Field Description - Tax - Federal Base Amount to Withhold
The Tax - Federal Base Amount to Withhold is the flat tax amount to withhold based on the Tax - Federal Gross Income Over Amount. The tax tables contain different amounts for married and single taxpayers.
Example:

If a single person's annual income is $25,000.00...
Gross Income Level = 2 (see table)
Federal Gross Income Over Amount = $10,000.00
Federal Base Amount to Withhold = $735.00
Federal Plus % of Excess Over Rate = 15.00%
$25,000.00 - $10,000.00 = $15,000.00 Excess Taxable Amount
Excess Taxable Amount $15,000.00 X % of Excess Over Rate 15.00% = Excess W/H Amount $2,250.00
Federal Tax Withholding Amount = $735.00 + $2,250.00 = $2,985.00
Tip: For more information, see Understanding Tax Calculations.
Where-Maintained: Federal & Medicare FICA Tax Table Maintenance (FEDM2 & FEDS2), Federal & Regular FICA Tax Table Maintenance (FEDM & FEDS)
Where-Used: Tax calculations
Format: 6.2 numeric