Lower oil prices will be sustained throughout 2015 but don't expect any boost for the majority of the world's countries, according to a global growth forecast from Moody's Investor Service.
"Lower oil prices, which we expect to be sustained, would in principle provide a significant boost to global growth," Marie Diron, senior vice-president of Credit Policy at Moody's and author of the agency's "Global Macro Outlook 2015-16" report published Wednesday.
"However, we are maintaining our G-20 forecast," she said. "For the G-20 economies, we expect gross domestic product (GDP) growth of just under 3 percent each year in 2015 and 2016, unchanged from 2014 and from our November 2014 Global Macro Outlook," Diron added.
Moody's global growth outlook is based on the assumption that the price of benchmark Brent crude oil average $55 a barrel in 2015, around its current price.
Read More$20 oil 'is still possible': Gartman