When the numbers stop making sense

Most workplace investigations start with a human concern: a colleague has raised a worry about expenses, a manager has noticed a supplier invoice that looks familiar, or a whistleblower has described payments going somewhere they shouldn't. The people handling that investigation are usually skilled in employment matters, not in unpicking double entries. That is the point at which a forensic accountant becomes genuinely useful.

Forensic accounting is not simply "accounting with a serious face". It is the discipline of reconstructing what happened to money, often from incomplete or deliberately obscured records, and then explaining that reconstruction in language a disciplinary panel or an employment tribunal can follow without a finance degree. In a misconduct inquiry, that combination of technical rigour and plain communication is exactly what you need.

What a forensic accountant actually brings

A good forensic accountant is part investigator, part translator. In practice, their contribution usually falls into four areas:

• Tracing transactions. Following money through bank accounts, ledgers, purchase systems and third-party records to establish where it went and who authorised it.
• Reconstructing records. Rebuilding an audit trail where records are missing, altered, or held in inconsistent formats across several systems.
• Quantifying loss. Putting a defensible figure on what the organisation has lost, including hidden costs such as inflated contract prices or duplicated payments.
• Explaining the evidence. Producing schedules, summaries and witness statements that set out complex financial patterns clearly and answer the specific questions the panel needs to decide.

They can also tell you, early on, when there is nothing there. A short review that closes down a suspicion with evidence is a good outcome, not a wasted instruction.

Scope the work before anyone starts testing

The single biggest cause of expensive, inconclusive forensic work is a vague brief. Before the accountant opens a spreadsheet, agree the terms of reference in writing. These should cover the period under review, the entities and bank accounts in scope, the specific questions you need answered, and who will receive the findings.

Proportionality matters. A £4,000 expenses query does not justify a six-month review of every transaction since 2019. Ask what decision the evidence will support — a disciplinary hearing, a referral to a professional body, a settlement discussion — and design the work around that. Also settle data handling early: personal data pulled from payroll or banking systems needs a lawful basis, a defined retention period and a secure transfer method, and your accountant should be able to explain how they meet those obligations.

Following the money: techniques you will see in practice

The methods are less exotic than television suggests, but they are systematic and thorough.

• Bank and ledger reconciliation. Matching payments out of the organisation against supporting invoices, approvals and goods received.
• Duplicate and anomaly testing. Searching for repeated invoice numbers, near-identical amounts, round-figure payments, and suppliers sharing addresses, bank details or directors with employees.
• Supplier and payroll analysis. Checking whether entities on the purchase ledger are genuine trading businesses, and whether ghost employees or altered bank details appear on payroll.
• Digital pattern analysis. Testing whether the distribution of digits in a payment run looks statistically unusual, which can flag fabricated invoices worth examining closely.
• Interviews and third-party evidence. Speaking with finance staff and, where appropriate, obtaining records from banks or customers to corroborate what the internal systems show.

Each step produces a working paper that records what was examined, what was found and what was excluded. That discipline is what makes the eventual findings stand up to challenge.

Quantifying loss without overstating it

Disciplinary panels and tribunals both want a number, but they want an honest one. A forensic accountant will typically distinguish between the gross value of the transactions in question, any recoverable amounts, and the net loss to the organisation. They will also be clear about assumptions — for example, whether an overcharged contract would have been awarded to a cheaper supplier anyway.

Where evidence supports a range rather than a single figure, say so and explain why. A well-reasoned range of £38,000 to £45,000 is far more persuasive than a spuriously precise £41,237. It also protects the organisation from accusations of exaggeration if the matter proceeds further.

Presenting evidence that panels and tribunals can follow

The final product is usually a written report supported by schedules and, if needed, a witness statement. Good reports share the same qualities: a clear summary at the front, a plain-English explanation of method, a schedule for every figure quoted, and an explicit note of limitations.

Be clear about the accountant's role. In most internal disciplinary processes, they give factual evidence about what the records show. If the matter reaches an employment tribunal, expert evidence generally requires permission and must be independent of the parties — so it helps to have kept the accountant's instructions factual from the outset rather than asking them to advocate a conclusion.

Above all, keep the language human. A panel of three people, none of whom are accountants, needs to understand the evidence well enough to make a fair decision. If they can follow the story of the money from start to finish, the forensic work has done its job.