PDFWAC 308-57-110
RTA excise tax fee schedule.
Vehicles with the following use classes are assessed RTA excise tax as defined in RCW 81.104.160:
CAB (taxicab)
COM (commercial) (if powered and the scale weight is six thousand pounds or less)
CYC (motorcycle)
F/H (for hire) (if six or fewer seats or if more than six seats and the scale weight is six thousand pounds or less)
LOG (if powered and under six thousand pounds scale weight or if nonpowered)
MH (motor home)
PAS (passenger)
PER (nonpowered personal use trailer)
STA (stage) (if six or fewer seats or if more than six seats and the scale weight is six thousand pounds or less)
TLR (nonpowered trailer)
TRK (if the scale weight is six thousand pounds or less)