Livestock Ear Tag Requirements in Nevada: What Every Producer Needs to Know
August 6, 2026
If you raise cattle, sheep, goats, swine, or other livestock in Nevada, understanding ear tag requirements is one of the most practical steps you can take to protect your operation. Official identification rules govern which animals must be tagged, what type of tag qualifies as “official,” and what paperwork must follow your animals across state lines.
Those rules changed significantly on November 5, 2024, when a new federal mandate took effect requiring electronic identification (EID) ear tags for covered cattle and bison moving interstate. Nevada producers who were already navigating brand inspections, brucellosis vaccination requirements, and scrapie programs now have an additional layer of federal compliance to manage.
This guide walks you through every aspect of Nevada’s livestock ear tag requirements — from which animals need official tags to where you can get them and how to keep the records that protect you during a disease investigation or transport inspection.
Pro Tip: Before ordering official 840 RFID tags, confirm your Premises Identification Number (PIN) is active with the Nevada Department of Agriculture. You cannot purchase official tags without a valid PIN on file.
Which Animals Require Official Ear Tags in Nevada
Not every animal on your Nevada operation requires an official ear tag, but the categories that do are broad enough to affect most commercial producers. Under federal regulations in 9 CFR Part 86, the following categories of cattle and bison are subject to official identification requirements for interstate movement: all sexually intact cattle and bison 18 months of age or over; all female dairy cattle of any age and all male dairy cattle born after March 11, 2013; cattle and bison of any age used for rodeo or recreational events; and cattle and bison of any age used for shows or exhibitions.
Nevada’s import requirements specifically call out all sexually intact beef cattle 18 months of age and over and all cattle used for rodeo, show, or exhibition as requiring official eartags — either metal NUES tags or 840-compliant RFID or visual tags. Animals moving directly to a USDA-inspected slaughter facility are handled differently and may move on a USDA backtag instead of a permanent official ear tag.
For small ruminants, all sheep need to be officially identified with scrapie tags, and all goats need to be officially identified using scrapie tags with all tags listed on the Certificate of Veterinary Inspection (CVI). Swine identification requirements are governed primarily at the federal level through the National Scrapie Eradication Program and swine production health plan agreements.
Nevada’s entry permit system covers animals requiring an entry permit — swine, cattle, sheep, and goats — and EID-tagged livestock numbers are tracked and increasing across the state. If you move any of these species across Nevada’s borders, official identification is not optional.
| Species / Category | Official ID Required? | Tag Type |
|---|---|---|
| Sexually intact beef cattle, 18+ months | Yes | 840 RFID (post-Nov. 5, 2024) |
| All female dairy cattle (any age) | Yes | 840 RFID (post-Nov. 5, 2024) |
| Male dairy cattle born after Mar. 11, 2013 | Yes | 840 RFID (post-Nov. 5, 2024) |
| Cattle/bison for rodeo, recreation, shows | Yes | 840 RFID (post-Nov. 5, 2024) |
| Beef feeder cattle under 18 months | Generally no | Backtag if going to slaughter |
| Sheep (most categories) | Yes | Scrapie flock/individual tag |
| Goats (sexually intact, not slaughter) | Yes | Scrapie tag or approved tattoo |
| Swine (interstate) | Yes (group or individual) | PIN tag or production system agreement |
Federal RFID Ear Tag Rule: What Changed in November 2024
On November 5, 2024, new federal rules took effect requiring electronic identification (EID) ear tags for certain cattle and bison moving across state lines. This was the most significant shift in livestock identification requirements in a generation, and it directly affects how Nevada producers tag, sell, and transport covered animals.
USDA APHIS amended the animal disease traceability regulations to require that eartags applied on or after November 5, 2024, 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. In plain terms: a metal clip tag or plastic visual-only tag applied after that date no longer counts as official identification for covered animals.
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. That grandfathering provision matters for Nevada cow-calf operations that have older animals already wearing metal NUES tags.
These changes apply only to official ID for cattle and bison. The purpose of the rule is to improve livestock traceability. Electronic identification tags and systems provide many advantages over traditional metal tags, including faster information sharing, more accurate identification of animals, and significantly faster record searches during disease outbreaks.
Important Note: The November 2024 rule does not change which cattle require official identification — it only changes which tags qualify as official. If your animals did not need a tag before, they still do not need one now.
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 and animals going directly to slaughter remain exempt from the EID requirement at the federal level, though Nevada and destination states may impose additional requirements.
Official 840 RFID Ear Tag Requirements in Nevada
USDA tags have a unique 15-digit number starting with “840,” display the USDA shield emblem, and include an “Unlawful to Remove” print. The number “840” is the country code for the United States, and after the 840, these tags carry 12 additional numbers unique to that animal. No two animals in the country share the same AIN.
Official EID tags are USDA-approved 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.” If a tag you are considering does not have all three of those features, it does not meet the official identification standard.
