Where to Report Unrecaptured Section 1250 Gain: Form 4797 and Schedule D

Unrecaptured section 1250 gain is reported in three linked steps: you report the sale of the depreciable real property on Form 4797, isolate the depreciation-related portion of the gain using the Unrecaptured Section 1250 Gain Worksheet in the Schedule D instructions, and enter the resulting figure on Line 19 of Schedule D (Form 1040). That amount is then taxed at a maximum rate of 25% through the Schedule D Tax Worksheet, which sits between ordinary income rates and the 0%, 15%, or 20% long-term capital gains rates.¹

What You Are Actually Reporting

When you sell depreciable real property at a gain, the portion of that gain equal to the straight-line depreciation you claimed (or should have claimed) is unrecaptured section 1250 gain. It gets the 25% ceiling instead of the lower long-term capital gains rates. Any gain from accelerated depreciation above what straight-line would have allowed is section 1250 recapture, taxed as ordinary income. For most residential and commercial property placed in service after 1986, only straight-line is available, so the ordinary-income piece is usually zero and the full depreciation-related gain runs through the 25% path.

One rule shapes the number before you ever touch a form. The IRS uses the greater of depreciation “allowed or allowable.”² If you failed to claim depreciation you were entitled to, the calculation still treats you as having taken it. Skipping depreciation does not reduce your taxable gain.

Records to Pull Before You Start

Every line on Form 4797 comes from a document you should have on hand:

Original cost basis: purchase price plus closing costs.
Capital improvements that increase basis (betterments, restorations such as a replaced roof, and adaptations). Routine repairs and maintenance do not.³
Total depreciation claimed across every year of ownership, from your Forms 4562, subject to the allowed-or-allowable rule.²
Sale price and selling expenses from the closing disclosure.

If you inherited the property, the starting basis is generally fair market value on the date of death, and only depreciation taken after you inherited feeds the unrecaptured section 1250 gain calculation.⁴

Step 1: Report the Sale on Form 4797

Form 4797 is where the sale of business or investment real property is first recorded.⁵ The relevant work happens in Part III, which handles gain from the disposition of depreciable property.

On Lines 20 through 24, you enter the gross sales price, cost or adjusted basis plus selling expenses, and total depreciation allowed or allowable. The form subtracts depreciation from basis to produce adjusted basis, then subtracts adjusted basis from sales price to arrive at total gain on Line 24.⁶

Lines 25 through 29 break that total gain into components. Line 26 captures section 1250 recapture, the ordinary-income portion from accelerated depreciation. For most post-1986 property depreciated on the straight-line method, Line 26 is zero. The remaining gain flows back to Part I of Form 4797 as section 1231 gain, and that is the figure the next worksheet works from.⁷

Step 2: Complete the Unrecaptured Section 1250 Gain Worksheet

This worksheet is not a standalone IRS form. It lives inside the Instructions for Schedule D (Form 1040) and functions as a scratchpad; you do not file it with your return.⁸ Its job is to take your total section 1231 gain from Form 4797 and isolate the piece attributable to straight-line depreciation, subtracting any amount already taxed as ordinary income through Line 26 of Form 4797 so nothing is taxed twice.

Several other inputs may feed into the worksheet:

Installment sales. If you sold with seller financing, the depreciation recapture is generally recognized in the year of sale, and the unrecaptured section 1250 gain portion of each installment payment is reported as received using figures from Form 6252.⁹⁸
Partnership or S corporation sales. Any unrecaptured section 1250 gain reported to you on a Schedule K-1 goes on a designated line of the worksheet.⁸
Mutual fund distributions. If box 2b of Form 1099-DIV shows unrecaptured section 1250 gain from a real estate fund, that amount enters the worksheet as well.⁸

Line 18 of the worksheet produces the final figure that transfers to Schedule D.¹⁰

Step 3: Enter the Gain on Line 19 of Schedule D

The result from the worksheet goes on Line 19 of Schedule D (Form 1040). Reporting it there is not the end of the work. It is the trigger that tells you to compute your tax using the Schedule D Tax Worksheet rather than the standard tax tables.¹

The Schedule D Tax Worksheet stacks your income in layers. Ordinary income is taxed at graduated rates first. Long-term capital gains are then split: the amount on Line 19 is taxed at up to 25% on Line 40 of the worksheet, and the remaining long-term gains are taxed at 0%, 15%, or 20%.⁸ The 25% figure is a ceiling. If your marginal rate is lower, you pay the lower rate on that gain. The tax computed here flows to your Form 1040.

