The lending organisation predicted today that global growth will be 3.4 per cent in 2014, below its April forecast of 3.7 per cent.
The downgrade reflects much slower expansion in the US. The IMF now expects just 1.7 per cent US growth in 2014, the weakest since the recession ended five years ago. That's down from its April prediction of 2.8 per cent, mostly because of a sharp weather-related contraction in the first quarter.
The IMF also slashed its outlook for Russia's growth to just 0.2 per cent this year and 1 per cent in 2015. Russia's conflict with Ukraine has caused a sharp drop in foreign investment.
The IMF included its forecasts in a quarterly update to its World Economic Outlook report.
More From This Section
The weaker growth estimates underscore the need for central banks in advanced economies in the US and Europe to keep interest rates low, the report said. The Federal Reserve has pegged the short-term rate it controls at nearly zero for more than five years. But most economists expect the Fed to start slowly raising that rate in mid-2015.
The IMF also stressed that much of the downgraded forecast reflects temporary factors, such as harsh winter weather and a slowdown in inventory restocking in the United States. In a separate report Wednesday, the IMF said it expects the US economy to rebound in the April-June quarter at a healthy 3.5 per cent annual rate.
Growth should remain above 3 per cent in the second half of the year, it said.
But Beijing has taken steps to support growth, such as spending more on roads and other infrastructure and cutting taxes for small businesses, the IMF said. That should bolster the Chinese economy in the second half of this year.