Synonyms for surcharge

verb

• place too much a load on
• rip off; ask an unreasonable price
• charge an extra fee, as for a special service
• fill to an excessive degree
• fill to capacity with people
• print a new denomination on a stamp or a banknote
• show an omission in (an account) for which credit ought to have been given

noun

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