List your total deposits for the quarter on line 13. 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.Prepare your 941 form. If you are a paid preparer, write your SSN or your the administration of any Internal Revenue law. Preparer Tax Identification Number (PTIN) in the space. Sales tax vendors must Web File through their Business Online Services accounts if they are subject to the corporation tax efile mandate.