The US Federal Reserve has voted to raise the target for its benchmark interest rate by 0.25%.
US growth is also getting a boost from $1.5 trillion in tax cuts and a $300 billion increase in federal spending, with inflation at the central bank's 2 per cent target for two months.
However quarterly economic forecasts show central bankers now expect the rate to end the year at 2.4%, rather than the 2.1% projected in March. That puts the Fed on track for four rate hikes total in 2018, something the Fed hasn't done since 2006. The rate is estimated to fall 3.5% next year, through to 2020, down from the previous forecast of 3.6%. This was the second hike this year, up from March's increased range of 1.5 to 1.75 percent.
In a technical move, the central bank also made a decision to set the interest rate it pays banks on excess reserves - its chief tool for moderating short-term interest rates - at just below the upper level of its target range.
The Fed has raised rates seven times since late 2015 on the back of the economy's continuing expansion and solid job growth, rendering the language of its previous policy statements outdated.
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The higher rates should be a boon for savers, while increasing borrowing costs for households and businesses throughout the economy. Fed officials repeated their assessment that "risks to the economic outlook appear roughly balanced".
Yields have been climbing this year, as markets position for a relatively more aggressive Fed amid inflation concerns.
The bank's preferred indicator of inflation, consumer spending figures, showed annual inflation rose 2% in April or 1.8% if energy and food were excluded.
That shift came as a single FOMC member shifted his or her forecast for this year and next, breaking a virtual tie in the projections released in March. And their rate increases are addressing the "perceived threat of inflation", not an immediate inflation problem, he said.
"The Fed deserves tremendous credit for steering the economy to calmer waters, supporting what is likely to be the longest expansion in USA history while meeting inflation and employment objectives", said Stephen Gallagher, chief US economist at Societe Generale. Economic activity is projected to expand 2.4% in 2019, unchanged from the previous forecast; finally, the economy is expected to grow 2.0% in 2020, unchanged from the previous forecast.