Annual global real interest rates from 1311 to 2018, reconstructed from archival and primary sources by Paul Schmelzing (Bank of England Staff Working Paper No. 845, 2020). Covers 78% of advanced economy GDP and traces a long-run secular decline in real rates across successive monetary and fiscal regimes. Includes GDP-weighted headline global rates, safe-asset-provider rates, and country-level series for Italy, UK, Netherlands, Germany, France, United States, Spain, and Japan.