annuitas

Medieval Latin annuitas derived from annus (year). The word described any payment or right that recurred annually — a yearly income, a rent paid once a year, a stipend that arrived each Michaelmas or each harvest. In medieval ecclesiastical and legal writing, annuities were common instruments: a gift to a church in exchange for annual masses, a payment secured against land, a pension for a retiring official.

English adopted annuity by the 14th century. The word described a fixed annual sum paid to a person, typically purchased with a lump sum payment upfront. You gave a lump sum to the Crown, a church, or a merchant, and in return you received an annual income for a fixed term or for life. Life annuities were a form of retirement income long before pension funds existed.

The South Sea Company's 1711 scheme was built on annuities — the British government's war debts were converted into shares in the South Sea Company, with annuity payments as the promised return. When the South Sea Bubble burst in 1720, thousands of annuity holders were ruined, and the word acquired a new resonance: the fragility of promised income.

Today annuities are insurance products that convert a lump sum into guaranteed income — typically for retirement. The structure is unchanged from the medieval model: pay now, receive annually. The year turns, the payment arrives. The word has outlasted every financial crisis it has witnessed.