In order to start your UK Air Passenger Duty declaration, please identify the aircraft type which operated the flight. The main differentiator is the aircraft's Maximum Take-off Weight (MTOW). Aircraft over 20t pay a different rate of duty than aircraft under 20t. If you are not sure about your type of aircraft, or if your aircraft does not meet all the criteria listed for it's aircraft group (MTOW, Number of seats, Seat pitch) please contact us to determine the correct aircraft group.