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1031 Exchanges and Installment Sales: Seller Notes, Taxes, and Risks

By Jerry Baker

A property sale can sometimes combine a 1031 exchange with installment-sale reporting when the seller receives both qualifying replacement real estate and a buyer's note. The exchange rules and installment rules do different jobs, so the cash-and-note split does not tell you how much gain is deferred. This guide explains the main choices, a simple example, and the questions to resolve before agreeing to seller financing.

Two tax rules can apply to one deal

A 1031 exchange generally defers gain by ongoing an investment in qualifying real property. An installment sale generally reports eligible gain as principal payments are received, when at least one payment arrives after the tax year of sale. Neither rule means that every dollar received is tax-free. [1] [2]

In a combined deal, the seller may buy like-kind property and also receive an installment obligation. IRS Publication 537 provides specific adjustments for that combination. The value of the like-kind property reduces the installment contract price, and the gain deferred under the exchange rules reduces installment gross profit. [1]

That is more precise than saying, “The cash part is tax-free and the note part is taxed.” Basis, debt, expenses, recapture, and the form of the deal matter. A percentage of the price paid in cash is not automatically the percentage of gain deferred.

I would settle the expected tax treatment before accepting a note. After the sale closes, the documents and funds may already have taken a path that is hard to change.

What does it mean to carry a note?

When you carry a note, you agree to receive some of the price later. The buyer owes you under the note's terms. The arrangement may include interest, scheduled principal payments, a final balloon payment, and security in the property. Those terms need careful legal drafting.

You have changed roles. You may no longer be responsible for leasing the building, but you now depend on the borrower paying as agreed. The property's value, the borrower's resources, other liens, and your enforcement rights become part of your investment review.

A seller note is not itself like-kind real estate. Receiving a note therefore raises questions that would not arise in an exchange solely for qualifying property. Installment treatment can affect when eligible gain is reported; it does not turn the note into real property. [1] [2]

Before discussing a tax benefit, I would ask a basic question: would you make this loan if it were not helping the sale close? If the answer is no, the financing deserves more attention.

Separate principal, gain, basis, and interest

An installment payment can contain several things. Interest is generally ordinary income. The principal portion may include both a return of tax basis and gain. The gross-profit percentage determines the gain portion in a straightforward eligible installment sale. [1]

Assume a hypothetical $1 million sale with $400,000 of installment-sale basis. There is no debt, selling expense, recapture, or other adjustment in this example. Gross profit is $600,000, and the contract price is $1 million. The gross-profit percentage is 60%.

A $100,000 principal payment would therefore include $60,000 of gain and $40,000 of basis recovery under these assumptions. Any interest payment is separate. The 60% figure is not a tax rate. It is the portion of principal treated as gain.

Real deals can be less tidy. A mortgage assumption can change the contract-price math. A payment called principal may include unstated interest under the tax rules. Start with a CPA's worksheet, then use the payment schedule to track the resulting amounts.

A combined exchange example shows why proportions can mislead

Consider a different hypothetical deal. You transfer investment real estate worth $1.2 million with $400,000 of adjusted basis. You receive $900,000 of qualifying replacement real estate and a $300,000 buyer's installment note. Assume no debt, costs, recapture, cash payments, or other complications.

Total realized gain is $800,000: the $1.2 million value received minus $400,000 of basis. The note represents $300,000 of non-like-kind consideration. Under this simplified example, $500,000 of gain can remain deferred in the replacement real estate, while the $300,000 note-related gain is considered under the installment rules. [1] [2]

The installment contract price is $300,000 after subtracting the $900,000 replacement value. Installment gross profit is also $300,000 after subtracting the $500,000 deferred gain from the $800,000 total gain. The installment gross-profit percentage is therefore 100%.

If the buyer later pays $100,000 of note principal, all $100,000 is gain in this example. It is not 25% gain simply because the note was 25% of the deal's value. Interest is still separate.

The replacement property's simplified basis is $400,000: its $900,000 value less $500,000 of deferred gain. The example illustrates the relationship between the two systems. It is not a tax math for an actual deal, and a change in the facts can change the result.

