UNH and its principal investigators are jointly responsible for providing appropriate and compliant stewardship of sponsored funds and must comply with federal cost principles. Cost Principles. UNH follows four cost principles. The cost must be (1) allowable, (2) allocable, (3) reasonable, and (4) consistent. Though these principles may change depending on the project, they must be used to determine whether the costs are appropriate for a sponsored project. 1. A cost is allowable when: