United States Eventing Association

With the start of the 2027 competition year just around the corner, the United States Eventing Association (USEA) would like to remind members of an important rule change taking effect on Dec. 1, 2026. Beginning on that date, all horses competing at United States Equestrian Federation (USEF) licensed will be required to have a microchip for identification purposes.

Originally scheduled to take effect on Dec. 1, 2025, the microchip requirement was postponed by a USEF presidential modification, which extended the implementation date to Dec. 1, 2026. The requirement applies to horses competing at all levels of recognized eventing.

Importantly, with the addition of Starter as a USEF-recognized level beginning Dec. 1, 2026, horses competing at Starter will also be required to comply with the microchip rule. Previously, the requirement was expected to apply to Beginner Novice through Advanced competitors.

The rule, outlined under GR1101.10 of the USEF General Rules, requires horses to have a 15-digit ISO-compliant 11784/11785 microchip implanted in the nuchal ligament of the neck.

Why Are Microchips Required?

The USEF approved the microchipping requirement in 2023 as part of its ongoing efforts to improve equine health, safety, and identification at competitions.

Microchips provide a reliable method of identifying individual horses, particularly in situations involving infectious disease outbreaks or natural disasters. In the event of a disease outbreak, state and federal animal health officials can use microchip readers to identify potentially exposed horses, helping facilitate appropriate isolation, quarantine, and disease management procedures.

Unlike traditional identification methods, a microchip provides each horse with a permanent identification number that can be linked to its official records.

What Do Horse Owners Need to Do?

Horse owners should begin preparing for the Dec. 1 deadline by confirming that their horses have compliant microchips and that their microchip numbers have been submitted to USEF.

Horses that already have a readable, ISO-compliant microchip do not need to have another implanted. Owners who are unsure whether their horse has a microchip or whether an existing chip meets the requirements should consult their veterinarian.

For horses that have not yet been microchipped, owners should contact their veterinarian to arrange implantation before their first competition under the new rule.

Once a horse has been microchipped, its identification number must be reported to USEF and associated with the horse's official record. Microchip numbers can be submitted through the USEF horse recording process or added to an existing horse record through USEF's online microchip update system. Alternatively, members who are unfamiliar with the USEF system can add their horse's microchip number directly to their USEA registration. The USEA will then share this information with USEF on behalf of its members.

Competition organizers will be responsible for verifying that horses entered in their competitions have compliant microchip numbers on file with USEF. While routine scanning of every horse is not required, horses may be scanned by authorized personnel for identification purposes.

Prepare Now for the 2027 Competition Year

With the implementation date approaching, the USEA encourages all members, including those competing at the Starter level, to take the necessary steps to ensure their horses are compliant before Dec. 1, 2026.

For additional information about microchip requirements, implantation, and submitting microchip numbers, visit the USEF Microchip FAQ.