Depreciation needs its own review

Installment reporting does not necessarily postpone all gain tied to depreciation. Ordinary depreciation recapture must generally be reported in the year of sale, even if you receive no installment payment that year. Publication 537 directs taxpayers to separate that recapture from gain eligible for installment reporting. [1]

Be careful with the word “recapture.” People often use it loosely for all gain associated with prior depreciation. Ordinary recapture under the relevant rules and unrecaptured Section 1250 gain are not the same category. Ask your preparer to distinguish them rather than applying one blanket label or rate. [2]

A property with cost-segregated components, prior accelerated deductions, or business assets can require a more detailed allocation. A sale may include assets with different tax treatment. The financing schedule does not erase those differences.

For planning, ask for a year-of-sale tax estimate before counting all future principal as available spending money. If tax comes due before much cash arrives, the seller needs another source of liquidity. A long payment term can create a cash mismatch even when the reporting is correct.

The note's terms affect the tax result

Not every promise to pay is treated the same way. Publication 537 explains that a buyer's note that is not payable on demand or readily tradable generally is not treated as a payment when received. A demand or readily tradable obligation can be treated differently. [1]

Interest matters, too. If the stated interest is too low, the tax rules may treat part of the stated principal as interest or original issue discount. In some situations, interest income can arise before cash is received. Do not assume that calling the note “interest-free” makes the interest rules disappear.

Have counsel and the CPA review the same draft note. One professional should not be working from a payment schedule that differs from the signed legal document. Check the amount, rate, maturity, payment dates, prepayment terms, and any contingent features before closing.

The final agreement should also address practical questions. Who sends statements? Where are payments made? What counts as late? What happens after a default? Tax treatment does not replace a workable loan document.

Can the note be used inside the exchange instead?

A seller who wants full exchange treatment may ask whether the note can be handled within the exchange and converted into value used for replacement real estate. That is a deal-specific structuring question for the QI, CPA, and attorney. Merely making the note payable to the QI does not guarantee full deferral.

The team must address who owns the note, when it is transferred, what consideration is received, whether there is actual or constructive receipt, and how the replacement is bought on time. A buyer, note purchaser, or replacement seller may not accept the arrangement on the terms you need.

If a note must be sold, its market value may differ from face value. A discount, fee, or delay changes the economics. Do not count on having the full face amount available for the replacement without a confirmed plan.

I would ask for a written explanation of the proposed steps and their tax basis. A general article cannot approve a note buyout, related-party deal, or last-minute workaround. The ordinary exchange requirements remain relevant throughout. [3]

What if an intended exchange does not finish?

An exchange that starts in one tax year and fails in the next can raise installment-reporting questions. The answer depends on when the taxpayer receives, or has the right to receive, the funds and whether the exchange safe-harbor conditions were met. It is not automatic merely because the QI sends money after December 31. [1] [3]

The deferred-exchange regulations contain special coordination rules in paragraph (j)(2). They also require a bona fide intent to complete the exchange for the relevant protection. Those details matter when the funds span tax years.

Tell your CPA promptly if the exchange becomes uncertain. Share the sale date, identification, exchange agreement, notices, and the dates on which funds can be released. The agreement's restrictions and the actual events both belong in the analysis.

Do not plan a failed exchange as a casual way to shift tax years. Ask for advice before the sale, and compare a legitimate installment sale with the actual exchange you intend to pursue.

Review the borrower as carefully as the property

A note can show an attractive interest rate while being a poor credit risk. Ask why the buyer needs seller financing and how the loan will be repaid. If repayment depends on a future refinance, test whether the expected property income could support that loan under less favorable conditions.

Review the buyer's financial information, relevant experience, cash investment, and other obligations with qualified advisers. Determine what collateral secures the note and where your lien stands. A second-position lien can have a different recovery risk from a first-position lien.

Ask counsel about title, perfection of the security interest, guarantees, insurance, taxes, and rights after default. Do not assume that a personal guarantee has value without considering the guarantor's resources and enforceability.

Then weigh concentration. After selling one building, you might still depend on that building and the same buyer for a large share of your wealth. Receiving a note can reduce daily management without removing the property's financial importance to you.

