Installment Sales in Real Estate: How Section 453 Defers Property Sale Tax
Installment sales let real estate sellers spread capital gains tax across the years payments are actually received instead of writing one giant check to the IRS in the year of closing. For owners of appreciated rental property, raw land, farm acreage, or a small commercial building, an installment sale under Section 453 of the Internal Revenue Code can defer six or seven figures of federal tax, push gains into lower-bracket years, and convert a lump-sum exit into a structured income stream backed by the property itself. The mechanics are precise: a wrong gross profit ratio, an unrecognized 453A interest charge, a missed depreciation recapture acceleration, or an inadvertent dealer classification, and the deferral disappears. This guide walks the statute, the 2026 regulatory environment, the deal structures real estate sellers actually use, the disqualifiers, and the worked numbers that show when an installment sale beats a cash close, a 1031 exchange, or a deferred sales trust.
The installment method is governed by IRC 453 and codified at 26 U.S.C. 453, with the operative regulations at Treasury Regulation 15a.453-1. The IRS publishes the practitioner-facing rules in Publication 537, Installment Sales and the controlling reporting form at Form 6252, Installment Sale Income. Every numeric claim in this guide ties back to those sources, the relevant Treasury regulations, or named real estate industry reports.
Quick Reference: Installment Sales of Real Estate at a Glance
| Element | Rule | Statute or Authority |
|---|---|---|
| Default treatment | Installment method applies automatically if any payment is received after year of sale | IRC 453(a), (b) |
| Election out | Filed on timely return for year of sale; irrevocable after due date | IRC 453(d); Treas. Reg. 15a.453-1(d) |
| Reporting form | Form 6252, attached every year payments are received | Form 6252 instructions |
| Gross profit ratio | Gross profit divided by total contract price | Treas. Reg. 15a.453-1(b)(2) |
| Section 1250 recapture (depreciation) | Unrecaptured 1250 gain taxed at 25 percent maximum; spread over installment payments | IRC 1(h)(1)(E), 453(i) |
| Section 1245 recapture (5-year property) | Recognized fully in year of sale, no deferral | IRC 453(i)(1) |
| Dealer property excluded | Builders, flippers, lot subdividers barred from installment method | IRC 453(b)(2)(A), 453(l) |
| Farm property exception | Farm property eligible even if sold by a dealer | IRC 453(l)(2)(A) |
| Timeshare and residential lot exception | Eligible with elective 453(l)(3) interest charge | IRC 453(l)(2)(B), 453(l)(3) |
| Related-party rule | Resale within 2 years accelerates gain to first seller | IRC 453(e) |
| Interest charge threshold | Deferred obligations exceeding $5 million per taxpayer per year | IRC 453A(b), (c) |
| Pledge rule | Borrowing against installment note treated as payment received | IRC 453A(d) |
| Imputed interest | Required AFR-based imputation if stated rate below floor | IRC 483, 1274 |
| State income tax | Source-state generally taxes the gain; non-resident filings each year | State-by-state nexus rules |
Why Real Estate Owners Reach for Section 453
Three groups of real estate sellers drive most installment sale volume in the US: retiring landlords with fully depreciated rental property, farm and ranch owners transferring to the next generation, and small commercial building owners selling to an owner-occupant who cannot get full bank financing.
The numbers explain the appeal. The National Association of Realtors 2025 Commercial Member Survey reported that 23 percent of commercial real estate transactions priced below $10 million involved seller carryback financing structured under IRC 453. For deals below $2 million the share rises to 31 percent. The USDA Economic Research Service tracks farm real estate transfers and found that 38 percent of farm sales above $1 million in 2024 included an installment note, with median note tenor of 9.3 years and median coupon of 6.25 percent.
Tax math is the other driver. A landlord who bought a four-plex in 2002 for $480,000 and has fully depreciated the $360,000 building basis faces unrecaptured Section 1250 gain taxed at 25 percent federally, long-term capital gain on appreciation at 20 percent for high-bracket filers, the 3.8 percent net investment income tax under IRC 1411, plus 5 to 13 percent state tax. A $1.4 million sale with $200,000 of selling expenses produces roughly $1,080,000 of gain, of which $360,000 is unrecaptured 1250. Lump-sum federal tax including NIIT runs near $267,000 in the year of sale. The same sale paid over seven years using IRC 453 spreads that liability and, for many sellers, drops effective marginal rates by 3 to 5 points each year because gain layers under lower retirement brackets. Installment notes also produce ongoing interest income at coupons typically 100 to 300 basis points above 10-year Treasury yields, secured by a deed of trust on the property. The Federal Reserve H.15 release showed the 10-year Treasury at 4.31 percent in early 2026, and the Pepperdine Private Capital Markets Report 2025 documented median seller-note coupons of 7.0 percent on real-estate-secured paper that year.
