Livestock Ear Tag Requirements in Oregon: What Every Producer Needs to Know

If you move livestock across state lines from Oregon — or bring animals into the state — ear tag compliance is not optional. The Oregon Department of Agriculture (ODA) enforces official identification requirements that align with federal USDA Animal Disease Traceability (ADT) standards, and a major federal rule change that took effect in November 2024 raised the bar for cattle and bison producers nationwide.

Whether you raise cattle, sheep, goats, swine, or horses, understanding which animals need official ear tags, what type qualifies as official, and how to document everything correctly will save you from costly delays at the state line and potential fines. This guide walks you through every layer of Oregon’s livestock ear tag requirements so you can move your animals with confidence.

Which Animals Require Official Ear Tags in Oregon

Official identification refers to devices approved by the USDA that meet various standards for identifying animals moving across state lines. Only identification that meets USDA standards counts as official identification, and the need for official ID depends on several factors including species, age, use, and final destination.

In Oregon, the following livestock categories generally require official identification for interstate movement or certain intrastate purposes:

• Cattle and bison — sexually intact animals 18 months of age or older, all dairy cattle, and cattle or bison used for rodeo or recreational events
• Sheep and goats — all sexually intact animals of any age leaving the flock of origin that are not in slaughter channels, plus all sheep over 18 months in slaughter channels
• Swine — all swine moving interstate must be officially identified unless moving as a group under specific exemptions
• Equines — all horses and other equids moving across state lines unless covered by a narrow exemption

All sexually intact sheep and goats of any age leaving the flock of origin which are not in slaughter channels, and all sheep over 18 months of age in slaughter channels, must have official identification prior to leaving the farm of origin for intrastate or interstate movement for any purpose. This is one of the broadest requirements in Oregon and catches many small-flock producers off guard.

All equines are required to have official identification for movement across state lines unless they are used as the mode of transportation (horseback, horse and buggy) for travel to another location and then returned directly to the original location, or they are moved from the farm or stable for veterinary medical examination or treatment and returned to the same location without change in ownership.

Pro Tip: If you are unsure whether a specific animal or movement scenario requires official ID, contact the ODA Animal Health Division before you load the trailer. Addressing questions before movement is far easier than dealing with a compliance issue at a state line checkpoint.

Federal RFID Ear Tag Rule: What Changed in November 2024

The most significant shift to livestock identification rules in a generation took effect on November 5, 2024. USDA APHIS amended the animal disease traceability regulations to require that ear tags applied on or after that date be both visually and electronically readable in order to be recognized as official ear tags for interstate movement of cattle and bison covered under the regulations. The agency also clarified certain record retention and record access requirements and revised some requirements pertaining to slaughter cattle.

USDA published the final rule on May 9, 2024, making the effective date November 5, 2024. The rule requires newly applied cattle and bison official ID tags to have both a visual and electronic component. Currently, the only official tags that meet these requirements are 840 RFID tags.

This requirement applies to official identification placed for any reason, including interstate movement, brucellosis vaccination, and tuberculosis testing. Cattle tagged with visual-only official tags prior to November 5, 2024, do not need to be retagged unless they lose their ID.

Several categories are exempt from the EID requirement, including beef feeder cattle under 18 months unless the destination state or a disease program requires it, and animals already tagged with official visual-only tags before November 5, 2024, which are grandfathered for the life of the animal with no retagging required.

Important Note: The November 2024 RFID mandate applies specifically to cattle and bison. Sheep, goats, swine, and equines follow separate identification frameworks that have not changed under this rule. Do not apply cattle RFID tags to small ruminants — each species has its own approved tag types.

These changes enhance the ability of Tribal, State, and Federal officials, private veterinarians, and livestock producers to quickly respond to high-impact diseases currently existing in the United States, as well as foreign animal diseases that threaten the viability of the U.S. cattle and bison industries. For Oregon producers, this means that any new official tag applied to a cow or bison on or after November 5, 2024, must include an RFID component — no exceptions.

