Startup Due Diligence: Financial Fraud Risks & Controls

Fraud in startups is not a rare occurrence. It often arises not from malicious intent, but from a lack of structures that make misconduct possible in the first place. Startup due diligence, in particular, reveals whether financial processes, reporting, payment approvals, and compliance controls are robust enough to support investor confidence and scalable growth. In this article, we’ll show how typical fraud risks arise, which control mechanisms are truly effective, what role financial statement fraud plays, and what founders and CFOs can do better from the very beginning.

Note: This post summarizes key insights from an episode of the torq.partners Finance Podcast. For in-depth support in building scalable finance and compliance processes, we’re here to help with our Interim CFO and Fractional CFO services.

Why Startups Are Particularly Vulnerable to Fraud

The biggest advantage of startups—their dynamism—is also their greatest compliance risk. In a phase where everything has to move quickly, back-office processes are initially kept lean or omitted entirely. This is understandable, but it comes at a price: Without clear processes, there is no oversight. And without oversight, loopholes arise that can be exploited, either intentionally or unintentionally. Another factor is trust. In small teams, people know each other; the first employees are often there from the very beginning. This trust is valuable; however, it does not relieve anyone of the obligation to implement at least basic control mechanisms. Even long-standing, trustworthy employees should never have unmonitored access to payment processes.

That is precisely why startup risk management should not be seen as a sign of mistrust, but rather as a safeguard for growth, quality decision-making, and investor confidence. When it comes to compliance in startups, the key is to create simple structures that grow along with the company.

The dual-control principle: the simplest and most effective first step

The most effective basic rule in fraud prevention is the separation of posting and payment. The person who enters an invoice into the accounting system should not be the same person who initiates the payment. This single measure eliminates a large portion of the typical fraud risks in payment transactions. The dual-control principle means that at least two people are involved in critical financial processes: one person for posting or verifying entries, and a second person for authorizing payments. This principle can be implemented even in small teams. An email approval from a second person is a good place to start. It is important that every payment goes through at least two people: one who posts the entry and one who authorizes it.

As the company grows, spending limits and multi-level approval processes can be implemented. Such simple control mechanisms are a central component of startup risk management and also help with financial statement fraud detection, as they make cash flows and responsibilities more traceable. Random spot checks are another underrated tool. When a CEO or CFO regularly reviews account activity, they create an additional layer of oversight while signaling that transparency is expected.

Common Weaknesses in Invoice Verification and Payment Approval

Without structured processes, invoices end up in the accounting department unchecked. Common problems include invoices without a tax ID number, a lack of approval of the invoice contents by the person who placed the order, or no documentation of who ordered what. The risk is particularly high in the early stages, when an ordering system has not yet been established. Fake invoices and tampered bank account details are other real risks. Letters that look like official government correspondence and demand payment, or supplier invoices with altered IBANs, are not uncommon in the day-to-day operations of a startup. Missing receipts, unclear responsibility for orders, or undocumented approvals are also typical examples of financial statement fraud and operational fraud risks in startups. A well-implemented spend management tool with an integrated approval process and duplicate detection significantly reduces this risk.

Financial Statement Fraud: When the Numbers Look Too Good to Be True

In addition to traditional payment fraud, there is a more subtle form of fraud: the unconscious or deliberate embellishment of key metrics. Financial statement fraud occurs when financial figures, KPIs, or reports present a distorted picture of economic reality. This can happen particularly quickly in startups because growth pressure, fundraising goals, and optimistic forecasts are closely intertwined. Founders understandably want to present their companies in the best possible light. This can lead to revenue being reported for which no contract yet exists, or to costs not being fully recorded in the books.

Typical examples of financial statement fraud in startups include recognizing revenue without a signed contract, failing to record expenses, retroactive adjustments to financial statements, inflated KPIs, or presenting expected revenue as already secured revenue. The relevant types of financial statement fraud thus primarily include overstatement of revenue, understatement of expenses, and unexplained adjustments to financial statements. Typical warning signs include retroactive changes to financial statements, missing supporting documentation for expenses, and a discrepancy between the narrative presented and verifiable figures. Unclear revenue recognition, unusual account activity, or unexplained changes in figures can also be red flags. Such inconsistencies come to light during due diligence or a funding round at the latest and can permanently damage investor confidence. A transparent presentation with clear labels—such as “Revenue at Risk” for expected but not yet signed contracts—is more credible in the long run than an optimistically distorted picture.

Banking and Internationalization: Underestimated Compliance Risks

Compliance risks also arise when choosing a bank and expanding internationally—risks that many startups underestimate. Neobanks are quick to set up and intuitive to use, but they don’t always offer the features necessary for compliance and accounting. Some providers lack batch postings, ERP interfaces, or multi-step payment approvals. This can quickly become problematic, especially for compliance in startups, if payment approvals, reporting, and accounting do not work together seamlessly. When transactions cannot be clearly traced or interfaces are missing, the risk of manual errors, incomplete entries, and a lack of transparency increases.

When expanding internationally, local tax and legal regulations come into play, which can differ significantly from German standards. In this context, it is advisable to collaborate with local tax and legal advisors in the respective market at an early stage, before rolling out the business model there. Before expanding internationally, startups should therefore review, in particular, banking functionalities, ERP integrations, payment approvals, accounting processes, local tax obligations, and legal regulations.

What Founders and CFOs Should Be Doing Now

Founders and CFOs should consistently separate bookkeeping and payments and implement the dual-control principle from the very beginning. They should also set approval limits in online banking, regularly monitor account activity, and implement a spend management tool as soon as the volume warrants it. In the long run, this saves more than it costs.

Reporting processes should be designed so that figures are traceable, substantiated, and consistent. Projected revenue should be clearly distinguished from signed contracts, costs should be fully recorded, and changes should be documented in a traceable manner. This creates a solid foundation for financial statement fraud detection, startup due diligence, and future funding rounds.

If there are family ties or very close personal relationships between employees and external service providers, such as auditors or tax advisors, you should take a closer look.

Where torq.partners Comes In

torq.partners supports startups and scaleups in building robust financial structures—from implementing scalable accounting processes and establishing compliance frameworks to providing support during audits, fundraisings, and due diligence processes. As interim CFOs or interim accounting partners, we help identify risks early on and build structures that grow alongside the company.

These include, among other things, streamlined payment approvals, clear reporting processes, the establishment of accounting processes, finance operations, compliance-oriented setups, and preparation for startup due diligence. Companies looking to professionalize their finance, reporting, and compliance processes can establish the right structures early on with the help of a fractional CFO or interim CFO.