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

If you raise cattle, sheep, goats, swine, or other livestock in Hawaii, official ear tag requirements are not optional — they are a condition of legal movement, sale, and disease control compliance. Hawaii producers operate under both federal Animal Disease Traceability (ADT) rules and state-level requirements enforced by the Hawaii Department of Agriculture (HDOA). Getting both layers right protects your operation and keeps your animals moving without delays.

This guide covers every major aspect of livestock ear tag requirements in Hawaii: which animals need official tags, what the November 2024 federal RFID rule changed, how to get approved 840 tags, species-specific rules, proper application, interstate movement documentation, and recordkeeping obligations. Whether you run a small family farm on Maui or a commercial operation on the Big Island, the rules apply to you.

Which Animals Require Official Ear Tags in Hawaii

Not every animal on your property needs an official ear tag, but the categories that do are broad enough that most commercial producers will be affected. For most classes of livestock, the federal ADT rule for interstate movement requires official identification with a USDA-approved official ID device or method, and an Interstate Certificate of Veterinary Inspection (ICVI) with the shipment.

At the federal level, the following classes of cattle and bison must carry official identification before crossing state lines:

• Sexually intact beef cattle and bison 18 months of age or older
• All dairy cattle and dairy females of any age
• Male dairy cattle born after March 11, 2013
• Cattle and bison of any age used for rodeo, recreation, shows, or exhibitions
• Animals required to be officially identified under any federal disease program, including brucellosis and tuberculosis

The types of cattle required to be identified when moving interstate remain unchanged from prior rules. The list includes dairy cattle, sexually intact beef cattle 18 months or older, and rodeo and exhibition cattle. Beef feeder cattle under 18 months that are not enrolled in a disease program are generally exempt from the official ID requirement for interstate movement, unless the destination state imposes its own requirements.

For sheep and goats, Hawaii adds a significant layer on top of federal rules. Hawaii has a quarantine order in place affecting most sheep and some goats throughout the state. The quarantine order requires that before sheep and goats are allowed to move off their premises, or to change ownership, official identification and a permit must first be obtained from the HDOA.

Swine moving interstate must carry official identification under separate federal regulations at 9 CFR Part 71. Previously published regulations for interstate movement of captive cervids, swine, sheep, and goats remain in effect alongside the broader ADT framework. Contact the HDOA’s Animal Industry Division to confirm current swine ID requirements before any movement.

Pro Tip: Even if your animals never leave Hawaii, the state’s scrapie quarantine order means sheep and goats moving between premises or changing ownership still need official ID and an HDOA permit. Do not wait until sale day to sort out tags.

Federal RFID Ear Tag Rule: What Changed in November 2024

The most significant shift in livestock identification in a generation took effect on November 5, 2024. USDA APHIS amended the animal disease traceability regulations to require that eartags applied on or after a date 180 days after publication in the Federal Register of the final rule be both visually and electronically readable in order to be recognized for use as official eartags for interstate movement of cattle and bison covered under the regulations.

USDA published the final rule on May 9, 2024, making the effective date November 5, 2024. In plain terms: any official ear tag applied to a covered cow or bison on or after that date must be an RFID-capable tag — not a visual-only metal or plastic tag.

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.

Animals already tagged before the deadline are not affected. Cattle tagged with visual-only official tags prior to November 5, 2024, do not need to be retagged unless they lose their ID. If a grandfathered tag falls out or is lost, the replacement must be an approved 840 RFID tag.

These changes only apply to official ID for cattle and bison. The purpose of this rule is to improve livestock traceability. Electronic identification tags and systems provide many advantages over traditional metal tags, including faster information sharing, more accurate and precise identification of animals, and significantly faster record searches during disease outbreaks.

Important Note: The November 2024 rule does not change which cattle need official ID — it only changes what kind of tag counts as official for new applications. Sheep, goats, and swine operate under separate identification rules that were not changed by this rule.

Official 840 RFID Ear Tag Requirements in Hawaii

An official 840 RFID ear tag is not simply any tag with the number 840 printed on it. Official EID tags are USDA-approved official tags that have a visible 15-digit number starting with 840 printed on them that matches the electronic chip inside the tag, are stamped with the US shield, and say “unlawful to remove.”

The number “840” is the country code for the United States. After the 840, these tags have 12 other numbers unique to that animal. The term “RFID” refers to radio-frequency identification, indicating that these are tags that can be read with a special scanner.

