****** Design ****** The *Account Rule Module* introduces the following concepts: .. _model-account.account.rule: Account Rule ============ An *Account Rule* allows an account to be substituted for another based on a set of criteria. The substitution is determined by the first matching rule. The account rule contains a set of properties, such as the original `Account <account:model-account.account>`, the `Tax <account:model-account.tax>`, or a date range. These are used to work out if the account rule matches the account used. .. seealso:: The available account rules can be found by opening the main menu item: |Financial --> Configuration --> General Account --> Account Rules|__ .. |Financial --> Configuration --> General Account --> Account Rules| replace:: :menuselection:`Financial --> Configuration --> General Account --> Account Rules` __ https://demo.tryton.org/model/account.account.rule