To what extent can public deficits increase without putting fiscal sustainability at risk, given the specific current macroeconomic situation of protracted low growth and low interest rates, combined with relatively high government debt levels? The answer depends on many factors, such as the...

This paper seeks to identify the conditions under which raising public investment can sustainably lift growth without deteriorating public finances. To do so, it relies on a range of simulations using three different macro-structural models. According to the simulations, OECD governments could...