A Social Security worksheet is available from the Forms and Publications page of the IRS website, according to the Internal Revenue Service. The Social Security worksheet is located on page 29 of the IRS publication Instructions for Form 1040, as of 2015.
The Social Security Benefits Worksheet is used to determine if any of a person's Social Security benefits are taxable. At the IRS website, taxpayers can download the publication in PDF format. It is also possible to order a copy sent by U.S. Mail, using an online form. To find the form, visit IRS.gov, and enter the Forms & Pubs page, then identify the form titled "Instructions for Form 1040."