Of expenses or charges; = incidental, adj. 1b.

Of a charge or expense: Such as is incurred (in the execution of some plan or purpose) apart from the primary disbursements.

Economics and Finance. Designating expenditure already incurred, esp. capital already invested, which cannot easily be recovered, frequently because…

Of or relating to sumptuary laws or regulations (see sense A. 1). Also more generally: of or relating to personal expenditure or consumption.

Of or pertaining to the work and expenses which cannot be apportioned to any particular job or undertaking, pertaining to overhead charges and…

Accounting. Designating or relating to overhead expenses or costs.

Of costs or expenses: incurred in the upkeep or running of a plant, premises, or business, and not attributable to individual products or items.

colloquial. An all-up weight. Also (originally and chiefly Australian): an all-up cost, payment, or expenditure.

Originally U.S. Of costs, etc.: that are passed on to the buyer; chargeable to the customer.

That has been internalized (in various senses).