# API Reference

## Budgets

class BudgetMixin

  This mixin makes it easy to create a `Model` that defines a budget.

class BudgetLineMixin

  The BudgetLineMixin provides the basic parts needed to structure the budget lines and define both the budgeted and actual amounts.

## Copy Budgets

class CopyBudgetMixin

  The CopyBudgetMixin is a mixin that helps copy a `BudgetMixin`.

class CopyBudgetStartMixin

  The CopyBudgetStartMixin is designed to be used with the `CopyBudgetMixin` to help copy a `BudgetMixin`.