oncost

noun

1.
(frequently plural) an expense not budgeted or not specified
incidental incidental expense minor expense
2.
the expense of maintaining property (e.g., paying property taxes and utilities and insurance); it does not include depreciation or the cost of financing or income taxes
overheads budget items operating cost operating expense overhead
3.
the expense of maintaining property (e.g., paying property taxes and utilities and insurance); it does not include depreciation or the cost of financing or income taxes
overheads budget items operating cost operating expense overhead
4.
the cost of promoting a product
promotional expense