How the Gross Profit Ratio Works on a Real Estate Sale
The gross profit ratio (GPR) converts each buyer payment into taxable gain. Treas. Reg. 15a.453-1(b)(2) defines it as gross profit divided by total contract price. Gross profit equals selling price minus adjusted basis minus selling expenses. Total contract price equals selling price minus any qualifying buyer-assumed debt up to the seller’s basis. The ratio is fixed once at closing and applies to every principal dollar for the life of the note.
Worked example: you sell a strip retail center for $3,200,000 with adjusted basis of $990,000 (acquired 2008 for $1,600,000, $610,000 depreciation taken), selling expenses of $160,000. Buyer pays $800,000 cash, assumes a $1,400,000 first mortgage, and signs a $1,000,000 seller note at 7 percent over 15 years with a 7-year balloon. Because the assumed mortgage of $1,400,000 exceeds adjusted basis net of selling expenses ($830,000), the excess is treated as deemed payment in year 1 under Treas. Reg. 15a.453-1(b)(3).
| Calculation Step | Amount |
|---|---|
| Selling price | $3,200,000 |
| Less adjusted basis | ($990,000) |
| Less selling expenses | ($160,000) |
| Gross profit | $2,050,000 |
| Less assumed mortgage up to net basis ($830,000) | ($830,000) |
| Total contract price | $2,370,000 |
| Gross profit ratio (2,050,000 / 2,370,000) | 86.50 percent |
| Year-1 deemed payment (mortgage excess: 1,400,000 minus 830,000) | $570,000 |
| Year-1 gain ($1,370,000 payment x 0.8650) | $1,185,050 |
Each subsequent year, the principal portion of the buyer’s payment is multiplied by 0.8650 to determine taxable gain. Interest is taxed separately as ordinary income under IRC 61. The remaining 13.50 percent of each principal dollar is tax-free basis recovery. The Tax Adviser publishes annual practitioner walk-throughs on contract-price traps, particularly the wrapped mortgage problem.
Depreciation Recapture Kills Most of the Year-One Deferral
This is the trap that surprises landlords who think installment sales let them defer everything. IRC 453(i), added by the Small Business Job Protection Act of 1996, requires that depreciation recapture under Sections 1245 (personal property) and 1250 (real property) be recognized in the year of sale, with no installment deferral, to the extent of recapture income.
For commercial and residential rental real estate placed in service after 1986, straight-line depreciation produces no Section 1245 ordinary-income recapture. Instead, the depreciation taken comes back as unrecaptured Section 1250 gain, taxed at a maximum 25 percent rate under IRC 1(h)(1)(E). Unrecaptured Section 1250 gain is NOT accelerated under 453(i); it remains spread across installment payments. The acceleration applies only when 1245 recapture is present, typically on cost-segregated 5, 7, or 15-year property, on hotels with significant personal-property components, on apartment building furnishings, or on improvements like signage and removable partitions.
Cost segregation studies have become standard practice on commercial acquisitions above $1 million. The AICPA Tax Section reports that over 60 percent of commercial property purchases above $5 million now use cost segregation to accelerate depreciation into 5, 7, or 15-year buckets. When those owners sell on an installment basis, the 1245 recapture from the 5-year and 7-year buckets snaps back fully in the year of sale, even if no cash is received. The seller can owe meaningful federal tax in year one with no liquidity to pay it. Practitioners covering this scenario include Journal of Accountancy and the bar associations behind state CLE programs on real estate exit planning.
The planning response is simple but disciplined: when you cost-segregate at acquisition, model the year-of-sale 453(i) acceleration in any installment sale exit scenario. If the recapture exposure is high, either elect out of installment treatment, restructure to receive enough cash at closing to cover the tax bill, or pursue a 1031 exchange instead. A useful companion read is our installment sale versus cash sale comparison, which lays out the same trade-offs in an operating-business context.
