Electronic identification for cattle is coming, but later than first planned, and the change matters most for one practical decision: how many conventional tags to order.
Update, August 2026: The timetable has moved. Defra told stakeholders in a June 2026 letter, first reported by Farmers Weekly, that bovine EID for calves and the new traceability system replacing BCMS will now arrive together in mid-2027, rather than EID following a separate earlier rollout. Livestock Information Ltd's guidance now reflects this and tells cattle keepers they "don't need to do anything just yet." We have corrected the dates and the tag-ordering advice below.
If you're already using EID tags for sheep, much of this will feel familiar. If not, the transition is designed to be straightforward, and there is now more time than the original timetable suggested.
The short version
- England: bovine EID for newborn calves arrives mid-2027, at the same time as the new traceability system. The exact date has not been announced.
- At least 12 months' notice has been promised before compulsory use, so the date will not arrive unannounced.
- No retagging. The existing national herd is unaffected. Only calves born after the implementation date need BEID tags.
- Wales is later than England — gov.wales states 2028, not 2027. Several secondary sources still say 2027; they are out of date.
- Scotland is going its own way with UHF rather than low frequency, and has not published an implementation date. See below.
What is BEID?
Bovine Electronic Identification (BEID) uses radio-frequency identification (RFID) technology embedded in ear tags. Each tag contains a tiny microchip that stores a unique identification number, which can be read electronically without needing to physically restrain the animal.
The technical standards require:
- Low frequency (LF) technology - The same technology currently used for sheep EID
- Compliance with ISO 11784 and ISO 11785 - International standards for animal identification
- Minimum 12cm read distance - When using a portable reader
When Does This Start?
According to the government announcement, BEID will be introduced for all newborn calves in England from a set date in 2027. Following Defra's June 2026 letter to stakeholders, that now lands in mid-2027, alongside the new traceability system rather than ahead of it.
The government has committed to giving at least 12 months' notice before any compulsory use. That commitment is the one worth holding on to: it means the date cannot appear without warning, and it is what makes the tag-ordering question below answerable.
Important: There is no requirement to retag the existing national herd. Only calves born after the implementation date will need BEID tags.
How Many Conventional Tags Should You Order?
This is the question that actually costs money, and the original advice on this page has changed.
Ordering tags is a real decision with a deadline attached, and the guidance in circulation has been telling keepers to buy short since 2024. One keeper put it plainly on The Farming Forum: they had been advised to order only enough to last to the end of 2024 because of the impending change, and were still waiting, with nothing on the official sites to go on.
Here is what the confirmed facts support:
- The earliest compulsory date is mid-2027.
- At least 12 months' notice has been promised before that date.
- Only calves born after the date need BEID tags.
So conventional tags ordered now will remain usable for calves born up to that point, and there is no cliff edge where unused stock becomes worthless overnight. Buying a normal quantity for your expected calvings is reasonable again. What is still worth avoiding is stockpiling years of conventional tags on the assumption that nothing will change, because when the notice period does start, you want to be able to switch without a shed full of tags you cannot use.
If your supplier or adviser is still telling you to buy hand-to-mouth on the basis of a 2026 deadline, that advice predates the delay.
What Will the Tags Look Like?
BEID tags can be:
- Flag tags - The familiar plastic tags with printed numbers
- Button tags - Smaller, more compact tags
- Metal tags - Durable options for certain applications
All BEID tags will use a reserved colour to distinguish them from conventional tags. Calves born after the implementation date will need at least one BEID tag (which can be either the primary or secondary tag), encoded with the WYSIWYG (What You See Is What You Get) identification number.
The Numbering System
The identification numbering string for BEID tags will use either:
- The two-letter alpha country code (GB)
- Or the three-digit numeric country code (826)
Followed by a unique code of up to 12 digits for the animal. Unlike the current system, there will be no check digit.
This format aligns with existing sheep EID numbering, making it easier to use the same equipment for both species.
Do I Need to Buy Readers?
In plain terms: you don't have to buy reading equipment.
According to Livestock Information Ltd, farmers won't need to read EID tags on their farm unless they choose to. Markets and abattoirs will handle the electronic reading.
During the transition to a fully EID cattle population, animal movements can be reported using:
- EID reads - Electronic scanning
- Barcode scans from passports - Using the existing barcode on cattle passports
- Visual reading of tags - The same method you use now
So you can continue reporting movements exactly as you do today, even after BEID becomes mandatory for new calves.
