About Publication 15, (Circular E), Employer's Tax Guide Publication 15 explains an employer's tax responsibilities for withholding, depositing, reporting, and paying employment taxes. Includes the tax tables needed to figure the taxes to withold from each employee. This publication explains your tax responsibilities as an employer. About Publication 15-A, Employer's Supplemental Tax Guide, (Supplement to Pub. 15, Employer's Tax Guide) Publication 15-A supplements Circular E, and contains specialized and detailed employment tax information supplementing the basic information provided in Circular E (Pub. 15). About Publication 15-B, Employer's Tax Guide to Fringe Benefits Information about Publication 15-B, Employer's Tax Guide to Fringe Benefits, including recent updates and related forms. Publication 15-B is for employers who provide fringe benefits to employees, and is used to determine whether the benefits are taxable. About Publication 51, (Circular A), Agricultural Employer's Tax Guide Information about Publication 51, (Circular A), Agricultural Employer's Tax Guide, including recent updates and related forms. Publication 51 contains information on Social Security and Medicare taxes, FUTA, and withheld income tax for agricultural labor for employers of agricultural workers. About Publication 179 (Circular PR), Federal Tax Guide for Employers in Puerto Rico Publication 179 is for employers in Puerto Rico. It contains information for the withholding, depositing, paying, and reporting of employer and employee taxes under the Federal Insurance Contributions Act (FICA). About Publication 334, Tax Guide for Small Business (For Individuals Who Use Schedule C) Publication 334 contains general information about the federal tax laws that apply to small business owners who are sole proprietors or statutory employees. About Publication 542, Corporations Publication 542 discusses the general tax laws that apply to ordinary domestic corporations. About Publication 926, Household Employer's Tax Guide Information about Publication 926, Household Employer's Tax Guide, including recent updates and related forms. Publication 926 will help you decide if you have a household employee, and if you need to pay federal employment taxes. It explains how to figure, pay, and report those taxes. About Publication 947, Practice Before the IRS and Power of Attorney Publication 947 discusses who can represent a taxpayer before IRS and what forms or documents are used to authorize a representative. Usually, attorneys, CPAs, enrolled agents, and enrolled actuaries can represent taxpayers before IRS. This publication discusses who can represent a taxpayer before the IRS and what forms or documents are used to authorize a representative. Publication 966, Electronic Federal Tax Payment System (EFTPS) (PDF) EFTPS is the free Electronic Federal Tax Payment System provided by the U.S. Department of the Treasury. Publication 1635, Employer Identification Number Understanding Your EIN (PDF) This publication provides general information on Employer Identification Numbers (EINs).