The US economy contracted again in the second quarter amid aggressive monetary policy tightening from the Federal Reserve to combat high inflation, which could fan financial market fears that the economy was already in recession.

Gross domestic product fell at a 0.9 percent annualised rate last quarter, the Commerce Department said in its advance estimate of GDP on Thursday. Economists polled by Reuters had forecast GDP rebounding at a 0.5 percent rate.

Estimates ranged from as low as a 2.1 percent rate of contraction to as high as a 2 percent growth pace.

The US economy contracted at a 1.6 percent pace in the first quarter.

The second straight quarterly decline in GDP meets the standard definition of a recession.

But the National Bureau of Economic Research, the official arbiter of recessions in the United States defines a recession as "a significant decline in economic activity spread across the economy, lasting more than a few months, normally visible in production, employment, real income, and other indicators."

Job growth averaged 456,700 per month in the first half of the year, which is generating strong wage gains. Still, the risks of a downturn have increased. Homebuilding and house sales have weakened while business and consumer sentiment have softened in recent months.

The White House is vigorously pushing back against the recession chatter as it seeks to calm voters ahead of the November 8 midterm elections that will decide whether President Joe Biden's Democratic Party retains control of the US Congress.

Treasury Secretary Janet Yellen is scheduled to hold a news conference on Thursday to discuss the state of the US economy.

While labour market remains tight, there are signs it is losing steam.

A separate report from the Labour Department on Thursday showed initial claims for state unemployment benefits decreased 5,000 to a seasonally adjusted 256,000 for the week ended July 23. Economists polled by Reuters had forecast 253,000 applications for the latest week.

Jobless claims remain below the 270,000-350,000 range that economists say would signal an increase in the unemployment rate. Slowing economic growth could, however, encourage the Fed to step back from hefty interest rate increases, though much would depend on the path of inflation, which is way above the US central bank's 2 percent target.

The Fed on Wednesday raised its policy rate by another three-quarters of a percentage point, bringing the total interest rate hikes since March to 225 basis points. Fed Chair Jerome Powell acknowledged the softening economic activity as a result of tighter monetary policy. (Reuters)