JCS-5-05. Joint Committee Print. Provides an explanation of tax legislation enacted in the 108th Congress. Arranged in chronological order by the date each piece of legislation was signed into law. This document, prepared by the staff of the Joint Committee on Taxation in consultation with the staffs of the House Committee on Ways and Means and the Senate Committee on Finance, provides an explanation of tax legislation enacted in the 108th Congress. The explanation follows the chronological order of the tax legislation as signed into law. For each provision, the document includes a description of present law, explanation of the provision, and effective date. Present law describes the law in effect immediately prior to enactment. It does not reflect changes to the law made by the provision or subsequent to the enactment of the provision. For many provisions, the reasons for change are also included. In some instances, provisions included in legislation enacted in the 108th Congress were not reported out of committee before enactment. For example, in some cases, the provisions enacted were included in bills that went directly to the House and Senate floors. As a result, the legislative history of such provisions does not include the reasons for change normally included in a committee report. In the case of such provisions, no reasons for change are included with the explanation of the provision in this document. In some cases, there is no legislative history for enacted provisions. For such provisions, this document includes a description of present law, explanation of the provision, and effective date, as prepared by the staff of the Joint Committee on Taxation. In some cases, contemporaneous technical explanations of certain bills were prepared and published by the staff of the Joint Committee. In those cases, this document follows the technical explanations. Section references are to the Internal Revenue Code unless otherwise indicated.

Pub. 15 / Circular E explains your tax responsibilities as an employer. It explains the requirements for withholding, depositing, reporting, paying, and correcting employment taxes. It explains the forms you must give to your employees, those your employees must give to you, and those you must send to the IRS and the SSA. This guide also has tax tables you need to figure the taxes to withhold from each employee for 2017. References to "income tax" in this guide apply only to "federal" income tax. Contact your state or local tax department to determine if their rules are different. When you pay your employees, you don't pay them all the money they earned. As their employer, you have the added responsibility of withholding taxes from their paychecks. The federal income tax and employees' share of social security and Medicare taxes that you withhold from your employees' paychecks are part of their wages that you pay to the United States Treasury instead of to your employees. Your employees trust that you pay the with-held taxes to the United States Treasury by making federal tax deposits. This is the reason that these withheld taxes are called trust fund taxes. If federal income, social security, or Medicare taxes that must be withheld aren't withheld or aren't deposited or paid to the United States Treasury, the trust fund recovery penalty may apply. See section 11 for more information. Pub. 15-A includes specialized information supplementing the basic employment tax information pro-vided in this publication. Pub. 15-B, Employer's Tax Guide to Fringe Benefits, contains information about the employment tax treatment and valuation of various types of non-cash compensation. Pub. 535 discusses common business expenses and explains what is and is not deductible. The general rules for deducting business expenses are discussed in the opening chapter. The chapters that follow cover specific expenses and list other publications and forms you may need.