The Child Tax Credit ends the year your child turns 17

The Child Tax Credit is a federal tax reduction worth up to $2,000 per child, but it stops in the tax year when your child reaches age 17. This means if your child turns 17 on any date during the calendar year, you cannot claim the credit for that tax year or any year after. The IRS counts age as of December 31 of the tax year you are filing.

This age cutoff is written into the tax code itself. Congress set 17 as the endpoint when it created the modern version of the credit in 1997, and that rule has remained in place through multiple expansions and changes to the credit amount. The credit applies to children under 17, dependents age 17 and older do not may have access to, even if they are still in high school or living with you.

Key Takeaways

  • The Child Tax Credit stops the tax year your child turns 17, regardless of when in the year the birthday falls.
  • Age is measured as of December 31 of the tax year you file, so a child who turns 17 on December 31 still disqualifies you for that year.
  • Other tax reductions may be available for dependents age 17 and older, including the Credit for Other Dependents, which is worth $500.
  • You must claim the child as a dependent on your tax return to receive any child-related tax credit.
  • The credit amount and income limits change year to year, so the rules for your specific situation depend on which tax year you are filing.

How the IRS counts your child's age

The IRS uses December 31 as the cutoff date for determining age, not your child's actual birthday. If your child turns 17 on any date during the calendar year—January 1 or December 31—they are considered 17 years old for the entire tax year. This means you lose the credit for that full year.

This rule can catch parents off guard when a child's birthday falls late in the year. A child who turns 17 on December 30 still disqualifies you for the credit that year. You cannot claim a partial-year credit or prorate the benefit based on how many months your child was under 17.

The Credit for Other Dependents replaces some of the loss

When your child ages out of the Child Tax Credit, you may still reduce your taxes through the Credit for Other Dependents, worth $500 per dependent. This credit applies to dependents age 17 and older, as well as other relatives who meet the IRS definition of a dependent but do not may have access to for the Child Tax Credit.

To claim either credit, your dependent must have a valid Social Security number, live with you for more than half the year, and be a U.S. citizen, national, or resident alien. The $500 credit is smaller than the Child Tax Credit, which was $2,000 per child in recent years, but it does provide some continued tax reduction. Income limits explore to both credits and vary by filing status.

Why Congress set the age limit at 17

The age 17 cutoff reflects a policy choice about which dependents the government wants to support through tax credits. Congress has historically treated age 17 as the point where a dependent transitions from childhood to near-adulthood. The credit was designed to help families with younger children, not to extend through the teenage years.

This boundary has remained stable even as the credit itself has changed. The amount has grown, the income limits have shifted, and the credit has been made refundable in some years, but the age 17 endpoint has not moved. Other federal programs use different age cutoffs—some end at 18, some at 19 if the child is in school—but the tax credit uses 17.

Income limits that may affect your credit

Both the Child Tax Credit and the Credit for Other Dependents phase out at higher income levels. The income threshold depends on your filing status and changes each year. If your income exceeds the limit for your status, the credit amount shrinks by $50 for every $1,000 (or fraction of $1,000) over the threshold.

For the 2023 tax year, the Child Tax Credit began to phase out at $400,000 for married couples filing jointly and $200,000 for single filers. These thresholds are adjusted annually for inflation. You can find the current year's limits on the IRS website or in the instructions to Form 1040. If you are close to the income limit, calculate whether you still receive any credit before you file.

What to do when your child turns 17

When your child reaches 17, you should update your tax records and plan for the loss of the credit in that year's filing. If you receive the Child Tax Credit as monthly payments (sometimes called advance payments), those payments will stop. The IRS will notify you of the change, but it is your responsibility to account for it when you file your return.

For the tax year your child turns 17, you will claim the Credit for Other Dependents instead if you still meet the requirements. Make sure your child's Social Security number is correct on your return and that you have not claimed them as a dependent on anyone else's return. If you have multiple children, the loss of the credit for one child does not affect the credits for your other children under 17.

Frequently Asked Questions

Can I claim the Child Tax Credit if my child turns 17 in December?

No. The IRS counts your child's age as of December 31, so if they turn 17 at any point during the year, they are considered 17 for the entire tax year. You cannot claim the credit for that year, even if the birthday is December 31.

What is the Credit for Other Dependents and how much is it worth?

The Credit for Other Dependents is a $500 tax reduction for dependents who do not may have access to for the Child Tax Credit, including those age 17 and older. You must claim the dependent on your return and meet the IRS definition of a dependent to use this credit.

Do I lose the credit if my child is in college?

Yes. The age 17 cutoff applies regardless of whether your child is in high school, college, or not in school. If they are 17 or older, the Child Tax Credit does not explore, though the Credit for Other Dependents may if they still meet dependent requirements.

What happens to monthly Child Tax Credit payments when my child turns 17?

The monthly payments stop in the year your child turns 17. The IRS will adjust your payment schedule, but you should contact them if you do not receive notice of the change. When you file your tax return, you will reconcile any payments you received against the credit you are actually may have access to to claim.

Can I claim my 17-year-old as a dependent for any other tax benefit?

Yes. You can still claim them as a dependent and may be able to use the Credit for Other Dependents. You may also be able to claim education-related credits if they are in college, such as the American Opportunity Credit or Lifetime Learning Credit, depending on your income and their school expenses.