Insights

Your accounting data is heading into LLMs

MYOB lists “AI BAS” in its product footer. Xero has “JAX,” described as your AI finance partner. Both companies have published open APIs for years. Direction is obvious: the accounting data that runs your business is being piped into language models, either through native product features or through third-party integrations that sit on top of the API layer.

This is not a future trend. It is happening now, and the question for Australian SMEs is no longer whether to connect their accounting stack to AI tools. It is how to do it without handing over more data than they realise.

What the integration actually looks like

Plumbing is straightforward. Xero and MYOB both expose REST APIs that return transaction records, customer details, and BAS/GST data in JSON. An integration layer (a middleware service, an n8n workflow, or a direct API call) pulls that data, formats it as a prompt or context window, and sends it to an LLM. That LLM generates a cashflow summary, flags an anomaly, or drafts an email to a late-paying customer.

MYOB’s developer portal documents APIs across its full product range, from Business through to the enterprise-tier EXO and Acumatica platforms. Xero’s API covers the same ground for its platform. Both are well-documented and mature. Connecting to them is not the hard part.

A hard part is what happens to your data after the API call.

The data risk Macquarie flagged

In August 2026, Macquarie Cloud Services told CRN Australia that data risk and cost were the two issues businesses were not thinking about carefully enough as AI adoption moved from pilot to production. This risk is not hypothetical. When your invoice data, customer names, and ABNs leave your accounting platform and enter an LLM, they cross at least two trust boundaries: the integration layer and the model provider.

For a 15-person business, this might not feel urgent. But if you are an MYOB or Xero subscriber feeding client data through an AI integration, you are creating a data processing chain. Under the Privacy Act 1988, you remain accountable for what happens to that data, even if the processing occurs on infrastructure you do not control.

Australian Bureau of Statistics data from June shows 12 per cent of Australian businesses used AI during 2024-25. Among innovation-active small businesses, the figure was 19 per cent. Among non-innovation-active businesses: 4 per cent. That gap tells you most businesses have not thought through the integration yet. Ones that have are moving fast, and some are not asking enough questions about where the data goes.

What a careful integration looks like

You do not need to avoid AI integration with your accounting data. You need to know where the data goes and what happens to it after it leaves your platform.

First, which fields are being sent. A cashflow analysis needs transaction amounts and dates. It does not need customer ABNs, addresses, or contact names. If the integration sends the full record set, strip it down.

Second, where the data is processed. If the LLM provider stores prompts for training, your financial data becomes part of their corpus. Both OpenAI and Anthropic offer API tiers that do not retain input data. Use those tiers. The extra cost per call is small.

Third, who has access to the integration layer. If you are using an n8n workflow on a VPS, the data transits your server. If you are using a SaaS connector, it transits someone else’s. Know which one applies and check the contract.

MYOB’s Accounting Industry Monitor, published in July 2026, found that 49 per cent of accounting firms said they could not figure out how to apply AI in a practical way. Firms that solve this will pull ahead. Firms that rush the integration without asking these questions will create problems that are expensive to unwind.

Your accounting data is the most structured, most complete data your business owns. Connecting it to AI is the right move. Doing it carelessly is a compliance and privacy liability that no productivity gain justifies.

Sources:

  • Australian Bureau of Statistics, “Characteristics of Australian Business 2024-25,” June 2026
  • MYOB Accounting Industry Monitor, July 2026
  • Macquarie Cloud Services, interview in CRN Australia, August 2026
  • MYOB Developer Portal (developer.myob.com)
  • Xero Developer Platform (developer.xero.com)
  • Privacy Act 1988 (Cth)