Airlines engaged in the interlining of passengers and cargo depend on settlement agreements to assist in the determination of each airline's revenue. These agreements are referred to as the Multilateral Prorate Agreement-Passenger and the Multilateral Prorate Agreement-Cargo.
The prorate manuals derive from these agreements. Access to the Electronic Prorate Manual Passenger (ePMP) and Prorate Manual Cargo (PMC) can be requested by e-mail to prorate@iata.org.