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Tax Year Age Calculator
Enter a date of birth and tax year to determine the person's
federal tax age, interview questions, and common age-related
federal tax considerations.
Type or paste 01/15/2010, 1/15/2010,
01-15-2010, 2010-01-15, or 01152010.
Federal Tax Age for Tax Year
Age for federal tax purposes at the end of the selected tax year
January 1 birthday:
Federal tax rules generally treat an individual as reaching
an age on the day before their birthday. A January 1 birthday
therefore reaches the next age on December 31 of the prior year.
Questions to Ask the Taxpayer
Check each item as you review it with the taxpayer.
Checkmarks automatically clear when a new date of birth is entered.
Age-Related Tax Considerations
Federal provisions that may be affected by this person's age.
Federal Tax Age Timeline
Quick reference for major age-based federal tax thresholds.
The person's current tax-age range is highlighted.
Under 13
Current
Child & Dependent Care Credit
Child may generally be a qualifying person for
Form 2441 while under age 13. Care must generally
enable the taxpayer and spouse, if applicable,
to work or look for work.
Age 13
Current
Childcare Credit Age Cutoff
Child generally stops qualifying based solely on age
once age 13 is reached. Expenses incurred before the
13th birthday may still qualify.
Under 17
Current
Child Tax Credit
Child may meet the age requirement for the Child Tax
Credit and Additional Child Tax Credit if all other
requirements are satisfied.
Age 17
Current
Child Tax Credit Ends Based on Age
The individual generally no longer satisfies the CTC
age test. The Credit for Other Dependents may become
relevant if the person otherwise qualifies as a dependent.
Under 18
Current
Kiddie Tax
Form 8615 may apply when the child has sufficient
unearned income and the other Kiddie Tax requirements
are satisfied.
Age 18
Current
Kiddie Tax Support Test
Kiddie Tax can still apply at age 18 if earned income
does not exceed one-half of the individual's support
and the other requirements are met.
Under 19
Current
Qualifying Child Age Test
The individual can generally satisfy the age portion
of the qualifying-child test without needing to be
a full-time student.
Ages 19–23
Current
Full-Time Student Rules
Full-time student status becomes important for the
qualifying-child dependency test and EITC qualifying-child
test. Kiddie Tax may also continue to apply to certain
full-time students.
Age 24+
Current
Student Qualifying-Child Age Test Generally Ends
Full-time student status generally no longer extends
the qualifying-child age test. Consider qualifying-relative
rules or the permanent-and-total-disability exception.
Ages 25–64
Current
EITC Without a Qualifying Child
The taxpayer falls within the general age range for
claiming the Earned Income Tax Credit without a
qualifying child, subject to all other requirements.
Age 65+
Current
Senior Tax Provisions
Additional standard deduction may apply. Schedule R
may become relevant. For tax years 2025 through 2028,
the temporary additional deduction for seniors may
also apply. A taxpayer age 65 or older generally falls
outside the age range for EITC without a qualifying child.
Always remember:
Age alone does not establish eligibility. Dependency,
relationship, residency, support, income, student status,
disability, identification, filing status, and other
requirements may apply.
Important:
This calculator identifies common federal tax provisions
and interview questions related to age. It does not independently
determine dependency, credit eligibility, filing requirements,
or tax liability.
Relationship, residency, support, student status, disability,
income, filing status, citizenship/residency, taxpayer
identification requirements, custody arrangements, and other
rules may apply. Tax law can vary by tax year.
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