The 3.8% Net Investment Income Tax

Higher-income sellers face a separate 3.8% Net Investment Income Tax on gain from the sale of investment real estate when modified adjusted gross income exceeds the threshold for their filing status:¹¹

Married filing jointly or qualifying surviving spouse: $250,000
Single or head of household: $200,000
Married filing separately: $125,000

The NIIT sits on top of the capital gains rate, so unrecaptured section 1250 gain could be effectively taxed at up to 28.8%. It is reported on Form 8960 and applied to the lesser of your net investment income or the amount by which MAGI exceeds the threshold.¹²

Situations That Change What Lands on the Worksheet

Converting a Rental to a Primary Residence

The Section 121 exclusion (up to $250,000 for single filers, $500,000 for joint filers) does not apply to gain attributable to depreciation taken after May 6, 1997.¹³ If you claimed $60,000 in depreciation during the rental years, that $60,000 still runs through the worksheet and is taxed at 25% even if the rest of the gain qualifies for the exclusion.

Property Acquired in a Prior 1031 Exchange

If the property came to you through a like-kind exchange, the depreciation from the relinquished property was deferred, not eliminated. On a taxable sale of the replacement property, accumulated depreciation from both properties feeds the unrecaptured section 1250 gain calculation, and the carried-over basis is lower than what you paid for the replacement.

Inherited Property

With a stepped-up basis, the prior owner’s depreciation drops out.⁴ Only depreciation you claim after inheriting factors into the worksheet. Sell soon after inheriting without claiming depreciation and there is generally no section 1250 gain to report. Rent for a decade and claim depreciation each year, and those deductions will drive the 25% figure on a future sale.

Holding Period Under One Year

Unrecaptured section 1250 gain only arises when the property was held for more than one year. Sell within a year of acquisition and the entire gain is short-term, taxed at ordinary rates, with no separate 25% bucket and no Line 19 entry.¹

Recordkeeping and Penalty Exposure

Keep Form 4797, the Unrecaptured Section 1250 Gain Worksheet, closing statements, and depreciation schedules for at least three years after filing the return that reports the sale.¹⁴ The IRS assessment window extends to six years if gross income is understated by more than 25%, and complex basis calculations on real property are a common area of scrutiny.

Underpayment triggers a failure-to-pay penalty of 0.5% of the unpaid tax for each month it remains outstanding, up to 25%.¹⁵ Tax software handles the layered Schedule D Tax Worksheet computation automatically, but knowing which figure should land on Line 19, and where it came from, is the only way to check that the software produced the right result.

1
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
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Internal Revenue Service. Depreciation and Recapture 3
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Internal Revenue Service. Tangible Property Regulations – Frequently Asked Questions
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Internal Revenue Service. Publication 551, Basis of Assets
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Internal Revenue Service. About Form 4797, Sales of Business Property
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Internal Revenue Service. Instructions for Form 4797
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Internal Revenue Service. Form 4797 Sales of Business Property
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Internal Revenue Service. Instructions for Schedule D (Form 1040)
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Internal Revenue Service. Publication 537, Installment Sales
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Internal Revenue Service. Schedule D (Form 1040)
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Internal Revenue Service. Topic No. 559, Net Investment Income Tax
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Internal Revenue Service. Questions and Answers on the Net Investment Income Tax
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Internal Revenue Service. Publication 523, Selling Your Home
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Internal Revenue Service. Topic No. 305, Recordkeeping
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Internal Revenue Service. Failure to Pay Penalty