Form 6251 AMT Checklist for Individuals, 2017 Tax Year

Checklist, 2017 Tax Year

IRS Form 6251 calculates the alternative minimum tax (AMT) for individuals. For 2017, exemption amounts and income thresholds reflect annual inflation adjustments under pre-existing tax law, not the Tax Cuts and Jobs Act. This checklist walks you through AMT calculations for the 2017 tax year, including adjustment items, preference items, exemption amounts, and the final AMT liability entry on Form 1040.

AMT Calculation Steps for IRS Form 6251

• The 2017 AMT exemption amounts are $54,300 for single, $84,500 for married filing
• You must calculate whether your alternative minimum taxable income (AMTI) falls within
• You should reduce the exemption using the worksheet when AMTI exceeds the

1. Step 1: Determine 2017 AMT Exemption Amount Based on Filing Status

   Start by confirming your filing status because the AMT exemption amounts depend on whether you file as single, married filing jointly, or married filing separately. You should locate the exemption amounts and phaseout thresholds in the 2017 instructions and apply the Exemption

   Phaseout worksheet when your income exceeds the threshold. This step frames your net AMTI calculation because the exemption reduces the base that the AMT rates apply to. jointly or qualifying widow(er), and $42,250 for married filing separately. the AMT phaseout range for your filing status. threshold for your filing status.

2. Step 2: Complete Line 1—Calculate Taxable Income Starting Point

   Use your 2017 Form 1040 to establish the starting point for IRS Form 6251. You should enter taxable income from Form 1040, line 43, because that figure anchors your AMT calculations and connects the AMT computation to your regular income tax return. After you enter this amount, you can begin layering in the adjustment items and preference items that convert regular taxable income into AMTI.

   1. From Form 1040, line 43, copy the reported taxable income because that line reflects the final 2017 taxable income figure.

   2. To ensure accuracy, confirm that the amount matches your final return, including any corrected schedules or late adjustments.

   3. Consistent filing status across all forms remains critical because filing status determines exemption amounts and phaseout thresholds.

• If you claimed the standard deduction, you should start with the amount from Form 1040,
• If you itemized deductions, you should proceed using the line 43 taxable income entry
• The 2017 standard deduction amounts are $6,350 for single, $12,700 for married filing

3. Step 3: Account for Standard Deduction Adjustments

   The standard deduction is not allowed for AMT. If you claimed the standard deduction, you cannot treat it as a tax deduction for AMT purposes, so you must follow the instructions that redirect you to start with adjusted gross income on Form 6251. You should confirm whether you used itemized deductions or the standard deduction, because this decision changes how you begin the AMTI computation. line 38, on Form 6251, line 1, and then go to line 7. and then apply the relevant AMT adjustments. jointly, and $9,350 for head of household.

4. Step 4: Report Tax-Exempt Interest Adjustments

   Some tax-exempt bonds generate tax-exempt interest for regular income tax, but certain interest becomes an AMT preference item. It is imperative to identify tax-exempt interest from specified private activity bonds and incorporate it into AMTI, as the AMT system considers this interest to be a preference.

   This step often applies when you hold municipal bonds through a brokerage account, a mutual fund, or a managed portfolio. Enter tax-exempt interest from specified private activity bonds on the appropriate line, and treat it as part of AMT calculations when the bond qualifies.

   Specified private activity bonds generally include private activity bonds issued after August 7,

   1986, and this category generally does not include bonds issued in 2009 or 2010. You should exclude other statutory exceptions listed in the 2017 instructions and IRC Section 57(a)(5).

5. Step 5: Report Depreciation and Cost Recovery Adjustments

   Depreciation can differ under the AMT method, so you must reconcile regular tax depreciation with the AMT approach. You should calculate the difference between AMT depreciation and regular tax depreciation for property placed in service before 2017. For property that was placed in service during 2017, the applicable AMT method under MACRS should be applied, and Form

   4562 should be used to substantiate your figures.

   1. Regular depreciation for each asset should be computed using the method applied on your return.

   2. AMT depreciation must be computed using the AMT method and recovery periods described in the 2017 instructions.

   3. The net difference should be entered as an adjustment on IRS Form 6251, and you should attach Form 4562.

• Investment income should include ordinary dividends, taxable interest, and capital gains
• When investment interest exceeds net investment income, calculate the disallowed
• Documentation for elections and calculations should be retained because these records

6. Step 6: Report Investment Interest Deduction Adjustments

   Investment interest expense may change under AMT rules because the allowable deduction depends on net investment income. If you claimed investment interest expense on Schedule A for 2017, you should verify the deduction against investment income reported on Form 4952.

   The AMT disallows investment interest deductions in excess of net investment income, and this limitation can interact with capital gains treatment when you elect to treat capital gains as investment income. when you elect to classify those amounts as investment income. amount and enter the adjustment on the appropriate line. can affect AMT liability and future-year reporting.

