# Forensic Accountant Expert Report: Structure and Exhibits

- Author: PreciseBankFlow (https://precisebankflow.com)
- Published: 2026-10-17
- Category: Forensic review in disputes
- Canonical: https://precisebankflow.com/blog/forensic-accountant-expert-report

> How a forensic accountant expert report is structured: scope, sources, methods, findings and exhibits built from bank records that hold up in court.
A forensic accountant expert report sets out the question the expert was asked, the records relied on, the methods used, the opinions reached and the supporting exhibits. With bank records, each figure should trace to a schedule and each schedule to statement pages, so another accountant can repeat the work.

## What a forensic accountant expert report must contain under Rule 26

In federal civil cases, a retained expert's written report must meet Federal Rule of Civil Procedure 26(a)(2)(B). It lists six items: opinions with their reasons, facts or data considered, exhibits, qualifications, prior testimony and compensation. Many state courts ask for something similar, so the federal list is a sound default.

The text of [Federal Rule of Civil Procedure 26 at Cornell's Legal Information Institute](https://www.law.cornell.edu/rules/frcp/rule_26) requires:

- a complete statement of all opinions and the basis and reasons for them;
- the facts or data the witness considered in forming them;
- any exhibits used to summarize or support them;
- the witness's qualifications, including publications from the previous 10 years;
- other cases in which the witness testified as an expert at trial or by deposition in the previous 4 years;
- a statement of the compensation for the study and testimony.

Note the word "considered" in the second item. It covers records the expert looked at and set aside, not just the records that support the opinion. A report that lists only helpful sources invites the question of what else was reviewed.

The same rule protects drafts of the report and most communications between the expert and the retaining lawyer, with exceptions for compensation, for facts or data the lawyer supplied that the expert considered, and for assumptions the lawyer supplied that the expert relied on. Treat any assumption from counsel as something that will be disclosed, and state it in the report.

## The assignment section of a forensic expert report

The assignment section states who retained the expert, the question the expert was asked to answer and any assumptions the expert was told to make. It sets the boundary for everything after it. A precise assignment protects the report, because opinions outside it can be challenged as beyond what the expert was asked to do.

A good assignment section is short:

- **Retained by:** counsel for the plaintiff, with the date of the engagement.
- **Question:** for example, "Determine the amount of company funds paid to accounts controlled by the former controller between January 2022 and March 2025."
- **Assumptions:** for example, "Counsel has instructed me to assume that payments to Example Consulting LLC were not authorized." State each assumption separately so the reader can see which conclusions depend on it.
- **Limits:** what the expert was not asked to do, such as interview witnesses or reach a view on intent.

Intent is worth a word of its own. A forensic accountant can show that money moved, when, and to whom. Whether the person meant to steal is a question for the fact-finder. Reports that stray into intent give the other side an easy target.

## Listing the bank records a forensic expert report relied on

The records section identifies every source the expert considered, precisely enough that someone else could pull the same documents. For bank records, that means the bank, the account, the date range, the production or Bates number and any gaps. A vague line such as "bank statements produced in discovery" is not enough.

A useful layout is a table in an appendix:

| Bank | Account | Period | Bates range | Gaps or notes |
| --- | --- | --- | --- | --- |
| Example Bank | Operating checking ending 4401 | Jan 2022 to Mar 2025 | PL-000412 to PL-001108 | None |
| Example Bank | Payroll checking ending 4419 | Jan 2022 to Mar 2025 | PL-001109 to PL-001530 | Aug 2023 statement not produced |
| Second Example Credit Union | Personal savings ending 0078 | Jun 2022 to Mar 2025 | SUB-000001 to SUB-000214 | Obtained by subpoena |

Name the gaps. If a month is missing, say so and explain how the analysis handled it: excluded, bridged from opening and closing balances, or requested and not received. Silence about a gap looks like an oversight, and an oversight is easy to cross-examine.

The expert should also confirm that each statement used is complete. Footing each statement, so that opening balance plus deposits less withdrawals equals the closing balance, is a simple test that can catch missing pages and altered documents. [PreciseBankFlow](/get-started) runs that test on every statement and produces a list of exceptions that can sit in the workpapers behind this section.

## Which methods should a forensic accountant expert report explain?

The report should explain every method well enough that another qualified accountant could apply it to the same records and reach the same figures. Federal Rule of Evidence 702 asks whether testimony rests on sufficient facts, reliable methods and a reliable application of those methods to the case. The methods section is where the report answers that.

