Buying or Selling a Horse: Every Document You Need (2026 Guide)

By Brian Bickell, who raises paint and quarter horses at Bickell Ranches in Stillwater, Oklahoma.

Buying a horse is exciting. The test ride went well. You love the horse. You're ready to shake hands and load up.

And then someone asks: "Do you have the paperwork?"

Horse transactions involve more documentation than most people expect — especially first-time buyers. A handshake might feel like enough, but when something goes wrong six months later (and in the horse world, something always can), the paperwork is what protects you.

This guide covers every document involved in buying or selling a horse, why each one matters, and who's responsible for providing it.

Educational, not legal advice. Horse sales touch contract law, UCC rules, lien law, and breed-registry policy — all of which vary by state and registry. For anything high-value or contentious, talk to an equine attorney.

In This Guide

• The Essential Documents
  • 1. Bill of Sale
  • 2. Registration Papers
  • 3. Coggins Test
  • 4. Pre-Purchase Examination
• Documents the Seller Should Provide
• Documents the Buyer Should Prepare
• Protecting Yourself Against Liens
• Trial Periods and Lease-to-Own
• The Complete Buyer's Checklist

The Essential Documents

1. Bill of Sale

This is the most basic and most important document in any horse transaction. A bill of sale is your proof of purchase and transfer of ownership.

What it should include:

• Full legal names and addresses of buyer and seller
• Horse description — registered name, barn name, breed, color, sex, age, date of birth, registration number, microchip or brand (if applicable)
• Purchase price and payment terms
• Date of sale
• Signatures of both parties
• "As-is" or warranty clause — this is critical (more on this below)

Recommended additions:

• Seller's representation that they own the horse and have the authority to sell it
• Disclosure of known health issues, vices, or behavioral problems
• When risk of loss transfers from seller to buyer (at signing? at pickup? at delivery?)
• Dispute resolution clause (which state's law governs)

Do you need it notarized? No state universally requires notarization for horse bills of sale, but it strengthens enforceability. Some brand-inspection states (Montana, Wyoming, Colorado, etc.) may require notarized bills of sale for brand-inspected livestock.

The "as-is" clause: In most states, horses are considered "goods" under the Uniform Commercial Code (UCC Article 2). Without an explicit "as-is" statement, the buyer may have an implied warranty claim if the horse turns out to have undisclosed issues. Sellers should include clear "as-is, where-is" language. Buyers should understand what they're giving up by accepting it.

2. Registration Papers (Breed Transfer)

If the horse is registered with a breed association, the registration must be transferred to the buyer's name. An unregistered horse with a registration number isn't your registered horse until the transfer is complete.

How transfers work for major registries:

Registry	Process	Approximate Fee	Timeline
AQHA (Quarter Horse)	Seller signs transfer section on certificate, buyer submits to AQHA	$25–$50 (member/non-member)	2–6 weeks
APHA (Paint)	Same process as AQHA	$25–$40	2–6 weeks
Jockey Club (Thoroughbred)	Seller initiates online or mails signed transfer	$75–$100+	Varies
ApHC (Appaloosa)	Seller signs, buyer submits	$15–$40	2–6 weeks
AHA (Arabian)	Seller signs, buyer submits	$25–$50	2–6 weeks

Fees are approximate and subject to change. Check with the registry directly for current rates.

Critical warning: If the seller does not transfer the registration, the buyer has no proof of registered ownership. Without the transfer, the horse cannot be shown in breed shows, bred with registered status, or resold as registered.

Protect yourself: Make the transfer a condition of sale. Either:

• Have the seller sign the transfer paperwork at the time of sale, or
• Hold a portion of the purchase price in escrow until transfer is confirmed, or
• Handle the transfer paperwork together at closing

Don't drive away hoping the seller will mail the papers later. Too many buyers learn this lesson the hard way.

3. Coggins Test

A current negative Coggins test (EIA) is required for horse sales in most states. The seller typically provides it.

