The year a child turns 17, the Child Tax Credit vanishes from the family tax return, and plenty of parents assume the tax help simply ends there. It does not. A quieter credit, worth up to $500 per person, picks up where the child credit leaves off, and it covers a far wider cast: the 19-year-old at community college, the 24-year-old finding their footing at home, the mother whose assisted-living bills you pay, even a dependent who has an ITIN rather than a Social Security number.
The IRS calls it the Credit for Other Dependents, and its own explainer, Understanding the Credit for Other Dependents, is the place to start. Households supporting adult relatives routinely leave this money unclaimed because nobody told them a “dependent” does not have to be a young child. Midway through 2026, with the support you are providing this year already adding up, here is how the credit works and who counts.
What the credit is worth
The credit is $500 for each qualifying dependent, and it is nonrefundable: it reduces the income tax you owe, dollar for dollar, down to zero, but it will not generate a refund by itself. A couple supporting two aging parents could knock $1,000 off their tax bill. The credit was created by the 2017 tax law and was scheduled to expire, but the tax legislation enacted in July 2025 made it a permanent feature of the code, so it is available for 2026 and the years beyond without any sunset to track.
Who counts as an “other” dependent
The credit covers dependents of any age who cannot be claimed for the Child Tax Credit. In practice, that means three big groups. First, your own children aged 17 and older, including college students you still support. Second, qualifying relatives: parents, grandparents, adult siblings, in-laws, and certain others who do not have to live with you, provided you supply more than half of their financial support and their own gross income falls below the annually adjusted limit in IRS rules. Third, unrelated members of your household, such as a partner’s child, who live with you all year and meet the dependency tests.
Two universal requirements apply to every one of them. The person must be a U.S. citizen, U.S. national, or U.S. resident alien, and you must actually claim them as a dependent on your return. Notably, the dependent needs a Social Security number or an Individual Taxpayer Identification Number issued by the return’s due date, and unlike the Child Tax Credit, an ITIN is enough. The fastest way to settle a specific case is the IRS’s interactive quiz, Does my child/dependent qualify for the Child Tax Credit or the Credit for Other Dependents, which takes about ten minutes.
The income limits are generous
The credit phases out at the same high thresholds as the Child Tax Credit: it begins shrinking once modified adjusted gross income passes $200,000, or $400,000 for married couples filing jointly, losing $50 of credit for each $1,000 above the line. The overwhelming majority of households supporting an adult dependent qualify for the full amount.
How to claim it
There is no separate application. You list the person as a dependent on Form 1040, check the “credit for other dependents” box next to their name, and the credit is calculated on Schedule 8812, the same schedule used for the Child Tax Credit; the IRS’s Child Tax Credit page covers both. Tax software handles the mechanics automatically once the dependent is entered, which is exactly why the real failure point is upstream: families who never enter the dependent at all because they assume a 78-year-old parent or a 20-year-old student cannot be one.
Why July is a sensible time to think about it
Dependency for 2026 will be judged on the full year’s facts, and the support test, more than half of the person’s total support, is the one that trips people up. Support includes housing (measured by fair rental value), food, medical costs, and similar expenses. If you are covering most of a parent’s assisted-living bill or an adult child’s rent and groceries, start keeping a simple tally now; reconstructing a year of support from memory next April is much harder. Mid-year is also when arrangements change, a parent moves in, a graduate moves home, and those changes are what create the claim.
One more planning note for shared caregiving: when siblings split a parent’s support and no one person provides more than half, a multiple support agreement can let one sibling claim the dependent, a wrinkle worth reading up on before year end. Five hundred dollars will not offset what it costs to support another adult. But it is real money, it now exists permanently, and it belongs to the households doing that quiet work, provided they know to check the box.
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