To purchase official 840 tags, you must have a Premises Identification Number (PIN). A Premises ID is required to purchase USDA tags. Hawaii producers can obtain a PIN by filling out the registration form available through the HDOA’s Animal Industry Division at 99-941 Halawa Valley Street and returning it to their office, as noted on the Hawaii Animal Disease Traceability Program page.

Two main formats of 840 tags are available:

• All-in-one tags — a single tag that combines the visual number and the RFID transponder in one piece
• Matched-pair tags — a two-piece set with a visual tag and a separate RFID button tag, both printed with the same 15-digit AIN

Tags with RFID technology must have all 15 digits of the AIN printed on the tag piece that contains the transponder. The official ear tag shield and the text “Unlawful to Remove” must be printed on the other piece.

Since March 11, 2015, all official eartags applied to animals must bear an official eartag shield. The shield is the U.S. Route Shield graphic with “US” or the state postal abbreviation imprinted within it. Tags that lack this shield and were applied after March 11, 2015, are not considered official identification.

As a cost reference, RFID 840 tags cost between $2 and $5 per tag, depending on the manufacturer, tag style, and order quantity (as of early 2026). Federal funding has been available to offset costs: Congress allocated $15 million in the March 2024 Consolidated Appropriations Act specifically for EID tags. Contact the HDOA or the USDA APHIS Hawaii area office to ask about any remaining no-cost tag allocations.

Species-Specific Ear Tag Rules in Hawaii

Ear tag requirements differ significantly by species. Using the wrong tag type — or skipping a tag altogether — can block a sale, trigger a disease investigation hold, or result in fines. Here is how the rules break down for the most common livestock species in Hawaii.

Cattle and Bison

As described above, covered cattle and bison moving interstate on or after November 5, 2024, must carry an 840 RFID tag. The 2024 rule applies to sexually intact cattle at or over the age of 18 months; all female dairy cattle of any age; male dairy cattle born after March 11, 2013; and all cattle used for rodeo, showing, or exhibitions. Beef feeders under 18 months moving directly to a feedlot or slaughter are generally exempt unless a disease program applies.

Sheep

Sheep identification in Hawaii is governed by both federal scrapie regulations and the state’s quarantine order. All sheep over 18 months of age; sexually intact sheep under 18 months of age that are sold for breeding or exhibition; sheep sold unrestricted; sheep not in slaughter channels; and sheep that have lambed or are pregnant require official scrapie identification. Free official Scrapie ID tags and other supplies are provided to producers to ensure they are compliant with the State Scrapie quarantine order (QO 109-A). Contact the HDOA directly to request your free scrapie tags before any movement or sale.

Goats

Goats follow the same scrapie identification framework as sheep for most movement scenarios. Sexually intact goats not in slaughter channels of any age that do not meet the requirements to be considered low-risk commercial goats — such as those that are registered, sold for commercial milk production, or sold for other purposes — require official scrapie ID. Hawaii’s quarantine order also covers certain goats, so check with the HDOA for the most current scope of QO 109-A before moving any goats off your premises.

Swine

The ADT Rule references existing regulations on transporting all swine, including pet swine, and there are no changes in the requirements at 9 CFR Part 71.19 for interstate movement of these animals. Swine moving interstate must carry a Premises Identification Number tag or other approved official ID. APHIS is offering no-cost radio frequency identification (RFID) eartags to eligible swine producers — contact the USDA APHIS Animal Disease Traceability office to check availability for Hawaii producers.

Equine

In addition to the requirements established by the ADT Rule, equines moving commercially to slaughter must be accompanied by documentation in accordance with 9 CFR Part 88, and equine infectious anemia reactors moving interstate must be accompanied by documentation as required by 9 CFR Part 75. For most non-slaughter equine movement from Hawaii, an ICVI is the primary requirement, but confirm current Hawaii-specific entry requirements with the HDOA before shipping.

