Form SSA-4-BK at a glance
What it is: Form SSA-4-BK, Application for Social Security Benefits: Child's Insurance Benefits, is how you apply on behalf of the child or children listed in item 3.
Where and when to file: Send or bring the completed form to your local Social Security office.
The Worker's children (including natural children, adopted children, and stepchildren) or dependent grandchildren (including step grandchildren) may be eligible for benefits based on the earnings record of the Worker.
If you are applying on your own behalf, answer the questions on this form with respect to yourself.
A filled-in Form SSA-4-BK example: a mother applies for her son

How to fill out Form SSA-4-BK, box by box
Life Claim or Death Claim
The Worker and you
The Worker's children

List all children who are: Under age 18; Age 18 to 19 and attending elementary or secondary school (grade 12 or lower) full-time; Age 18 or older with a disability that began before age 22.
For each child, enter the full name of child, the child's Social Security number and the Date of Birth (MM/DD/YYYY).
Check (X) if the child 17.5 or older is a Student or Disabled.
Check (X) the column that shows the child's relationship to the Worker: Natural, Adopted, Stepchild, Dependent Grandchild or Other.
Stepchildren of the Worker
Legal representative

In item 5(a), mark Yes or No: is there a legal representative (guardian, conservator, curator, etc.) for any of the children in item 3? If "Yes," complete (b) and (c). If "No," go on to item 6.
In box 5(b), write the name (First name, middle initial, last name), address and telephone number (include area code) of the legal representative(s). In 5(c), briefly explain the circumstances which led the court to appoint a legal representative.
Natural or adoptive parent
Adopted by someone other than the Worker
Children living with you

In item 8, mark Yes or No: are all the children in item 3 now living in the same household with you? If "No," for each child not living with you, enter the Name of Child Not Living With You, the Person With Whom Child Now Lives (Name and Address) and Relationship to Child. If uncertain as to the whereabouts of any of these children, explain in "Remarks".
Marriage of a child
Earnings information

If you are applying ONLY for a child age 18 or over who is disabled, omit items 10 through 13. In all other cases, answer items 10 through 13.
In item 10, mark Yes or No: did any child in item 3 earn more than the exempt amount last year? Do not complete item 10 if the Worker died this year. If "Yes," answer (b). If "No," go on to item 11.
In item 11, mark Yes or No: do you expect the total earnings of any child in item 3 to be more than the exempt amount this year? (Count all earnings beginning with the first of this year and all anticipated earnings through the end of this year.) If "Yes," answer (b). If "No," go on to item 12.
Complete item 12 ONLY if any child is now in the last 4 months of the child's taxable year (Sept., Oct., Nov., and Dec., if the taxable year is a calendar year). In item 12, mark Yes or No: do you expect the total earnings of any child in item 3 to be more than the exempt amount next year? If "Yes," answer (b). If "No," go on to item 13.
Children adopted by the Worker and living with the Worker

Complete items 14 and 15 ONLY if the Worker is living. Otherwise, go on to item 16. In item 14, if any children in item 3 are children adopted by the Worker, print below the name of each such child and the date of adoption by the Worker.
In item 15, mark Yes or No: have all of the children in item 3 lived with the Worker during each of the last 13 months (counting the present month)? If "No," enter the information requested in box 15.
Signature of applicant

Sign as applicant and enter the Date (MM/DD/YYYY). Under "I declare under penalty of perjury that I have examined all the information on this form, and on any accompanying statements or forms, and it is true and correct to the best of my knowledge. I understand that anyone who knowingly gives a false statement about a material fact in this information, or causes someone else to do so, commits a crime and may be subject to a fine or imprisonment."
Enter the telephone number(s) at which you may be contacted during the day.
Witnesses are required ONLY if this application has been signed by mark (X) in the signature box. If signed by mark (X), two witnesses to the signing who know the applicant must sign in the witness boxes giving their full addresses. Also, print the applicant's name in the signature block.
Direct deposit payment information
More rules for Form SSA-4-BK
Complete items 17 through 24 only if the Worker is deceased.
In Remarks, you may use this space for any explanations. If you need more space, attach a separate sheet.
Failure to report may result in overpayments that must be repaid and in possible monetary penalties.
Common questions about Form SSA-4-BK
What is form SSA 4 BK?
Form SSA-4-BK, Application for Social Security Benefits: Child's Insurance Benefits, is how you apply on behalf of the child or children listed in item 3. Use of the personal information collected: to determine eligibility for monthly benefits or insurance coverage and to authorize payments to the child(ren) of retired, disabled, or deceased workers.
Where do I file it?
Send or bring the completed form to your local Social Security office.
Sources
[1] Form SSA-4-BK (05-2023), Application for Social Security Benefits: Child's Insurance Benefits, Social Security Administration (the Official source link on this page).








