Calculating costs Janet is working for a consulting firm making $50,000 per year but considers starting her own consulting company. Janet has determined that to launch the business, she needs to invest $80,000 of her own funds. The annual cost of running the business will include $70,000 for the rent of the office space, $210,000 for employee wages, and $5,000 for materials and utilities. Janet plans to manage the business, which means that she will have to quit her current job. Suppose that the interest rate (or rate of return) on investments in the economy is 5%.