This form is for general instructions that apply to all corporation tax forms. It includes a variety of topics about how to fill out your form.This page talks about the withholding tax on Foreign Partners' Share of effectively connected income. You must make all deposits of taxes paid with respect to Form 1042-S (including taxes withheld under either chapter 3 or chapter 4) electronically. Gov and search for withholding requirements for updates, online tools, and more information, including: Forms and Publications Withholding agents should withhold county tax based on the employee's Indiana county of residence as of Jan. This guide explains how to file the NR4 return and how to complete the T4ANR Summary and slips. CT Corporation helps keep 1.6 million entities in compliance every year, and we work with you to help ensure your company stays compliant and in good standing. CategoryName of FormAssessment AppealsAppeal Your Property Value (On-Line Appeal Application Form) Assessment Appeal Application Form Fill-In (BOE-305-AH) Search for business topics like employer tax identification number (EIN) information, with the A-Z Index.