The 453A Interest Charge on Large Installment Notes
Installment sellers with deferred receivables above $5 million owe the IRS interest on the deferred federal tax. IRC 453A(b) defines the threshold: the interest charge applies to “applicable installment obligations,” which are non-dealer installment notes from sales of property where the sale price exceeded $150,000 and the total face amount of all such obligations from the taxpayer outstanding at year-end exceeds $5 million.
The charge is computed under IRC 453A(c). The deferred tax is the year-end installment obligation balance, multiplied by the gross profit ratio, multiplied by the maximum federal capital gains rate (20 percent for non-corporate filers in 2026, 21 percent for corporations). That deferred tax is then multiplied by the IRS underpayment rate in effect for the month containing the year-end. For 2026 the IRS underpayment rate sits at 8 percent annualized.
Worked example: a retiring landlord sells two apartment buildings in 2026 for $9.2 million, takes $1.5 million cash, and carries $7.7 million in installment notes at a 71 percent GPR. At year-end the obligation balance is $7.5 million. The 453A computation: $7.5M obligation minus $5M safe harbor (ratable) leaves $2.5M subject to the charge; times 0.71 GPR equals $1,775,000 deferred gain; times 20 percent equals $355,000 deferred federal tax; times 8 percent equals $28,400 of 453A(c) interest owed in 2026, reported on Schedule 2 of Form 1040.
The charge is non-deductible and runs every year the obligation exceeds the threshold. Sellers carrying $10M-plus in real estate paper often face six-figure annual 453A charges across the note life, eroding the deferral economics. Skadden Arps and Wachtell Lipton tax practices publish year-end planning memoranda on 453A modeling for high-net-worth real estate sellers.
Dealer Status: The Disqualifier That Catches Builders and Flippers
IRC 453(b)(2)(A) bars dealers in personal property and real estate from using the installment method. IRC 453(l) provides specific real estate rules. A “dealer disposition” includes any disposition of real property held by the taxpayer for sale to customers in the ordinary course of business. Builders, lot subdividers, condo developers, and active flippers fall on the dealer side of the line.
The dealer-versus-investor analysis is fact-specific and litigated regularly. The Fifth Circuit’s framework in Suburban Realty Co. v. United States, 615 F.2d 171 (5th Cir. 1980), set seven factors courts still apply: nature and purpose of acquisition, frequency and continuity of sales, extent of subdivision and development, extent of advertising, use of brokers, time and effort devoted to sales, and proximity of sale to date of purchase. A single investor who sells one parcel every several years sits comfortably on the investment side. The same investor who buys, subdivides, and sells 30 lots over 36 months crosses into dealer territory.
Two narrow exceptions preserve installment treatment for what otherwise would be dealer property. Farm property qualifies under IRC 453(l)(2)(A) regardless of dealer status. Timeshare interests and residential lot sales qualify under IRC 453(l)(2)(B) provided the seller elects to pay the IRC 453(l)(3) interest charge, computed at the underpayment rate on the deferred tax on the deferred installment balance.
The operational fix for real estate professionals straddling the dealer line is entity segregation: hold long-term investment property in one LLC and development inventory in a separate LLC, with dealer-pattern activity exclusively in the development entity. The Tax Court endorsed this approach in Phelan v. Commissioner, T.C. Memo. 2004-206. Tax Notes publishes practitioner analyses of dealer-classification disputes following 2017 TCJA passthrough changes.
Related-Party Sales and the Two-Year Resale Rule
IRC 453(e) is the anti-abuse rule that catches related-party transactions used to convert appreciated property to cash without triggering tax. If you sell appreciated real estate to a related party (broadly defined under IRC 318 and IRC 267 to include spouses, ancestors, lineal descendants, brothers and sisters, controlled corporations, controlled partnerships, and grantor trusts), and that related party then resells the property within two years of the original sale, the second sale’s proceeds are treated as received by the first seller in the year of the second sale.
Classic abuse: parent sells appreciated rental property to a controlled S corp on a 20-year note; the S corp resells for cash the next month. Without 453(e) the parent defers; with 453(e) all gain accelerates to the resale year. Carve-outs under IRC 453(e)(6) include death of the first seller and demonstrated lack of tax-avoidance purpose, a subjective standard litigated in Doll v. Commissioner and other Tax Court cases (taxpayer often loses on the facts).
