Ambrogio Cesa-Bianchi, Richard Harrison and Rana Sajedi
Recent increases in interest rates around the world, following a multi-decade decline, have intensified the debate on their long-run prospects. Are previous trends reversing or will rates revert to low values as current shocks subside? Answering this question requires assessing the underlying forces driving secular interest-rate trends. In a recent paper, we study the long-run drivers of the global trend interest rate – ‘Global R*’ – in the 70 years up to the pandemic. Global R* fell by more than three percentage points from its peak in the mid-1970s, driven by falling productivity growth and increased longevity. Our results suggest that without a reversal in these trends, or new forces emerging to offset them, long-run Global R* is likely to remain low.
