#### Tariff link

Tariff link is an object connecting a tariff plan to an account. Tariff links are created, modified or deleted via the user details window (see Tariff links). Prior to tariff link creation, an account has to be selected to associate the link with.

Tariff link is characterized by the following parameters:

- Current tariff plan is the tariff plan that is acting now.

- Next tariff plan is the tariff plan to switch to by the end of accounting period. May be selected at any time during the current period. Must be compatible with the current plan. If set to Do not change, the tariff link together with all its service links will be prolonged onto the next period. If set to Disable TP (this can be done by editing, but not during the creation of the tariff link), the tariff plan will be disconnected and all its service links lost.

- Change now allows to change the tariff plan before the end of the accounting period. The price of the periodic services will be recalculated in that case.

- Accounting period is the period of validity of the current tariff plan. Must be selected from the list of accounting periods (see Accounting periods) by pressing Select. At the end of the period the tariff plan switch occurs.

After setting the necessary parameters and pressing the system will prompt to create the service links for the services having Attach by default checked. Other services must be added later by pressing Add service link in the tariff link details window.