The IRS has very stringent rules for personal use of the corporate aircraft. Companies are responsible for determining whether employees are or are not
charged for their personal travel.
Standard Industry Fare Levels (SIFL) is used in combination with the Terminal Charge to compute a traveler's imputed income for personal travel.
SIFL rate information is released by the IRS twice a year - typically mid-
February for the first half of the year SIFL rates and mid-August for the later half
of the year.
base module will calculate the imputed income values for you and even provide a spreadsheet output that your accounting department can review on how the charges were calculated.