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Answers · Intermediaries and closing

Do I need an exchange cooperation clause in my sale contract?

Not by law: no statute or regulation requires it. But the clause gives the buyer notice, consent to assign the contract to your QI and a no-cost promise.

By Breakwater Exchange · Reviewed by our 1031 advisory team · Last reviewed

The short answer

No statute or regulation requires an exchange cooperation clause; Legal 1031 says so directly, and Asset Preservation notes that the Internal Revenue Code does not require the language. Include one anyway, because the regulation does require that the buyer receive written notice of the assignment of your contract to the intermediary on or before closing, and the clause obtains that consent up front while promising the buyer no delay, cost or liability. Put a mirror-image clause in your replacement purchase contract, where the assignment right and a closing date inside your 180 days matter even more.

At a glance

Legally required?No (Legal 1031; Asset Preservation); the regulation requires only notice of assignment
What the clause doesDiscloses the exchange, consents to assignment to the QI, promises no cost or delay
Regulation behind it26 CFR 1.1031(k)-1(g)(4)(v): assignment plus written notice on or before transfer
Cost to the buyerNone: it 'will not delay the closing or cause additional expense' (IPX1031 wording)
Purchase-side must-havesAssignability, a closing date before day 180, deposit held by escrow
Reverse exchangeName the exchange accommodation titleholder as an assignee too (Legal 1031)

Not required by the Code or the regulations, but it does the regulation's paperwork early

Legal 1031 states that there is no statutory requirement that a purchase and sale agreement contain language saying one party is taking part in an exchange, and Asset Preservation says the same of the Internal Revenue Code. The exchange works without the clause as long as the intermediary is assigned into the contract and all parties get written notice on or before the transfer (26 CFR 1.1031(k)-1(g)(4)(v)).

The clause is where that notice and consent get handled while everyone is still cooperative. Asset Preservation's checklist frames it as entering an 'assignable' contract in the exchanger's name 'and/or assigns', with language recognizing the exchange and the other party's consent.

The three sentences every version contains, and the sample language QIs publish

Every published clause makes the same three points: the seller intends a section 1031 exchange, the exchange will not delay closing or cost the buyer anything, and the seller may assign its rights to a named intermediary with the buyer's cooperation. IPX1031's sale-side language opens: 'Notwithstanding anything to the contrary, Buyer hereby acknowledges that it is the intent of Seller to effect an IRC §1031 Tax Deferred Exchange, which will not delay the closing or cause additional expense to Buyer.'

Asset Preservation's version adds a hold-harmless: the seller 'agrees to hold buyer harmless from any and all claims, costs, liabilities, or delays in time resulting from such an exchange', and the buyer 'agrees to an assignment of this contract to a qualified intermediary by the seller.' Legal 1031's clause has the buyer agree 'to cooperate with the Seller and the Qualified Intermediary to complete the exchange.'

Use your intermediary's own wording and its legal name as the assignee. The clause is a contract term, so have your attorney confirm it fits the form your state's agents use.

What the buyer gives up by signing: nothing, and the hold-harmless sentence says so

A buyer who signs a cooperation clause takes on no tax consequence, pays nothing extra and keeps every remedy against you. The clause says the exchange will not delay closing or add expense, and the hold-harmless sentence, which LegalClarity calls the single most important sentence in the clause from the buyer's perspective, makes you responsible for any cost the exchange creates.

LegalClarity also notes that the seller remains responsible for everything promised in the contract even though the intermediary is the party receiving the proceeds, and that the buyer has no contractual relationship with, or recourse against, the intermediary. The assignment moves your rights for exchange purposes; it does not move your obligations.

The one thing a buyer should watch is timing pressure: LegalClarity advises buyers to insist on a closing date that does not flex with the seller's replacement search. Agree to that, since your deadlines run from the closing and a firm date helps you too; What it means for my sale when the buyer is doing a 1031 covers the reverse situation.

The replacement purchase contract needs the mirror clause plus four protective terms

On the purchase side the clause flips: the seller acknowledges the buyer's exchange, promises no delay or expense to the seller, and consents to assignment of the buyer's rights to the intermediary. IPX1031, Legal 1031 and Asset Preservation each publish a purchase version with that structure.

Because the purchase leg is where deadlines bite, add terms the sale-side clause never needs.

  • An express right to assign to the intermediary without the seller's further consent, since the intermediary must be assigned in before it can wire the deposit or the price
  • A closing date, including every permitted extension, that ends before your day 180; Are the 45 days part of the 180 days? shows how the periods nest
  • Earnest money held by the title company or escrow, never by the seller, so exchange funds can pay it and be credited at closing; see Who holds the earnest money deposit?
  • A contingency for the intermediary's funding, so a lender or seller delay does not put you in default; Does a lender or seller delay extend my deadline? explains that it does not

Reverse and improvement exchanges need the accommodation titleholder named as well

If you will buy before you sell, the contract must allow assignment not only to the intermediary but to the exchange accommodation titleholder that parks the property. Legal 1031's reverse-exchange clause names both its intermediary and its EAT affiliate as permitted assignees, states that the EAT is not the seller's agent except for transfer, documentary and stamp fees, and has the other party agree to cooperate with both.

Legal 1031 calls this best practice for parking exchanges and notes that some states require specific language. Reverse 1031 Exchanges covers the structure and its cost.

Four checks before you sign either contract

Run both contracts against this list before signatures, and have your CPA or attorney confirm the wording for your state.

  • Your name on the sale contract matches the deed, and the buyer's name is the one that will sign the notice of assignment
  • The clause names your intermediary's legal entity as assignee and includes the no-delay, no-cost and hold-harmless sentences
  • No term entitles you to receive any deposit or credit before closing; pre-closing cash is boot, as Can I accept an option payment or early release of earnest money? explains
  • The purchase contract's outside closing date sits inside your 180 days even after every permitted extension

Related questions

Can I add the clause by amendment after the contract is signed?

Yes. Asset Preservation notes an exchange can be structured even when the language is added shortly before closing, and an amendment or a standalone notice of assignment signed by the buyer serves the same purpose.

What if the buyer refuses to include it?

The exchange still works: the regulation requires that the buyer be notified in writing of the assignment on or before closing, not that it agree to a clause. Have the intermediary deliver the notice through the closing agent and keep proof of delivery.

Does the clause obligate the buyer to wait for my replacement property?

No, and it should not try to. The sample language promises the buyer no delay; your timing risk is managed by identifying early and lining up backup replacements, not by holding the buyer.

Should the clause name the intermediary before I have chosen one?

Name it if you can, since the assignment runs to a specific entity. If the intermediary is not yet chosen, language permitting assignment to a qualified intermediary works, and the notice of assignment delivered before closing supplies the name.

Does the clause need to mention the 45-day and 180-day deadlines?

No. The deadlines come from the regulation and run from your closing whatever the contract says; the clause needs only the statement of intent, the consent to assignment and the no-cost promise.

Sources

Checked against these publications on September 19, 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.

  1. 26 CFR § 1.1031(k)-1, Treatment of deferred exchanges (constructive receipt, qualified escrow, qualified intermediary, (g)(6) restrictions)
  2. Legal 1031: Cooperation clause (no statutory requirement; sample seller and buyer language)
  3. Legal 1031: Cooperation clause for a reverse exchange (EAT language)
  4. IPX1031: Exchange cooperation clauses for contracts
  5. Asset Preservation, Inc.: 1031 exchange contract language (hold-harmless version; not required by the Code)
  6. Asset Preservation, Inc.: 1031 exchange checklist ('assignable' contract)
  7. LegalClarity: What are the risks for a buyer in a 1031 exchange?

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