You will be prompted to enter your full SSN the next time you log in to My Extension. As a result of the Taxpayer Relief Act of 1997, the law requires educational institutions to obtain a valid Social Security Number (SSN)/Individual Taxpayer ID Number (ITIN) from all US Citizens and Permanent Residents who are subject to filing a US tax return. In order for UC San Diego Extension to file the required 1098-T form with the Internal Revenue Service (IRS) concerning your enrollment and the fees you paid, we must have your valid SSN/ITIN. Students who do not provide a SSN/ITIN may be subject to a $50 fine by the IRS. If you do not have income that is subject to US tax, you are not required to supply this information to us. However, please be advised that UC San Diego Extension reports all students to the IRS whether or not you have provided a SSN/ITIN. For more information on educational tax benefits, please visit www.1098t.com, or call the IRS at 1-800-829-1040 or visit their website at www.irs.gov.