overage

1. For retail leases, payments in excess of base rent that are derived from a percentage of sales. For example, a retail store in a mall might pay the lessor $10,000 per month plus 2% of sales.
2. Actual money or goods in excess of the amounts listed on the organization's books.
3. The difference between the lowest price for a loan product and any higher price paid by a borrower. For example, an overage may be in the form of points.