In December the Fed transferred $27.5 billion to the Treasury from its interest earnings on the securities it purchased.
For the first quarter of Fiscal Year 2015-16 (October 1, 2015 - December 31, 2015), the Fed remitted $41.6 billion to the Treasury.
Like the fraternity song we used to sing in the late 1950s - early 1960s:
"Rolls in, rolls in
My God how the money rolls in."