Innovation & Wealth › Medieval & Renaissance money › Commercial Revolution of medieval Europe
Church ban on usury
condemned 1139 (Second Lateran Council)· Idea or movement· Laws, labor & antitrust
Well documentedSolid records, texts or physical evidence.
The medieval Church condemned charging any interest on loans as the sin of usury.
See it on the Innovation & Wealth map →What happened
Drawing on the Bible's 'lend, hoping for nothing' and Aristotle's view that money is barren, the Second Lateran Council in 1139 denied usurers Christian burial; from 1311, defending usury was heresy. Lenders worked around it: bills of exchange hid interest in exchange rates, partnerships shared risk, and late fees compensated lost profits. Jews, not bound by Church law, were often pushed into moneylending and then resented for it. England legalized interest up to 10% in 1545.
Impact on society and the economy
It pushed European finance into disguised interest and partnerships. Its legacy survives in modern usury laws, which cap interest rates rather than ban interest.
Think of it like
Like a zero-rate cap: lenders kept lending but repackaged their return as fees, exchange margins or equity.
How we know
Church council decrees, canon-law texts, sermons, merchants' wills leaving money to repay usury, and bankers' ledgers showing interest disguised in exchange deals.
Still debated
How much the ban actually reduced lending, rather than just changing its form and raising its cost, is debated by economic historians.
Connections (2)
▸Church ban on usury was sidestepped by Medici BankWell documented
The connection
The Medici rarely made open interest-bearing loans. Instead they used bills of exchange: money advanced in Florence was repaid months later in another currency in Bruges or London, at a rate that built in a profit. Because the deal carried currency risk, theologians tolerated it.
When and how
Medici branches across Europe, 1397–1494, serving clients that included the papacy itself.
How we know
Raymond de Roover's analysis of Medici ledgers shows profits built into exchange deals; depositors received discretionary 'gifts' instead of stated interest.
Debates
How sincerely bankers and theologians believed these deals were not usury is debated; Cosimo reportedly funded the San Marco monastery partly to atone.
▸Jakob Fugger 'the Rich' sponsored a defense of interest against Church ban on usuryMostly agreed
The connection
The Church condemned charging interest as usury, though merchants used workarounds. Fugger lent at interest openly and wanted that legitimized. He backed theologian Johann Eck, later Luther's opponent, who argued that a 5% return on certain contracts was lawful, and paid for Eck's trip to debate the question at Bologna in 1515.
When and how
Augsburg, Ingolstadt and Bologna, 1514–1515; Johann Eck, Jakob Fugger and Bologna's theologians.
How sure are we?
Eck's surviving writings and contemporary accounts of the disputation; Fugger's sponsorship is reported by historians, though records of payments are sparse.
Debates
How much the debate changed actual practice is unclear; the Church's ban eroded only gradually, and Luther denounced the Fuggers by name in 1520.