AI in credit control: what artificial intelligence can and cannot do for UK small businesses

Where AI genuinely helps in getting paid

• Prioritising: ranking overdue invoices by amount, age and the customer's past behaviour, so the most valuable chase happens first.
• Drafting: producing a first version of a reminder in a consistent, factual tone that a person can check before it is sent.
• Matching: reading remittance advice and bank references to mark invoices as paid without manual reconciliation.
• Forecasting: estimating when cash is likely to arrive, based on how each customer has paid before.

None of this replaces the basics. An invoice still needs clear payment terms, and your statutory right to interest and fixed compensation on a late business debt comes from the law, not from the software ^[4].

The data protection rules that apply

Invoices to limited companies mostly contain business data, but invoices to sole traders, partnerships and private customers contain personal data. The ICO's guidance explains how the UK GDPR principles — lawfulness, fairness, transparency, accuracy and data minimisation — apply to information used in AI systems ^[1].

The Data (Use and Access) Act 2025 amended the UK rules on automated decision-making, and regulations in force since 12 May 2026 require the Information Commissioner to prepare a Code of Practice on AI and automated decision-making ^[2][3].

Automated decisions: keep a person in the loop

A reminder email is rarely a decision with a legal or similarly significant effect. Refusing credit, stopping supply or referring a debt to collection can be. For decisions like these, the ICO's draft guidance points to meaningful human involvement — an active review before the decision takes effect, not a token sign-off ^[3].

In practice: let the software suggest, and let a person decide anything that changes a customer's position.

Questions to ask any AI credit control tool

• Which data does it use, and is any of it sent to a third-party AI model?
• Is it a data processor acting on your instructions, with a written contract ^[5]?
• Can you see and edit every message before it goes out, or at least the template it follows?
• Does it stop immediately when an invoice is paid or disputed?

How Nemexio approaches it

Nemexio's reminder rules are deterministic: every message follows a template you can read, cites the deadline or statute it relies on, and stops the moment the invoice is paid or the payer reports a problem. Decisions about escalation stay with you.