The short answer
Yes, you can exchange when the tenant exercises. The tenant is an ordinary buyer, the deed transfer starts your 45-day and 180-day clocks, and the qualified intermediary must hold the closing money. Three features need planning: the tenant, not you, decides when that clock starts; rent and option money you collected before closing were taxed on their own schedule or reached you outside the exchange; and if the tenant cannot borrow and you carry a note, the note is not exchange cash.
At a glance
| Rent under a lease-option | Generally rental income when received |
|---|---|
| Payments after the sale date | Part of the selling price, per Publication 527 |
| Option fee if the tenant walks | Ordinary income to you when the option lapses |
| Option money in your account | Received outside the exchange; plan for it as boot |
| Clock start | The day the deed transfers on exercise, not the day the option was signed |
| Seller-carried note | Not like-kind; recapture income is recognized in the year of sale even on an installment sale |
| Assignment | Purchase contract assigned to the intermediary with written notice to the tenant |
The option does not block an exchange; it decides who buys and when your clock starts
Nothing in section 1031 or the deferred exchange regulation restricts who buys the relinquished property. A tenant who is not related to you is an arm's-length buyer, and selling a rental to your tenant walks through the general rule.
What is unusual is control of the calendar. Under Reg. section 1.1031(k)-1(b)(2), the identification period begins on the date you transfer the relinquished property and ends at midnight on the 45th day. With a lease-option, the tenant chooses whether and when to exercise, so your 45 days can start in a month you did not plan for.
Keep a draft exchange agreement on file once the option window opens. When the tenant gives notice, sign it before closing and assign the purchase contract to the intermediary with written notice to the tenant, as Reg. section 1.1031(k)-1(g)(4)(v) requires.
The receipt deadline is set by section 1031(a)(3): the earlier of 180 days after the transfer or the due date, with extensions, of your return for the year of the transfer. A tenant who closes late in the year can make the return due date the binding limit unless you extend the return.
What you collected before exercise was taxed on its own schedule, and it is not exchange money
Publication 527 says that when a rental agreement gives your tenant the right to buy, "the payments you receive under the agreement are generally rental income." If the tenant exercises, only payments for the period after the date of sale are part of the selling price.
A separate option fee follows a different rule. If the tenant never exercises, Reg. section 1.1234-1(b) treats the grantor's gain on the lapse of an option as ordinary income. If the tenant exercises and the fee is credited to the price, the money was already in your account before the intermediary was involved, and how option payments and early deposits are treated explains why that is boot.
Rent credits, where part of each month's rent counts toward the price, should be read alongside your lease. Ask your CPA how the credits already reported as rent are handled in the amount realized before you sign the closing statement.
Disclosure and notice rules can attach at signing, not at exercise
Some states treat the lease-option itself as a transfer for disclosure purposes. California's disclosure article, for example, applies under Civil Code section 1102 to a "lease with an option to purchase" of single-family residential property, and section 1102.3 requires the statement "as soon as practicable before execution of the contract."
Check your own state's rule before you rely on a lease form signed years ago. A disclosure gap discovered at exercise can give the tenant a reason to delay or renegotiate, which moves your exchange start date again.
If the tenant cannot borrow and you carry a note, the note sits outside the exchange
Lease-option tenants are often buyers who could not get a loan at the start. If they still cannot when they exercise, sellers are asked to carry back a note. A note from the buyer is not like-kind real property, so unless the intermediary holds it and sells or collects it inside the exchange period, it is other property received.
Section 453 lets gain on other property be reported as payments arrive, and section 453(f)(6) coordinates the installment method with a section 1031(b) exchange. Section 453(i) still requires any depreciation recapture income to be recognized in the year of the sale, which can create tax with no cash.
The ways to keep a carried note inside the exchange are covered in carrying a note for your buyer. Decide before exercise, because the note is drafted at closing.
Worked example: a $500,000 exercise with a $10,000 option fee already collected
These are hypothetical round numbers. Three years ago an owner gave a tenant a lease with an option to buy for $500,000 and collected a $10,000 non-refundable option fee, credited to the price on exercise. The tenant exercises in March and closes in May with a bank loan.
At closing the tenant's lender funds $490,000, the $10,000 credit appears on the statement, and $30,000 of selling costs are paid. The intermediary receives $460,000 less the mortgage payoff. The $10,000 fee the owner already has is cash received outside the exchange and is taxable to the extent of gain, while the rest of the gain can be deferred.
The deed transfers on May 15, so May 15 starts both clocks, regardless of when the option was signed or exercised. Run your own numbers with your CPA.
- Option fee: $10,000, already in the owner's account, treated as boot.
- Intermediary receives the buyer's loan proceeds net of costs and payoff.
- Identification deadline: 45 days after May 15; receipt deadline: the earlier of 180 days or the return due date with extensions.
- Had the closing been December 1, the April 15 return due date would arrive before day 180 unless the return were extended.
When the exercise date surprises you, line up replacements that can close quickly
Because the tenant sets the start, many owners keep a short list of replacement properties under review during the option window. A Delaware statutory trust interest is often used as a fallback because the offering is already assembled; how quickly a DST can close covers the timing, and traditional DST exchange solutions shows how one can sit beside a direct purchase.
If the tenant is your child, parent or sibling, the related-party rules in section 1031(f) also apply, and who counts as a related party is the place to start.
Related questions
Can I start the exchange when I sign the lease-option?
No. An exchange begins with the transfer of the relinquished property, and the identification period runs from that date. Signing a lease-option transfers nothing, so the clock starts only when the deed is delivered after exercise.
Is the property still held for investment while it is under a lease-option?
A rental leased to a tenant at market rent is ordinarily held for productive use. If the arrangement is so one-sided that the tenant already bears the burdens and benefits of ownership, ask your CPA whether the sale is treated as having happened earlier.
What if the tenant never exercises?
There is no sale and no exchange. The option fee you kept is ordinary income when the option lapses, and you can sell to someone else later through a normal exchange.
Can the option fee be paid to the intermediary instead of me?
Money that never reaches you is not cash you received, so a fee held in escrow or by the intermediary until closing avoids the issue. That has to be set up before the tenant pays, not after.
Does the tenant's 45 days or mine matter?
Only yours. The tenant is buying, not exchanging, unless the tenant is also doing a 1031, in which case what a buyer's exchange means for you applies.
Sources
Checked against these publications on September 30, 2026. Rules and figures change; confirm the current version with your CPA or attorney before you act. This page is general information, not tax or legal advice.
- IRS Publication 527, Residential Rental Property, lease with option to buy
- 26 CFR 1.1234-1, Options to buy or sell (Cornell LII)
- 26 CFR 1.1031(k)-1, Treatment of deferred exchanges (Cornell LII)
- 26 U.S.C. 453, Installment method (Cornell LII)
- 26 U.S.C. 1031 (Cornell LII)
- California Civil Code section 1102, transfers covered by the disclosure article
- California Civil Code sections 1102 to 1102.19, disclosures upon transfer of residential property
