1. Frequent flyer miles
Employees that fly often on business can earn miles tax-free when they pay with a personal credit card for reimbursed corporate travel. When used as a rebate, the IRS permits employees to exclude frequent flyer benefits from taxable compensation. IRS Announcement 2002-18 specifically states: "This relief does not apply to travel or other promotional benefits that are converted to cash, to compensation that is paid in the form of travel or other promotional benefits, or in other circumstances where these benefits are used for tax-avoidance purposes."