noun
incidental expenses; ancillary costs
Refers to costs that arise in addition to the main expense, such as shipping, handling, or service fees.
商品の価格に付帯費用が加算されます。
Incidental expenses will be added to the product price.
諸経費 is a broader term for various overhead or operating expenses, while 付帯費用 specifically refers to costs incidental to a particular transaction or main expense.
Compound of 付帯 (futai, 'incidental' or 'attendant') and 費用 (hiyō, 'expense').