# Translations: Bundling/20/en

When a bundler is running, it checks the unconfirmed transactions pool every time a new transaction from the child chain being bundled arrives. If the transaction satisfies **any** of the bundler rules (the Minimum Rate and all filters of the rule), the bundler will generate a ChildBlock transaction, including in it this and all other currently unconfirmed child chain transactions satisfying any of the rules. The ARDR fee the bundler will include for the ChildBlock transaction is equal to the sum of the calculated ARDR fee for all child transactions (calculated by applying the Fee Calculator function and the Overpay to each child transaction). The Bundler Rules are an ordered list, the Fee Calculator and Overpay are taken from the first rule which accepts the transaction.