flight attendant tax EZPerDiem is tax software for flight crewmembers. It is designed to be used by pilots and flight attendants who want to take advantage of the many tax deductions available to flight crewmembers. EZPerDiem helps thousands of pilots and flight attendants get quick, accurate tax preparation, even if you have your own tax preparer or use tax software such as TurboTax. EZPerDiem essentially supplements whatever tax preparation method you use so that the flight crew portion of your taxes is always accurately prepared.