The invention relates to a method and a device for setting up and billing a roaming communications connection between a first calling subscriber of a first communications network and a second called subscriber of the first and or another communications network who is checked into a roaming communications network. Billing data records concerning the accrued costs of the roaming connection are generated by the communications networks, are exchanged between billing systems of the communications networks, and the subscribers arc charged the costs of the roaming connection on the basis of the billing data records. According to the invention, the costs for a connection, which originates from the first, calling subscriber and which is incoming to the second, called subscriber are charged exclusively to the first subscriber under conditions individually agreed upon beforehand.