching contributions; none has been so designated. A small pilot program, operated by the Army during the later 1980's, allowed for matching contributions for enlistees. The program has since ended and as of December 31, 2017 only six Soldiers are still serving and receiving matching contributions.</ref> | All employees and uniformed members may enroll and withdraw from the TSP at any time, as often as desired. However, only civilian employees under FERS are eligible for matching contributions.<ref>The law allows the Department of Defense to designate any military position as eligible for matching contributions; none has been so designated. A small pilot program, operated by the Army during the later 1980's, allowed for matching contributions for enlistees. The program has since ended and as of December 31, 2017 only six Soldiers are still serving and receiving matching contributions.</ref> |