Test the payment schedule against your needs

List the cash you need each year for living costs, reserves, taxes, and other commitments. Compare that list with the scheduled payments. Separate the interest portion from principal, because principal payments reduce the amount still invested in the note.

A large balloon payment deserves special attention. The borrower may expect to refinance or sell, but neither outcome is certain. Ask what happens if property values decline, interest rates rise, or the buyer cannot find financing at maturity.

Build a delayed-payment scenario. Could you cover your expenses if payments stopped for six months? What legal costs might arise? Would you be willing and able to take back a troubled property? These are planning questions, not predictions that a default will occur.

Also weigh early repayment. If the borrower can prepay, the expected income stream may end sooner than planned. Your tax and reinvestment plan should account for that possibility rather than assuming that every payment arrives on the original schedule.

Several other installment rules may matter

Related-party sales have special rules. A later sale by the related buyer can accelerate gain in some circumstances, and sales of depreciable property to related persons face further limits. Family involvement should be disclosed at the start, not after documents are signed. [1]

Using an installment obligation to secure borrowing can trigger the pledge rule when it applies. For certain large installment obligations, an interest charge on deferred tax may also apply. The thresholds and exceptions need to be checked against the actual deal. A large sale should not be modeled from a small example alone. [1]

Disposition of a note, forgiveness, repossession, or a material change in its terms can create added tax consequences. Bring proposed changes to the CPA before signing them. Do not assume that tax treatment established at closing stays unchanged no matter what happens later.

State rules and filing obligations also need review. A federal installment result is the starting point for that discussion, not a promise that each relevant state follows every detail.

Keep the exchange and note records together

Form 8824 reports the like-kind exchange math. Form 6252 is used to report qualifying installment-sale income. Other forms may also be needed for interest, capital gain, business-property gain, or depreciation recapture. The exact reporting depends on the taxpayer and assets. [4] [5]

Save the contract, note, security documents, closing statement, basis schedule, exchange agreement, replacement closing records, and the original installment math. Keep a payment ledger showing dates and the split between interest and principal.

Check that ledger each year. If a servicer reports a different balance or allocation, resolve the difference before filing. Track extra payments, missed payments, fees, and modifications. A tax preparer cannot calculate the correct result from the bank deposit total alone.

Make the file understandable to someone new. The next preparer should be able to see the original gain, amount deferred in the replacement, installment gross-profit percentage, and principal still unpaid. That prevents the same facts from being reconstructed differently each year.

Choose the financing and tax plan together

I would compare three possible paths before committing: an all-cash sale and exchange, a taxable installment sale, and a combined deal. For each, show expected cash timing, tax timing, borrowing risk, investment risk, costs, and the work that remains after closing.

Then ask which choice solves your actual problem. If the aim is to stop managing property, becoming a lender to a weak buyer may not be the relief you want. If the aim is stable cash flow, a large balloon may not fit. If the aim is full tax deferral, retaining a note may conflict with that goal.

A combined structure can be useful when the facts support it. Its complexity should earn its place by serving a clear purpose. I would rather understand a simpler deal well than accept a complicated one because the first-year tax estimate looks appealing.

The core team is your CPA, attorney, QI, and the professionals reviewing the replacement. Each has a different job. Put their conclusions into one written closing plan so the note, money transfers, property purchase, and tax reporting agree.

A higher sale price can hide a financing concession

Compare offers by more than the headline price. A buyer offering cash at closing and a buyer asking you to carry a long-term note are not offering the same thing. The note's rate, security, payment schedule, and borrower quality affect its economic value.

Suppose an offer includes a $300,000 note, but an outside buyer would pay only $270,000 for that note. The $30,000 difference is an economic signal: immediate cash and a promise of future cash have different values. It is not a claim that every note trades at that discount or that the discount automatically equals a tax deduction.

Ask your advisers to compare the cash offer with the financed offer after expected costs, taxes, and payment timing. Include legal work, servicing, and the possibility that collection takes longer than planned. If the financed offer is better only when every assumption works perfectly, identify that dependence before accepting it.

Do not confuse the note's stated interest rate with your total return. A missed payment, a negotiated reduction, enforcement costs, or a loss of principal can change the result. A higher rate may compensate for greater risk without eliminating that risk.

