When someone connects a bank account to an AI expense categorisation tool, they are sharing financial transaction data with a third-party platform. Many users do not read the data policy before doing this, which leads to surprises later.
What data is typically shared
At minimum, these tools receive merchant names, transaction amounts, dates, and account identifiers. Some integrations also pull in payee details, reference numbers, and balance information. Depending on the tool and the connection method used, the data may be stored on servers outside Ireland or the EU.
GDPR and where it applies
Under GDPR, businesses processing personal or financial data must understand where that data goes and under what terms. For a sole trader or small business in Ireland, using a tool hosted by a US-based company without a Data Processing Agreement in place could create a compliance gap. This is not a theoretical concern - it is a practical one that accountants and data protection advisors raise regularly.
What to check before connecting
Look for the tool's data processing agreement, its sub-processor list, and its data residency policy. Tools like Expensify and Dext publish these documents, but they are not always easy to find. Checking whether data is stored within the EU is a reasonable starting point.
The myth here is not that AI expense tools are unsafe - many are well-managed. The myth is that they are safe by default without any review on the user's part.