The world's biggest economies will work to support global growth and better share the benefits of trade, policymakers said on Sunday after a meeting dominated by the impact of Britain's exit from Europe and fears of rising protectionism.
Philip Hammond, Britain's new finance minister, said the uncertainty about Brexit would begin to abate once Britain laid out a vision for a future relationship with Europe, which could become clearer later this year.
But there could be volatility in financial markets throughout the negotiations in the years ahead, Hammond said after the meeting of finance ministers and central bankers from the Group of 20 (G20) major economies in China's southwestern city of Chengdu.
"What will start to reduce uncertainty is when we are able to set out more clearly the kind of arrangement we envisage going forward with the European Union," Hammond told reporters.
"If our European Union partners respond to such a vision positively - obviously it will be subject to negotiation - so that there is a sense perhaps later this year that we are all on the same page in terms of where we expect to be going. I think that will send a reassuring signal to the business community and to markets."
A communique issued by the G20 ministers at the end of the two-day meeting said Brexit, which dominated discussions, had added to uncertainty in the global economy where growth was "weaker than desirable". It added that members, however, were "well positioned to proactively address the potential economic and financial consequences".
"In light of recent developments, we reiterate our determination to use all policy tools – monetary, fiscal and structural – individually and collectively to achieve our goal of strong, sustainable, balanced and inclusive growth."
The International Monetary Fund this week cut its global growth forecasts because of the Brexit vote.