Learning Center

• Frequently Asked Questions
• Software User Guide
• Base aircraft valuation formula (also known as Standard Industry Fare Level formula or SIFL) Basics
• Internal Revenue Code Section 274(c) Foreign Travel Adjustments
• Internal Revenue Code Section 274 Entertainment Disallowance Rules
• Internal Revenue Code Section 280F Qualified Business Use Basics.
• Calculate distance (statute miles, kilometers, nautical miles) between Airports and air fields.