# API – Recurring Charge Collections

This article is going to go over the collections for recurring charges. For a list of collections, see API Collections.

#### Charge Recurring Calculation (charge.recurring.calculation)

Variable | Description |

charge.recurring.calculation.contingency | This lets you set the amount of recurring fees based on the range of different loan numbers (payment amount). |

charge.recurring.calculation.fixed | The fixed amount on a payment that stays consistent, never changes. |

charge.recurring.calculation.percentage | This is the added percentage based off of what bracket you choose (contingency, fixed, percentage). |

#### Charge Recurring Event (charge.recurring.event)

Variable | Description |

charge.recurring.event.changeduedate | This means that the due date is being changed. |

charge.recurring.event.loanactivation | This means the loan was activated on an account. |

charge.recurring.event.loanmodification | This is making loan modifications, changing the terms of a loan. |

charge.recurring.event.origination | This is the loan origination on an account. |

charge.recurring.event.paymentreversal | This is reversing a payment on an account. |

#### Charge Recurring Percentage Base (charge.recurring.percentagebase)

Variable | Description |

charge.recurring.percentagebase.apd | The amount on a loan that is past due on payments. |

charge.recurring.percentagebase.cpb | This is the current principal balance on the payment. |

charge.recurring.percentagebase.nda | This is the next due amount on the loan. |

charge.recurring.percentagebase.npa | This is the next scheduled payment amount on the account. |

charge.recurring.percentagebase.ola | This is the original total loan amount. |

#### Charge Types (charge.types)

Variable | Description |

charge.types.convenience | This is the convenience fee on the loan. |

charge.types.late | This is the late fee charge on an account. |

charge.types.nsf | This is the next scheduled fee on the loan. |

charge.types.other | This is any other fees on an account. |

charge.types.repossession | This is the repossession fee on a loan. |