Also ask whether your replacement purchase depends on turning the note into cash. If it does, obtain realistic terms and a timeline from the parties who would complete that step. A hoped-for note sale is not the same as committed funding. Keep a fallback that does not require inventing a solution after the 45-day identification window has nearly ended.

This review helps separate negotiation from tax planning. First establish what the buyer is truly offering you. Then determine whether the exchange and installment rules can support a deal you would be willing to accept on those economic terms.

Frequently asked questions

Can I keep a buyer's note and still complete a partial 1031 exchange?

Potentially. IRS Publication 537 addresses receiving like-kind property and an installment obligation in the same exchange. Eligibility and gain allocation depend on the facts. The note is not like-kind property, and the deal needs review under both sets of rules. [1]

Is every principal payment partly tax-free?

No. The installment gross-profit percentage determines the gain portion in a qualifying deal. That percentage can be 100%, as in the combined example above. Basis, deferred gain, debt, expenses, and recapture affect the math. Interest is considered separately. [1]

Does installment treatment postpone depreciation recapture?

Ordinary depreciation recapture generally must be reported in the sale year, even without a payment. It should be distinguished from unrecaptured Section 1250 gain. Have the CPA classify the gain and estimate the timing before you set the payment terms. [1] [2]

Can I call the entire payment principal to avoid interest income?

No. Inadequate stated interest can cause the tax rules to reclassify amounts as interest or original issue discount. The result depends on the contract and applicable rules. The legal note and tax payment schedule should be reviewed together. [1]

Does placing the note with the QI guarantee full deferral?

No. The entire sequence must work under the exchange rules. Ownership of the note, receipt of value, timing, related parties, and replacement purchase all matter. Have the QI and your advisers approve the actual steps before the sale closes. [3]

What if the buyer pays the note off early?

Principal received early can bring eligible installment gain into income sooner than expected. It also ends or reduces the planned interest stream. Review prepayment rights and the tax effect before assuming the original schedule will last for the full term. [1]

What should I ask before accepting seller financing?

Ask why the buyer needs it, how repayment will work, what secures the note, and what happens after default. Then ask the CPA how much tax is due now and later. A useful plan addresses borrower quality and cash needs as carefully as tax timing.

Sources and references

  1. Internal Revenue Service. Publication 537 (2025), Installment Sales. Current IRS page retrieved October 6, 2026; publication edition 2025 where specified.Relevant sections: Figuring Installment Sale Income; Like-Kind Exchange; Depreciation Recapture; Pledge Rule; Interest on Deferred Tax. Accessed October 6, 2026.
  2. Internal Revenue Service. Publication 544 (2025), Sales and Other Dispositions of Assets. 2025 edition, current publication reviewed October 6, 2026.Relevant sections: Like-Kind Exchanges; Deferred Exchange; Partially Nontaxable Exchanges; Basis of property received; Partnership Interests. Accessed October 6, 2026.
  3. Office of the Federal Register / Treasury Department. 26 CFR § 1.1031(k)-1, Treatment of deferred exchanges. eCFR page displayed Title 26 current through October 2, 2026.Relevant sections: Paragraphs (a), (b), (c)(1)–(6), (d), (e), (f), (g), and (k). Accessed October 6, 2026.
  4. Internal Revenue Service. Instructions for Form 8824 (2025), Like-Kind Exchanges. 2025 edition, current instructions reviewed October 6, 2026.Relevant sections: Like-kind property; Line 5; Lines 15 and 15a; Lines 18–25; related-party exchanges. Accessed October 6, 2026.
  5. Internal Revenue Service. About Form 6252, Installment Sale Income. Current IRS page retrieved October 6, 2026; publication edition 2025 where specified.Relevant sections: Purpose and current Form 6252 resources. Accessed October 6, 2026.

Educational information, not an offer or a personal tax, legal, or investment recommendation. Examples are hypothetical and omit stated adjustments. Tax treatment depends on your facts and current law. Review your transaction with your CPA, attorney, and qualified intermediary. Real estate investments can lose value and may be illiquid.

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