levée

French lever (to raise, to lift) gave levée (a raising), from Latin levare (to raise, to lighten). A levée was originally the act of raising: raising troops, raising a siege, raising money. The English word levy entered in the 15th century primarily in the military sense — to levy an army was to raise one, to conscript soldiers. The tax sense and the military sense were interchangeable because both involved the crown compelling contributions.

Medieval English monarchs levied taxes to fund wars. The Domesday Book (1086) was commissioned by William I to determine what could be levied — a census of taxable property. Edward I's wool levy (1275) established customs duties on exported wool — one of the earliest systematic peacetime tax levies. The word 'levy' and the word 'war' were almost synonymous in medieval finance: levies funded campaigns; campaigns justified levies.

Modern levy has separated its military and tax meanings. A levy now almost always means a tax — an import levy, an environmental levy, a payroll levy. The raising of armies is now called conscription or draft, though 'levy troops' remains archaic military vocabulary. The tax sense won because it proved more frequent: governments tax continuously but conscript intermittently.

The word captures something important about tax: it is a raising, a lifting of resources from where they sit to where the government needs them. The levée picks things up and carries them away. Not a purchase (voluntary), not a gift (conditional), not a fine (punitive) — a levy is a compulsory raising of what is owed, whether you agree to owe it or not.