What Is a Backup Offer, and How Does a Kick-Out Clause Work in a Competitive Sale?

A backup offer is a signed purchase contract that sits behind the home's primary accepted offer and only becomes active if that primary deal falls through, while a kick-out clause lets a seller who accepted a contingent offer keep marketing the home and give the first buyer a short deadline to remove their contingency if a better offer arrives. The two work together: a kick-out clause is what lets the seller legally accept a backup offer in the first place, and the backup offer itself is usually a binding contract that includes its own earnest money, due once the backup position activates. Buyers considering either path should understand that a backup offer isn't a guarantee of buying the home, and a seller relying on a kick-out clause needs the notice terms spelled out clearly to avoid a dispute later.

How Does a Kick-Out Clause Actually Work?

A kick-out clause applies when a seller accepts an offer with a contingency—most often a buyer who needs to sell their current home first—and wants the right to keep showing the property and accepting other offers in the meantime. If a stronger, typically non-contingent offer comes in, the seller notifies the first buyer in writing, usually through agents, giving them a set window—commonly 24, 48, or 72 hours—to either remove their contingency and proceed or step aside. If the first buyer removes the contingency in time, usually with proof of financing, the sale continues with them; if they don't, the seller can cancel that contract and move forward with the new offer. For the clause to hold up, it needs to be written into the contract and signed by both parties—it isn't something a seller can invoke after the fact.

What Happens to the First Buyer's Earnest Money If They're Kicked Out?

If the first buyer can't or won't remove their contingency within the deadline, the seller can terminate that contract, and what happens to the earnest money depends on the specific agreement and the reason the contract ended. In many cases, if the buyer is canceling because a legitimate contingency wasn't satisfied, the earnest money is returned to them; the exact outcome is governed by the contract language and local escrow rules, which is why buyers facing a kick-out notice should review their contingency status and talk to their agent before the deadline rather than after it passes.

What Should Go Into a Backup Offer?

A backup offer is typically structured much like a standard purchase offer, but it includes language making clear the contract only becomes active if the primary deal terminates, along with an activation trigger tied to the seller's written notice that the first contract has ended. Earnest money for a backup offer is usually not due at signing—it's triggered by activation—and the backup buyer often gets a short option or due-diligence period, commonly five to ten days, once their offer goes active so they can do inspections before fully committing. It's worth including a provision that lets the backup buyer walk away if they go under contract on another home while waiting, since there's no set timeline for when—or whether—the primary deal will fall through.

Should a Buyer Submit a Backup Offer?

A backup offer makes the most sense when a buyer genuinely wants a specific home and is comfortable waiting without a guaranteed outcome, since the primary buyer may simply close on schedule and the backup position never activates. Buyers in backup position should keep searching and stay realistic about the odds, ask their agent how far along the primary contract is in its timeline, and make sure a walk-away contingency is in place in case they find and want to pursue another property in the meantime. It's not a passive waiting game—actively tracking the primary transaction's status through your agent is what keeps a backup offer from quietly expiring into a missed opportunity elsewhere.

Why Would a Seller Want a Backup Offer or Kick-Out Clause?

For a seller, a kick-out clause paired with the ability to accept a backup offer provides real leverage: it keeps a contingent sale moving forward on a deadline instead of open-ended, and it gives the seller a ready path forward if the first buyer can't perform. A solid backup offer can also strengthen the seller's position if the primary buyer requests expensive repairs or a price reduction after inspection, since the seller has another buyer ready to step in rather than needing to start the listing over. The tradeoff is that some buyers hesitate to make an offer on a home that's already under contract, even with a kick-out clause in place, so sellers shouldn't assume backup interest will always materialize.

Frequently Asked Questions

Is a backup offer a binding contract?
Yes, once both parties sign it, though it typically isn't an active purchase contract until the primary deal terminates and the seller formally notifies the backup buyer.

How much notice does a kick-out clause usually give the first buyer?
It varies by contract, but 24, 48, or 72 hours is common; the specific window should be clearly written into the original agreement rather than left open-ended.

Can a seller accept a backup offer without a kick-out clause?
Generally no—without contract language permitting it, a seller typically can't cancel an accepted contingent offer just because a better one arrives, which is exactly why the kick-out clause has to be negotiated and signed up front.

Does the backup buyer have to pay earnest money right away?
Usually not at signing. Earnest money for a backup offer is typically triggered once the backup position activates, not when the backup contract is first signed.

Updated for October 2026.