Dependents who are required to file a tax return must have an SSN. To apply for an SSN, file Form SS-5 with the Social Security Administration. You can go to the website www.socialsecurity.gov for more information.

The IRS will issue an ITIN to a nonresident or resident alien who does not have and is not eligible to get an SSN. To apply for an ITIN, file Form W-7, Application for IRS Individual Taxpayer Identification Number, with the IRS. It takes 6-10 weeks to get an ITIN. The ITIN is entered wherever an SSN is requested on a tax return. If you are a nonresident alien applying for an ITIN to file a tax return, you generally must attach your original, completed return to Form W-7 to get an ITIN. If you are required to include another person's SSN on your return and that person does not have and cannot get an SSN, enter that person's ITIN.

An ITIN is for tax use only. It does not entitle you to social security benefits or change your employment or immigration status under U.S. law.

The Internal Revenue Service is a proud partner with the National Center for Missing and Exploited Children. Photographs of missing children selected by the Center may appear in this publication on pages that would otherwise be blank. You can help bring these children home by looking at the photographs and calling 1-800-THE-LOST (1-800-843-5678) if you recognize a child.

Part 1 of this publication explains the filing requirements and other tax information for individuals who can be claimed as a dependent on another person's tax return.

Part 2 explains how to report and figure the tax on investment income of certain children (whether or not they can be claimed as dependents).

Many of the terms used in this publication, such as "dependent," "earned income," and "unearned income," are defined in the Glossary at the back of this publication.

We welcome your comments about this publication and your suggestions for future editions.

You can write to us at the following address:

Internal Revenue Service 
Individual Forms and Publications Branch 
SE:W:CAR:MP:T:I 
1111 Constitution Ave. NW, IR-6526 
Washington, DC 20224

We respond to many letters by telephone. Therefore, it would be helpful if you would include your daytime phone number, including the area code, in your correspondence.

You can email us at *taxforms@irs.gov. (The asterisk must be included in the address.) Please put "Publications Comment" on the subject line. You can also send us comments from www.irs.gov/formspubs/, select "Comment on Tax Forms and Publications" under "Information about."

Although we cannot respond individually to each comment received, we do appreciate your feedback and will consider your comments as we revise our tax products.

Visit www.irs.gov/formspubs/ to download forms and publications, call 1-800-829-3676, or write to the address below and receive a response within 10 days after your request is received.

Internal Revenue Service 
1201 N. Mitsubishi Motorway 
Bloomington, IL 61705-6613

If you have a tax question, check the information available on IRS.gov or call 1-800-829-1040. We cannot answer tax questions sent to either of the above addresses.

See How To Get Tax Help near the end of this publication for information about getting these publications and forms.

This part of the publication discusses the filing requirements for dependents, who is responsible for a child's return, how to figure a dependent's standard deduction and exemption (if any), and whether a dependent can claim exemption from federal income tax withholding.