An additional charge or payment added to the usual cost or price. The airline added a fuel surcharge to the ticket price due to rising oil costs.
An overcharge; an amount charged in excess of the usual or stated price. The customer noticed a surcharge on his bill and requested a refund for the overcharge.
A penalty or additional fee imposed for a specific reason, such as late payment. The library imposes a surcharge for books returned after the due date.
(philately) A printed or stamped overprint on a postage stamp, indicating a change in its face value or purpose. The rare 1920 issue is highly prized because of its inverted surcharge.