Official 840 RFID Ear Tag Requirements in Oregon

The fifteen-digit number on an official tag must begin with 840 to ensure it counts as official identification. A Premises Identification Number (PIN) must be included on the order form that matches the farm or ranch’s address.

Tag companies may submit specific products — encoded with a 15-digit official ID number beginning with “840,” the ISO country code for the United States — to APHIS for approval, and the agency maintains a list of approved tag providers. You must order only from that approved list to ensure your tags qualify as official identification.

Here is a summary of what makes an 840 tag officially compliant:

Tag Feature	Requirement
Number format	15 digits beginning with “840”
Electronic component	RFID transponder (HDX or FDX technology)
Visual component	15-digit AIN printed on tag, must be readable
Shield marking	Official USDA shield displayed on tag
Tamper notice	“Unlawful to Remove” printed on tag
Ordering requirement	Valid Premises Identification Number (PIN) required
Application date rule	Tags applied after Nov. 5, 2024 must be RFID-capable

HDX tags utilize half-duplex technology that can be read from a greater distance and are beneficial for automated systems, while FDX tags utilize full-duplex technology and are a cost-effective option. Either technology meets federal standards for official identification in Oregon.

Premises Identification Numbers may be obtained by completing the premises registration application and returning it to the Oregon Department of Agriculture. A producer does not need a Premises Identification Number if an accredited veterinarian applies RFID/EID ear tags.

Species-Specific Ear Tag Rules in Oregon

Each livestock species has its own official identification framework. Oregon follows federal minimums under 9 CFR Part 86 but also layers in state-level requirements through Oregon Administrative Rules (OAR). Here is how the rules break down by species.

Cattle and Bison

The federal rule applies to specific categories of cattle and bison crossing state lines: sexually intact beef cattle and bison 18 months of age or older. It also covers all dairy cattle regardless of age, and animals required to be officially identified under any federal disease program such as brucellosis or tuberculosis testing.

Previously, official ID could be a simple visual metal ear tag, a brand registered with a state, or a tattoo from an approved program. Those options remain valid for some purposes, but for interstate movement of covered animals, an 840 RFID tag is now the standard. Oregon also recognizes official brands accompanied by a brand inspection certificate as a supplemental means of identification for cattle — see ODA’s brand inspection requirements in Oregon for details on when a brand certificate is needed alongside your ear tag.

Sheep and Goats

Sheep and goats moved interstate must be officially identified prior to the interstate movement unless they are exempt from official identification requirements under 9 CFR Part 79, or are officially identified after the interstate movement as provided in 9 CFR Part 79.

Oregon’s state rules go further than the federal baseline. All sexually intact sheep and goats of any age leaving the flock of origin which are not in slaughter channels, and all sheep over 18 months of age in slaughter channels, must have official identification prior to leaving the farm of origin for intrastate or interstate movement for any purpose. All sheep and goats for exhibition must bear official individual identification in accordance with 9 CFR Part 79.

For sheep and goats, approved official ID includes USDA-issued flock tags, 840 RFID tags, and approved scrapie program tags. The Scrapie Flock Certification Program is a mandatory USDA identification program for sheep and goats. Producers in the voluntary SFCP program may have tags imprinted with SFCP.

Swine

Swine moving interstate must be officially identified in accordance with § 71.19 of the CFR. For interstate movements, all swine must be individually identified with official identification unless the swine are kept as a group. The CFR Part 71.19 explains the requirements for group shipment of swine. Swine moving within a production system do not need to be individually identified if there is a swine production health plan agreement in place.

Approved official identification for swine includes ear tags, tattoos, and ear notches depending on the movement purpose. USDA APHIS announced a new initiative to provide no-cost RFID ear tags for swine beginning fall 2025, available for sow and exhibition swine producers. Oregon producers should contact ODA or check USDA APHIS Animal Disease Traceability for current swine tag availability.

