Other Items Related To Form CT-1
Form CT-1 X, Adjusted Employer's Annual Railroad Retirement Tax Return or Claim for Refund
Use Form CT-1 X to correct errors on a Form CT-1 that you previously filed.
Publication 15 (Circular E), Employer's Tax Guide
This publication explains your tax responsibilities as an employer. It also includes tax tables that you need to figure the taxes to withhold from each employee.
Publication 15-A, Employer's Supplemental Tax Guide
This publication contains specialized and detailed employment tax information supplementing the basic information provided in Publication 15 (Circular E), Employer's Tax Guide.
Publication 15-B, Employer's Tax Guide to Fringe Benefits
This publication supplements Publication 15 (Circular E), Employer's Tax Guide, and Publication 15-A, Employer's Supplemental Tax Guide. It contains information for employers on the employment tax treatment of fringe benefits.
Publication 915, Social Security and Equivalent Railroad Retirement Benefits
This publication explains the federal income tax rules for social security benefits and equivalent tier 1 railroad retirement benefits. It is prepared through the joint efforts of the Internal Revenue Service (IRS), the Social Security Administration (SSA), and the U.S. Railroad Retirement Board (RRB).
Form 941, Employer's Quarterly Federal Tax Return
Employers who withhold income taxes from wages or who must pay social security or Medicare tax, use Form 941 to report those taxes.
Form 944, Employer's ANNUAL Federal Tax Return
Form 944 is designed so the smallest employers (those whose annual liability for social security, Medicare, and withheld federal income taxes is $1,000 or less) will file and pay these taxes only once a year instead of every quarter.
1011 Form 945-A (PDF)
Annual Record of Federal Tax Liability
Notice 2013-8, Application of Retroactive Increase in Excludible Transit Benefits
This notice provides guidance with respect to issues related to the enactment of section 203 of the American Taxpayer Relief Act (ATRA), Pub. L. 112-240, 126 STAT. 2313, which increased the monthly transit benefit exclusion under section 132(f)(2)(A) of the Internal Revenue Code from $125 per participating employee to $240 per participating employee for the period of January 1, 2012 through December 31, 2012.