Species	Official ID Type Required	Key Trigger	Hawaii-Specific Note
Cattle / Bison	840 RFID tag (tags applied after Nov. 5, 2024)	Interstate movement, brucellosis/TB programs	Grandfathered visual tags remain valid if applied before Nov. 5, 2024
Sheep	Official scrapie tag (flock ID or 840 AIN)	Any movement off premises or change of ownership	State quarantine order QO 109-A applies; free tags from HDOA
Goats	Official scrapie tag	Sexually intact, not low-risk commercial	State quarantine order may apply; verify with HDOA
Swine	PIN tag or approved official ID	Interstate movement	No-cost RFID tags may be available through APHIS
Equine	Official ID + ICVI	Interstate movement; slaughter channels	Confirm HDOA import requirements for destination

Where to Get Official Ear Tags in Hawaii

Sourcing the right tags before you need them is one of the most practical steps you can take. Running out of tags on sale day — or ordering the wrong type — causes real delays. You have several options as a Hawaii producer.

USDA-Approved Tag Manufacturers. Three major manufacturers produce approved 840 tags: Allflex (Dallas, TX), Datamars (Temple, TX), and Y-Tex (Cody, WY). Tags are available through veterinary supply distributors, farm supply stores, and directly from manufacturers. You will need your Premises Identification Number at the time of order — the manufacturer records it alongside your tag numbers to maintain the traceability chain.

HDOA Animal Industry Division. For sheep and goat scrapie tags, the HDOA provides free official ID supplies. Free official Scrapie ID tags and other supplies are provided to producers to ensure they are compliant with the State Scrapie quarantine order. Reach the Animal Industry Division at their Halawa Valley Street office or through the HDOA Scrapie program page to request tags.

Accredited Veterinarians. Producers can purchase tags from approved manufacturers directly or check with their veterinarian to see if they have a supply of RFID tags. Some accredited veterinarians in Hawaii keep a stock of 840 RFID tags and can apply brucellosis vaccination tags (orange OCV button tags) at the time of vaccination.

No-Cost Federal Allocations. Many state veterinarian offices distribute free 840 RFID tags to producers, but supply has been uneven. Contact your state veterinarian’s office to check availability. In Hawaii, that means contacting the HDOA’s Animal Industry Division or the USDA APHIS Hawaii area office to ask whether a current allocation is available.

Pro Tip: Order tags well in advance. It may take several days for your tag order to be received, processed, shipped, and delivered. For Hawaii, add extra lead time for shipping across the Pacific. Running out of tags the week before a sale is a common and avoidable problem.

For producers on neighboring islands, you can also check with local farm supply cooperatives or contact the HDOA district offices. The Hawaii fishing license requirements page on this site is another resource that shows how HDOA administers multiple licensing and compliance programs — the same agency handles your premises registration.

How and When to Apply Ear Tags in Hawaii

Proper tag placement is not just about compliance — it also affects tag retention and readability. A poorly placed tag is more likely to be lost or torn out, which triggers a retagging obligation and creates a gap in your records.

Placement location. USDA prefers producers apply ear tags in the left ear, leaving the right ear for official use. The right ear is reserved for brucellosis vaccination tags applied by your herd veterinarian. If you apply your own 840 management or official tags, use the left ear as a default.

Placement position. 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. This position provides the best balance of retention and readability, keeping the tag away from the ear’s outer edge where tearing is most likely.

Timing. Official tags must be applied before an animal moves interstate or before it changes ownership in circumstances that require official ID. For cattle enrolled in brucellosis vaccination programs, the orange OCV button tag is applied by the accredited veterinarian at the time of vaccination — you cannot apply this tag yourself. For routine 840 RFID tags, you can apply them on-farm as long as you record the tag number, your PIN, and the date of application.

Two-piece tag sets. When using a matched-pair tag set, keep the visual and RFID components together until the moment of application. Matched-pair livestock tags are sets that include a visual tag and an electronic ID tag. What makes them “matched” is that the EID number is printed on both tags. This helps in the event that one tag is lost from the animal’s ear, since there is still another form of identification.

Replacement tags. If an animal loses its official tag, you must retag it before it moves off your premises or changes ownership. The replacement tag must be an 840 RFID tag (for cattle and bison) or the appropriate species-specific official tag. Record the original tag number, the replacement tag number, the animal’s description, and the date of retagging in your herd records.

Ear Tag Requirements for Interstate Movement in Hawaii

Moving livestock out of Hawaii is a more complex process than moving animals between mainland states because all shipments require ocean or air transport, which adds biosecurity checkpoints on both ends. The federal ADT framework still applies, but Hawaii’s island geography creates additional practical steps.

For livestock being moved interstate, the ADT rule includes requirements for official identification of animals and documentation, such as an Interstate Certificate of Veterinary Inspection (ICVI). The ICVI must be issued by an accredited veterinarian and must list each animal’s official ID number. When official ID is required for interstate movement, animals must be officially identified before the issue of an ICVI, and the animal identification must appear on the ICVI.