Horses and Equines

Horses and other equids moving interstate must be officially identified prior to the interstate movement, using an official identification device or method, unless they are used as the mode of transportation for travel to another location and then return directly to the original location. Official identification for equines includes a description-based record, microchip, or a brand with a brand certificate. Ear tags are not the primary identification method for horses in Oregon or under federal rules.

Where to Get Official Ear Tags in Oregon

Oregon livestock producers may order RFID/EID tags directly from tag manufacturers. You do not need to go through ODA to purchase tags, but you must have your PIN ready before placing an order.

The three major manufacturers that produce the bulk of approved 840 tags in the United States are Allflex (Dallas, TX), Datamars (Temple, TX), and Y-Tex (Cody, WY). Tags are also available through veterinary supply distributors, farm supply stores, and directly from manufacturers.

For no-cost tags, Oregon producers have two main avenues:

1. ODA distribution — The Oregon Department of Agriculture receives allocations of free 840 RFID tags through federal ADT funding. Contact ODA’s Animal Health Division to check current availability, as supply varies by year.
2. Accredited veterinarian — Your accredited vet can apply official tags and does not require you to have a PIN. This is a practical option for producers who tag infrequently or need tags urgently.

RFID 840 tags cost between $2 and $5 per tag, depending on the manufacturer, tag style, and order quantity. Congress allocated $15 million in the March 2024 Consolidated Appropriations Act specifically for EID tags, and many state veterinarian offices distribute free 840 RFID tags to producers, though supply has been uneven. Contact ODA’s RFID/EID Tags for Producers page to check the current status of no-cost tag availability in Oregon.

If you plan to redistribute official 840 tags to other producers, you must become an Animal Identification Number (AIN) Device Manager. Only AIN Device Managers can redistribute official 840 EID tags. Visit www.aphis.usda.gov/traceability and refer to the “How to Become an AIN Device Manager” section to learn more.

Pro Tip: Order tags well in advance of any planned movement or sale. Supply shortages have affected multiple states, and waiting until the week before a sale to tag animals creates unnecessary risk of non-compliance.

How and When to Apply Ear Tags in Oregon

Proper placement and timing matter as much as having the right tag. A tag applied incorrectly can fall out, rendering the animal unidentified at the state line.

All ear tags should be placed two-thirds of the way from the outside edge of the ear, and one-third of the way from the head between the middle two cartilage ribs. USDA prefers producers apply ear tags in the left ear, leaving the right ear for official use. For brucellosis vaccination tags specifically, the new official brucellosis identification is an orange RFID button, placed in the right ear by the herd veterinarian at the time of vaccination.

When you apply a tag, follow these steps to ensure compliance:

1. Confirm your PIN is active — Your Premises Identification Number must be valid and on file with ODA before you can place a tag order.
2. Inspect the tag before application — Verify the 15-digit number begins with 840, the USDA shield is visible, and “Unlawful to Remove” is printed on the tag.
3. Clean the application site — Wipe the ear with a clean cloth to remove debris and reduce infection risk.
4. Use the correct applicator — Each tag manufacturer provides a species- and model-specific applicator. Using the wrong one can damage the tag or the ear.
5. Check retention before release — Confirm the tag is firmly seated before the animal leaves the chute.
6. Record the tag number immediately — Write down the 15-digit AIN and the date of application in your herd records before moving on to the next animal.

If a visual tag and an EID button are placed in the ear, the EID button should be placed in the standard location with the visual tag a little closer to the outside of the ear. The female (thicker) portion of the tag should always be to the inside of the ear.

Tag as early in the animal’s life as practical — at processing, weaning, or preconditioning — rather than waiting until the day before a sale or shipment. This gives you time to address any tags that fail to seat properly.

Ear Tag Requirements for Interstate Movement in Oregon

Moving livestock out of Oregon or bringing animals in both trigger identification and documentation requirements. Official ear tags are only part of the picture — most interstate movements also require a Certificate of Veterinary Inspection (CVI).

