If the world needs to invest a lot, now is not the time to extend the maturity of government debt
First, it is important to understand that quantitative easing (QE) is simply a shortening of the maturity of the government’s debt . It does this by replacing bonds on the liabilities side of a consolidated government balance sheet (government proper + central bank) with bank reserve accounts at the central bank (which are remunerated at the short-term interest rate) . Quantitative tightening (QT) is therefore an extension of the maturity of the public debt. T here is now going to be a huge need for investment and therefore for long-term borrowing: corporate investment to raise productivity gains, investment in the energy transition. With these long-term borrowing needs set to increase considerably , it is not the time to increase the government’s long-term debt.