You can claim a foster child as a dependent on your federal return if the child was placed with you by a government agency, a qualifying tribal government, a licensed placement organization, or a court, and if the child meets the IRS qualifying child tests. Claiming a foster child as a dependent opens the door to the Child Tax Credit of up to $2,200, potential Earned Income Tax Credit eligibility, Head of Household filing status, and several smaller credits. The main obstacles are proving the child lived with you long enough and having a valid Social Security Number to put on the return.
The Five Tests Your Foster Child Has to Pass
The IRS uses the same qualifying child framework for foster children that it uses for biological children. Every test has to be met. Miss one and the child is not your dependent for the year.
- Placement. The child has to have been placed in your home by a state or local government agency, a qualifying tribal government, a tax-exempt licensed placement organization, or a court order. That placement is what satisfies the relationship test.1Internal Revenue Service. Qualifying Child Rules
- Residency. The child has to have lived in your home for more than half the tax year. Temporary absences for school, medical care, or similar reasons still count as time with you. If the child was placed with you partway through the year, the clock starts on the placement date.1Internal Revenue Service. Qualifying Child Rules
- Age. The child has to be under 19 at year end, or under 24 if a full-time student for at least five months of the year. There is no age limit if the child is permanently and totally disabled at any point during the year.1Internal Revenue Service. Qualifying Child Rules
- Support. The child cannot have provided more than half of their own support during the year. Foster care payments from the state or a placement agency count as support from that agency, not from the child, which means this test is almost always satisfied in foster situations.2Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
- Joint return. The child cannot have filed a joint tax return with a spouse for the year, unless the return was filed only to claim a refund.
The child also has to be younger than you (or your spouse, if filing jointly). That rarely matters in foster settings, but it is a formal requirement.
You Need a Social Security Number Before You File
Even a child who passes every test cannot be claimed without a valid Social Security Number on a timely filed return. No SSN means no Child Tax Credit, no EITC, and no dependency claim. This is where mid-year placements often stall, because paperwork from the biological family may be incomplete.
Start with the caseworker. Agencies are generally expected to help you obtain the number from the biological parents or apply for one. If April is closing in and the SSN still isn’t in hand, file for an automatic extension so you have until October to submit the return with the number included. You can also file on time without the child and amend later, but amendments take months and hold up any refund.
If you are actively adopting the child and truly cannot get an SSN, apply for an Adoption Taxpayer Identification Number on Form W-7A. That temporary number lets you claim the child while the adoption is pending. File the request at least eight weeks before your filing deadline and attach the placement documentation.3Internal Revenue Service. Adoption Taxpayer Identification Number The ATIN is only for domestic adoptions in progress; a standard foster placement with no adoption underway does not qualify.
What You Get for Claiming the Child
Child Tax Credit and Additional Child Tax Credit
The Child Tax Credit is worth up to $2,200 per qualifying child for the 2026 tax year. You receive the full amount if your adjusted gross income stays under $200,000, or $400,000 for married couples filing jointly. Above those thresholds, the credit phases out.4Internal Revenue Service. Child Tax Credit
If you owe little or no federal income tax, you may still receive up to $1,700 per child through the Additional Child Tax Credit, the refundable portion of the CTC.4Internal Revenue Service. Child Tax Credit Refundable means the IRS pays it out even when your tax bill is zero. You need earned income above $2,500 before the refundable portion starts to build, and families with lower earnings may receive less than the $1,700 maximum.
Earned Income Tax Credit
A qualifying foster child can substantially raise your EITC. The credit is aimed at low-to-moderate-income workers and grows with each qualifying child up to three. For 2025, the maximum credit was $4,328 with one child, $7,152 with two, and $8,046 with three or more; inflation adjustments push the 2026 figures slightly higher.5Internal Revenue Service. Earned Income and Earned Income Tax Credit (EITC) Tables Income limits scale with children and filing status, and the credit is fully refundable.
Credit for Other Dependents
If your foster child ages out of the Child Tax Credit rules, usually by turning 19 without being a full-time student or disabled, they may still qualify for the $500 Credit for Other Dependents. That credit is non-refundable, so it reduces tax owed but does not generate a refund by itself.6Internal Revenue Service. Understanding the Credit for Other Dependents The child still has to meet the general dependency requirements.