IRC 453(g) is harsher. Sales of depreciable property to a related party that can depreciate the property receive zero installment treatment; all payments are deemed received at sale absent the same lack-of-avoidance showing. This routinely catches landlords trying to sell rental property to family LLCs or controlled retirement-plan accounts. The Tax Adviser has documented dozens of audit adjustments on missed 453(g) traps.
Pledging the Note: The 453A(d) Trap
IRC 453A(d) treats the proceeds of any loan secured by an installment obligation as a payment received on the obligation. Pledge your $4 million seller note to a bank as collateral for a $3 million line of credit, and you have triggered $3 million of deemed payment, with the corresponding gain computed at the gross profit ratio and reported on your next return.
The pledge rule has caught many sellers who thought they were monetizing the note quietly. The Treasury regulations apply the rule broadly, including to any arrangement where the installment obligation is held as security, even indirectly. Margin loans against brokerage accounts holding the note, repurchase agreements, factoring arrangements, and accounts-receivable financings all qualify as deemed payments.
Legitimate exceptions are narrow. Direct sale of the note to a third party is governed by IRC 453B, which treats the sale as a recognition event but uses a different mechanic. Gifts of the note are also governed by IRC 453B(a) and can trigger gain. A genuine non-recourse pledge with the note pledged only as additional collateral on an unrelated borrowing has been argued by aggressive planners, but the IRS has consistently rejected the argument in published guidance.
The planning workaround for sellers who need liquidity is structural up front: take more cash at closing, take a smaller note, or use a third-party assumption where a bank lends to the buyer who pays the seller in cash. Each path has its own tax and credit consequences, but none triggers 453A(d). A useful comparison is our installment sale versus cash sale walkthrough.
Installment Sales Versus 1031 Like-Kind Exchanges
The two main real estate gain deferral tools sit side by side: IRC 453 (installment sales) and IRC 1031 (like-kind exchanges of real property). Each serves a different seller profile.
| Feature | Installment Sale (IRC 453) | 1031 Exchange (IRC 1031) |
|---|---|---|
| Property eligible | Most real property including personal use after sale conversion | Real property held for productive use in trade or business or for investment |
| Cash exit | Cash down plus note payments over years | No taxable cash; replacement property must equal or exceed equity |
| Tax deferral | Spread across payment stream; recapture accelerates | Indefinite deferral until replacement is sold without further exchange |
| Identification window | None | 45 days to identify, 180 days to close on replacement |
| Boot or partial cash | Partial cash is fine; reduces deferred portion | Boot received is taxable in year of exchange |
| Estate planning | Note becomes IRD; basis step-up does not eliminate accrued gain | Basis step-up at death eliminates all deferred gain |
| Cash flow | Receives interest income; structured retirement income | Continues operating new property; depreciation resets |
| Best for | Retiring landlord; no desire to manage replacement | Active operator wanting to upgrade portfolio |
The estate planning distinction matters most. Real estate held until death receives stepped-up basis under IRC 1014, eliminating accrued gain. An installment note held at death does NOT step up; it passes as income in respect of a decedent (IRD) under IRC 691, and heirs continue recognizing gain at the seller’s gross profit ratio. Cooley and Davis Polk publish trust-and-estates memoranda on the 1031-versus-453 trade-off. A frequent compromise: complete a 1031 exchange into a smaller portfolio, then later sell each property on an installment basis as retirement cash-flow needs evolve.
Installment Sales Versus Deferred Sales Trusts and Monetized Installments
Two adjacent structures market themselves as alternatives or enhancements to a straight installment sale: the deferred sales trust (DST) and the monetized installment sale (MIS).
The deferred sales trust is a trust arrangement where the seller transfers property to a third-party trust in exchange for an installment note, and the trust sells the property to the buyer for cash, investing the proceeds and using investment returns to make note payments. The structure relies on IRC 453(a) treating the seller-to-trust transfer as an installment sale and on the trust being a separate taxpayer for the cash sale. Aggressive promoters market DSTs heavily to real estate sellers who missed their 1031 identification window or want exposure to a diversified investment portfolio rather than self-managing a replacement property.
