My husband receives a standard reimbursement amount for each day he is out of town and for travel back and forth. That shows on his paystub as reimbursement & per diem pay and is not taxed. My question is, he often saves money by buying his own food, staying with friends, etc and doesn't use all of his reimbursement, nor is he required to turn in receipts. Can we claim the excess amount as income and pay tax on it? Also, if we do that would that cause problems for his employer, or are they covered by using the standard reimbursement and per diem rates, which is 50 cents a mile, $75 for hotel and $25 for food per day.