For cattle and bison, the 840 RFID tag number must appear on the ICVI. The Animal Disease Traceability section of 9 CFR Part 86 dictates that an official ID number must be listed on all documentation for interstate movement of non-exempt classes of cattle and bison.

Some states may have additional import requirements, and it is important for the accredited veterinarian to comply with import rules of the states of destination. If you are shipping cattle to California, for example, California has its own entry requirements that may go beyond the federal minimum. Always verify the destination state’s current requirements before finalizing your shipment.

For sheep and goats leaving Hawaii, the HDOA’s scrapie quarantine order adds a permit requirement on top of the federal ICVI. You must obtain both the official scrapie ID and the HDOA movement permit before the animals can legally leave your premises — not just before they board a vessel or aircraft.

Producers moving livestock between Hawaiian islands should also contact the HDOA to confirm whether intrastate movement triggers any of the same permit or ID requirements as interstate movement under state law. Hawaii’s unique biosecurity posture means intrastate rules can be stricter than those in mainland states.

If you transport livestock as part of your operation, reviewing livestock trailer requirements in Oregon, Idaho, or other mainland destination states can help you prepare for the full compliance picture once your animals arrive on the continent.

Important Note: Hawaii’s biosecurity laws are among the strictest in the United States. Animals arriving in Hawaii from the mainland face rigorous inspection and quarantine requirements. If you are importing livestock into Hawaii rather than exporting, contact the HDOA Plant and Animal Quarantine Branch well before your planned arrival date.

Recordkeeping Requirements for Ear-Tagged Animals in Hawaii

Tagging an animal is only half the compliance equation. You must also maintain records that connect each tag number to a specific animal, a premises, and a transaction. During a disease investigation, these records are what allow officials to trace exposure pathways quickly — and gaps in your records can extend the investigation to your entire herd.

USDA APHIS also clarified certain record retention and record access requirements as part of the November 2024 rule changes. Here is what you need to maintain as a Hawaii producer:

1. Tag distribution records. When you receive a batch of 840 RFID tags, record the tag numbers received, the date received, and your PIN. Once the Premises ID number of the tag purchaser is validated, the Premises ID is recorded in a database with the tag numbers that are being purchased — this is how the traceability component of the federal tags becomes effective.
2. Application records. For each tag applied, record the tag number, the animal’s description (species, sex, approximate age, breed, and any distinguishing marks), the date of application, and the name of the person who applied the tag.
3. Movement records. Keep copies of all ICVIs and movement permits associated with your animals. Tag information is recorded when tags are applied, at selling points, when official movements are recorded, and when a disease investigation is being conducted.
4. Replacement tag records. If an animal loses a tag and is retagged, record both the original tag number (if known) and the new tag number, along with the date and reason for retagging.
5. Disposition records. When an animal is sold, slaughtered, or dies, record the date, the official tag number, and the disposition method or buyer’s identity.

Federal record retention requirements are 15 years for cattle, bison, sheep, goats, and captive cervids, 3 years for swine, and 25 years for equine. These are minimum federal retention periods — Hawaii may impose its own requirements, so store records for at least the federal minimum and ask the HDOA whether state law requires longer retention for any species.

Digital recordkeeping is acceptable and often more practical for Hawaii producers who deal with multiple islands or remote pastures. Several livestock management software platforms can store tag numbers, movement history, and veterinary records in one place. Whatever system you use, make sure records are backed up and accessible to an accredited veterinarian or HDOA official during an inspection or disease investigation.

Producers raising multiple species should maintain separate records by species, since retention periods and required data fields differ. Keeping cattle records mixed with sheep records creates confusion during audits and slows down disease response.

For a broader look at how livestock regulations work across the country — including trailer and transport requirements that often accompany ear tag compliance — see resources like livestock trailer requirements in Florida, Georgia, Missouri, and Wisconsin. You can also review hunting license requirements in Hawaii for additional context on how the HDOA manages animal-related permitting across the state.

Staying current with Hawaii’s ear tag requirements means checking in with the HDOA Animal Industry Division at least once a year. Rules at both the federal and state level can change — and in Hawaii’s biosecurity-focused regulatory environment, staying ahead of those changes protects your herd, your neighbors’ herds, and Hawaii’s agricultural economy as a whole.