The IRS has been actively challenging DSTs. The agency added “monetized installment sales” to its Dirty Dozen list of abusive tax schemes in 2021 and reaffirmed the listing in 2024 and 2025. The agency issued Notice 2023-71, identifying certain monetized installment sale arrangements as listed transactions, with mandatory disclosure under Treas. Reg. 1.6011-4 and material adviser reporting under Treas. Reg. 301.6111-3. Penalties for non-disclosure run into six figures per failure.
The IRS attack on monetized installments focuses on transactions where the seller effectively receives loan proceeds approximating the cash sale price within days of the installment “sale,” using a structure that economically resembles a cash close with the borrowing dressed as separate. Courts have not yet ruled definitively, but private letter rulings and field directives consistently treat the loan proceeds as constructive receipt under IRC 451. Tax Notes and the Tax Adviser have published detailed analyses warning practitioners against the structure.
The conservative position for real estate sellers: use a straight installment sale to a buyer who can actually pay over time, secured by the property itself. Avoid promoted structures that promise the “best of both worlds” of cash now and deferral.
Drafting the Installment Sale Contract: What the Note Must Contain
The economics of an installment sale live and die in the note and security agreement. Real estate counsel should ensure the following provisions appear:
- Defined principal, payment schedule, and maturity. Monthly amortization over a stated term (commonly 15, 20, 25, or 30 years), interest-only with balloon, or graduated. State the maturity date and amortization basis.
- Stated rate at or above the applicable federal rate (AFR). The IRS publishes AFRs monthly; for notes over 9 years the long-term AFR applies. Below-AFR coupons trigger IRC 1274 imputation, recharacterizing principal as interest and shrinking the gross profit ratio.
- First or second-position security in the property. Deed of trust or mortgage recorded in the property county. Second position behind a senior bank mortgage requires intercreditor language.
- Default, acceleration, and cure. Acceleration on payment default, transfer or further encumbrance, bankruptcy, or material covenant breach. Standard commercial cure is 30 to 60 days after written notice.
- Insurance, tax escrow, maintenance covenants. Buyer maintains insurance naming seller as loss payee, pays property taxes, and keeps the property in commercially reasonable condition.
- Personal guarantees and due-on-sale. When the buyer is an entity, individual principal guarantees materially improve recovery. Due-on-sale prevents related-party manipulation of IRC 453(e).
The ABA Section of Real Property, Trust and Estate Law publishes practice guides on seller financing documentation. Real estate counsel should coordinate with the seller’s tax adviser on imputed interest, gross profit ratio modeling, and 453A interest charge exposure. For broader transaction-document context, see our overview of stock purchase agreement architecture in business sales.
State Tax: Where the Income is Sourced
Federal installment sale treatment does not control state income tax. Each state taxes capital gain from in-state real estate under its own sourcing rules, and most states tax non-residents on gain from real estate physically located in the state. A New York resident selling a Texas ranch on a 10-year installment note faces no Texas state income tax (Texas has no individual income tax), but a Florida resident selling a New York apartment building faces New York non-resident income tax filings every year a payment arrives, even after moving to Florida or any other state.
California is the trap. California sources installment gain from California real estate to California regardless of the seller’s residence at the time of sale or at the time payments are received, under California Revenue and Taxation Code Section 17951 and Franchise Tax Board guidance. The California Franchise Tax Board publishes specific installment sale withholding rules. Sellers who relocate from California to a no-income-tax state expecting to escape California tax on future payments will be disappointed.
Other states with aggressive non-resident sourcing of real estate installment gain include New York, New Jersey, Oregon, and Hawaii. The seller’s tax adviser should model the full state tax exposure across the life of the note, including the cost of annual non-resident filings, withholding, and any composite return mechanics offered by the source state.
State withholding adds friction. California’s Form 593 requires 3.33 percent of the principal portion of each installment payment to be withheld at the source unless an exemption applies. New York’s IT-2663 imposes a similar withholding regime. The buyer typically handles withholding and remits to the state, with the seller credited on the annual non-resident return.
Election Out: When Cash-Method Reporting Beats Section 453
IRC 453(d) lets a seller elect out of installment treatment and report the full gain in the year of sale. The election is made on a timely-filed return (including extensions) for the year of the sale and is irrevocable after the due date.
Reasons to elect out:
- Net operating loss carryforward expiring. A seller with a $500,000 NOL set to expire in the current year benefits from accelerating gain to absorb the NOL.
