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Form 6251: Alternative Minimum Tax—Individuals
IRS Form 6251 is the Alternative Minimum Tax—Individuals form used to calculate a taxpayer’s AMT and tentative minimum tax. Taxpayers must attach it when line 7 exceeds line 10 or when they claim certain credits, such as the qualified electric vehicle credit.
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IRS Form 6251 - Alternative Minimum Tax—Individuals
IRS Form 6251 is the Alternative Minimum Tax—Individuals form used to calculate a taxpayer’s AMT and tentative minimum tax. Taxpayers must attach it when line 7 exceeds line 10 or when they claim certain credits, such as the qualified electric vehicle credit.
Risk Radar
Scan points- 1Failing to attach Form 6251 when line 7 exceeds line 10 can trigger penalties.
- 2Not attaching Form 6251 when line 7 is greater than line 10
- 3Omitting credits for qualified electric vehicle (Form 8834) or alternative fuel vehicle refueling property (Form 8911)
- 4Leaving a negative total on lines 2c‑3 without adjusting line 7 accordingly
- 5Including the standard deduction in AMT calculations
Plain English
Form 6251 tells the IRS if you owe the alternative minimum tax in addition to your regular tax. It works out a separate taxable income and applies a 26% rate in certain cases. If the calculation shows you owe AMT, you pay that amount. The form also helps limit certain tax credits.
Submission Date
- Filing date: 2026-01-16 16:10:38
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
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What this form is for
- Use this form when you need to calculate your alternative minimum tax or tentative minimum tax, such as when line 7 exceeds line 10 or you claim a qualified electric vehicle credit, a personal‑use alternative fuel vehicle credit, a prior‑year minimum tax credit, or a general business credit.
- Do not use it when none of the filing triggers listed in Who Must File apply and you are not required to compute AMT.
- Check Form 2555 instead when you have foreign earned income that may affect Part III calculations.
Form selector
Use this form or another form?
Claiming a general business credit
General business credit amounts affect the attachment requirement for Form 6251
✓ Verify that Form 3800 line 6 or line 25 is greater than zero
Claiming the qualified electric vehicle credit
The credit triggers the need to attach Form 6251
✓ Confirm you are filing Form 8834 for the credit
Having a prior‑year minimum tax credit
Credit for prior year minimum tax requires attaching Form 6251
✓ Ensure Form 8801 is completed and shows a credit
Deadline or filing window
Not stated in the official source
Checklist
What you need before filling it out
Line 5 (exemption amount)
Exemption amount value · Instructions page 1 “What’s New”
Line 7 vs line 10 comparison
Calculated AMT and regular tax amounts · Form 6251 lines 7 and 10
General business credit amount
Form 3800 line 6 or line 25 · Form 3800
Qualified electric vehicle credit
Form 8834 · Form 8834
Foreign tax credit election without Form 1116
Schedule 3 (Form 1040) line 1 · Schedule 3
Before you submit
- 1Verify that the revision date on the form reads 20/25.
- 2Confirm line 5 exemption amount matches $88,100 (or $137,000 MFJ, $68,500 MFS) as shown in the instructions.
- 3Calculate regular tax and AMT, then compare line 7 to line 10.
- 4If line 7 exceeds line 10, attach Form 6251 to the return.
- 5Check any claimed credits (Form 3800, Form 8834, Form 8911, Form 8801) and ensure they exceed zero where required.
- 6For nonresident aliens with U.S. real property disposition, complete the special computation on line 6 and mark “RPI”.
- 7If you elected the foreign tax credit without Form 1116, verify Schedule 3 (Form 1040) line 1 matches the AMTFTC entered on line 8.
- 8Sign the form where indicated.
- 9Retain a copy of the completed Form 6251 for your records.
How to file this form
- 1Compute regular tax liability.
- 2Compute tentative minimum tax using Form 6251 lines 1‑9.
- 3Compare line 7 to line 10 and determine any AMT due.
- 4Complete any required credit forms (e.g., Form 3800, Form 8834) and attach them.
- 5Attach Form 6251 to your Form 1040 return.
- 6Mail the return to the appropriate IRS address or e‑file as directed.
- 7Retain a signed copy of Form 6251 as proof of filing.
Known limitations
- 1Form 6251 is not required when line 7 is not greater than line 10 — Instructions p.1
- 2Form 6251 is not required if you do not claim any general business credit and both line 6 (Part I) and line 25 of Form 3800 are zero — Instructions p.1
- 3Form 6251 is not required if you do not claim the qualified electric vehicle credit (Form 8834), the personal‑use alternative fuel vehicle refueling property credit (Form 8911), or the credit for prior year minimum tax (Form 8801) — Instructions p.1
- 4Form 6251 is not required when the total of lines 2c through 3 is not negative and line 7 would not exceed line 10 without those lines — Instructions p.1
Field map
Compact field-by-field guide
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.
Almost done reviewing the fields?
Fillable formOpen in Editor->The form is the 2025 edition (revision 20/25). The instructions direct users to IRS.gov/Form6251 for the latest information. The exemption amount on line 5 increased to $88,100 ($137,000 married filing jointly or qualifying surviving spouse; $68,500 married filing separately) and the phase‑out threshold rose to $626,350 ($1,252,700 married filing jointly or qualifying surviving spouse).
