What Happens to Section 8 When Your Child Turns 18?

Your voucher does not end, and your child does not have to move out. There is no age limit on household members in the Housing Choice Voucher program; an adult son or daughter can stay on the voucher for as long as they live with you. What changes at 18 is how the housing authority treats them: their earnings start to count toward household income, the dependent deduction for them usually stops, and they start signing the forms and going through the checks that every adult member goes through.

For most families the result is a higher rent share at the next recertification, not a problem with the voucher. The exception is when a student is working, and that is where the rules are most generous.

This is general information, not legal advice. Your housing authority's administrative plan controls the details. Find your agency on HUD's PHA contact list.

The Rule

Three definitions in HUD's income rules do almost all the work.

Earnings of minors do not count. 24 CFR 5.609(b) lists what annual income does not include, and one item is "earned income of children under the 18 years of age." A 16-year-old's paychecks are invisible to the rent calculation. On the 18th birthday that exclusion ends.

A full-time student's earnings mostly stay excluded. The same section also excludes "earned income of dependent full-time students in excess of the amount of the deduction for a dependent." In plain terms, a dependent who is a full-time student has only their first $500 of earnings counted in 2026. Everything above that is ignored. HUD adjusts that figure each year: it is $500 for 2026 and $525 for 2027, per HUD's published inflation tables.

The dependent deduction follows the definition of "dependent." 24 CFR 5.603 defines a dependent as a family member other than the head or spouse "who is under 18 years of age, or is a person with a disability, or is a full-time student." 24 CFR 5.611 gives a mandatory deduction for each dependent, $500 for 2026 and $525 for 2027. So at 18 your child stops being a dependent, and you lose the deduction, unless they are a full-time student or have a disability.

Nothing in the regulations ties voucher size or eligibility to a child's age. Your child simply becomes an adult member of the same family.

A Worked Example

A family of three: a parent and two teenagers. The older one turns 18 this year and works part-time, earning $12,000 a year. Rent share in the voucher program is generally based on 30 percent of monthly adjusted income. Here is what the birthday does to the household's adjusted income under the 2026 figures.

The difference between the second and third rows is the whole story. The same $12,000 job raises the family's rent share by roughly $312 a month if the young adult is not in school and by about $12 if they are a full-time student. Your agency's figures will differ with your income and deductions, but the direction is the same everywhere.

When the Change Hits Your Rent

Under the current version of 24 CFR 982.516, rewritten by HUD's 2023 income rule that housing authorities have been phasing in, the agency must run an interim reexamination when adjusted income rises by 10 percent or more, with one exception that matters here: "The PHA may not consider any increase in the earned income of the family when estimating or calculating whether the family's adjusted income has increased, unless the family has previously received an interim reduction" during the certification period. The agency may also skip interims in the last three months of a certification period.

In practice that means a teenager's newly countable paycheck usually shows up at the next annual recertification rather than in a mid-year rent jump. Two agencies say so for the paperwork side: Philadelphia requires a household member who "turns 18 between regular recertifications" to provide a government-issued photo ID "at the household's next regular recertification," and Los Angeles (HACLA) requires it "at the first reexamination of income following their 18th birthday."

Report the job anyway when your agency's policy asks you to. The same regulation says that if a family fails to report a change on time, any resulting rent increase is applied retroactively. Your agency's plan sets what must be reported between recertifications.

The Paperwork at 18

Every adult member signs and gets checked. Philadelphia's plan is typical: "All members of the household who are 18 years or older must sign the required release/consent forms, the Declaration of Citizenship form and any other documents or forms required." Philadelphia even has a parent sign the criminal-background consent on behalf of a household member who will turn 18 before lease-up, so the check can run on time.

Expect, at the first recertification after the birthday:

• a government-issued photo ID for the new adult;
• their signature on the HUD and agency consent forms;
• proof of income, or a statement that they have none;
• proof of full-time enrollment if you want the student rules applied (a registrar's letter or class schedule showing full-time status for the term).

The new adult is also now bound by the family obligations in 24 CFR 982.551 in their own right. A criminal-activity problem involving an adult household member can put the whole family's assistance at risk, the same as with any adult. What can make you lose your Section 8 voucher covers those grounds.

Does Turning 18 Change the Voucher Size?

Usually not by itself. Voucher size comes from the agency's subsidy standards under 24 CFR 982.402, which must provide "the smallest number of bedrooms needed to house a family without overcrowding." Most agencies assign bedrooms by the number of people and their sex, not by age:

• NYCHA's occupancy chart counts persons of the same or different sexes. Two people of the same sex share one bedroom, whatever their ages.
• New Jersey DCA sizes vouchers by household size alone (for example, 2 to 4 people for a two-bedroom).
• Philadelphia uses two persons per bedroom, with one age rule that can matter: "An adult and a child of the same sex who are not more than 10 years apart in age will be required to share a bedroom," while "two adults of the same sex ... who are more than 10 years apart are not required to share a bedroom."

