How do I withhold an extra amount for federal withholding?
An employee wants to withhold an additional amount on their federal withholding. How you will enter the extra amount will depend on which version of the W-2 Form you are using.
I'm using the new W-2 Form
You can set up the employee profile to withholding an extra amount (Modify Existing Employees). Make sure the employee is using the latest version of the calculation formula that uses the higher or standard tables. And then use the Extra Amount box or the Additional Withholding box on the Pay Codes tab > Employee tab to enter the extra amount.

Modify Existing Employees, Extra Amount box and Additional Withholding box
I'm using the old W-2 Form
Use the Extra Amount box on the Pay Codes tab > Employee tab to enter the extra amount.

Modify Existing Employees, Extra Amount box
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