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Official form guide
Form 8960 calculates the Net Investment Income Tax (NIIT) for individuals, estates, and trusts. Use it when your modified adjusted gross income exceeds the NIIT thresholds and you have net investment income.
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Form 8960 calculates the Net Investment Income Tax (NIIT) for individuals, estates, and trusts. Use it when your modified adjusted gross income exceeds the NIIT thresholds and you have net investment income.
Plain English
If you earn money from interest, dividends, capital gains, rents, or royalties and your overall income is high enough, the IRS may tax 3.8% of that investment income. This form tells the IRS how much you owe.
Submission Date
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Form selector
Estate with > $13,900 net investment income
Same calculation but lower threshold
✓ Verify estate filing status
Trust with > $13,900 net investment income
Same steps, attach to Form 1041
✓ Confirm trust type
Form 8960 is due when the related income tax return is due, generally April 15 of the following year. If you file for an extension, the form is due with the extended return. No separate deadline exists.
Checklist
Line 1 – Investment income
Brokerage 1099‑DIV, 1099‑INT, 1099‑B · Statements, 1099s
Line 3 – Deductions
Schedule A or Schedule E expenses · Receipts, expense logs
Line 5 – MAGI
Adjusted gross income + tax‑exempt interest · Form 1040 line 11
Line 9 – NIIT amount
3.8% × lesser of net investment income or MAGI excess · Calculated tax
Field map
Entity Info
1 items
Name and taxpayer ID of the entity claiming the credit.
Credit Info
1 items
Type of credit or incentive being claimed.
Calculation
2 items
The base amount used to calculate the credit.
Calculated credit amount after applying formulas and limitations.
Certification
1 items
Detailed breakdown supporting the credit calculation.
Signatures
1 items
Sign and date the form.
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Fillable formOpen in Editor->Form 8960 is currently the 2024 revision, effective for tax year 2024. Check the IRS website for any updates before filing.
Quick Facts
Downloads
MAGI vs. AGI
MAGI adds tax‑exempt interest, which many forget
→ Re‑calculate using Form 1040 line 11
What counts as investment income
Rental income from a trade or business is excluded
→ Review IRS Publication 925
Deduction limits
Only expenses directly related to investment income are allowed
→ Cross‑check with Schedule E
Joint returns
Only the spouse whose income exceeds the threshold triggers NIIT
→ Verify each spouse’s MAGI separately
Foreign tax‑exempt interest
May be excluded from net investment income
→ Confirm with Form 1116
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