Gross income earned by the recipient or a participant that is generated by a supported activity or earned as a direct result of a TIA. Program income includes but is not limited to: income from fees for performing services; the use or rental of real property, equipment, or supplies acquired under a TIA; the sale of commodities or items fabricated under a TIA; and license fees and royalties on patents and copyrights. Interest earned on advances of Federal funds is not program income.