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Official form guide
IRS Form 8615 is used to figure tax on a child’s unearned income that exceeds $2,700, applying the parent’s tax rate when the child is under 18 at year‑end. The form is required when the child’s unearned income is over the $2,700 threshold.
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IRS Form 8615 is used to figure tax on a child’s unearned income that exceeds $2,700, applying the parent’s tax rate when the child is under 18 at year‑end. The form is required when the child’s unearned income is over the $2,700 threshold.
Plain English
Form 8615 tells the IRS how much tax a child with investment‑type income owes. If the child earned more than $2,700 in interest, dividends, or other unearned money, the parent’s tax rate is used to calculate the child’s liability. The form is attached to the child’s regular tax return.
Submission Date
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Form selector
Child may be subject to Alternative Minimum Tax
AMT items such as accelerated depreciation or tax‑exempt interest could increase tax liability
✓ Confirm presence of AMT items before proceeding
Child may be subject to Net Investment Income Tax
NIIT adds a 3.8% tax on net investment income exceeding the MAGI threshold
✓ Verify child’s MAGI and net investment income
Child files Form 2555 for foreign earned income
Foreign earned income requires the Foreign Earned Income Tax Worksheet instead of standard line amounts
✓ Confirm Form 2555 is attached and used for tax calculation
Not stated in the official source.
Checklist
Line 9 tax calculation
Tax Table, Tax Computation Worksheet, Qualified Dividends and Capital Gain Tax Worksheet, Schedule D Tax Worksheet, or Schedule J · Instructions for Form 8615, line 9
Unearned income amount
Schedule of taxable interest, dividends, capital gains, rents, royalties, etc. · Instructions p.1 – definition of unearned income
Parent’s Schedule J amounts (lines 19‑22)
Parent’s Schedule J (Form 1040) · Instructions p.8 – lines 19‑22
Form 8960 calculation for NIIT
Form 8960 · Instructions p.2 – NIIT
Form 6251 for AMT
Form 6251 · Instructions p.2 – AMT
Field map
General Info
2 items
Full legal name and taxpayer identification number (SSN or EIN).
Current mailing address.
Details
2 items
Complete all applicable sections of this form according to the official IRS instructions.
Enter the relevant dollar amount if this form involves tax calculation.
Certification
1 items
Read and acknowledge any certifications required by this form.
Signatures
1 items
Sign and date. Unsigned forms cannot be processed.
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Fillable formOpen in Editor->The instructions are the 20 25 edition of Form 8615. The source directs users to the IRS.gov/Form8615 page for the latest information.
Quick Facts
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Do I need to file Form 8615 if my child earned wages?
Form deals only with unearned income; wages are earned income.
→ Confirm the income type is unearned before using the form.
Which worksheet should I use for line 9?
Multiple worksheets are listed; choice depends on presence of capital gains or qualified dividends.
→ Check if line 8 includes net capital gain or qualified dividends, then select the appropriate worksheet.
Can I use the parent’s joint return for the child?
The instructions specify using the parents’ joint return if they file jointly.
→ Verify the parents file a joint return before copying Schedule J amounts.
Is the NIIT applicable to my child?
NIIT applies based on MAGI threshold and net investment income.
→ Calculate MAGI and compare to the threshold to determine NIIT liability.
When should I attach Form 6251?
Form 6251 is needed only if the child has AMT items.
→ Review the child’s income for accelerated depreciation or tax‑exempt interest before attaching.
What if the child also files Form 2555?
Foreign earned income changes where to enter amounts on Form 8615.
→ Follow the Form 2555 instructions and use the Foreign Earned Income Tax Worksheet.
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⚠ If something goes wrong
Form 8615 tells the IRS how much tax a child with investment‑type income owes. If the child earned more than $2,700 in interest, dividends, or other unearned money, the parent’s tax rate is used to calculate the child’s liability. The form is attached to the child’s regular tax return.
Any child who (1) had unearned income over $2,700, (2) must file a tax return, and (3) was under age 18 at the end of 2025 must file IRS Form 8615.
The form collects the child’s unearned income (Part I lines 1‑5), the parent’s taxable income (Part II line 6), and then computes the child’s tax (Part III lines 7‑13).
First, gather proof that the child’s unearned income exceeds $2,700 and the parent’s tax information. Enter the child’s taxable income on Part I lines 1‑5, then input the parent’s taxable income on line 6 of Part II. Use the worksheet calculations to fill lines 7‑13 and complete Part III. Attach the completed Form 8615 to the child’s tax return before filing.
If the calculated tax is wrong because a parent’s income changes, the child must file Form 1040‑X to amend the return, and an extension to file does not extend time to pay.
Form deals only with unearned income; wages are earned income. Confirm the income type is unearned before using the form.
Multiple worksheets are listed; choice depends on presence of capital gains or qualified dividends. Check if line 8 includes net capital gain or qualified dividends, then select the appropriate worksheet.
The instructions specify using the parents’ joint return if they file jointly. Verify the parents file a joint return before copying Schedule J amounts.
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