Livestock Ear Tag Requirements in South Carolina: What Every Producer Needs to Know
June 29, 2026
If you raise cattle, sheep, goats, or swine in South Carolina, federal and state ear tag rules directly affect how you move, sell, and document your animals. Getting identification wrong can mean animals turned away at state lines, fines, or loss of selling privileges at auction — none of which any producer wants to deal with at the gate.
South Carolina’s livestock identification program is administered through Clemson University’s Livestock Poultry Health division, which acts as the state’s animal health authority under a cooperative agreement with USDA’s Animal and Plant Health Inspection Service (APHIS). Understanding both the federal baseline and South Carolina’s specific requirements puts you in a much stronger position — whether you’re moving animals across county lines or shipping a load out of state.
Which Animals Require Official Ear Tags in South Carolina
Not every animal on your farm needs a USDA official ear tag, but the categories that do are clearly defined by federal regulation and enforced at state borders and livestock markets. The key trigger is whether an animal is moving in commerce or crossing a state line.
The federal rule covers all sexually intact cattle and bison 18 months of age or older, all dairy cattle, cattle and bison of any age used for rodeo or recreation events, and cattle or bison of any age used for shows or exhibition. These animals must carry official identification any time they move in interstate commerce.
The species covered under the federal animal disease traceability rule include cattle and bison, sheep and goats, swine, horses and other equines, captive cervids such as deer and elk, and poultry. When these animals move interstate, unless otherwise exempt, they must be officially identified and accompanied by an interstate certificate of veterinary inspection (ICVI) or other movement document agreed upon by both the sending and receiving states.
For sheep and goats, the scrapie identification program has its own rules. All sheep and goats must have official ID when moving off their premises of origin, with limited exceptions — including sexually intact sheep and goats under 18 months of age in slaughter channels, and sheep and goats of any age shipped directly to a slaughter establishment or a federally approved market that has agreed to act as an agent for the owner to apply official ID when all the animals in a section of a truck are from the same flock of origin.
Swine moving in South Carolina also require identification. USDA official ear tags for swine must be imprinted with the official US Shield and a nationally unique official animal identification number, and acceptable tag types include National Uniform Eartagging System (NUES) metal ear tags and official Animal Identification Number (AIN) or RFID tags. USDA backtags are allowed for swine moving directly to slaughter but are not acceptable for exhibition animals.
Pro Tip: If you’re unsure whether a specific animal or movement scenario requires official ID in South Carolina, contact Clemson Livestock Poultry Health directly before moving the animal — not after. Requirements can differ based on destination, age, sex, and intended use.
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. A USDA rule requiring newly applied cattle and bison official ID tags to have both a visual and electronic component went into effect on that date, and as of the rule’s implementation, the only official tags that meet these requirements are 840 RFID tags.
USDA amended the animal disease traceability regulations to require that ear tags applied on or after the effective date be both visually and electronically readable in order to be recognized for use as official ear tags for interstate movement of cattle and bison covered under the regulations. The rule was published by USDA on May 9, 2024, making the effective date November 5, 2024.
It is important to understand what the rule does — and does not — change. The rule changes what counts as official ID, not when official ID is needed. The rules regarding which animals need to be identified and when are not changing.
Cattle tagged with visual-only official tags prior to November 5, 2024, do not need to be retagged unless they lose their ID. Cattle tagged with a metal tag or a plastic, non-RFID official identification tag prior to that date are grandfathered in. This requirement applies to official identification placed for any reason, including interstate movement, brucellosis vaccination, and tuberculosis testing.
The rule has faced legal challenges. The New Civil Liberties Alliance asked a federal court to direct USDA APHIS to vacate the rule requiring electronic identification ear tags for cattle and bison that cross state lines, citing APHIS’s decision to phase out visual-only metal tags and other lower-cost methods. As of March 2026, the court denied USDA’s motion to dismiss the suit’s claims based on lack of standing and partially denied its request to strike portions of the claims, allowing the case to proceed. South Carolina producers should monitor this litigation, but the rule remains in effect.
Important Note: Because the federal EID rule is subject to ongoing litigation as of June 2026, producers should check with Clemson Livestock Poultry Health or USDA APHIS for any updates before making large tag purchases or operational changes based solely on the rule’s current text.
Official 840 RFID Ear Tag Requirements in South Carolina
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.” These tags are the only form of official identification accepted for cattle and bison tagged after November 5, 2024.
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, meaning those tags can be read with a special scanner — scanners that are becoming more common because they make it easier and more efficient to manage, track, and identify animals.
Before you can order 840 tags, you need a Premises Identification Number (PIN). A national premises identification number is a unique number permanently assigned to a physical address where livestock animals are located, and all owner and premises information collected is stored and maintained in a federal database. In South Carolina, you obtain your PIN through Clemson Livestock Poultry Health. You can apply for a Premises ID through your state’s animal health department.
Since March 11, 2015, all official ear tags applied to animals must bear an official ear tag shield. APHIS VS authorizes tag manufacturers to imprint the official ear tag shield on approved tags. Tags that lack this shield are not considered official, regardless of the number format.
