Publication 15-A contains specialized and detailed employment tax information supplementing the basic information provided in Publication 15. Current revision Publication 15-A (Print version PDF | eBook EPUB) Recent developments Additional Guidance for Substitute Submissions of Form W-4 -- 29-NOV-2022 Other items you may find useful All Publication 15-A revisions Electronic Federal Tax Payment System About Form 940, Employer's Annual Federal Unemployment (FUTA) Tax Return About Form 944, Employer's ANNUAL Federal Tax Return About Form 945, Annual Return of Withheld Federal Income Tax About Form 1099-MISC, Miscellaneous Information Other current products Related publications About Publication 3, Armed Forces' Tax Guide About Publication 15, (Circular E), Employer's Tax Guide About Publication 15-B, Employer's Tax Guide to Fringe Benefits About Publication 15-T, Federal Income Tax Withholding Methods About Publication 51, (Circular A), Agricultural Employer's Tax Guide About Publication 463, Travel, Gift, and Car Expenses About Publication 505, Tax Withholding and Estimated Tax About Publication 515, Withholding of Tax on Nonresident Aliens and Foreign Entities About Publication 517, Social Security and Other Information for Members of the Clergy and Religious Workers About Publication 519, U.S. Tax Guide for Aliens