Standard Adjustment Deduction
There are three fields, for Single, Married or Head of Household. The value in this field is used as a standard deduction for additional adjustments, a component used to determine taxable wages.
Taxable Wages = Gross Wages - A - B - C
A = Fwt * Fed Withholding Adjustment %
B = (Exemptions * Withholding Allowance Amt) - Exemption Amt
C = Adjustment % * the larger of the two: 0, or Gross Wages - (Exemptions * Adj Withholding Allowance Amt) - Std Adj Deduction