Electronic identification devices (EIDs) with official “840” numbers can offer significant advantages to most operations and are encouraged by Clemson’s animal health program. To purchase an AIN device, contact one of the approved tag companies or a local tag supplier. These companies offer a wider range of colors, styles, and devices.
| Tag Feature | Requirement |
|---|---|
| Number prefix | 840 (U.S. country code) |
| Total digits | 15 (840 + 12 unique digits) |
| Official shield | Required on all tags applied after March 11, 2015 |
| Electronic readability | Required for cattle/bison tagged after November 5, 2024 |
| Premises ID (PIN) | Required to order tags |
| Tamper evidence | “Unlawful to Remove” imprint required |
Species-Specific Ear Tag Rules in South Carolina
Each livestock species has its own identification framework. Applying the wrong tag type — or skipping identification altogether — can block an animal from moving legally, even within the state.
Cattle and Bison: As covered above, cattle and bison tagged after November 5, 2024, must carry 840 RFID tags to be considered officially identified. 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 feeder cattle under 18 months moving directly to a feedlot or slaughter are generally exempt unless the destination state requires otherwise.
Sheep: Sheep fall under the National Scrapie Eradication Program. 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. South Carolina producers can order scrapie tags through the Clemson Livestock Poultry Health tagging page, which includes a direct link for ordering sheep and goat scrapie tags in the state.
Goats: 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 identification. The Code of Federal Regulations part 79.2 and the National Scrapie Eradication Program Standards allow sheep and goats to be officially identified with registry tattoos for movement in interstate commerce with some exceptions.
Swine: Swine moving in South Carolina for purposes other than direct slaughter require official ear tags. The key components required for federally approved swine ear tags include a unique number for each animal, tamper-proof and permanently numbered construction, and a US shield emblem. Premises Identification Number (PIN) tags are also used for slaughter swine. Note that NUES metal tags remain acceptable for swine — the November 2024 RFID mandate applies only to cattle and bison.
Pro Tip: Do not use cattle RFID tags on sheep or goats. These species have their own approved RFID tag formats, and using the wrong tag type can result in an animal being considered unidentified at inspection.
Where to Get Official Ear Tags in South Carolina
South Carolina producers have several options for obtaining official ear tags, depending on species, tag type, and whether cost-offset programs apply to your operation.
For cattle, 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. RFID 840 tags cost between $2 and $5 per tag, depending on the manufacturer, tag style, and order quantity.
Federal funding has been available to offset tag costs. 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 Clemson Livestock Poultry Health to check whether no-cost tags are currently available in South Carolina.
For sheep and goat scrapie tags, to request official sheep and goat tags, a flock or premises ID, or both, call 1-866-USDA-Tag (866-873-2824). The National Scrapie Eradication Program provides up to 100 plastic flock ID tags free of charge to first-time participants in the sheep and goat identification program until available funds are expended. Additional tags beyond that initial allotment can be purchased from approved manufacturers.
- Clemson Livestock Poultry Health (state tagging authority for SC)
- Allflex USA — approved 840 RFID tag manufacturer
- Datamars — approved 840 RFID tag manufacturer
- Y-Tex — approved 840 RFID tag manufacturer
- Local veterinarians (may carry a supply of official tags)
- Farm supply and livestock supply distributors carrying USDA-approved products
- USDA APHIS 1-866-USDA-Tag for sheep and goat scrapie tags
When purchasing 840 tags, you will be required to submit your Premises ID number, and the tag distributor will confirm that the Premises ID number given is accurate. Keep in mind it may take several days for your tag order to be received, processed, shipped, and delivered — order well ahead of any planned movement date.
How and When to Apply Ear Tags in South Carolina
Proper placement is just as important as having the right tag. A tag applied incorrectly can tear out, become unreadable, or fail an inspection — creating the same problem as having no tag at all.
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 such as brucellosis vaccination tags. The female (thicker) portion of the tag should always be to the inside of the ear.
If you are using both a visual tag and an EID button in the same ear, the EID button should be placed in the standard position with the visual tag a little closer to the outside of the ear. For combination all-in-one tags, all-in-one livestock tags combine an EID button tag and a visual tag and are ideal if you need the benefits of an EID tag and a visual tag but want the set to only take a spot in one ear.
Timing matters as well. Tag animals before they leave your premises for any purpose that requires official identification — do not wait until they arrive at a market or loading facility. The person responsible for a South Carolina tagging site agrees to administer the tagging of livestock at their location in accordance with the responsibilities outlined in the state’s tagging site agreement. If you operate a tagging site, you must comply with that agreement’s procedures for every animal processed.
For brucellosis vaccination 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. This is separate from your standard 840 management or movement tag. If you are moving cattle that have been vaccinated, confirm both tags are present and legible before loading.
If you are transporting livestock in South Carolina, review the transporting livestock laws in South Carolina to ensure your movement documents, vehicle requirements, and identification all line up before hitting the road.
