UPDATE to Microchip Requirements
Please read this important statement affecting the remainder of the 2026 competition year.
FOR EVERYONE ENTRING USEF LICENSED OR ENDORSED COMPETITIONS: GR 1101.10
MICROCHIPS: THIS IS WHAT YOU NEED TO KNOW
USEF competition horses must have a ISO compliant (11784/11785) microchip embedded in their nuchal ligament, and the number recorded by USEF, by December 1st, 2025. It is the owner/riders responsibility to be sure this has been done.
If you are certain your horse(s) are microchipped, confirm that the number is recorded on the USEF website.
- Sign in to your account www.usef.org
- Click (upper right) account icon
- Click my dashboard icon
- Scroll down to your horses
- Click each horse
- Confirm that there is a 15-digit microchip number in the horse information section. No letters.
If your horse has been microchipped but you are unsure if it is ISO compliant:
- The number should have 15 digits, no letters
- The radio frequency should be 134.2 kHz. (From the packaging or your vet might know.)
- Biothermal chips are compliant
- Most “breed chips” are compliant; check for 15 digits and the kHz.
- Be sure this is recorded on the USEF website (as described above).
If your horse has not been microchipped, you can arrange for this by your local veterinarian.
- The cost is modest; most of your fee will be the vet visit cost.
- Placement does not require sedation; the insertion needle is about the size of a vaccination needle, and any initial swelling is minor. There is no “downtime.”
- Follow the steps above to record the number on the USEF website.
Questions?
Cflippa16@gmail.com
Please click button above for a printable PDF of this information.