• Must be current — usually within the last 12 months (6 months in California)
• Required by law for change of ownership in most jurisdictions
• Required at all auction markets
• Also needed if the horse will be transported across state lines after purchase

If the seller can't produce a current Coggins, that's a red flag. It suggests the horse hasn't had routine veterinary care, or worse, there may be a reason they're avoiding the test.

4. Pre-Purchase Examination (PPE)

A PPE isn't legally required, but skipping it is one of the most expensive mistakes a buyer can make.

What a standard PPE includes (AAEP 5-stage exam):

1. Observation at rest — conformation, eyes, heart and lungs, skin condition
2. Walk and trot in hand — flexion tests on all four limbs, watching for lameness
3. Exercise — under saddle or on the lunge line, assessing performance and soundness
4. Rest and recovery — monitoring heart and respiratory recovery
5. Second trot-up — repeat lameness evaluation after exercise

Optional add-ons:

• Radiographs (X-rays) — feet, hocks, stifles, knees. Standard for horses over ~$5,000.
• Upper airway endoscopy — primarily for racehorses and performance horses
• Ultrasound — tendons and ligaments
• Drug screen — blood draw to test for pain maskers, sedatives, or anti-inflammatories that could hide lameness. Consider this strongly.
• Reproductive exam — for breeding stock
• Blood work — CBC and chemistry panel

Cost: $250–$500 for a basic exam, $1,000–$2,500+ with full imaging. In major equine markets (Wellington, Lexington, Scottsdale), even basic exams can exceed $500.

Who pays: The buyer. You select the veterinarian. The vet works for you, not the seller.

Important: A PPE doesn't "pass" or "fail" a horse. It identifies findings for your risk assessment. A horse with mild arthritis might be perfect for trail riding and a deal-breaker for upper-level eventing. The vet gives you information; you make the decision.

Keep the records. Request the full written report, all radiograph images (in DICOM format if digital), and any blood work results. These become part of the horse's permanent health file and are valuable reference material for your vet going forward. Scan them into HorseBook on the spot — six months from now when your new vet asks for the purchase X-rays, you'll pull them up on your phone in seconds instead of searching through email and filing cabinets.

Documents the Seller Should Provide

Beyond the essentials above, a responsible seller should have these available:

5. Vaccination and Medical History

Request the horse's complete medical history:

• Core vaccines — rabies, tetanus, Eastern/Western encephalomyelitis, West Nile virus
• Risk-based vaccines — influenza, rhinopneumonitis (EHV), strangles, Potomac horse fever
• Deworming history and fecal egg count results
• Past injuries, surgeries, and colic episodes
• Current medications
• Chronic conditions — allergies, Cushing's (PPID), insulin resistance
• Dental float history and schedule

Red flags: Seller can't provide any records. Gaps in veterinary care. Recent vet visits just before the sale (possible masking of issues). "I don't really keep records."

6. Farrier and Dental Records

• Shoeing schedule and any corrective shoeing history
• Hoof radiographs (if they exist)
• Last dental float date

These records help your vet and farrier continue appropriate care without starting from scratch.

7. Genetic Testing Results

For Quarter Horses, Paints, and Appaloosas, genetic panel testing is increasingly important:

• HYPP (Hyperkalemic Periodic Paralysis) — descendants of the stallion Impressive
• HERDA (Hereditary Equine Regional Dermal Asthenia)
• GBED (Glycogen Branching Enzyme Deficiency)
• MH (Malignant Hyperthermia)
• PSSM (Polysaccharide Storage Myopathy)

For Paints and pinto-patterned horses:

• OLWS (Overo Lethal White Syndrome) — critical for breeding decisions

AQHA requires several of these tests on file. Results should be available through the breed registry, but ask the seller directly.

Documents the Buyer Should Prepare

8. Health Certificate (CVI)

If the horse is crossing state lines after purchase, you'll need a Certificate of Veterinary Inspection issued by a USDA-accredited vet. Plan for this in advance — your vet needs 7–10 days lead time for the Coggins results.

