The Oregon Department of Revenue is notifying taxpayers that any changes to their state withholding must be made on Form OR-W-4 as the new federal Form W-4 can’t be used for Oregon withholding purposes. The federal form doesn’t use allowances and Oregon withholding is calculated using allowances.

Previously filed Oregon or federal withholding statements (Form OR-W-4 or Form W-4), which are used for Oregon withholding, can remain in place if the taxpayer doesn’t change their withholding choices.