In its simplest form to lease a horse is to rent it from the owner. Specific details that you may want to include in the Horse Lease Agreement are: A description of your horse and its estimated value Contact information for the renter How payment will be made What the start and end dates are Who will be financially responsible for veterinary care Whether or not there are any restrictions on using the horse for shows or other special events As expected, the Horse Lease will also include language related to overdue fees, liability, and governing law. Further alterations are possible, as needed. Leasing "half of a horse," means that two separate individuals are splitting the horse's care expenses and riding time. Costs that will be shared can include: board, feed, veterinary bills, etc. Both parties to the agreement will determine a schedule for access to the horse. The agreement can be beneficial for the horse if you are unable to ride it extensively. This agreement is also sometimes referred to as "shared-boarding."