See our interstate transport guide for the full breakdown of what each state requires, including a state-by-state reference table.

9. Insurance

If you're insuring the horse (mortality, major medical, or surgical), your insurance company will need:

• Pre-purchase exam results
• Horse's age, breed, use, and value
• Veterinary history

Major equine insurers (Great American, Markel) typically require a PPE for mortality coverage. Start the insurance process before or at the time of purchase so coverage begins immediately.

10. Microchip Registration Transfer

If the horse is microchipped, update the registration with the microchip company to reflect your ownership. Also update any relevant databases — USEF, breed registries, etc. This is easy to forget and critically important if the horse is ever lost or stolen.

Protecting Yourself Against Liens

This section is important enough to call out on its own. Horses don't have "titles" like cars. There's no centralized system to verify that a horse is free and clear. This means buyer due diligence is your responsibility.

Things to check:

• UCC filings — Search with the Secretary of State in the seller's state for any UCC-1 financing statements filed against the seller's livestock
• Stallion/stud liens — Some states (Kentucky, Texas, others) grant automatic liens for unpaid stud fees. The foal or mare could be encumbered.
• Trainer/boarding liens — Most states grant agister's or stableman's liens for unpaid board or training. These can attach to the horse and survive a sale.
• Breed registry — Contact the registry to verify the seller is the registered owner and no leases or co-ownerships are recorded

For high-value purchases, consider having an equine attorney review the transaction. The legal fee is minor compared to discovering after the sale that someone else has a claim on your horse.

Trial Periods and Lease-to-Own

If you're doing a trial period before committing to purchase, get it in writing. A trial agreement should cover:

• Duration (typically 1–2 weeks)
• Who carries insurance during the trial
• Liability for injury — to the horse or to the rider
• Where the horse will be kept and what activities are permitted
• Veterinary authority during the trial
• Purchase price if you proceed
• Conditions for return

For lease-to-own arrangements, specify monthly payments, purchase option terms, who pays vet/farrier/board, and early termination conditions.

Don't rely on verbal agreements for trials. A horse can colic, go lame, or injure a rider during a trial period, and without a written agreement, you'll be arguing about who's responsible.

The Complete Buyer's Checklist

Here's everything in one place:

Before the sale:

• Pre-purchase examination (buyer arranges and pays)
• Current negative Coggins (seller provides)
• Vaccination and medical history (seller provides)
• Genetic testing results (if applicable)
• Verify seller's ownership — breed registry, brand inspection, UCC search

At the sale:

• Bill of sale — signed by both parties
• Registration papers — seller signs transfer section
• Payment receipt or wire confirmation
• Copies of all documents for both parties

After the sale:

• Submit registration transfer to breed association
• Obtain CVI if transporting across state lines
• Set up insurance
• Transfer microchip registration
• Establish veterinary and farrier relationships
• Scan all documents into HorseBook — bill of sale, registration, Coggins, PPE report, X-rays, all of it

That last step is the one most people skip — and six months later, they're digging through email, glove compartments, and kitchen drawers trying to find the PPE results their new vet is asking for.

HorseBook solves exactly this problem. Scan your bill of sale, registration papers, Coggins, and PPE report, and they're all organized under your horse's profile on your phone. When your vet asks for the purchase X-rays, you pull them up in seconds.

Whatever system you use, the time to organize is day one — when all the paperwork is still in a neat stack on the kitchen table, before it migrates to the black hole of the truck console.

The Bottom Line

Horse sales involve more paperwork than most buyers expect and more than most sellers prepare. The bill of sale and Coggins are the minimum. A PPE, registration transfer, and medical history are what separate a good transaction from one that ends in regret.

Take the time to get the paperwork right. It protects the buyer, the seller, and the horse.

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Brian Bickell is the founder of HorseBook and raises paint and quarter horses at Bickell Ranches in Stillwater, Oklahoma. He's bought and sold enough horses to know that paperwork now saves arguments later.