Which form must be completed to request federal income tax withheld from third-party sick pay?

To request federal income tax withheld from third-party sick pay, the appropriate form to use is Form W-4S. This specific form is designed for employees who want to request additional federal income tax withholding on certain types of payments, including sick pay that is paid by a third party, like an insurance company, rather than their employer.

Form W-4S allows the individual to specify the amount to be withheld from the sick pay, which is crucial for ensuring the correct amount of tax is deducted upfront. This is particularly important for those receiving third-party sick pay, as these payments may not be automatically subject to withholding without a specific request from the recipient.

In contrast, other forms listed serve different purposes: Form W-4 is used for withholding allowances based on an employee's tax situation for regular wages; Form W-4P is for withholding on pension or annuity payments; and Form W-5 was used for advance payments of the Earned Income Tax Credit, which no longer applies. Each of these forms addresses different tax withholding needs, highlighting the importance of selecting the correct form for the specific type of payment involved.