Income Tax Withholding Table--Single Persons--Semimonthly Payroll Period (For Wages Paid Through December 2004)--continued. Summary: This table is to figure the amount of income tax an employer is to withhold based upon the employee's filing status (Single), payroll period (Semimonthly), the amount of wages, and the number of withholding allowances claimed (1 through 10). This section lists amounts for wages “At least” $840 to “But less than” 2,140. There is a note that states: If the wages are--$2,140 and over, Use Table 3(a) for a Single person on page 36. Also see the instructions on page 34.