The European Commission’s Indicative Audit Programme (IAP) is a key reference document for financial audits under EU funding programmes. While it is primarily written for auditors, it also provides beneficiaries and grant managers with a clear view of how EU project costs are assessed and approved in practice.

For beneficiaries, it is more than just a technical document – it can be used as a practical preparation tool to strengthen internal controls and align financial management practices with European Commission expectations.

So what exactly is inside the IAP?

1. Audit preparation – getting the foundation right

The IAP begins with a strong focus on the preparation phase. Before any detailed testing starts, auditors gather and review key information to understand the project and its financial structure. This includes the Grant Agreement, accounting records, financial statements, and any previous audit findings or certificates. Auditors also identify the key individuals responsible for project management and financial oversight to understand how responsibilities are distributed.

The purpose of this stage is to build a clear and structured understanding of the project, its funding flows, and its compliance context before fieldwork begins.

2. System checks and risk assessment

A significant part of the IAP focuses on evaluating how the beneficiary’s financial and control systems actually work in practice.

Auditors examine:

• Accounting systems and their ability to track project costs
• Internal controls and approval procedures
• Risk factors such as financial instability or weak governance
• The reliability of cost recording processes

Based on this, auditors perform a risk assessment to identify areas that may require closer attention during the audit. The assessed risk directly influences both the sampling approach and the depth and intensity of testing.

3. Audit approach and sampling method

Auditors do not review every single transaction in an EU project. Instead, they apply a sampling approach, selecting a smaller number of transactions for detailed testing.

The IAP commonly uses Monetary Unit Sampling (MUS), where higher-value transactions have a greater chance of being selected because they represent higher financial risk. In addition, costs are often divided into categories like personnel costs, travel, subcontracting or equipment following the rule that “at least one item from each budget category must be tested”.

In addition, auditors can deliberately pick some items they consider “risky” based on risk factors identified during the planning phase or based on their experience.

If errors are identified, especially repeated or systematic ones, auditors may expand the sample or perform additional testing.

4. Cost eligibility checks – the core of the audit

The most detailed section of the IAP focuses on verifying whether costs are eligible under EU rules.

Auditors first check whether each cost falls within an eligible category defined in the Grant Agreement, such as personnel, travel, subcontracting, other goods & services, or equipment. Next, they focus on supporting evidence, including invoices, contracts, timesheets, payroll records, or travel receipts. They also check whether the cost was necessary for the project and incurred during the eligible time period.  Finally, auditors verify the correct calculation and allocation to the project, ensuring that amounts are accurate and not double-funded.

If a cost does not meet all these conditions, it is considered ineligible, even if it was actually incurred.

5. On-site verification and supporting evidence

On-site visits are the stage where auditors move from paperwork to verifying how the project works in practice.

During the visit, auditors inspect the beneficiary’s financial and administrative systems, including how costs are recorded, approved, and stored. A key element is verification of original evidence and source documents.

Auditors also often conduct interviews with key staff involved in the project to understand how internal procedures are applied in practice, for example time recording system or procurement processes.

In some cases, auditors may also perform physical verification of equipment purchased for the project or check that subcontracted services were actually delivered.

6. Why does the IAP matter?

Despite being highly technical, the Indicative Audit Programme is more than just an auditor checklist. It provides a clear framework for how EU project costs are checked and validated. For beneficiaries, it’s a useful guide to be better prepared for the financial audit, avoid cost corrections, and keep financial processes in order.

In short: understanding how audits work makes compliance much easier.

If you want to improve your audit readiness, feel free to get in touch with experts at [email protected]