IRS.gov: Publication 907 IRS.gov: Social Security and Railroad Retirement Benefits Publication 907 Internal Revenue Service: Publication 507 -- SSI Payments IRS: Publication 907 http://www.irs.gov/publications/p907/ar02.html IRS: Publication 907 Disability income. irs.gov Publication 907 http://www.irs.gov/publications/p907/ar02.html Medical expenses Internal Revenue Service: Publication 907 Child and dependent care expenses Child and dependent care credit Supplemental security income (SSI) payments Free tax services IRS: Tax Highlights for Persons with Disabilities