Ear Tag Requirements for Interstate Movement in South Carolina
Moving animals out of South Carolina — or receiving animals from another state — triggers a specific set of federal and state requirements that go beyond simply having a tag in the animal’s ear.
When covered animals move interstate, unless otherwise exempt, they must be officially identified and accompanied by an interstate certificate of veterinary inspection (ICVI) or other movement document agreed upon by both the sending and receiving states. South Carolina requires an accredited veterinarian to issue the ICVI, and that certificate must list each animal’s official identification number.
For cattle and bison, the tag must be an 840 RFID tag if it was applied after November 5, 2024. Those options remain valid for some purposes, but for interstate movement of covered animals, an 840 RFID tag is now the standard. Having an official ID allows for interstate travel, along with disease traceability, data capturing, and sharing.
For sheep and goats moving interstate, the Code of Federal Regulations part 79.2 and the National Scrapie Eradication Program Standards allow sheep and goats to be officially identified with registry tattoos for movement in interstate commerce with some exceptions. However, tattoos cannot be the sole form of identification for animals moving to slaughter or through a livestock market. Individual animal identification numbers, including the official ear tag number, breed association registration tattoo or brand numbers, and breed association registration number, must be recorded on the ICVI.
Before shipping horses out of state, South Carolina also requires a current Coggins test (EIA test) in addition to a health certificate. While horses are not subject to the 840 RFID ear tag rule, they have their own identification and health documentation requirements for interstate movement.
Destination state requirements can be stricter than federal minimums. Always verify the receiving state’s import rules before loading. For a listing of all states’ livestock import requirements, visit www.InterstateLivestock.com.
Important Note: The receiving state sets the rules for what it will accept. South Carolina’s export requirements tell you what you need to leave; the destination state’s import requirements tell you what you need to arrive. Both must be met simultaneously.
Recordkeeping Requirements for Ear-Tagged Animals in South Carolina
Ear tags only create traceability if the records behind them are accurate and accessible. Federal regulations require producers, dealers, and markets to maintain specific documentation — and state or federal animal health officials can request those records within 48 hours.
Additional recordkeeping requirements under the 2024 rule include retrieval of official identification distribution records and certificate of veterinary inspection (CVI) within 48 hours of a request made by federal or state animal health officials. This is a tightened standard from previous practice — make sure your records are organized and retrievable quickly.
For sheep and goat producers, records must be kept for five years after the animal is sold or otherwise disposed of, and producers should ideally keep records in an electronic format such as a Microsoft Excel spreadsheet. Required entries include the flock ID number of the flock of origin, the name and address of the current owner, and the name and address of the owner of the flock of origin if different.
For cattle, your records should link each animal’s 840 tag number to its premises of origin, movement history, and any health certificates issued. Once a Premises ID number is validated, it is recorded in a database with the tag numbers being purchased — this is how the traceability component of the federal tags becomes effective.
Tag distribution records are also a state responsibility. Distribution of NUES tags to producers through accredited veterinarians or state animal health officials is optional and determined by the state, and tag distribution records are maintained by the state or tribe. In South Carolina, Clemson Livestock Poultry Health maintains these records as part of the state’s cooperative agreement with USDA APHIS.
| Record Type | Retention Period | Who Keeps It |
|---|---|---|
| Sheep/goat official ID records | 5 years after disposal | Producer |
| CVI / health certificates | Available within 48 hours of request | Producer / issuing vet |
| 840 tag distribution records | Per USDA APHIS requirements | State (Clemson LPH) / tag distributor |
| Premises ID assignment records | Permanent (federal database) | USDA APHIS / state |
If you own or operate a tagging site in South Carolina, you must complete a SC Tagging Site Agreement and the person responsible for the tagging site agrees to administer the tagging of livestock at their location in accordance with the responsibilities outlined in the agreement. Keep a copy of that agreement and all related tagging logs on file.
Good recordkeeping also protects you commercially. If an animal health investigation ever traces back to your operation, clean records demonstrating proper tagging and movement history can significantly limit your exposure. Electronic identification and records for livestock movement can help safeguard animal health with rapid tracing of sick or exposed animals and a rapid response to animal diseases.
For a broader look at animal-related regulations in the Palmetto State, the rabies vaccine requirements for cats in South Carolina and the fishing license requirements in South Carolina cover other areas where state and federal rules intersect for animal owners and outdoor enthusiasts alike.
Conclusion
South Carolina livestock producers operating under the current federal framework need to act on three fronts: get a Premises ID if you don’t have one, switch to 840 RFID tags for any cattle or bison tagged after November 5, 2024, and keep records that can be produced within 48 hours on request. These are not suggestions — they are conditions of legal movement and sale.
Species rules differ, so apply the right tag to the right animal. Cattle get 840 RFID tags, sheep and goats use scrapie program tags (with 840 RFID as an encouraged upgrade), and swine have their own USDA-approved tag options. When in doubt, call Clemson Livestock Poultry Health before you move an animal, not after a problem arises. Staying ahead of these requirements keeps your operation moving and your animals marketable across state lines.