Gordon Brown is to hold talks later with President Bush at the White House about the global financial crisis, reported BBC.
Mr Brown will speak to the UN General Assembly in New York before heading to Washington for the meeting at 1620 local time (2120 BST).
US political leaders are continuing talks on a $700bn (£380bn) bail-out plan to revive the finance sector.
On Thursday, the PM urged leaders not to use the crisis as an excuse to abandon efforts against global poverty.
Mr Brown, who is in the US with other world leaders for a UN development summit, has offered support for the US financial rescue package.
Mr Bush has proposed the US government take on the debts of struggling financial firms in an an attempt to keep them afloat and also prevent a recession.
The prime minister told the BBC that quick action was needed to stabilise the economic situation and said longer-term reforms to the world's financial system were also needed.
Mr Brown held meetings with Tim Geithner, president of the Federal Reserve Bank of New York, and a number of Wall Street asset management chiefs.
He also addressed the UN on the efforts to meet the Millennium Development Goals to reduce poverty and improving education and health care in the developing world by 2015.
Along with Microsoft boss Bill Gates, Mr Brown later announced a new $3bn drive to eradicate deaths from malaria.