W-4 and State Withholding Forms

All 2025 new hires must complete a W-4 and some states have released new withholding forms.

Unless changes are required, employees who have submitted a W-4 anytime before 2025 are not required to submit a new form. Employers will compute withholding based on information from the employee’s most recently submitted W-4. We collect a state withholding form along with the Federal W-4 in most states.

You can download the Federal W-4 here and download the state forms from the links below. We also updated our digital platform to include custom forms for every state’s withholding form.

For additional details about Form W-4, please refer to the IRS site here.

This information is general in nature, and is not intended, nor should it be construed, as legal, accounting, tax or other professional advice rendered by GreenSlate, LLC. The reader should contact his or her attorney, CPA, or tax professional prior to taking any action based upon this information.