Child and Dependent Care Credit
Daycare, after-school programs, and babysitters that let you work or look for work count toward the Child and Dependent Care Credit when a qualifying foster child is involved. You can claim a percentage of up to $3,000 in care expenses for one child, or $6,000 for two or more.7Internal Revenue Service. Publication 503, Child and Dependent Care Expenses The percentage depends on income, with a floor of 20%. Both spouses on a joint return need earned income to claim it.
Head of Household Filing Status
If you are unmarried and a foster child qualifies as your dependent, you may be able to file as Head of Household. That status carries a larger standard deduction, $24,150 for 2026, and more favorable brackets than filing single.8Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 You have to be unmarried or considered unmarried on December 31, have paid more than half the cost of keeping up your home, and have had the foster child live with you for more than half the year. For mid-year placements, the child counts as living with you more than half the year if your home was the child’s main home for more than half the time since placement.2Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
The Foster Care Payments You Receive Are Not Income
Money you receive from a state, local government, or licensed placement agency for caring for a foster child is excluded from your gross income. Federal law carves out these qualified foster care payments from taxation. The exclusion covers standard board payments and difficulty-of-care payments, which compensate you for caring for a child with physical, mental, or emotional needs. The difficulty-of-care exclusion applies for up to 10 foster children under 19 and 5 who are 19 or older in a single home.9Office of the Law Revision Counsel. 26 USC 131 – Certain Foster Care Payments
Because the payments are excluded, you don’t report them on your return, and they aren’t subject to self-employment tax. They are treated as support provided by the agency, which actually helps your dependency claim by keeping the child from being considered self-supporting.
An Election That Can Boost Refundable Credits
Even though these payments are excluded from gross income, you may choose to count them as earned income when calculating the EITC or the Additional Child Tax Credit.10Internal Revenue Service. Certain Medicaid Waiver Payments May Be Excludable From Income The election is all-or-nothing: include all of the payments or none. For foster parents with limited other income, this can meaningfully increase the refundable credits you receive. It does not make the payments taxable; it only affects the earned-income figure used for those two credits.
When a Biological Parent Also Claims the Child
This is where foster parents most often collide with the IRS. A biological parent may file a return claiming the same child, and the IRS has fixed tie-breaker rules to decide the claim.
The core rule: if one claimant is the child’s parent and the other is not, the parent wins, provided the child lived with the parent long enough to meet the residency test.2Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information In practice, once a child has been in foster care for more than half the year, the biological parent usually fails that residency test and cannot make a valid claim. But if the child spent significant time with the biological parent earlier in the year before placement, an overlap can create a real dispute.
When both claimants are parents, the one the child lived with longest wins; if the time was equal, the higher AGI wins.2Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information When neither claimant is a parent, for example two foster families in the same year, the higher AGI wins.11Internal Revenue Service. Tie-Breaker Rule
If a biological parent files first, your e-filed return will be rejected. You will need to paper-file and include documentation of the placement, such as the agency’s placement letter or a court order showing custody dates. The IRS will then send notices to both parties asking them to substantiate their claim. Keep placement paperwork organized for exactly this situation. It is more common than most foster parents expect.
If You Adopt Through Foster Care
Adopting a child out of foster care may qualify you for the Adoption Tax Credit, which covers unreimbursed adoption expenses like attorney fees, court costs, and agency fees.12Internal Revenue Service. Instructions for Form 8839 For 2025, the maximum was $17,280 per child.13Internal Revenue Service. Adoption Credit
Foster-to-adopt families should pay particular attention to the special needs rule. A state or tribal government may designate a child as having special needs if the child cannot safely return to their parents and is unlikely to be adopted without financial assistance to the adoptive family. When a child has that designation and the adoption is finalized, you can claim the full credit amount even if you had no out-of-pocket adoption expenses.13Internal Revenue Service. Adoption Credit Many foster children carry that designation.
Starting with the 2025 tax year, up to $5,000 of the credit is refundable.13Internal Revenue Service. Adoption Credit Expenses reimbursed through a state or federal program cannot be claimed. The credit is filed on Form 8839 in the year the adoption becomes final for a U.S. child with special needs.
State Tax Benefits
Some states offer their own income tax credits or deductions for foster parents, separate from anything federal. Availability and value vary. If your state has an income tax, ask the state tax agency or a local preparer whether foster-related credits apply. Federal eligibility does not automatically translate to state benefits.