As employers, state agencies and institutions of higher education must deduct federal income tax (FIT) from the wages of a state officer or employee. Use this form for changing information previously reported on Form CTA and for renewing your choice to report under the modified schedule.To expedite the processing of your tax returns, please file electronically or use our preprinted forms whenever possible. Complete Form W-4 so that your employer can withhold the correct federal income tax from your pay. Give Form W-4 to your employer. The new form has five steps. Employees must fill out step 1 and step 5. The prescribed forms are available in fill-in-the-blank format on this web site at UCC Forms. These instructions provide guidance to QDDs regarding the proper withholding agent status code to use when filing Form 1042 (and Form 1042-S).