7. Step 7: Include Passive Activity Loss Adjustments

   Passive activity losses can produce different outcomes for AMT, especially when you hold rental property interests or receive Schedule K-1 items from partnerships. If you have passive activity losses from rental real estate or limited partnerships, you should compare your regular tax deduction to the AMT allowance.

   Attach Form 8582 and specify only the AMT adjustment that corresponds to the distinctions between the regular tax treatment and the AMT treatment. If you track multiple activities, you should organize support schedules by activity and by year so the AMT adjustment remains traceable.

   You should maintain consistent assumptions across worksheets because inconsistencies can distort net AMTI and produce an incorrect AMT credit. Disallowed losses may be carried forward within the passive activity framework, so it is crucial to retain passive activity details from previous years.

8. Step 8: Calculate AMT Using 2017 Tax Rate Schedule

   After you compute AMTI, you apply the AMT rates to determine the tentative minimum tax. You should subtract the exemption calculated in Step 1 before applying the AMT rates because the exemption reduces the income subject to the AMT tax rate structure.

   For 2017, the 26 percent rate applies to AMTI up to $187,800, or $93,900 if married filing separately, and the 28 percent rate applies above those thresholds.

   1. AMTI should be computed only after all adjustment items and preference items are finalized.

   2. The AMT exemption amount must be subtracted after the exemption phaseout rules are applied.

   3. The 2017 AMT rates of 26 percent and 28 percent apply based on filing status thresholds.

9. Step 9: Determine Tentative Minimum Tax and Regular Tax Comparison

   To determine whether AMT applies, compare the tentative minimum tax (TMT) to your regular income tax. Use the regular tax shown on Form 1040, line 44, because that line represents the base regular tax for 2017.

   When TMT exceeds regular tax, the excess equals AMT liability, and when regular tax exceeds

   TMT, no AMT applies. In that case, enter zero for AMT. This comparison must exclude tax credits, and accuracy depends on confirming that the regular tax figure comes from the correct

   Form 1040 line, because misreads can distort the result.

10. Step 10: Report AMT Credits And AMT Foreign Tax Credits

    AMT can create an AMT credit carryforward when deferral preferences, such as depreciation timing differences, drive the tax. Eligibility for the minimum tax credit carryforward from prior years should be evaluated, and prior-year AMT credits must be reported as instructed for 2017.

    AMT foreign tax credit rules require separate consideration because the foreign tax credit under

    AMT uses distinct limitations. Clear year-by-year credit records remain important because carryforwards can affect later regular tax outcomes.

    A proper distinction between deferral preferences that generate an AMT credit and permanent differences that do not must be maintained. Nonrefundable credit interaction with the annual credit limitation also requires evaluation because ordering rules can change the portion of AMT credit available for use.

11. Step 11: Enter Form 6251 Result on Form 1040

    You must report AMT directly on the 2017 Form 1040. Transfer the AMT amount from Form

    6251 to Form 1040, line 45, and attach IRS Form 6251 to your complete return. Form 1040, line

    63 reports the total tax for 2017, and it reflects the sum of multiple tax components, including regular tax, AMT, and other taxes, so you should confirm line totals before you file.

• The 2017 AMT exemption amounts reflect inflation adjustments and are $54,300 for
• For 2017, the AMT tax rate brackets apply a 26 percent rate to the first $187,800 of
• The medical expense deduction threshold uses 7.5 percent of AGI for 2017: Line 2 of
• Passive activity loss coordination updates align references to the Form 8582 worksheet
• AMT credit carryforward tracking emphasizes deferral preferences: Only deferred
• For 2017, the shared responsibility payment is reported on Form 1040, line 61,
• Full IRS transcript retrieval (Wage & Income + Account)
• Professional tax form review
• Preparation & filing support
• Tax relief options if you owe the IRS

12. Step 12: Preserve AMT Deduction Carryforward Calculation and

    Documentation

    When you pay AMT due to timing adjustments, you may generate an AMT credit for future years. You should calculate the AMT credit carryforward using the 2017 worksheet and preserve supporting schedules for adjustment items and preference items. Depreciation schedules, passive activity computations, and investment interest worksheets should be permanently recorded to facilitate AMT credit and future-year reconciliation.

    Key 2017-Specific IRS Updates and Changes single filers, $84,500 for married filing jointly or qualifying widow(er), and $42,250 for married filing separately. taxable excess, or $93,900 for married filing separately, and a 28 percent rate above those amounts.

    Form 6251 shows “Reserved for future use” because no AMT adjustment is required under this provision for 2017. to match contemporary form structure and loss limitation calculations. preferences and timing adjustments create carryforward credits, and permanent preferences do not. exemptions are claimed using Form 8965, and the payment is excluded from AMT calculations.

    If you’re missing tax documents or want to ensure the numbers you enter match IRS records, we can help.