Britain deferred import duty to warehouse exit in 1803

Through the eighteenth century, British import duty was payable as soon as goods came ashore. For high-duty cargo — tea, tobacco, wine, spirits — that meant a merchant had to find the tax before finding a buyer, so capital sat frozen in a warehouse it had already been taxed out of. The same rule made smuggling worth its risks, because the reward for landing goods unseen was the whole duty rather than a margin on it.

The fix had been proposed and refused long before it was adopted. Robert Walpole's excise scheme of 1733 argued that dutiable imports should sit in secure warehouses with duty deferred until release; it was politically explosive and failed. As the Survey of London records, the question stayed 'a point of discussion for much of the eighteenth century' — and when the West India Docks were built on the Isle of Dogs from 1800, their warehouses were designed 'with a view to the eventual adoption of the warehousing system, or bonding', in anticipation of a law that did not yet exist.

Deferred duty from quayside to warehouse exit: paid only when goods left for sale, freeing capital, sparing re-exports, and undercutting smuggling.

Duty at landing acted as a capital requirement, limiting trade to those who could fund the state upfront.

Deferring to exit kept revenue per unit identical while collapsing working capital needs, widening the pool of viable merchants.

Re-exported goods never owed duty, removing the incentive to smuggle transshipments and easing enforcement.

Move a charge from the moment of entry to the moment of realized value to unlock volume and cut evasion without changing the rate.

The 1803 warehousing system let duty wait until goods left store; London's new dock warehouses were built for it before it was law. Bonded warehousing became standard customs practice worldwide and remains so: duty deferment, customs warehousing and free-zone regimes in the UK, EU, India and the US all descend from the 1803 system, and the 'bottled in bond' whiskey designation is its most visible consumer trace.