>Under government contracting rules, there must be a nexus between the costs charged to a government contract and the objective of the contract. Thus, a contractor may charge to a government contract costs directly related to that contract, as well as indirect costs that benefit multiple contracts including the government contract. A contractor may not charge costs to a government contract, however, that have no relationship to that contract. This prohibition prevents government contractors from using taxpayer funds to subsidize non-government related work.