If You Want to Buy Readers
While not required, EID readers can make herd management easier. If you're considering investing:
Compatibility
BEID tags use low frequency (LF) technology, the same as sheep EID. This means:
- Existing LF sheep readers will work for cattle - No need for separate equipment
- 100% compatibility with readers meeting ISO 11784/11785 standards
If you already have a stick reader or panel reader for sheep EID, it should work for cattle BEID.
Types of Readers
- Stick readers - Handheld devices, good for individual animal scanning
- Panel readers - Fixed readers for races and crushes
- Race readers - Automated reading as animals pass through
What to Look For
- ISO 11784/11785 compliance
- Minimum 12cm read distance (the regulatory requirement)
- Battery life suitable for your needs
- Data storage and transfer options
- Compatibility with your farm management software
Tag Costs
Currently, a set of tags including a low frequency EID management tag costs just over £1 more than a set of conventional tags.
This small price difference is expected to narrow as EID tags become standard.
Practical Preparation Steps
Now (2026)
- Order conventional tags as normal for your expected calvings, but don't stockpile years ahead. See the tag-ordering section above for why this changed.
- Review your sheep EID setup if you have one. The same readers and systems will work for cattle.
- Check your farm management software - Ensure it can handle EID data. Modern systems like Agrianta are building in BEID support.
- Consider your handling facilities - Do you have a good race or crush where animals can be scanned if needed?
When BEID Launches (2027)
- Start ordering BEID tags for all new calves born after the implementation date
- Update your tagging routine - BEID tags are applied the same way as conventional tags
- Register normally - The process for registering calves doesn't change, just the tag technology
- Report movements as usual - You can still report visually, by barcode, or electronically
The Bigger Picture
BEID is part of the wider transition to the Livestock Information Service (LIS), which is replacing BCMS. Together, these changes are designed to:
- Speed up disease tracing - Electronic identification makes tracking faster and more accurate
- Reduce paperwork - Digital records and combined movement reporting
- Improve data quality - Fewer transcription errors than manual entry
- Enable better farm management - Real-time data for your own decision-making
Common Questions
Do I need to retag my existing cattle?
No. There is no requirement to retag the existing national herd. Only calves born after the 2027 implementation date need BEID tags.
Can I still use visual tags?
Yes. Calves will need at least one BEID tag, but the other tag can be conventional if you prefer. The BEID tag can be either the primary or secondary tag.
What about Scotland?
Scotland is diverging. It is pursuing ultra-high frequency (UHF) technology for cattle rather than the low frequency England and Wales are adopting, which means readers and tags are not interchangeable across the border.
Being straight about the rest: we could not find a published implementation date from the Scottish Government. Articles asserting a specific month exist, but we could not trace any of them to a gov.scot source, so we are not repeating a date we cannot stand behind. If you farm in Scotland, treat the timing as unconfirmed and check ScotEID directly before making tag or reader decisions.
What about Wales?
Later than England. gov.wales says 2028. Separately, Welsh cattle registration and movements are moving from BCMS to EIDCymru — but the Welsh Government's advice is explicit that you should not register cattle on EIDCymru yet.
What if my reader can't pick up a tag?
BEID tags must be readable at a minimum 12cm distance. If you're having trouble, check the tag is properly positioned in the ear and that your reader batteries are charged. During the transition, you can always fall back to visual reading.
Will cattle passports change?
Paper passports are expected to be phased out eventually as LIS rolls out, but this won't happen overnight. Passports will remain valid during the transition.
The Bottom Line
BEID represents a sensible modernisation of cattle identification. The technology is proven (sheep farmers have used it for years), the costs are minimal, and the transition is designed to be gradual.
The key message is: don't panic, but do prepare. Order tags normally without stockpiling years ahead, check your existing EID setup if you have sheep, and make sure your record-keeping systems are ready for electronic data.
By the time BEID becomes mandatory in mid-2027, it should feel like a natural evolution rather than a dramatic change. And you will get at least twelve months' warning before it does.
Sources
- Government announcement on cattle identification changes - Livestock Information Ltd
- Bovine official electronic identification (EID) technical standards - GOV.UK
- LIS Cattle Support - Livestock Information Ltd
- Changes to cattle identification and traceability - NFU Online
- Electronic cattle tags to be made mandatory in England - NFU Online
- Defra delays cattle traceability overhaul to 2027 - Farmers Weekly, 8 June 2026 (press report of the Defra stakeholder letter)
- Recording movements for cattle - Livestock Information Ltd (official guidance confirming mid-2027)
- When will bovine EID be introduced? - GOV.WALES (confirms 2028 for Wales)
- Planned move from BCMS to EIDCymru - GOV.WALES
