The form is designed to document the “business” mileage driven by the travel nurse so that the travel allowance paid can be treated as nontaxable compensation. “Business” miles include the miles to and from the tax home, to the assignment housing, and the workday round trip from the assignment lodging to the client’s worksite. As long as the form is completed in a timely manner and the travel nurse meets the three tax rules (1. has a tax home, 2. assignment, including extensions, is less than a year, 3. assignment is not within commuting distance) the reimbursement will be treated as a non-taxable reimbursement.