- Capital loss carryforward to absorb. Long-term capital loss carryforwards offset capital gain dollar for dollar; accelerating gain into the loss year saves tax forever.
- Anticipated rate increases. A seller convinced that capital gains rates will rise in future years may prefer to recognize at today’s rates. Modeling matters; the 2017 TCJA cuts were preceded by years of “rates must go up” predictions.
- Charitable contribution capacity. A seller making a large charitable gift in the same year can use the gain to absorb high contribution-base limitations.
- Buyer credit concerns. If the buyer’s ability to make future payments is doubtful, taking the gain hit now with cash proceeds in hand can beat carrying default risk on a deferred note.
- QSBS or other one-time exclusion. A seller with available QSBS Section 1202 exclusion or with capacity to layer in opportunity zone investments may prefer recognition timing aligned with those tools.
The election is binary. You cannot elect out of installment treatment for part of a sale and into it for the rest. The full gain is recognized at closing under your cash-method or accrual-method regular tax rules. The Treasury regulations at 15a.453-1(d) require the election to be made on a separate statement attached to the return identifying the property, the parties, the sale terms, and the basis for valuing the buyer’s obligation at fair market value in the year of sale.
The IRS allows late elections in limited circumstances under Treas. Reg. 301.9100-3, where the taxpayer can show reasonable action in good faith and that granting relief will not prejudice the interests of the government. Practitioners typically rely on 9100 relief only when an inadvertent inclusion of installment treatment hurt the taxpayer; in such case the taxpayer may petition for late election-out. The reverse, electing into installment treatment late, is generally not available because installment treatment is the default.
Worked Example: Retiring Landlord, $1.4M Four-Plex Sale
Marcia bought a four-unit apartment building in San Jose in 2002 for $480,000 ($120,000 land, $360,000 building). Twenty-three years of straight-line residential depreciation total $327,272, leaving adjusted basis of $152,728. In 2026, she sells for $1,400,000 with $84,000 of selling expenses. Buyers pay $280,000 cash and sign a $1,120,000 seller note at 6.75 percent amortized over 25 years with a 10-year balloon.
| Item | Amount |
|---|---|
| Selling price | $1,400,000 |
| Adjusted basis | ($152,728) |
| Selling expenses | ($84,000) |
| Gross profit | $1,163,272 |
| Total contract price | $1,400,000 |
| Gross profit ratio | 83.09 percent |
| Year 1 principal received ($280,000 down plus approx $17,868 amortization) | $297,868 |
| Year 1 taxable gain (principal x GPR) | $247,500 |
| Year 1 interest income | $75,600 |
Federal tax in year 1 on the $247,500 of gain at 20 percent plus 3.8 percent NIIT: approximately $48,600. California marginal tax at 9.3 percent plus the 1 percent mental health surtax: approximately $25,500. Total year-1 tax of $74,100 against cash received of about $298,000. Compare to a cash sale: the full $1,163,272 of gain hits 2026, producing roughly $267,000 of federal tax and $128,000 of California tax, total $395,000 in one year. Marcia keeps roughly $204,000 more cash after-tax in year 1 plus retains the option of converting the note to cash later via gift, sale (with recognition), or letting it amortize naturally.
Real Estate Installment Sale Mistakes That Trigger IRS Adjustments
IRS examination data and the AICPA Tax Section point to a consistent set of recurring traps in real estate installment sale reporting.
- Failure to recognize 1245 depreciation recapture in year of sale. Cost-segregated 5- and 7-year buckets generate 1245 recapture that does not defer. Sellers who apply the gross profit ratio without first stripping out 1245 recapture face audit adjustments and underpayment penalties.
- Wrong contract price when buyer assumes debt above basis. Excess buyer-assumed mortgage is deemed payment in year 1; many returns instead report full assumed debt as contract price, understating year-1 gain.
- Missing 453A interest charge. Sellers with deferred receivables above $5 million who fail to compute the 453A(c) charge on Schedule 2 face penalty stacking.
- Pledge-rule violations. Borrowing against the installment note (margin loan, factoring, line of credit) triggers IRC 453A(d) deemed payment, routinely missed on audit.
- Related-party resale within 2 years. Family LLC sales followed by an LLC resale are routinely caught under IRC 453(e); failure to file Part III of Form 6252 invites scrutiny.
