Nonprofit organizations are exempt from federal income tax except for income from any activities that are unrelated to the nonprofit's charitable purpose. An example is the use of a laboratory for both tax-exempt basic medical research and for testing a taxable product for commercial pharmaceutical firms. A concern in these cases is that the tax-exempt nonprofit organization will be able to compete unfairly with for-profit firms because of their tax-exempt status. The key argument is that common costs for the nonprofit's exempt and business activities will be used to "subsidize" the for-profit business (in this case, the taxable product testing).

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How would cost allocation play a role in affecting the operating results of a nonprofit organization which has both business and charitable activities?