Increased government spending may be the only way out of the economic doldrums that have slowed growth and pushed the world's interest rates to record lows, says S&P Global chief economist Paul Sheard.
"I do think that fiscal policy in this post-recession environment since 2009 has been missing in action."
New York based Sheard, who visited New Zealand this week, said he was picking the next US rate hike was likely to come in December, despite some market excitement about the prospect of a September hike.
But rather than just debating the moves central banks needed to make in the short term the time had come for a much broader debate which involved "a re-think of the whole macro-economic tool-kit," he said.
"This is a discussion that you don't want to have just with the monetary policy makes, I think you need the fiscal policy at the table."