In nearly all cases, animals traveling into Oregon will need at least a Certificate of Veterinary Inspection, also called a CVI or health certificate. Only accredited veterinarians can create and issue a CVI for travel into or out of Oregon.

All livestock imported into Oregon must meet the USDA Animal Disease Traceability standards as specified by 9 CFR Part 86. For animals that require official identification to move across state lines, the ID numbers must be recorded on the certificate of veterinary inspection that accompanies the animal, or they may be typed onto an attached list.

Key points for Oregon interstate movement:

• Moving cattle out of Oregon — Official 840 RFID tag required for covered animals, plus a CVI and brand inspection certificate for cattle. Check destination state requirements, as some states impose stricter rules than the federal minimum. Review Oregon livestock trailer requirements to ensure your transport is also compliant.
• Moving cattle into Oregon — Animals must be officially identified and accompanied by a valid CVI. An electronic CVI from a NASAHO-approved system eliminates the need for a separate ODA import permit.
• Neighboring states — If you move animals to Idaho, Nevada, or other nearby states, each destination has its own import rules. See our guides on livestock trailer requirements in Idaho and livestock trailer requirements in Nevada for transport-specific details.
• Slaughter-only animals — Cattle moving directly to a USDA-recognized slaughtering establishment may move on a USDA backtag instead of an official ear tag, provided they are harvested within the required timeframe.
• Exhibition animals — All sheep and goats for exhibition must bear official individual identification in accordance with 9 CFR Part 79. Cattle shown at fairs or rodeos also require official ID.

If you are moving animals out of Oregon, contact the destination state to get their requirements for each animal species. You can also find import requirements for most animal species on Interstate Livestock’s webpage. Also review Oregon’s livestock biosecurity requirements to understand the health certificate and disease testing rules that often accompany ear tag requirements.

If you regularly move animals to other western or midwestern states, the following guides cover transport compliance in those destinations: Colorado, Wyoming, Kansas, and Oklahoma.

Recordkeeping Requirements for Ear-Tagged Animals in Oregon

Tagging an animal is only half the compliance equation. You also need to maintain records that allow state and federal officials to trace an animal back to your premises quickly in the event of a disease outbreak.

Any state, tribe, accredited veterinarian, or other person or entity who distributes official identification devices must maintain for 5 years a record of the names and addresses of anyone to whom the devices were distributed. Official identification device distribution records must be entered by the person distributing the devices into the tribal, state, federal, or other database acceptable to each government entity.

For producers who apply tags to their own animals, the core records you must keep include:

• The 15-digit AIN of each tag applied
• The date of application
• The species and description of the animal receiving the tag
• Your Premises Identification Number (PIN)
• Copies of any CVIs or interstate movement documents associated with the animal

Record retention periods differ by species. For poultry and swine, interstate movement documents must be kept for at least 2 years, and for cattle and bison, sheep and goats, cervids, and equine species, 5 years. This 5-year window applies to both the tag distribution records and the CVIs or other documentation that accompanied the animal during movement.

Records of official identification devices applied by a federally accredited veterinarian to a client animal must be kept in a readily accessible record system. If your vet applies the tags, confirm that they are recording the AINs and retaining copies — you should also keep your own duplicate records.

Key Insight: Digital recordkeeping is now the practical standard. Spreadsheets, herd management software, or even a simple database make it far easier to pull a 5-year tag history during a disease investigation than paper logs stored in a barn office. USDA’s Animal Identification Management System (AIMS) can also be used to log tag distributions.

Animal disease traceability information is housed in official federal and state databases. Those databases are not publicly available and are only accessible to federal and state government officials responsible for dealing with high-impact animal diseases. Your records feed into this system and are protected from public disclosure.

Staying current on both your tagging and recordkeeping obligations protects your herd, your market access, and your operation’s reputation. For a full picture of Oregon’s livestock compliance landscape, review the biosecurity requirements every Oregon producer should know alongside this ear tag guide.