A type of contract involving payment (reimbursement) by the buyer to the seller for the seller’s actual cost, plus a fee typically representing seller’s profit. Costs are usually classified as direct costs or indirect costs. Direct costs are costs incurred for the exclusive benefit of the project, such as salaries of full-time project staff. Indirect costs (also called overhead, and general and administrative costs) are costs allocated to the project by the performing organisation as a cost of doing business, such as salaries of management indirectly involved in the project, and the cost of electric utilities for the office. Indirect costs are usually calculated as a percentage of direct costs. Cost-reimbursable contracts often include incentive clauses where, if the seller meets or exceeds selected project objectives, such as schedule targets or total cost, then the seller receives from the buyer an incentive or bonus payment.