The relationship between the two sections
Section 1231 and Section 1250 are not competing categories — they work together. Section 1231 is the broad framework that classifies gains and losses on the sale of business or income-producing property held more than one year. A rental building qualifies as Section 1231 property. Section 1250 is a more specific rule that applies within the Section 1231 world to tell you how the depreciation component of a real-estate gain is taxed.
Think of it this way: Section 1231 asks 'is the net result a capital gain or an ordinary loss?' Section 1250 then asks 'within that gain, how much is taxed at up to 25% because of depreciation?' Both questions apply to the same sale of the same building.
What Section 1231 does
Under IRC § 1231, business assets held more than one year are given a favorable treatment: net gains are taxed as long-term capital gain, while net losses are deductible as ordinary losses. This is the best of both worlds — gains at preferential capital-gains rates, losses deducted against any income.
Section 1231 property includes real estate, depreciable personal property used in a trade or business, livestock, unharvested crops, timber, and certain other assets. The key criterion is business use and a holding period of more than one year. If you sell a rental property at a gain after holding it for more than a year, the net gain is Section 1231 gain and qualifies for long-term capital-gains rates — subject to the Section 1250 layer for the depreciation piece.
The sale is reported on Form 4797. Part I of the form performs the Section 1231 netting: if your total 1231 results for the year are a net gain, they go to Schedule D as long-term capital gain. If total results are a net loss, they go to ordinary income (a very valuable deduction, unconstrained by the $3,000 capital-loss limit).
The Section 1231 five-year lookback rule
A complication: the Section 1231 five-year lookback. If you have deducted net Section 1231 losses in the prior five years, any current-year Section 1231 gain must be recharacterized as ordinary income to the extent of those prior losses. This prevents you from timing things so that losses are always ordinary (beneficial) and gains are always capital (also beneficial).
Example: you took $30,000 of net Section 1231 losses in the prior five years. This year you have $50,000 of Section 1231 gain. Under the lookback, the first $30,000 of that gain is recharacterized as ordinary income; only $20,000 qualifies for long-term capital-gain rates. Track your prior 1231 losses carefully — they follow you and can bite years later when you finally have a gain.
What Section 1250 does within the 1231 gain
Once you know you have a Section 1231 gain on a real estate sale, Section 1250 carves out the depreciation piece. For real property depreciated straight-line under MACRS — which is most residential and commercial real estate placed in service after 1986 — Section 1250 creates a category called unrecaptured Section 1250 gain: the portion of the Section 1231 gain equal to the depreciation claimed.
This unrecaptured 1250 gain is still long-term capital gain (it's within the Section 1231 gain), but it is taxed at a maximum rate of 25% rather than the 0/15/20% rate that applies to other long-term capital gains. The Unrecaptured Section 1250 Gain Worksheet in the Schedule D instructions isolates this amount and applies the 25% cap to it. The remaining Section 1231 gain — the appreciation above your original cost basis — is taxed at the regular 0/15/20% long-term capital-gains rates.
True Section 1250 recapture vs. unrecaptured 1250 gain
There is a nuance worth knowing. True Section 1250 recapture is ordinary income — but it only applies to depreciation in excess of straight-line. Because MACRS requires straight-line for most real property, true ordinary 1250 recapture almost never arises on modern rental properties. What does arise — the straight-line depreciation you took — is 'unrecaptured Section 1250 gain,' which is capital gain taxed at up to 25%, not ordinary income.
The distinction: true 1250 recapture (rare) = ordinary income; unrecaptured 1250 gain (common) = capital gain at up to 25%. Most sellers experience only the latter. True 1250 ordinary recapture can arise on pre-1987 real property or on 15-year land improvements (driveways, parking lots) that used accelerated methods before bonus depreciation simplified things.
