Originally Posted by
AA_EXP09
Aren't free tickets exempt from XF, ZP, US?
Yes.
The tax US1 or US2 (US DOMESTIC AND INTERNATIONAL TRANSPORTATION TAX) say "14 DISCOUNT- * FREE TICKET IS EXEMPT. " Note: a YQ-paying ticket is not a free ticket (duh!)
Tax ZP (SEGMENT TAX) says "** APPLIES TO - -ONLY WHEN DOMESTIC US TRANSPORTATION TAX IS ALSO APPLICABLE".
Not sure about XF (PASSENGER FACILITY CHARGES), but most of them are marked "¤ FREQUENT FLYER EXEMPTION APPLIES" which I assume means that awards are exempt.