An additional charge (as for items previously omitted or as a penalty for failure to exercise common caution or common skill)

Something added by overprinting

A surcharge, also known as checkout fee, is an extra fee charged by a merchant when receiving a payment by cheque, credit card, charge card or debit card which at least covers the cost to the merchant of accepting that means of payment, such as the merchant service fee imposed by a credit card company.

Prior to 2000 a local government officer or councillor in the United Kingdom, who had unlawfully spent public funds, or caused loss to a local authority through misconduct could be surcharged to recover public money.

Charge an extra fee, as for a special service

Rip off; ask an unreasonable price

Fill to capacity with people

Print a new denomination on a stamp or a banknote

Fill to an excessive degree

Place too much a load on

Show an omission in (an account) for which credit ought to have been given