Section 1245 property compared to Section 1250
A sale of business property may involve both Section 1250 real property (the building) and Section 1245 personal property (appliances, equipment, cost-segregated components). The distinction is important at sale:
Section 1231 gain on Section 1245 property: depreciation is recaptured as ordinary income at your full marginal rate (no 25% cap), up to the amount of gain. The excess over that recapture is Section 1231 gain going to Schedule D.
Section 1231 gain on Section 1250 property: depreciation is recaptured as unrecaptured 1250 gain at up to 25%, and the remaining appreciation is regular long-term capital gain.
When you sell a rental that has been through a cost segregation study, you have both types on the same return. The 1245 recapture is reported on Form 4797 Part III as ordinary income. The 1250 gain feeds the Schedule D worksheet. Your combined tax bill requires modeling both buckets — not just the headline 25% figure.
A full worked example
You sell a commercial building you've held eight years for $1,000,000. Adjusted basis is $650,000. Gain: $350,000. The building was depreciated $120,000 straight-line; a cost segregation study yielded $50,000 of 5-year components, depreciated in full. Gain breakdown:
$50,000 of Section 1245 ordinary-income recapture (the 5-year components) — at your marginal rate, say 37%.
$120,000 of unrecaptured Section 1250 gain (the building's straight-line depreciation) — at up to 25%.
$180,000 of remaining Section 1231 appreciation gain — at 20% (for a high earner).
Federal tax: $18,500 (1245) + $30,000 (1250, capped at 25%) + $36,000 (appreciation at 20%) = $84,500, before NIIT and state tax. If the five-year lookback applies because of prior 1231 losses, some of the $180,000 would be recharacterized as ordinary and taxed higher still.
How to plan around the 1231/1250 interaction
Understanding that 1231 determines the character and 1250 determines the rate within that character opens planning options. A 1031 exchange defers both — the deferred 1250 gain character carries into the replacement property's basis and eventually surfaces at sale. An installment sale can spread the 1231 appreciation over years (keeping you in lower brackets), but Section 1245 recapture is generally all due in the year of sale under § 453(i), and most unrecaptured 1250 gain is recognized as payments come in.
Timing sales for low-income years reduces the effective rate on both the 25%-capped 1250 slice and the 0/15/20% appreciation slice. Harvesting capital losses offsets the appreciation slice but not the 1250 recapture. And a step-up in basis at death eliminates all deferred 1231 gain and 1250 recapture permanently — the backbone of 'swap till you drop.'
Where each piece shows up on the return, form by form
Knowing which line carries each component prevents costly errors. Form 4797 is the hub: Part III computes recapture on each asset (Section 1245 ordinary recapture and any true Section 1250 excess-depreciation recapture), and the results flow into Part I, where all Section 1231 transactions for the year are netted.
A net Section 1231 gain from Part I moves to Schedule D as long-term capital gain; a net Section 1231 loss moves to Form 4797 Part II and then to Form 1040 as an ordinary loss. The unrecaptured Section 1250 gain is not computed on Form 4797 at all — it is calculated on the Unrecaptured Section 1250 Gain Worksheet in the Schedule D instructions and taxed through the Schedule D Tax Worksheet, which applies the 25% cap. The same building's gain thus splits across three separate computations, and getting the flow right is what makes the final tax figure correct.
The 3.8% Net Investment Income Tax on the gain
On top of the 25% and 0/15/20% rates, high-income sellers often owe the 3.8% Net Investment Income Tax (NIIT) under IRC § 1411 on the gain from a passive rental sale. NIIT applies to net investment income once modified AGI exceeds $200,000 (single) or $250,000 (married filing jointly).
So the unrecaptured 1250 slice can effectively be taxed at 25% + 3.8% = 28.8%, and the appreciation slice at 20% + 3.8% = 23.8%, at the federal level alone. A real estate professional who materially participates in the rental may avoid NIIT because the activity's income is non-passive — one more reason the Section 469 status of the activity matters at the moment of sale, not just year to year.
