Start with the unexplained ledger entries
For a business investigating ledger discrepancies, give each bidder the same transaction population and questions: which entries lack support, which accounts do not reconcile and which people or systems can explain the differences. Specify an investigation before requesting an expert opinion. A discrepancy is a lead to test, rather than proof of fraud.

Which provider suits which matter?
For an Australian business, choose the shortlist by the dominant task: Deloitte publishes complex dispute and discovery capabilities,[5] PKF evidence collation and expert valuation,[4] and BDO broad fraud and commercial-dispute work.[3]
- Complex litigation or arbitration: Consider Deloitte where the matter requires quantum analysis, document discovery, structured and unstructured data review, asset tracing, or written and oral expert evidence.[5]
- Fraud investigation: Consider BDO for investigations and fraud analytics, PKF for financial investigations and evidence collation, and Deloitte where digital-document analysis or asset tracing is central.[3][4][5]
- Expert valuation: PKF publishes expert-witness valuation and damages-assessment services; BDO covers valuations and loss quantification; and Deloitte addresses contested valuations and quantum disputes.[3][4][5]
These are matches on published scope, not rankings of price, quality or outcomes.
Provider comparison
BDO Australia
Investigation scope: Investigations, fraud data analytics, financial research, valuations and loss-of-earnings quantification, including commercial, construction, insurance, shareholder and director disputes.[3]
Evidence and dispute capability: Findings from evidence, expert-witness work and litigation support, alongside business-interruption claims, fraud investigations and dispute-related valuations.[3]
Suited to (provider description): Companies, professional firms, private clients, regulators, enforcement agencies, governments and not-for-profits seeking litigation support, expert testimony, fraud analytics, dispute valuation or loss quantification.[3]
PKF Australia
Investigation scope: Financial investigations, loss identification, fraud and corruption prevention, valuations, damages assessments and report critiques across commercial disputes and related financial-loss matters.[4]
Evidence and dispute capability: Data sourcing, evidence collation and expert-witness valuations, with a team spanning law enforcement, commercial-dispute work, corporate finance, audit and business services.[4]
Suited to (provider description): Shareholders, businesses, company trusts, corporate groups and other organisations needing evidence collation, financial investigation, fraud prevention or expert valuation.[4]
Deloitte Australia
Investigation scope: Suspected fraud, missing assets, financial misstatement, unexpected results, complex accounting schemes, asset tracing, remediation calculations, transaction disputes and contested valuations.[5]
Evidence and dispute capability: Extracting critical documents; analysing databases, enterprise systems, email and audio; computer-assisted review; quantum analysis; and written or oral expert evidence for judicial and alternative-dispute-resolution forums.[5]
Suited to (provider description): Complex litigation or arbitration involving mixed data sources, contested quantum, asset recovery, discovery, regulatory remediation or support across multiple dispute stages.[5]
Marketing statements should not be treated as comparative evidence. BDO reports successful engagements and help limiting economic damage but gives no quantified result on its service page.[3]
How to assess evidence and expert suitability
Forensic-accounting work can include analysing financial and non-financial material, tracing inaccuracies or fraud, supporting court evidence, and developing valuations or economic-loss models.[2] AFP role material also covers financial analysis, asset-flow tracing, reporting, legal-proceeding support and expert-witness testimony.[1]
None of the three provider pages sets out its ledger-testing methods, chain-of-custody controls, evidence-retention periods or report templates, so ask each provider to explain:
- how ledger entries will be tested and reconciled to source records;
- how source data will be preserved, imaged and transferred, including chain of custody and access controls;
- how long evidence will be retained and who can authorise deletion;
- how document review, version control and calculation changes will be recorded;
- who will collect and analyse evidence, sign the report and give oral evidence; and
- how assumptions, excluded documents, data gaps and limitations will appear in the report.
Request a proposed evidence plan and, where it can lawfully be provided, a redacted example of the intended report structure. Treat both as requested deliverables rather than existing service commitments.
Also confirm whether the engagement includes a regulated service. The ABS notes that registration or licensing may be required for some services, such as auditing.[2] APESB identifies APES 215 as the professional standard for forensic accounting services, covering investigation, consulting-expert and witness roles, including expert-report obligations. Ask which version applies to the professional engaged, the report’s intended role and the forum’s separate requirements.[6]
What to confirm with each provider
None of the three provider pages lists prices, contract terms or delivery commitments, and none shows a last-updated date, so get the following in writing:
- Price: hourly rates, retainers, minimum fees, tax treatment, disbursements and payment terms.
- Scope and timing: deliverables, milestones, dependencies, service levels and the proposed timetable.
- Engagement terms: minimum commitments, cancellation, termination, refunds and rescheduling.
- Acceptance: conflict-check status, required initial documents and other prerequisites.
- Capacity and limits: data and document volumes, entities, jurisdictions, investigation duration and expert-witness appearances.
- Evidence handling: collection methods, chain of custody, access controls, retention periods and deletion authority.
- Performance claims: evidence supporting any proposal-specific promise about speed, recoveries, savings or success.
Give shortlisted providers the same written summary covering the objective, entities, date range, intended forum, known data sources, estimated document volume, required outputs, deadlines and need for expert evidence. Require an itemised proposal separating investigation, data collection, analysis, valuation or quantum work, report preparation, conferences, expert evidence and post-report support. It should also identify personnel, responsibilities, availability and conflict-check status.
References
- Forensic accountant at Australian Federal Police – AFP (afp.gov.au)
- Occupation 211133 Forensic Accountant | Australian Bureau of Statistics (abs.gov.au)
- Forensic Accounting – Audits & Forensic Services – BDO (bdo.com.au)
- Forensic accounting services| Fraud investigation | Accounting litigation | PKF Australia (pkf.com.au)
- Dispute and forensic accounting services | Deloitte Australia | Our services and solutions | Financial Advisory (deloitte.com)
- APESB Standards and Guidance — APES 215 (apesb.org.au)