The only EID technology currently approved by APHIS is an 840 tag. 900-series tags do not fulfill the requirements of this rule because they are not approved as an official means of identification in the United States. Similarly, trichomoniasis testing tags, freeze brands, registration tattoos, farm/ranch tags, or RFIDs using numbers beginning with anything other than 840 are not considered official identification.
A Premises ID is required to purchase USDA tags. You must register your operation’s physical location with the Nevada Department of Agriculture before placing a tag order. When purchasing 840 tags, the purchaser is required to submit their Premise ID number, and the tag distributor will confirm that the Premise ID number given is accurate. This linkage between your PIN and the specific tag numbers you receive is what makes the traceability system function during a disease investigation.
Pro Tip: Keep your tag order receipts and the batch numbers tied to your PIN. If an animal loses a tag and needs to be retagged, you will need documentation showing the original AIN to maintain continuity of identification records.
Species-Specific Ear Tag Rules in Nevada
Each livestock species in Nevada operates under its own identification framework. Understanding the differences prevents compliance gaps when you are moving or selling animals.
Cattle and Bison
As covered above, a USDA rule requiring newly applied cattle and bison official ID tags to have both a visual and electronic component went into effect on November 5, 2024, and the only official tags that meet these requirements are 840 RFID tags. Orange brucellosis vaccinate tags — RFID or metal — remain required for official calfhood vaccinates (OCV). Nevada has a mandatory calfhood brucellosis vaccination requirement, which results in approximately 50,000 heifer calves receiving individual animal IDs annually.
Sheep
The USDA runs a mandatory identification program for sheep and goats. 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 identification. In Nevada, all sheep need to be officially identified with scrapie tags. Flock ID tags and individual 840 AIN tags are both acceptable depending on the movement type.
Goats
All goats need to be officially identified using scrapie tags with all tags listed on the CVI. A legible USDA-assigned premises tattoo is acceptable if linked to a scrapie premise/flock ID and listed on the CVI. Breed registry tattoos are acceptable if accompanied by the registry certificate and the certificate number listed on the CVI. However, USDA-assigned and breed registry tattoos are not acceptable if animals are going to a livestock market.
Swine
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. Producers who are moving swine via interstate commerce within their production system may qualify if all the necessary agreements are implemented. For swine moving outside a production system, PIN tags from authorized manufacturers apply. Feeder swine — swine less than four months of age intended for feeding purposes — upon arrival in Nevada must be restricted to the premises of their destination until they are moved directly to slaughter or to a market.
Equine
For interstate movements, most states require that horses be individually identified and accompanied by a Certificate of Veterinary Inspection. 840 AIN microchip implants are available as an approved identification method for equine in Nevada.
Where to Get Official Ear Tags in Nevada
You have several routes for obtaining official 840 RFID tags in Nevada. The right channel depends on your operation size, species, and whether free state-distributed tags are available.
- USDA-approved tag manufacturers: You can purchase tags from a USDA-approved tag manufacturer. Allflex, Datamars, Destron, Leader, Shearwell, Wuxi, and Y-Tex sell approved RFID tags. Orders require your PIN to be submitted at the time of purchase.
- Veterinary supply distributors and farm stores: Tags are available through veterinary supply distributors, farm supply stores, and directly from manufacturers. Many Nevada feed and ranch supply retailers stock approved tags or can place orders on your behalf.
- Your accredited veterinarian: Producers can purchase tags from approved manufacturers directly or check with their veterinarian to see if they have a supply of RFID tags. Vets are especially useful for brucellosis OCV tags, which must be applied by a herd veterinarian at the time of vaccination.
- State veterinarian’s office: 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 the Nevada Department of Agriculture to check current tag availability in your area.
The average cost of an 840 tag is approximately $3 per head when purchased through commercial channels, according to the National Cattlemen’s Beef Association. RFID 840 tags cost between $2 and $5 per tag, depending on the manufacturer, tag style, and order quantity. Ordering in volume typically reduces per-tag cost.
Pro Tip: Only Animal Identification Number (AIN) Device Managers can redistribute official 840 EID tags. If someone offers you unregistered tags without verifying your PIN, those tags will not be linked to your premises and will not satisfy traceability requirements.
How and When to Apply Ear Tags in Nevada
Timing and placement both matter when applying official ear tags. Applying a tag incorrectly — or at the wrong point in the animal’s life — can create compliance problems at a sale barn or inspection point.
When to Tag
Apply official identification before any movement that requires it. For cattle going to auction, crossing state lines, or entering a rodeo or show, the tag must be in place before the animal leaves your premises. For brucellosis calfhood vaccination, the new official brucellosis identification is an orange RFID button tag placed in the right ear by the herd veterinarian at the time of vaccination.
Placement
USDA prefers producers apply ear tags in the left ear, leaving the right ear for official use. 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. Following this placement guidance reduces the chance of tag loss and keeps official tags visible during inspections.
Application Tips
Since March 11, 2015, all official eartags applied to animals must bear an official eartag shield. APHIS VS authorizes tag manufacturers to imprint the official eartag shield on approved tags. When applying EID button tags, remove the plastic insert from the applicator’s lower jaw before punching, and follow the specific manufacturer’s orientation guidelines to ensure the RFID transponder reads correctly after application.
