The IRS considers almost all your income as taxable, here is a standard list of compensation items...

  • Basic salary
  • Call back, standby and overtime income
  • Airfare allowances and home leave
  • Administration allowances
  • Transportation and internet allowances
  • Education assistance
  • Settling-in allowance
  • All other cash or benefits received in-kind

Examples of income that generally aren't taxed...

  • Reimbursement of business expenses
  • Moving expenses as long as they are dollar for dollar. A lump some that you don't have to account for can be considered taxable income.
  • Living away from home expenses