Cattle traceability: why the transit permit alone is not enough

What the GTA guarantees, and what it does not

The Guia de Trânsito Animal (GTA) authorises and records cattle movement between properties, issued by each state’s agricultural defence agency. It is the official animal transit document in Brazil — but there is no public API to validate one in real time. In practice it is a document the supplier presents on their own account, with no simple independent check at the point of purchase.

The “paper cattle” mechanism

That blind spot is exactly what the pattern known as boi de papel — “paper cattle” — exploits: a GTA issued to record an animal moving to a clean property, without the animal having been born or raised there. It lets cattle raised on embargoed land, or on land overlapping indigenous territory, be laundered through one or more legitimate intermediate properties before final sale to the packing plant. Every step in the direct chain looks clean, while the real problem sits at the origin.

This is why indirect suppliers — those selling to a property that in turn sells to the packer — are a well-known blind spot in cattle chain audits. The CAR and deforestation history of the property selling directly to the packer can be immaculate while the actual problem is one or two links back.

Why this matters specifically for EU buyers

The EUDR and European buyer questionnaires require traceability to origin, not merely to the last visible link. A packer auditing only direct suppliers, with no mechanism to catch this class of gap, is exposed to precisely the risk those rules were designed to detect — and so, downstream, are you.

The defence: cross-reference against the invoice

The defence is not to distrust every GTA — the overwhelming majority reflect real movements. It is to cross-reference against a document with a completely independent origin: the electronic invoice (NF-e) for the cattle sale, issued through the state tax system with its own validation chain.

When a GTA has no corresponding NF-e — same volume, same time window, same parties — that is a real signal, though not proof of fraud on its own. It is exactly the kind of question a buyer audit asks, and exactly the kind worth having an answer to before it is asked.

Why this is hard to do manually

GTA and NF-e live in entirely separate systems — one state agricultural, one tax — that do not talk to each other. Cross-referencing them by hand means assembling both documents for every movement of every supplier and comparing volume, date and parties. For one transaction that is simple. Across a portfolio of cattle suppliers, repeated for each new consignment, it is not.

BrazilTrace automates that cross-reference and flags where one document does not corroborate the other.

Common questions