Premium SMS billing or Reverse SMS billing service means that the user of the recipient phone rather than the message sender is charged for the cost of the SMS message received. It is also called MT (Mobile Terminated) Billing. Reverse-billed SMS messages are only sent if specifically requested by the phone user. A daily weather alert is an example of a service where regular reverse-billed messages are received.

In some countries, providers are required by law or regulation to provide a means of opting out of a service once it has been commenced. Most typically, this is achieved by sending a stop message (most typically, simply STOP) to the same number as the service itself.

Generating Revenue through Premium billing is big business. Want get in on the game? There are a ton of rules and regulations. These recommended Premium billing SMS text service providers will guide you through the minefield.