Bernanke said he would post from time to time — "when the spirit moves me" — and take advantage of his post-Fed freedom to discuss economic and financial issues "without my words being put under the microscope by Fed watchers."
Bernanke, who was the central bank's chief from February 2006 to January 2014, is writing as a distinguished fellow in residence at the
In his post, he pushed back against "confused critiques" of his low-interest-rate policy.
One such critique was from a lawmaker who had accused him and other members of the Fed's rate-setting panel of "throwing seniors under the bus" by keeping rates so low for so long. Bernanke said the legislator was concerned about retirees who relied on interest income from bank accounts, where rates react to fed policy.
"I was concerned about those seniors as well," Bernanke wrote. "But if the goal was for retirees to enjoy sustainably higher real returns, then the Fed's raising interest rates prematurely would have been exactly the wrong thing to do."
He argued that raising rates would have triggered an economic slowdown, which would have required the Fed to lower them again.
His post, sometimes resembling a wonky economics lesson, also rejected criticism that he had helped distort financial and economic markets by keeping rates "artificially low." He said the criticism presupposed that markets by themselves could somehow set money supply and thus fix short-term interest rates, but that was not the case.
"[The Fed] has no choice but to set the short-term interest rate somewhere," he wrote. "So where should that be? The best strategy for the Fed I can think of is to set rates at a level consistent with the healthy operation of the economy over the medium term," what he called the "equilibrium rate."
The proper equilibrium rate is determined by the state of the economy, which itself is the subject of constant debate within the Fed, he wrote.
"The state of the economy, not the Fed, is the ultimate determinant of the sustainable level of real returns," he said. And the economic factors that affect rates will be the subject of future posts, he said.
Predictably, Bernanke's blog got some attention online.