When do I mark an expense as reimbursable/billable?

When an expense is incurred on behalf of the company and when the employee has to be paid back, it can be marked as reimbursed.

When an expense involves expenditure of an employee for one of his or her company’s client, it is marked as billable. This is done so that the company could send a bill to the customer.

Note: An expense can be reimbursable and billable.