The Federal Reserve met market expectations Wednesday with another round of easing, this time with a pledge to keep interest rates low until unemployment falls below 6.5 percent and inflation tops 2.5 percent.
Economists had been expecting the Federal Reserve to accelerate its debt buying program, known as quantitative easing, to the tune of another $45 billion a month, and the central bank came through.
Coupled with its move to buy $40 billion of mortgage-backed securities a month, that would bring the Fed balance sheet expansion to another trillion dollars or so in 2013 and $4 trillion overall.
The move essentially keeps the Fed in the easing business indefinitely, as the jobless rate has been stubbornly high for the past four years and shows little inclination lower except for statistical gyrations caused by people leaving the workforce. (Read More: Job Creation Hits 146,000, Rate at 7.7%)
In its statement, the Fed's Open Market Committee said the economy is growing gradually but needs assistance in the form of the dual measures it agreed to at its final meeting of 2012.
"Taken together, these actions should maintain downward pressure on longer-term interest rates, support mortgage markets, and help to make broader financial conditions more accommodative," the committee said. (Click here for the full Fed statement.)
Following the decision, stocks rose and interest rates turned a shade lower on the day as the benchmark 10-year Treasury note yielded 1.65 percent.
The move comes as the Fed's so-called Operation Twist was winding to a close. The program entailed selling shorter-term debt and buying long-dated securities in an effort to drive down lending rates.
"While few expected the Fed to move this quickly on adopting official targets for inflation and unemployment, the premise had been floated earlier this year and so while the timing is surprising, the advance in tying these variables to the mast is not," said Andrew Wilkinson, chief economic strategist at Miller Tabak.
The Fed's unprecedented levels of intervention are aimed at keeping liquidity flowing through the financial system and are targeted specifically at bringing down the 7.7 percent unemployment rate. (Read More: Game Changer? Jobs Report 'Isn't Much News at All')
With inflation excluding energy and food costs considered tame, the Fed has felt free to continue its easing programs while economic growth remains mired and agreement on fiscal policy elusive in Washington.
"To support continued progress toward maximum employment and price stability, the Committee expects that a highly accommodative stance of monetary policy will remain appropriate for a considerable time after the asset purchase program ends and the economic recovery strengthens," the committee said.
The FOMC previous has indicated it will keep its targeted funds rate near zero until well into 2015, and Wednesday's statement simply reiterated that position.
Earlier in the year Fed Chairman Ben Bernanke coined the term "fiscal cliff" to describe the tax increases and spending cuts that will take effect automatically unless Congress agrees to a deal. The austerity triggers were put in place as deficit-reduction measures. (Read More: 'Cliff' Talks at Standstill: 'It's Getting Worse, Not Better')
He has said the central bank will do its part to keep the economy running but needs help from Washington in controlling spending but not so radically that it would constrain growth. Economists expect the country to enter recession if the full cliff-related measures take effect.
The committee made no mention of the cliff nor of fiscal policy in general in its statement.
Richmond Fed President Jeffrey Lacker was the only dissenter of the 12 voting FOMC members.
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