Where can you get telephone help? To request your refund, you must complete Form 941X, Adjusted Employer's Quarterly Federal Tax Return or Claim for Refund.This guide provides the basics of the 941 form, instructions to help you fill it out, and where you can get help meeting all your payroll tax obligations. • Lines 7a through 7c of Form 941. This guide will teach tax filers the basics of the 941 tax form along with detailed instructions to help you fill it out for your small business.