So in most places a birthday does not add or remove a bedroom. It can matter when it changes who counts as an adult under a local rule like Philadelphia's. If you think your family now qualifies for a larger unit, ask at recertification. Can you rent a 2-bedroom with a 1-bedroom voucher explains how voucher size and the apartment you rent interact.

What About College?

If your 18-year-old stays home and goes to school full time, the student rules above protect most of their earnings, and you keep the dependent deduction.

If they go away to college, what matters is where they live. Each agency's plan says how it treats a student living away at school. Philadelphia's is a clear example: a family member who "attends school away from home" will "continue to be considered a family member unless information becomes available to PHA indicating that the student has established a separate household," and "space may be provided for a family member who is away at school but who lives with the family during school recesses." If they set up their own household and want their own assistance, a separate federal rule applies: 24 CFR 5.612 bars Section 8 assistance to a student at a college or university who is under 24, unmarried, not a veteran, has no dependent child, and is not a person with disabilities (as the rule defines it), unless the student is "otherwise individually eligible" and their parents are also income-eligible. That rule is about the student's own assistance. It does not affect the family's voucher at home.

When the Adult Child Moves Out

If your 18-year-old moves out, report it. 24 CFR 982.551(h) says "the family must promptly notify the PHA if any family member no longer resides in the unit." Their income leaves the calculation, and the voucher size may shrink at the next recertification if they had their own bedroom in the agency's count. If they later want to come back, it is an add-a-member request like any other; see can my boyfriend or girlfriend live with me on Section 8 for how that request works. In New York City, how to remove someone from your Section 8 household walks through NYCHA's forms.

One reason to keep an adult child on the voucher while they still live with you: an approved adult member is the person who may be able to continue the assistance if the head of household dies or leaves. See can you transfer a Section 8 voucher to another person.

What Landlords Should Know

• Nothing changes on the lease or the HAP contract because a child turns 18. The family's rent share may change at the next recertification, and the housing authority's payment to you changes the opposite way, so the total rent stays the same.
• If the family's share rises, the agency sends you and the family a notice. Collect the new tenant share from the effective date on that notice.

Frequently Asked Questions

Does my child have to move out at 18 on Section 8?

No. There is no age limit on household members. An adult child can stay on the voucher as long as they live in the unit and follow the family obligations.

Does my 18-year-old's job income count for Section 8?

Yes, once they turn 18, unless they are a full-time student. For a dependent full-time student, only the first $500 of earnings counts in 2026 ($525 in 2027); the rest is excluded.

Do I lose the dependent deduction when my child turns 18?

Yes, unless your child is a full-time student or a person with a disability. In those cases they stay a "dependent" and you keep the deduction ($500 for 2026, $525 for 2027).

When will my rent go up after my child turns 18?

Usually at your next annual recertification. Under the current federal rule, housing authorities may not use an increase in earned income to trigger a mid-year rent increase unless your household got an interim decrease earlier that year. Report changes when your agency's policy requires, because unreported increases can be charged back retroactively.

Does my 18-year-old need a background check?

Housing authorities check adult members. Philadelphia, for example, requires every member 18 or older to sign the release and consent forms, including the criminal-background consent.

Will turning 18 change our voucher bedroom size?

Usually not. Most agencies assign bedrooms by the number and sex of household members. A few have age-based rules, like Philadelphia's rule for an adult and a child of the same sex who are more than 10 years apart.

My child is 18 and in college away from home. Do I report their income?

Tell the agency they are away at school and ask how its plan treats an absent student. Philadelphia, for example, keeps them as a family member unless they have set up a separate household. If they stay a family member and are a full-time student, only the first $500 of their earnings counts in 2026.

Sources

• 24 CFR 5.603, Definitions (dependent, full-time student)
• 24 CFR 5.609, Annual income
• 24 CFR 5.611, Adjusted income
• 24 CFR 5.612, Restrictions on assistance to students enrolled in an institution of higher education
• 24 CFR 982.402, Subsidy standards
• 24 CFR 982.516, Family income and composition: annual and interim examinations
• 24 CFR 982.551, Obligations of participant
• HUD, 2026 inflation-adjusted values, effective January 1, 2026 and 2027 values, effective January 1, 2027
• Philadelphia Housing Authority Administrative Plan, June 15, 2023
• Housing Authority of the City of Los Angeles, Section 8 Administrative Plan, October 2022
• NYCHA Housing Choice Voucher Program Administrative Plan, effective May 2026
• New Jersey DCA Housing Choice Voucher Administrative Plan, State Fiscal Year 2026

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