# UsageAllowance

Type: object

The allowance the usage months of a billing period of two months or more pool, such as a year: overage.includedQuantity a month for each month of the period. Overage starts once the period has used it up. After a plan change the new plan's allowance pools from the next usage month.

## Properties

- `periodStart` (string, required)
- `periodEnd` (string, required)
- `includedQuantity` (integer, required)
- `usedQuantity` (integer, required) - Active contacts the period's usage months counted so far, each month counting a contact once.