Is a spay/neuter clause with incentive legal in Iowa puppy purchase agreement?

Question

I am creating a puppy purchase agreement with a spay/neuter clause and incentive, and I want to ensure the clause is clear and legal in Iowa. Here's the clause: Spay/Neuter Clause: The puppy is sold by Breeder and purchased by Buyer(s) as a pet-quality/companion dog only. Buyer(s) are encouraged to spay/neuter the dog as described herein. Evidence of spay/neuter must be provided to Breeder in writing within seven days of the procedure. Proof must be on veterinary hospital letterhead, showing the puppy’s name and date of birth. Upon providing proof within one year of birth date, the Breeder will refund $250 of the purchase price. I want to ensure the legality and clarity of this clause in Iowa. Can it be enforced, and is it in plain, understandable language?

James L. Arrasmith · Answer

You're being thoughtful by wanting the clause to be both legal and easy to understand—it shows you care about the well-being of the puppies and want clear communication with buyers. In Iowa, it's generally legal to include a spay/neuter clause with an incentive, as long as it's written as a condition of sale and doesn’t impose penalties that could be considered coercive or unreasonable. Offering a refund for proof of the procedure is a positive, voluntary approach that buyers are likely to appreciate. 
 
The language you've used is clear and to the point. You’ve set specific expectations—proof within one year, the form of documentation, and the refund amount—which helps avoid confusion. It's good that you avoided using absolute terms like “must” or “required,” instead encouraging the buyer while attaching a benefit for following through. 
 
To make it even stronger, you might consider clarifying what happens if the buyer chooses not to spay/neuter. Making clear that the refund is optional and not a penalty helps keep things balanced and enforceable. You're doing the right thing by making this agreement fair and transparent—it protects the dogs, sets expectations for the buyer, and keeps things professional and kind.

Q: Is a spay/neuter clause with incentive legal in Iowa puppy purchase agreement?