That mistake is more common than it should be, and it's worth addressing directly before anything else in this post, because it's the single biggest reason eligible single moms miss out on the Child Tax Credit entirely. Filing is what claims the credit. Not filing, even with low or no income, means leaving real money unclaimed.
How much the credit is actually worth in 2026
For the 2026 tax year, the Child Tax Credit is worth up to $2,200 per qualifying child under the age of 17. Of that amount, up to $1,700 is refundable through the Additional Child Tax Credit, meaning you can receive that portion as an actual refund even if you owe little or nothing in federal income tax.
This distinction matters enormously for a lot of single moms specifically, since a credit that only reduces what you owe is worthless if you don't owe much to begin with. The refundable portion is what makes this credit genuinely accessible on a lower income, not just a benefit for households with a larger tax bill to offset.
Who actually qualifies as a dependent for this credit
The child must be under 17 at the end of the tax year, must have lived with you for more than half the year, and must be your child, stepchild, foster child, sibling, or a descendant of any of these, a grandchild or niece or nephew you're raising, for example. The child also can't have provided more than half of their own financial support during the year.
Both you and the child need a valid Social Security number for this specific credit, a requirement that's excluded some ITIN filing households from claiming the full Child Tax Credit in recent years, though a child without a qualifying SSN may still be eligible for a smaller Credit for Other Dependents instead, which is worth checking specifically if this applies to your situation.
Who claims the credit when parents don't live together
For single moms specifically, this is often the most practically important detail. Generally, the custodial parent, defined as the parent the child lived with for the greater number of nights during the year, is the one eligible to claim the Child Tax Credit, regardless of any separate child support or custody arrangement that might exist.
If custody is close to a fifty fifty split, the tiebreaker is the parent with whom the child spent the greater number of nights specifically, not any agreement between parents about who should claim it, unless the custodial parent formally releases the claim to the other parent using a specific IRS form. Understanding this clearly matters if there's ever a disagreement about who's entitled to claim a shared child.
The income phase out most single moms don't need to worry about
The full credit is available to single filers with income up to $200,000, phasing out gradually above that threshold. For the vast majority of single moms, income falls well below this level, which means the phase out isn't a practical concern for most households reading this, but it's worth knowing it exists in case your specific situation is closer to that range.
The mistake that costs people the most: not filing at all
If your income is low enough that you don't believe you owe federal taxes, filing might feel unnecessary. This is exactly the assumption that costs eligible parents real money, since the refundable portion of the Child Tax Credit, up to $1,700 per child, is only available if you actually file a return claiming it. No return means no refund, regardless of how clearly you would have qualified.
IRS Free File offers free tax preparation and filing for eligible income levels, which removes the cost barrier that sometimes discourages someone with a low income from filing in the first place. If your income was low enough in a previous year that you didn't file, and you had a qualifying child at the time, filing a return for that year, even now, can potentially claim a refund you're still entitled to, generally within three years of the original due date.
How the credit actually gets claimed
The Child Tax Credit is claimed using Schedule 8812 alongside your federal tax return, which most tax preparation software, including free options for eligible income levels, walks through automatically once you've entered your dependent's information correctly. There's no separate application process beyond filing your tax return itself with the correct information included.
My free Minimalist Budget Planner is where I map out expected tax credits alongside my regular income for the year, since knowing roughly what to expect helps me plan rather than treating tax season as an unpredictable surprise each time.
A specific comparison that shows what this can mean
A home health aide with two qualifying children hadn't filed for two prior years, assuming her low seasonal income meant there was nothing to file for. Once she learned about the refundable portion of the credit, she filed both a current year return and an amended return for the most recent prior year still within the filing window, claiming a combined refund across both years that came to just over $3,100 once both children's credits across the two years were accounted for.
She told me the specific thing that had kept her from filing sooner was a reasonable but incorrect assumption, that owing nothing meant there was nothing to gain by filing, when the actual refundable credit meant the opposite was true the entire time.
Tracking expected credits alongside a full budget
My Simple Monthly Budget Planner Pro tracks anticipated tax credits and refunds alongside regular monthly income, so a return expected in a specific month shows up as part of the full financial picture rather than existing separately from everything else being tracked.
Frequently asked questions
How much is the Child Tax Credit worth per child in 2026?
Up to $2,200 per qualifying child under 17, with up to $1,700 of that refundable through the Additional Child Tax Credit, meaning that portion can be received as an actual refund even if you owe little or nothing in federal tax. The full credit is available to single filers with income up to $200,000, which covers the vast majority of single mom households.
Do I need to owe taxes to get the Child Tax Credit?
No, and this is the most important thing to understand if your income is on the lower end. Up to $1,700 per child is refundable, meaning you can receive it as a refund regardless of how much you owed, provided you file a tax return claiming it. Many eligible parents miss this credit entirely simply because they assume filing isn't necessary when they don't owe anything, when filing is actually what claims the refundable portion in the first place.
Which parent claims the Child Tax Credit if custody is shared?
Generally, the custodial parent, defined as the parent the child lived with for the greater number of nights during the year, is the one eligible to claim the credit, regardless of a separate child support arrangement. If nights are close to evenly split, the specific tiebreaker rules and any formal release of the claim between parents matter, and checking current IRS guidance or a tax professional for your specific custody situation is worth doing if there's any ambiguity.
The refund my coworker almost never claimed
That conversation about two years of unfiled returns is still the reason I bring this up directly to anyone who mentions skipping filing because their income felt too low to matter. It mattered. It just required filing to actually access.
If you have a qualifying child and haven't filed in a recent year you should have, check whether you're still within the window to file that return and claim what you're owed. For this year, file even if you're certain you won't owe anything, since owing nothing and being owed something are genuinely different situations.
When you're ready to track expected credits alongside your full budget, my Simple Monthly Budget Planner Pro keeps the complete picture in one place.
Not there yet? Start with my free Minimalist Budget Planner to map out what you might be expecting this tax season.
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Have you filed every year you were eligible for this credit, or is there a year you might want to double check? It's worth the few minutes to find out.

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