Installment Sale of a Rental — Tax Reporting & Recapture

TL;DR: An installment sale lets you spread a rental property's capital gain over the years you receive payments, but depreciation recapture is fully recognized in the year of sale. Use Form 6252 to report the sale and track the gain portion of each payment. Interest on deferred payments is ordinary income, reported separately. Keep every contract, payment log, and amortization schedule — you'll need them for years.

_Last reviewed: July 2026 · 6 min read_

You sell a rental property with seller financing and the buyer pays over five years. Do you owe tax on the entire gain this year, or can you spread it out? An installment sale lets you defer most capital gain to the years payments arrive, but the IRS treats depreciation recapture differently — that part hits immediately. Here's the framework for reporting an installment sale of a rental property and what records to keep.

Okoniq Property Hub logs every property transaction, tracks your original cost basis, and stores installment sale contracts so you have the full chain when Form 6252 is due each year.

What is an installment sale and how does it spread a rental's gain?

An installment sale occurs when you sell property and receive at least one payment after the year of sale. The IRS lets you report the capital gain portion of each payment as you receive it, spreading the tax liability over multiple years. This is automatic unless you elect out on your return.

Here's why landlords use it: you sell a rental for $400,000, your adjusted basis is $250,000, and the buyer pays $100,000 down then $100,000 annually for three years. Without installment treatment, you'd owe tax on the entire $150,000 capital gain in year one, even though you only received $100,000. With installment treatment, you report roughly $37,500 of capital gain each year (25% of each $100,000 payment, since gain is 37.5% of the contract price). You pay tax as the cash arrives.

The gross profit percentage — gain divided by contract price — determines how much of each payment is taxable gain. In the example above, $150,000 gain ÷ $400,000 contract price = 37.5%. Every dollar the buyer hands you, 37.5¢ is capital gain. The rest is return of basis. Depreciation recapture complicates this, which we address next.

Related option: if you need to defer 100% of gain and aren't interested in monthly income, a 1031 exchange might fit better. An installment sale defers tax; a 1031 defers it and lets you roll all proceeds into replacement property.

Why is depreciation recapture all recognized in year of sale?

Depreciation recapture — the portion of gain attributable to depreciation deductions you claimed while renting the property — cannot be deferred under installment sale rules. It is fully recognized in the year of sale, regardless of how little cash you receive that year.

Suppose you sold that $400,000 rental, your original cost was $300,000, and you claimed $50,000 of depreciation over the years. Your adjusted basis is now $250,000. Of the $150,000 total gain, $50,000 is unrecaptured Section 1250 gain (depreciation recapture on real property), taxed at your ordinary rate up to a cap. The remaining $100,000 is long-term capital gain. The IRS requires you to report the entire $50,000 of recapture in year one. Only the $100,000 capital gain spreads across the payment years.

This means even if the buyer pays $100,000 down and you won't see another dollar for twelve months, you owe tax on $50,000 of recapture plus a portion of the $100,000 capital gain in year one. Plan for that tax bill before you sign the contract. Many landlords underprice the risk here and face a cash-flow surprise in April.

If you've taken bonus depreciation or cost segregation deductions, part of the recapture may be taxed as ordinary income rather than at the preferential capital-gains rate, and that portion also hits in year one. Confirm the breakdown with your CPA before closing.

How do you report an installment sale on Form 6252?

Form 6252, Installment Sale Income, calculates the gain you report each year. You file it in the year of sale and every subsequent year you receive a payment.

In year one, Part I describes the sale: contract price, down payment, and the property's adjusted basis. Part II calculates the gross profit percentage. Part III shows the payment received that year and applies the percentage to determine how much is gain. Depreciation recapture goes on a separate line and is added to that year's income in full.

In subsequent years, you skip Part I and go straight to Part III: report the payment, multiply by the gross profit percentage, and that's your capital gain for the year. Keep every completed Form 6252 — the IRS may ask you to reconcile across years if the buyer defaults or if you later sell the installment note.

Interest income on the deferred payments appears on Schedule B (or 1040 line 2b if under the filing threshold), not on Form 6252. The contract should state an interest rate. If it doesn't, the IRS imputes interest under Section 1274 or 483, and you'll owe tax on phantom interest you didn't actually receive. Always specify a market rate in the contract and document it.