For matched-pair tags — where a button EID tag and a visual flag tag share the same AIN — 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, as there is still another form of identification.
If you raise sheep or goats and are considering using cattle RFID tags for convenience, stop. Do not use cattle RFID tags on small ruminants. These animals have their own RFID tags approved under the National Scrapie Eradication Program.
Ear Tag Requirements for Interstate Movement in Nevada
Moving livestock across Nevada’s borders — whether you are sending cattle to a sale in California or receiving breeding sheep from Idaho — triggers a set of federal and state documentation requirements that go hand-in-hand with official ear tags.
Cattle moving interstate, whether or not already bearing official identification, must be accompanied by an Interstate Certificate of Veterinary Inspection (ICVI) or alternative movement document. The ICVI must list each animal’s official identification number. Only an accredited veterinarian may issue a health certificate for interstate or international travel.
Nevada participates in brand inspection agreements with neighboring states. Most cattle exported from Nevada ship from a producer’s operation in truck-load lots as opposed to public livestock auctions. Brand inspection of all cattle is a requirement of these shipments when transferring ownership, crossing brand inspection district boundaries, or en route to slaughter. Brand inspection and official ear tag identification work together — one does not replace the other.
For producers moving animals into Nevada, a legible CVI may be faxed or emailed to the permit office for review and can then be entered into the NDA’s online entry permits system. Nevada requires an entry permit for cattle, sheep, goats, and swine. If you are moving livestock out of Nevada, the receiving state’s requirements govern what identification and documentation you must have in place before departure.
Neighboring states like Idaho recognize brand agreements with Nevada for certain movements. Idaho’s exception for moving beef breed cattle without listing individual identification on the CVI applies only to animals moving into or out of Nevada, Oregon, Utah, or Wyoming. Even under these agreements, individual official identification must still be present on each animal — it simply does not need to be listed line-by-line on the CVI.
If you regularly move livestock between Nevada and other western states, review the transporting livestock laws in Nevada and check the specific livestock trailer requirements in Nevada to ensure your transport setup meets all applicable standards alongside your tagging obligations.
Important Note: Destination state requirements can be stricter than federal minimums. Always verify the receiving state’s import rules before loading animals. Contact the Nevada Department of Agriculture’s permit office at entrypermits@agri.nv.gov or check the NDA import requirements page for current guidance.
Recordkeeping Requirements for Ear-Tagged Animals in Nevada
Tagging an animal is only half of the compliance equation. The records you maintain — and how quickly you can produce them — determine whether official identification actually serves its traceability purpose during a disease outbreak or regulatory inspection.
The 2024 federal rule also clarified certain record retention and record access requirements and revised some requirements pertaining to slaughter cattle. These clarifications affect Nevada producers who sell through auction, move animals interstate, or participate in federal disease programs.
At a minimum, your records should include:
- Tag purchase records: Document the batch of 840 AINs tied to your PIN, the date of purchase, and the distributor. Once your Premise 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.
- Application records: Note which AIN was applied to which animal, the date of application, and the animal’s species, breed, sex, and approximate age. Link the 840 number to any existing management tag numbers in your herd management system.
- Movement records: Retain copies of all CVIs, entry permits, brand inspection certificates, and sale receipts. Tag information is recorded when tags are applied, at selling points, when official movements are recorded, and when a disease investigation is being conducted.
- Retag records: If an animal loses its official tag, document the original AIN, the date of loss, and the replacement AIN applied. Retagging must use a new 840 RFID tag — you cannot reuse a tag or substitute a non-official tag.
RFID allows a quicker response during disease investigations because animal health officials can process tag information electronically. The Board and USDA do not passively track RFID tags on producers’ private property or remotely monitor herds. The data is accessed only when there is a documented disease investigation or official movement record.
Nevada producers who sell through livestock markets benefit from the state’s entry permit infrastructure. Nevada’s entry permit system provides traceability information within an hour during regular operating hours and is also remotely accessible to the State Veterinarian outside of normal operating hours if needed. That speed is only possible when ear tag records are accurate and complete on your end.
For producers managing multiple species or multi-state operations, maintaining a simple spreadsheet or herd management software log that links each animal’s AIN to its movement history is the most practical approach. Good records protect you from liability, speed up disease investigations, and demonstrate compliance to buyers and inspectors alike.
Producers moving livestock to or from neighboring states can also review the trailer and transport requirements for those states to ensure full compliance on both ends of any shipment: Idaho, Oregon, Wyoming, and Colorado all have specific requirements that interact with Nevada’s identification rules.
If you have questions about your specific operation’s requirements, contact the Nevada Department of Agriculture’s Livestock Identification Regulations page or reach out to the NDA’s Animal Industry division directly. Staying current with both federal APHIS rules and Nevada-specific requirements is the most reliable way to keep your operation moving without interruption.