The text of [Federal Rule of Evidence 702 at Cornell's Legal Information Institute](https://www.law.cornell.edu/rules/fre/rule_702) asks the proponent to show it is more likely than not that the testimony is based on sufficient facts or data, is the product of reliable principles and methods, and reflects a reliable application of them to the facts.

For bank-records work, methods commonly explained include:

- **How transactions were captured** from the statements, and how the capture was checked for completeness.
- **How transfers between accounts were identified,** so the same money was not counted twice.
- **How payees were grouped,** for example by normalizing variant spellings of the same vendor.
- **Which tracing convention was used** where funds were mixed. When disputed money passed through an account that also held other funds, the report must say how withdrawals were allocated. The [lowest intermediate balance rule, with a daily balance example](/blog/lowest-intermediate-balance-rule), is one convention courts accept, and the report should name the one it used.
- **How judgment calls were made,** with the rule applied to each category of uncertain transaction.

Describe what was done, not what software was used. A tool may speed the work, but the reliability question is about the method and its checks.

## Findings and summary exhibits built from bank records

Findings are best stated as short, numbered opinions, each followed by the schedule that supports it. In bank-records cases the schedules are usually summary exhibits: tables or charts that total hundreds or thousands of transactions. Each total should tie to a detailed listing, and each listed line to a statement page.

Summaries of voluminous records have their own rule. [Federal Rule of Evidence 1006 at Cornell's Legal Information Institute](https://www.law.cornell.edu/rules/fre/rule_1006) lets a court admit a summary, chart or calculation to prove the content of voluminous writings that cannot be conveniently examined in court, and requires the proponent to make the underlying originals or duplicates available to the other parties. Build every exhibit on the assumption that the other side will check it against the originals.

### An example report outline

The outline below is an example for an embezzlement case built on bank records.

| Report section | What it contains | Supporting exhibits |
| --- | --- | --- |
| 1. Assignment | Retaining party, question, assumptions, limits | Engagement letter |
| 2. Qualifications | Credentials, experience, prior testimony, fees | CV, testimony list |
| 3. Summary of opinions | Three numbered opinions in plain language | None |
| 4. Records considered | Every account, period, Bates range and gap | Appendix A table |
| 5. Methods | Capture, completeness checks, transfers, tracing convention | Appendix B |
| 6. Opinion 1: payments to related accounts | Total by year and by payee | Exhibit 1 summary, Exhibit 1A line listing |
| 7. Opinion 2: false vendor payments | Payments with no matching goods or services | Exhibit 2 summary, 2A listing |
| 8. Opinion 3: total loss | Opinions 1 and 2 less any repayments found | Exhibit 3 roll-forward |
| 9. Signature | Date and signature | None |

Keep one opinion per section. When an opponent attacks one, the others stand on their own.

## How does an opposing expert attack a forensic report?

An opposing expert usually attacks a forensic report at its joints: records that were missing or unverified, methods that were not explained, assumptions that were not stated, and figures that do not tie from summary to detail. Closing those gaps before service is cheaper than explaining them in a deposition.

Check the report against these before it goes out:

- **Totals that do not tie.** Every summary number should equal the sum of its listing, and every listed line should match a statement page.
- **Counted twice.** A transfer between two accounts appearing as a payment out of both.
- **Unstated assumptions.** An opinion that silently treats every payment to a vendor as improper.
- **Ignored contrary data.** Repayments or authorizations in the records that the report does not mention.
- **Selective periods.** A date range that starts or stops where it flatters the result, with no reason given.

A challenge to the expert's admissibility, rather than the weight of the evidence, is its own process with its own standard. [A Daubert challenge to a forensic accountant, and what survives it](/blog/daubert-challenge-to-a-forensic-accountant) covers that.

## Forensic accountant reports for insurers and arbitrators

Outside a courtroom, the structure stays mostly the same but the audience changes. An insurer reviewing a crime or employee dishonesty claim wants a proof of loss that follows the policy's terms. An arbitrator may prefer a shorter report with the detail in appendices. The core of sources, methods, findings and exhibits does not change.

For an insurance claim, the report should frame the loss in the policy's language: the covered period, the covered employees and any deductible. [Proving an employee theft insurance claim](/blog/employee-theft-insurance-claim) explains what a proof of loss usually needs, and the same exhibits from the bank-records analysis can support it.

Retail and hospitality losses add one more source. When cash was taken before it reached the bank, the report has to compare what the point-of-sale system recorded with what was deposited, day by day. [Daily sales reconciliation from POS to bank](/blog/daily-sales-reconciliation) shows that comparison, and a run of short deposits against recorded sales is often the clearest exhibit in a skimming case.