Reimbursement for temporary lodging
I am a university faculty member. I taught a course in Europe for 5 weeks during the summer for an organization that has a contract with my home university. My salary and transportation were paid by this organization. My lodging was not paid by that organization. I also have an endowed professorship at my home institution with funds to be used by me for my professional development. After being reimbursed for my lodging abroad from my professorship account, I was informed that this was not permissible because it was taxable income and that I have to return the money. Is my reimbursement for temporary lodging while teaching abroad actually taxable income?