The notion of the monetary-fiscal policy mix has made a spectacular comeback as countries have been forced to takle the devastating economic fallout from the COVID-19 pandemic. The 23rd Geneva Report on the World Economy stresses that the desirable coordination between central banks and treasuries can only work if the credibility of their commitment to desirable long-term goals – healthy growth under price stability and public debt sustainability – is preserved and backed by a resilient institutional framework, and urges policymakers to develop a strategy aimed at regaining policy space on both sides of the mix.