What changed or needs a fresh check
- Edition date — confirm the revision reads 20/25
- Exemption amount — confirm line 5 exemption is $88,100 ($137,000 MFJ; $68,500 MFS) per the instructions
- Phase‑out threshold — confirm the exemption phase‑out starts at $626,350 ($1,252,700 MFJ) per the instructions
- Fee — Not stated in the official source
- Mailing address — Not stated in the official source
- Signature — Not stated in the official source
Quick Facts
Downloads
After you file
- 1Retain a copy of the filed Form 6251 for your records — Instructions p.1
- 2Keep all calculations and worksheets used to compute the AMT adjustments — Instructions p.1
- 3Preserve records that show how income, deductions, and other items were figured for AMT purposes — Instructions p.1
- 4Maintain copies of any AMT versions of other forms or worksheets that were completed — Instructions p.1
Sources
- SRCInstructions p.1 — attach Form 6251 if line 7 > line 10.
- SRCInstructions p.1 — attach Form 6251 if you claim any general business credit and line 6 or line 25 of Form 3800 is greater than zero.
- SRCInstructions p.1 — attach Form 6251 if you claim the qualified electric vehicle credit (Form 8834), the personal‑use alternative fuel vehicle refueling property credit (Form 8911), or the credit for prior year minimum tax (Form 8801).
- SRCInstructions p.1 — attach Form 6251 if the total of lines 2c through 3 is negative and line 7 would be greater than line 10 without those lines.
- SRCInstructions p.1 — you must keep records to support items reported on Form 6251.
- SRCInstructions p.1 — keep a copy of any AMT form or worksheet you used to figure the AMT.
- SRCInstructions p.1 — if the IRS examines your return, you may be asked to explain the items reported on Form 6251.
- SRCInstructions p.1 — retain records that show how you figured income, deductions, etc., for the AMT.
Common confusion points
Do I need to file Form 6251 if line 7 is lower than line 10?
I assume any AMT filing is required regardless of the comparison.
→ Verify that line 7 is greater than line 10 before attaching the form.
I claimed a general business credit, but line 6 on Form 3800 is zero—do I still attach Form 6251?
The requirement mentions a positive amount on line 6 or line 25.
→ Check that either line 6 (Part I) or line 25 of Form 3800 is greater than zero.
I received a qualified electric vehicle credit—does that automatically trigger Form 6251?
I think the credit only matters if AMT is owed.
→ Any claim of the credit on Form 8834, 8911, or 8801 requires attaching Form 6251.
My total of lines 2c through 3 is positive—why would Form 6251 be needed?
I’m confused about the negative‑total exception.
→ Confirm that the total of lines 2c‑3 is negative and would affect the line‑7 versus line‑10 comparison.
Do I have to keep records for the AMT adjustments?
I wasn’t told to keep separate documentation.
→ Retain all supporting calculations and worksheets for AMT items as the instructions require.
If the IRS audits my return, what AMT documents should I provide?
I’m unsure which forms are examined.
→ Keep copies of Form 6251, all AMT worksheets, and any related supporting records.
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- Form 1040X – file an amended return to correct any AMT errors after filing Form 6251.
Questions about IRS Form 6251
What is IRS Form 6251 used for?
Form 6251 tells the IRS if you owe the alternative minimum tax in addition to your regular tax. It works out a separate taxable income and applies a 26% rate in certain cases. If the calculation shows you owe AMT, you pay that amount. The form also helps limit certain tax credits.
Who must file IRS Form 6251?
Taxpayers must file IRS Form 6251 if line 7 is greater than line 10, if they claim any general business credit with a positive Form 3800 line, if they claim the qualified electric vehicle, alternative fuel vehicle refueling property, or prior‑year minimum tax credits, or if lines 2c‑3 are negative and would make line 7 exceed line 10.
What information does IRS Form 6251 require?
Form 6251 collects the alternative minimum taxable income and calculates the tentative minimum tax, using lines 1‑3, line 6, line 7 (including the 26% rate when line 6 ≤ $239,100 or $119,550 married filing separately), and line 9.
How do I complete IRS Form 6251?
First, complete Part I to compute AMTI by entering the differences on lines 1a and 1b. Next, calculate line 6 and, if it is $239,100 or less ($119,550 if married filing separately), apply the 26% rate to determine line 7. If required, finish Part III for foreign earned income or other adjustments, then sign the form and attach it to the return.
Do I need to file Form 6251 if line 7 is lower than line 10?
I assume any AMT filing is required regardless of the comparison. Verify that line 7 is greater than line 10 before attaching the form.
I claimed a general business credit, but line 6 on Form 3800 is zero—do I still attach Form 6251?
The requirement mentions a positive amount on line 6 or line 25. Check that either line 6 (Part I) or line 25 of Form 3800 is greater than zero.
I received a qualified electric vehicle credit—does that automatically trigger Form 6251?
I think the credit only matters if AMT is owed. Any claim of the credit on Form 8834, 8911, or 8801 requires attaching Form 6251.
My total of lines 2c through 3 is positive—why would Form 6251 be needed?
I’m confused about the negative‑total exception. Confirm that the total of lines 2c‑3 is negative and would affect the line‑7 versus line‑10 comparison.
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