The Fed instructed its market agents at the New York Fed to begin executing the reduced bond purchases in the middle of this month, but only laid out that plan for November and December.
Starting in mid-November, it will buy $70 billion of Treasuries and $35 billion of MBS per month, a pace that will drop to $60 billion of Treasuries and $30 billion of MBS per month in mid-December.
Policymakers, the Fed said, judge that "similar reductions in the pace of net asset purchases will likely be appropriate each month, but (are) prepared to adjust the pace of purchases if warranted by changes in the economic outlook." If the economy continues to progress as expected, the Fed could finish tapering those purchases by the middle of next year, Powell said. He emphasized that officials have the flexibility to speed up, or slow down, the taper based on what happens in the economy.