Jun. 29, 1255

Law on maximum interest rate charged by Jews, passed by the City Council of Mainz [present-day Germany]: “Under penalty of 10 Cologne marks […], no Jew shall take more than two cents weekly per pound.”
Schaab, K.A. Geschichte des großen rheinischen Städtebundes, gestiftet zu Mainz im Jahre 1254 durch Arnold Walpod, Volume 2. Kupferberg: Mainz (Germany), 1845. Pp.26f. Researched by Dominik Jacobs 8/9/2019