Most businesses only ask this question after something has gone wrong. By then, you might already be behind. The conventional image of a forensic accountant is a reactive one: an expert brought in after fraud has been discovered, a dispute has escalated, or regulators have come knocking. That picture is not wrong, but it is incomplete. The more accurate answer to the question above is: earlier than you think, and more often than you assume.
When a dispute turns financial
The most obvious trigger is litigation. When a commercial dispute reaches the point where money is at stake via for example: lost profits, breach of contract, post-acquisition warranty claims, business interruption losses. When the numbers become a key feature in the argument.
Courts and arbitration panels do not accept rough estimates or management accounts presented by an interested party. They require an independent, structured, and defensible analysis prepared by someone who understands both the financial substance and the process. This can apply across a wider range of disputes than most businesses appreciate. Some of our example cases in the recent past: Shareholder disagreements over value, construction claims over cost and delay, intellectual property infringement and royalty disputes, professional negligence claims, and matrimonial proceedings involving business assets. Other than us, what’s the commonality between these? That the financial question is often harder to answer than the feuding parties can agree, and most importantly: the quality of the answer frequently determines the outcome.
If you engage your forensic accountant early, i.e. before parties have become entrenched and before disclosure, this can shape the way a case is framed.
When something does not add up
Fraud is rarely obvious. It tends to surface as anomalies: margins that do not hold, supplier relationships that cannot be fully explained, cash flows that diverge from reported profits, or simply a growing unease that the numbers being presented do not reflect commercial reality. The instinct to investigate quietly and internally is understandable, but it carries its own risks. Often inexperienced investigators can compromise evidence that you may need to rely on later. Culpability can become muddied, and the window in which assets can be traced and recovered narrows quickly.
Corporate investigations, fraud and bribery investigations, regulatory inquiries, and criminal proceedings all require a rigour of evidence-gathering and analysis that goes beyond what internal finance teams are typically equipped, or independent enough, to provide. Our forensic accountants bring the experience, methodology and the professional distance that those situations demand. And the common theme in this thought piece: the earlier we are involved, the better the evidential trail and the stronger the position, whether the matter ends in recovery, prosecution, or a negotiated resolution.
When you are doing a deal
M&A due diligence tends to focus on commercial and legal risk. Financial risk, particularly the kind that is deliberately obscured, requires a different lens. Integrity due diligence, examining the provenance of earnings, the integrity of management information, and the presence of hidden liabilities or suspicious relationships, is not the same exercise as standard financial due diligence. It asks different questions and looks in different places.
Acquiring a business without it is a risk that only becomes visible after completion, usually at significant cost. The same logic applies to warranty and indemnity disputes that arise post-transaction: where a seller’s representations turn out to be inaccurate, quantifying the loss and attributing it correctly is a forensic exercise, not an accounting one.
When compliance is a genuine obligation, not a box-tick
Anti-money laundering compliance, fraud risk management, and media rebate contract compliance are areas where the gap between what organisations believe they are doing and what they are actually doing can be substantial. The consequences of that gap can be regulatory sanction, reputational damage, and in some cases criminal liability. In my opinion, these are severe enough that the question should not be whether to invest in forensic-grade compliance review, but which forensic accountant is in your favourite contacts.
Organisations that treat compliance as a periodic exercise rather than a continuous discipline tend to discover its inadequacy at the worst possible moment: when a regulator is already in the building or a counterparty is already making a claim.
The cost of waiting
There is a consistent pattern across all of the above: the cost of engaging a forensic accountant early is almost always lower than the cost of engaging one late. Early involvement preserves options. It shapes strategy. It identifies issues when they are still manageable and evidence is still intact. Late involvement, by contrast, is almost always remedial, i.e. responding to damage rather than limiting it.
So, the question “when should you hire a forensic accountant?” has a simple answer: every time and early!