| List billing periods | GET | /settings/billing_periods | Returns a page of billing periods under data, with paging details under pagination. |
| Create a billing period | POST | /settings/billing_periods | Creates a billing period and returns it under billing_period. |
| Retrieve a billing period | GET | /settings/billing_periods/{billing_period_id} | Returns one billing period by its id, under billing_period. |
| Delete a billing period | DELETE | /settings/billing_periods/{billing_period_id} | Deletes a billing period. The response has no body. |
| Update a billing period | PATCH | /settings/billing_periods/{billing_period_id} | Changes the fields you send on a billing period and returns it under billing_period. |