| Connected Account | The connected account to use for the request | Connected Account | Yes | |
| Account ID | | Text (Short) | Yes | |
| Project ID | The ID of the project associated with this expense | Text (Short) | Yes | |
| Expense category ID | The ID of the expense category this expense is being tracked against | Text (Short) | Yes | |
| Spent date | Date the expense occurred | Date | Yes | |
| Billable? | Whether this expense is billable or not. Defaults to true | True/False | No | |
| Notes | Notes about the expense | Text (Long) | No | |
| Total cost | The total amount of the expense | Text (Short) | No | |
| Units | The quantity of units to use in calculating the total_cost of the expense | Text (Short) | No | |
| User ID? | The ID of the user associated with this expense. Defaults to the ID of the currently authenticated user | True/False | No | |