Herd keepers in Northern Ireland will be able to fit electronic identification (EID) ear tags to newborn cattle from Monday 7 September 2026, making Northern Ireland the first UK region to offer bovine EID. The scheme is run by the Department of Agriculture, Environment and Rural Affairs (DAERA), the Northern Ireland department responsible for farming policy and animal health, and it is entirely voluntary.
A keeper who opts in may fit one approved EID tag in place of one of the conventional tags an animal would otherwise carry. As DAERA puts it in its guidance, the voluntary introduction of EID means herd keepers in Northern Ireland may choose to use an official EID tag in place of one of the conventional tags, without any requirement to do so. Anyone who would rather stay with conventional tags can carry on identifying animals exactly as they do today, at no extra cost and with no penalty.
DAERA Minister Andrew Muir said: “The introduction of voluntary EID for cattle is an important step forward for Northern Ireland. It will give herd keepers the choice to adopt this technology where it works for their business, while supporting more accurate, efficient and safer recording of cattle movements.” He added: “Northern Ireland will be the first region in the UK to make bovine EID available, and this voluntary approach allows the sector to begin realising the benefits without placing new requirements on all herd keepers.”
Low frequency tags, because the law requires it
The tags are low frequency (LF) devices. DAERA’s Q&A on the scheme is explicit on the point: “Under AHL, bovine EID is optional, but if it is used, it must be LF tags.” AHL is the EU Animal Health Law, the regulation governing animal identification and traceability that continues to apply in Northern Ireland.
DAERA describes the underlying technology as a microchip embedded in the tag, working on “low frequency radio waves or Radio Frequency Identification (RFID)”. A reader emits a radio signal, the microchip in range answers with a unique identity number, and that number passes straight into a computer for storage and analysis. In practice, LF livestock transponders in Europe operate at 134.2 kHz and follow ISO 11784, which defines the code structure of the identity number, and ISO 11785, which defines the technical concept for transmitting it, using either FDX-B or HDX signalling. The same family of standards has underpinned sheep EID and companion-animal microchipping for years.
DAERA is clear about what the chip does and does not carry: “The EID chip is used to carry the animal’s identification number in a format that can be read electronically. It does not hold personal data about the herd keeper.”
What it costs and what it needs
EID tags must be bought from DAERA-approved suppliers, the same firms that already supply conventional cattle tags. An EID tag costs roughly GBP 1.50 to GBP 2 more than a conventional one. A reader is optional and costs in the region of GBP 600 excluding VAT, depending on specification. There are no plans to subsidise the use of EID tags, so both figures fall to the keeper.
Readers do not need an internet connection or a mobile signal to scan a tag, which matters on farms with patchy coverage. Data can be transferred to farm-management software afterwards, where it can be tied to weights, treatments and movements. Fixed panel readers can also be installed permanently in places such as a dairy parlour, so animals are identified automatically as they walk past. DAERA lists the practical gains as less paperwork, faster data capture, the removal of transcription errors when numbers move straight into a computer, and better management analysis, noting that “No direct animal contact is necessary to achieve accurate identification thus improving speed and safety of handling”.
Approved EID tags have a white front section rather than the familiar yellow, which distinguishes them at a glance and makes it easier to work out which of a pair an animal has lost. Livestock markets and abattoirs will not have to install scanners or change their handling procedures because of the launch. Genotyping tags that incorporate EID are available only for cattle whose identification numbers begin “XI 0”.
Voluntary now, possibly mandatory later
Electronic identification is not new to Northern Ireland agriculture. EID has been mandatory for sheep in the region since 31 December 2009, which is why the supply chain and the reader technology are already familiar to a good many farms. More coverage of livestock and other animal identification schemes is collected in our Animal Tagging section.
Cattle may follow. DAERA consulted on making EID compulsory for newborn calves, issuing a final call for views on 18 February 2026 before the consultation closed on 23 February 2026. The proposal was that all newborn calves be fitted with electronic identifiers carrying unique identification numbers, with printed numbers continuing on the tag pair, and the consultation also sought views on dedicated EID tag colours and ear positioning. The timescale set out at the time was voluntary bovine EID from mid-2026 and mandatory EID for newborn calves at some point during 2027, subject to a favourable response.
Announcing that consultation, Muir said EID technology “has already shown clear benefits in other sectors and internationally, supporting more accurate traceability, reducing tag-reading errors”, adding that “Stakeholder feedback will help ensure that the introduction of bovine EID is practical, proportionate and genuinely beneficial across the industry.” DAERA is reviewing the responses and any proposals will be announced separately, so the 7 September 2026 launch stands on its own as a voluntary scheme.
Herd keepers with questions can contact DAERA at [email protected]. A set of questions and answers on the voluntary introduction is published at daera-ni.gov.uk.
Read more at https://www.daera-ni.gov.uk/articles/electronic-identification-eid
