Cost Plus Reimbursement is a type of business agreement that involves reimbursing a party for the total cost of a project and also providing them with additional compensation above and beyond said costs. This type of agreement is typically employed in situations where an employer may need to use external services and have no idea how much they will cost, or when the cost could fluctuate significantly within a short period of time. With a Cost Plus Reimbursement agreement, the employer can set up an appropriate budget for their project and then be sure of a certain payment at the end, regardless of actual costs. This makes it ideal for those needing reliable financial backing and assurance.