WASHINGTON — Federal Reserve Chair Janet Yellen said Wednesday that the Fed expects to continue raising interest rates gradually. And she sought to assure lawmakers that the Fed would take care not to choke off any extra growth generated by tax cuts as long as inflation stayed tame.

In likely her last appearance before Congress before she leaves the Fed in February, Yellen received praise and appreciation from Republicans and Democrats on the Joint Economic Committee, who saluted her four-year tenure.

Yellen’s testimony reinforced statements made Tuesday by Jerome Powell at his Senate confirmation hearing to succeed her as Fed chairman. President Trump chose Powell, a Fed board member, to replace Yellen, the first woman to lead the central bank, after saying he wanted to impose his own stamp on the Fed.

Yellen and Powell both stressed this week that the Fed intends to keep moving incrementally to raise rates in response to a consistently solid economy. Powell said at his confirmation hearing that he thought the case for a rate increase when the Fed meets next month was “coming together.” Indeed, most economists expect the Fed to raise rates in December for the third time this year.

In her appearance, Yellen painted a generally upbeat view of the economy, with growth achieving an annual rate above 3 percent for two straight quarters for the first time in three years. On Wednesday, the government estimated that the economy grew at a 3.3 percent annual rate in the July-September period.

Trump is pushing Congress to pass a tax cut bill this year to give the economy a boost. Republicans on the committee asked Yellen whether the Fed might end up negating any such stimulus effect by accelerating its rate hikes to prevent the economy from overheating.


“We welcome strong growth,” Yellen replied. “The Fed is not trying to stifle growth.”

She said that if economic expansion were to exceed the modest rates that have prevailed in recent years, “we will be delighted to support that. … We do not have some cap on growth that we are trying to achieve.”

But she said that in an economy already operating with unemployment at a 17-year low of 4.1 percent, she hoped any economic acceleration would be accompanied by growth in the workforce or improved worker productivity.

The tax plans in Congress are projected to raise budget deficits by $1.5 trillion over the next decade. Yellen said the rising government debt was a concern and that proposals to rescind the tax cuts if faster economic growth didn’t materialize were worth considering.

“I am very worried about the sustainability of the U.S. debt trajectory,” Yellen told lawmakers. She said long-term projections by the Congressional Budget Office that take account of rising government benefits as baby boomers retire “should keep people awake at night.”

During her four years as Fed chair, Yellen endured numerous contentious hearings before Congress, with Republicans attacking her policies and complaining that the central bank had grown too powerful and too unaccountable to Congress.


But at Wednesday’s hearing, both parties applauded Yellen for her service.

Rep. Pat Tiberi, the Ohio Republican who chairs the committee, expressed his “deepest appreciation” for the work Yellen had done.

Rep. Carolyn Maloney, D-New York, said that as the first woman to lead the central bank, Yellen had broken a major barrier.

“Your tenure has been an unqualified success by every metric,” Maloney told Yellen. “You have been one of the most successful Fed chairs in history.”

In her testimony, Yellen said that while chronically low inflation has failed to move up this year, she still believed it would resume edging toward the Fed’s 2 percent target.

“I expect that with gradual adjustments in the stance of monetary policy, the economy will continue to expand and the job market will strengthen further, supporting faster growth in wages and incomes,” she said.

The Fed kept its key interest rate at a record low near zero for seven years until December 2015. Since then, it’s raised rates four times. An additional rate hike next month would leave the Fed’s benchmark rate at a still-low 1.25 percent to 1.5 percent.

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