Accounting fraud case studies: Wirecard, Enron and Steinhoff, and the warning signs in the published reports

What you will learn

• The core mechanism of each fraud and where the fictitious numbers were placed.
• Which warning signs were visible in the published reports before the collapse.
• Three repeatable checks: cash-and-interest, receivables and related parties.
• Why a clean audit opinion cannot be relied on blindly.

Explanation

This lesson shows how the red flags from earlier lessons combined in three real cases, summarised from public court, regulator and investigation records.

Enron (United States, 2001)

Enron, an energy-trading company, used special purpose entities (SPEs, separate legal vehicles) to move debt and loss-making assets off its balance sheet. Under the rule of the time, an SPE stayed off the books if outside investors held at least 3% of its equity; several Enron vehicles met this only with capital backed by Enron shares, and some were run by Enron's own chief financial officer. It also applied mark-to-market accounting to long-term contracts, booking estimated future profits immediately. In late 2001 it announced an equity reduction of about $1.2 billion, restated 1997 to 2000 and filed for bankruptcy; its auditor, Arthur Andersen, collapsed afterwards. Visible warnings: profits rising while operating cash flow was weak and volatile, and dense related-party notes on partnerships managed by a senior officer. The Sarbanes-Oxley Act of 2002 followed, with CEO/CFO certification and the audit regulator PCAOB.

Wirecard (Germany, 2020)

Wirecard, a DAX payment processor, reported much of its profit from "third-party acquiring" partners in Asia, with the cash supposedly held in escrow (trustee) accounts. In June 2020 the auditor, EY, refused to sign the 2019 accounts because it could not confirm about €1.9 billion of such balances; the company admitted the money probably did not exist and filed for insolvency within days. Visible warnings: press reports of irregularities from early 2019; a KPMG special audit (April 2020) that could not verify the third-party revenue; heavy borrowing next to large cash balances earning little interest. Germany then tightened audit and enforcement rules (FISG, 2021).

Steinhoff (South Africa and Germany, 2017)

Steinhoff, a retail group with a Frankfurt listing, announced in December 2017 that its auditor, Deloitte, would not sign the accounts. A PwC forensic investigation, summarised in March 2019, found fictitious or irregular transactions of about €6.5 billion over the 2009 to 2017 financial years: income booked against entities presented as independent but controlled by insiders, unpaid receivables reclassified as cash equivalents, property, trademarks or goodwill, and backdated documents. Visible warnings: acquisition-driven growth with rising goodwill and intangibles, a complex multi-jurisdiction structure, and a German tax investigation of a subsidiary reported in 2015.

Three checks follow. The cash-and-interest test: interest income divided by average cash should be close to deposit rates; cash earning almost nothing while the company borrows expensively may be unreal or restricted. The receivables test: receivables growing far faster than revenue, especially from few counterparties, point to income not being paid. The related-party test: look for entities controlled by management or "independent" parties recurring across transactions. All three companies had clean audit opinions for years.

Worked example

Hypothetical example, all figures invented.

A payments company reports cash €1,900 million, interest income €4 million, borrowings €1,400 million at 3%, revenue €3,450 million (prior year €3,000 million), trade receivables €780 million (prior year €410 million).

1. Cash-and-interest test. Yield on cash = 4 ÷ 1,900 = 0.2%. At an assumed deposit rate of 2%, expected interest = 1,900 × 2% = €38 million. Interest cost ≈ 1,400 × 3% = €42 million. The company pays €42 million to borrow while holding cash that earns €4 million. Question: where is the cash, who holds it, is it restricted?
2. Receivables test. Revenue growth = 3,450 ÷ 3,000 − 1 = 15%; receivables growth = 780 ÷ 410 − 1 = 90%. Days sales outstanding (DSO) = receivables ÷ revenue × 365: 410 ÷ 3,000 × 365 ≈ 50 days last year, 780 ÷ 3,450 × 365 ≈ 83 days this year. Customers take 33 more days to pay, or some do not pay at all.
3. Related-party test. 60% of the receivables growth comes from three "partners" whose owners are not named. That is the finding.

None of this proves fraud; each is a question the company must answer. Fees, taxes and share prices are excluded.

Common mistake

Practice activity

Match each hypothetical observation to the case it most resembles (Enron, Wirecard or Steinhoff), name the test that would catch it, and state one follow-up question.

1. A retail group's goodwill and trademarks grew from €2 billion to €9 billion in six years through acquisitions; a note mentions royalties from an entity described as independent.
2. Record profit, but operating cash flow negative in three of the last four years, and a related-party note describing partnerships managed by an executive officer.
3. €2 billion of cash held with partners abroad, interest income of €3 million, and a bond outstanding at a 4% coupon.

Key takeaways

• Enron hid debt in off-balance-sheet vehicles; Wirecard reported cash that did not exist; Steinhoff booked income from entities it secretly controlled.
• Public reports showed warning signs in all three: weak cash flow against strong profit, cheap cash next to expensive debt, receivables and intangibles outgrowing the business.
• Run the cash-and-interest, receivables and related-party tests on every report; a clean audit opinion lowers risk but never removes it.

Next step

The final lesson combines everything into an annual-report reading checklist and a one-page red-flag scorecard that you apply to a real report.