Business Mathematics Chapter 4: Income and Taxes Terms to Know: Section 1: Earning a Living Education is the biggest factor in earning a living. The two other main factors that affect earnings is years with the business and responsibility. You may be paid your wages by salary, hourly, commission, piecework, and tip. Salaries are paid weekly, bi-weekly, or monthly. Employees who are paid hourly are paid for the number of hours worked within the pay period. If you work more than a set number of hours within a certain period, you receive overtime pay which is more than your regular pay. A commission is a percentage of a sale. A tip is given to show appreciation for a service done. Section 2: Deductions from Gross Pay Net pay is paid after deductions. Section 3: Social Security Tax The two factors that determine the amount of FICA withheld is Social Security percent and the maximum taxable income. Inflation is the increase in the money supply.