Companies and institutions use different cost models when offering a premium rate number. Many numbers, thus the service, are free of charge to the caller. In Germany, toll-free premium rate numbers are typically identified by the area code 0800. Since many flat rate services include free domestic calls, toll-free premium rate numbers can also be implemented through regular local numbers for a majority of the callers.
Shared Cost services with split charges are common. These services allow the cost of the telecommunication service to be split between the provider and the caller. Depending on the type, the charges can be billed by call duration or as a flat per-call charge.
There are also premium rate numbers where the caller pays the telephone company for the service offered. They then pass part of the fee on to the company offering the service. One example for paid information services is the 0900 area code.