Charitable 501(c)(3) organizations receive tax-exempt status because their missions are to benefit society, and the majority of their revenue goes toward achieving their tax-exempt purpose. Yet, many such organizations also operate retail ventures such as a museum gift shop or a hospital-run thrift shop. Proceed cautiously, however, because although commercial-like activities can help generate after-tax income, straying too far into commercial territory can cause revocation of your exempt status.