For more detailed information on self-employment tax payments, refer to the following publications:
Publication 17, Your Federal Tax;
Publication 334, Tax Guide for Small Business;
Publication 225, Farmer's Tax Guide.
Publication 54, Tax Guide for U.S. Citizens Abroad.
Publication 595, Tax Guide for Commercial Fishermen.
You can obtain these publications from any IRS office or visit their website at: www.irs.gov.
Last Revised: Jul. 20, 2006
Social Security Handbook