Need help staying organized across multiple years? Okoniq stores each year's Form 6252, cross-references the original sale contract, and flags when the next payment is due so you don't miss a reporting year.

What happens if the buyer defaults or you repossess the property?

If the buyer stops paying and you repossess the property, the IRS treats it as a new taxable event. You report the repossession on Form 6252 in the year it occurs, and the remaining deferred gain may be recognized immediately or adjusted depending on the property's fair market value at repossession.

Broadly: if the property's FMV at repossession is less than the remaining installment obligation, you may recognize a loss. If it's higher, you may recognize additional gain. The rules under Section 1038 (for personal residences) differ from those under general repossession rules for investment property. Your CPA will need the contract, the payment history, and an appraisal or BPO at the time of repossession to calculate the adjustment.

A buyer default also means you stop receiving the cash you were counting on to pay the annual tax bill. Some landlords include a deed-in-lieu-of-foreclosure clause in the contract to simplify repossession, but that doesn't change the tax treatment. If you're considering seller financing on a rental, price in the risk of default — both the legal cost of repossession and the tax acceleration.

What records do you need to keep for an installment sale?

You'll need every piece of paper tied to the sale until the final payment is made and at least three years after you file that year's return. The IRS can ask you to prove the gross profit percentage, the payment schedule, and the allocation between principal and interest at any point.

Keep the original installment sale contract, any amendments or side agreements, the buyer's payment history (date, amount, principal vs interest breakdown), the closing statement from the year of sale, and every year's completed Form 6252. If the buyer refinances the note or pays it off early, document that transaction separately — an early payoff accelerates the remaining deferred gain into that year.

Also retain records of your original cost basis and all depreciation schedules. If the buyer defaults and you repossess, you'll need an appraisal or BPO showing the property's FMV at repossession. Landlords who sell multiple properties on installment terms should keep a summary spreadsheet cross-referencing each property's Form 6252 filings — it's easy to lose track after a few years.

Okoniq Property Hub stores installment contracts, payment logs, and the depreciation history for each property in one timeline. When you receive a payment, log it in the app and tag it to the sale — your CPA can export a complete package at tax time.

FAQ

Can I elect out of installment sale treatment if I'd rather pay the entire gain up front?

Yes. Report the full gain in the year of sale on Schedule D and attach a statement titled "Election Out of Installment Method" to your return. You might do this if you have capital losses to offset, or if you expect to be in a higher bracket in future years and want to take the hit now. The election is irrevocable after the due date of that year's return.

Does the installment method apply to rental property inside an LLC or S corp?

Yes, as long as the entity is a pass-through. The gain flows to your personal return and you report it on your Form 6252. If the entity is a C corp, different rules apply — consult a CPA. Installment treatment is not available for sales to related parties if they resell the property within two years, with some exceptions.

What happens if I die before the buyer finishes paying?

The remaining installment obligation is included in your estate at its fair market value, which is often the remaining principal balance. Your heirs inherit the obligation and continue to report the gain as payments arrive, but they get a stepped-up basis in the note equal to its FMV at your death. This can reduce or eliminate the gain they recognize on subsequent payments. Estate planning matters here — talk to your attorney.

Can I use a 1031 exchange and an installment sale on the same property?

In limited cases, yes. If you 1031 into replacement property but receive some cash boot from the relinquished property sale, that boot can be reported on installment if the buyer is paying over time. The exchange defers most of the gain; the installment method defers tax on the boot. This is complex and requires careful structuring with a qualified intermediary and a CPA who has done it before.

<div class="glass rounded-2xl p-5 mt-7 max-w-4xl border border-red-400/30 bg-red-500/5"> <div class="flex items-start gap-3"> <span class="text-2xl flex-shrink-0">⚠️</span> <div class="flex-1 min-w-0"> <p class="text-red-200 text-sm font-bold">Not tax advice</p> <p class="text-slate-300 text-xs mt-1 leading-relaxed"> This post assumed a simple installment sale with no related-party resale, no like-kind exchange overlay, and no Section 453A interest charge for large deferred obligations. It does not account for state-level installment sale rules, which vary, or for changes to recapture or imputed-interest provisions after January 2025. Tax rules change and depend on your specific situation. Talk to a licensed CPA before acting on anything here, and confirm current figures on IRS.gov. </p> </div> </div> </div>