surcharge definition
The definition of a surcharge is an extra fee added to the regular cost. If you are told that your item will cost $100 but if the price of gas goes up and you then have to pay an extra $10 for delivery, this extra $10 is an example of a gas surcharge. Surcharge is to add an additional charge to the cost. An example of a surcharge is an extra $5 added to the plumber's bill to cover the increased distance that he needed to travel outside of his regular service area to reach the home.