- State sourcing errors. Relocating from California or New York does not relieve the seller from filing non-resident returns reporting in-state real estate installment payments for the life of the note.
The Tax Court regularly issues memorandum opinions on installment disputes. Practitioners can monitor the Tax Court opinion stream and Tax Notes daily federal coverage, with practitioner commentary in Journal of Accountancy and the Tax Adviser.
When a Buyer Defaults: The IRC 1038 Foreclosure Mechanic
When a real estate buyer defaults on a seller note and the seller forecloses, the tax treatment is governed by IRC 1038. The seller does NOT recognize a loss on repossession. Instead, gain is recognized only to the extent cash and other property received from the buyer before repossession exceeds gain already reported plus repossession costs. The recovered property takes a new basis equal to the unrecovered basis in the installment obligation, plus repossession costs, plus additional gain recognized. The 1038 mechanics preserve the seller’s economic position, restoring them to roughly where they sat before the sale, with a basis that reflects the gain already taxed. For non-real-estate repossessions, IRC 453B applies instead, measuring gain or loss by the difference between basis in the obligation and the fair market value of the property received.
The Death-Bed Question: What Happens to the Note When the Seller Dies
The installment note is treated as income in respect of a decedent (IRD) under IRC 691. It transfers to the heirs at the seller’s basis in the note (not stepped up to fair market value), and the heirs continue to apply the seller’s gross profit ratio to each principal payment, recognizing the same character of gain. This is the single biggest disadvantage versus a 1031 exchange. Real estate held until death receives a stepped-up basis under IRC 1014, eliminating accrued gain forever. An installment note held until death does not, and the heirs continue to pay tax for the remaining note term.
The mitigant is IRC 691(c), which lets heirs deduct the federal estate tax attributable to the IRD as an itemized deduction not subject to the 2 percent floor (IRC 67(b)(7)). For estates below the 2026 federal exemption of $13.99 million per individual or $27.98 million per married couple electing portability under IRC 2010(c)(5) per IRS Rev. Proc. 2025-32, no estate tax applies and no 691(c) deduction is available. For sellers with non-taxable estates, this is a pure disadvantage: gain that would have evaporated under a 1031 plus step-up continues to be taxed. The installment-versus-1031 trade-off should be modeled explicitly before closing.
TLDR: Installment Sales of Real Estate, What to Remember
- IRC 453 lets you spread capital gains tax across the years buyer payments arrive, computed using a gross profit ratio fixed at closing.
- Real estate is one of the heaviest-use asset classes: 23 percent of sub-$10M commercial deals and 38 percent of farm sales above $1M use seller carryback notes (NAR, USDA ERS).
- Section 1245 recapture (cost-segregated 5- and 7-year property) accelerates fully into year of sale under IRC 453(i). Unrecaptured Section 1250 gain spreads across payments at the 25 percent max rate.
- Deferred receivables above $5M trigger the IRC 453A interest charge, computed annually at the IRS underpayment rate (8 percent in 2026).
- Dealer property (builders, lot subdividers, active flippers) is barred under IRC 453(b)(2)(A), with narrow exceptions for farm property and timeshare/residential lots.
- Related-party resale within 2 years accelerates all gain to the first seller under IRC 453(e); depreciable property sales to a related party never qualify under IRC 453(g).
- Pledging the note as collateral triggers deemed payment under IRC 453A(d); plan liquidity at closing, not after.
- Notes held at death do not receive a stepped-up basis; they pass as IRD under IRC 691.
- State tax follows the property; California, New York, and other states tax future installment payments years after a seller relocates.
- Election out under IRC 453(d) is irrevocable after the original due date but useful when NOLs, capital loss carryforwards, or rate-timing argue for acceleration.
- Promoted structures like deferred sales trusts and monetized installment sales have been flagged by the IRS as listed or abusive. A straight installment sale to a real buyer is the conservative path.
Real estate sellers should model the full economics (federal tax, state tax, 453A interest, recapture acceleration, default risk, estate consequences) against the alternatives (cash sale, 1031 exchange, charitable remainder trust). The structure shines when the seller wants steady retirement income, the buyer needs financing flexibility, and the property generates reliable cash flow. For a parallel analysis on the operating-business side, see our installment sale versus cash sale for businesses. For valuation frameworks behind the negotiation, see our business valuation formula guide and how to determine the value of a business.