State taxation of the gain
States generally do not mirror the federal preferential capital-gains rates or the 25% cap on unrecaptured 1250 gain. Most tax the entire gain — recapture and appreciation alike — as ordinary income at the state's regular rates. A California seller, for example, pays up to 13.3% on the whole gain with no capital-gains preference.
This state layer frequently exceeds the federal recapture bite and should be modeled alongside the federal buckets rather than treated as an afterthought. States with no broad income tax — Texas, Florida, Nevada, Washington (on most income), and a few others — remove this layer entirely, which is part of why property location has such a large effect on after-tax return.
Section 1231 and 1250 inside partnerships and passthroughs
When the property is held inside a partnership, S corporation, or multi-member LLC, the Section 1231 and 1250 character is determined at the entity level and passed through to owners on Schedule K-1. Each owner reports their share of Section 1231 gain, unrecaptured 1250 gain, and any ordinary recapture.
Critically, each owner applies the five-year lookback using their own prior Section 1231 losses. That means two partners in the same deal can owe different amounts of tax on an identical share of gain — one may have prior-year 1231 losses that recharacterize part of the gain as ordinary, while the other does not. The K-1 codes, especially the unrecaptured Section 1250 gain line, must be carried carefully to each partner's Schedule D worksheet so the rate caps are applied correctly.
Frequently asked questions
Is Section 1231 property the same as Section 1250 property?
No — 1231 is the umbrella category for business property held more than one year; it governs whether gains are capital or ordinary. Section 1250 is a subset rule that applies within 1231 to real property and controls how depreciation (the recapture portion) is taxed — at up to 25% for straight-line real estate, or as ordinary income for above-straight-line depreciation.
What is the tax rate on Section 1231 gain?
Net Section 1231 gain is long-term capital gain, taxed at 0%, 15%, or 20% depending on your income. However, the portion attributable to real-estate depreciation (unrecaptured Section 1250 gain) is capped at 25%, and any Section 1245 component is ordinary income.
What is the Section 1231 five-year lookback?
Prior net Section 1231 losses in the past five years require current-year 1231 gain to be recharacterized as ordinary income to the extent of those losses. It prevents timing so that losses are always ordinary and gains are always capital.
How does a 1031 exchange affect Section 1231 gain?
A 1031 exchange defers the gain entirely — both the Section 1231 character and the unrecaptured 1250 layer carry into the replacement property's lower basis. When you eventually sell without exchanging, all deferred gain resurfaces with its original character.
Do I owe Section 1250 recapture if I have a Section 1231 loss?
No. Recapture applies only to gain. If you sell at a loss, there is no 1250 recapture — the loss flows as a Section 1231 loss and is deductible as ordinary income if the total 1231 result for the year is a net loss. The only caveat is that the five-year lookback can recharacterize prior-year ordinary losses as ordinary income in later gain years, but that has nothing to do with 1250 recapture specifically.
Where is unrecaptured Section 1250 gain reported?
It is calculated on the Unrecaptured Section 1250 Gain Worksheet in the Schedule D instructions and taxed via the Schedule D Tax Worksheet at up to 25%. It is not a separate line on Form 4797, even though Form 4797 handles the underlying Section 1231 netting.
Does the 3.8% NIIT apply to Section 1231 gain?
Yes, for passive investors with modified AGI above $200,000 (single) or $250,000 (married filing jointly), the gain on a rental sale is net investment income subject to the 3.8% NIIT, on top of the capital-gains and 25% recapture rates. A real estate professional whose rental income is non-passive may avoid it.
Do states honor the 25% cap on Section 1250 recapture?
Usually not. Most states tax the full gain as ordinary income at their regular rates, with no capital-gains preference and no recapture rate cap. Model the state tax separately from the federal buckets; states without a broad income tax remove the layer entirely.
Sources
- IRS Topic No. 409 — Capital Gains and Losses
- IRS Publication 544 — Sales and Other Dispositions of Assets
- IRS Publication 946 — How to Depreciate Property
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.