GDPR audit: the key steps to ensure your company is compliant

The General Data Protection Regulation (GDPR) is a European regulation created in 2016 to protect individuals' personal data. It is mandatory for companies, and those that fail to comply risk heavy penalties: fines can reach €20 million, or 4% of turnover. Yet many companies are still not in compliance with the law. What are the key steps to ensure your company is compliant?

What is a GDPR audit?

Since the GDPR came into force, all companies that collect or process personal data within the European Union have been subject to strict obligations. The GDPR audit plays a central role: it assesses a company's compliance with these legal requirements.

In practical terms, a GDPR audit is a structured process that aims to analyse the personal data processing carried out by the company. It is a full diagnosis of internal practices relating to the collection, storage, use, securing and deletion of data. The aim? To identify gaps with respect to the regulatory framework and to propose concrete corrective actions.

But beyond simple verification, the GDPR audit is also a strategic lever. It helps to strengthen the trust of customers, partners and employees by guaranteeing ethical and secure use of personal information.

The key steps to carry out an effective GDPR audit

Achieving compliance with the law requires a methodical approach that demands rigour, the involvement of teams and a good knowledge of the legal framework.

The first step is to map data processing. This means identifying all the personal data collected, the associated purposes, the departments concerned, and the internal and external flows. This mapping is the foundation of the audit, on which all subsequent analyses are based. The data collected must be relevant: for example, it is not necessarily necessary to ask for a social security number, or to know whether a person is married or not.

Next comes the compliance assessment stage. Here, you check whether the processing complies with the main principles of the GDPR: transparency, retention period, security, individuals' rights, and so on. This is also the time to compare actual practices with the legal obligations set in particular by the CNIL (the French data protection authority), which ensures that digital rights are respected in France.

The third step is to identify gaps and risks. This involves a detailed analysis of sensitive points: absence of a record of processing activities, lack of consent, insufficient security, or incomplete internal procedures.

Finally, an action plan is drawn up. It proposes concrete corrective measures, ranked by priority, and specifies who is responsible and the deadlines for implementation. This plan must be monitored over time and subject to regular reporting to ensure continuous improvement in compliance.

Which tools can help you succeed in a GDPR audit?

The starting point is often the record of processing activities, a key document required by the GDPR. It can be managed as an Excel spreadsheet in small organisations, but it is strongly recommended to use a specialist tool to centralise information, make updates easier and cross-reference data.

Platforms such as Data Legal Drive, OneTrust, Dipeeo and PrivIQ offer all-in-one solutions for managing GDPR compliance. They make it possible to create and maintain the record of processing activities, carry out impact assessments (PIAs), track data subjects' requests (access, rectification, erasure) and manage data breaches.

Another valuable tool is the PIA (Privacy Impact Assessment), which is mandatory for certain high-risk processing. The CNIL provides free software to help companies carry out these assessments step by step.

Audit grids or compliance checklists make it possible to verify the requirements of the GDPR point by point. They support internal interviews and make it easier to formulate recommendations. Some are provided directly by the CNIL, while others are built into the platforms mentioned above.

Finally, there are training tools which, in the form of e-learning, allow employees to train and raise their awareness so that the GDPR is properly applied and respected on a daily basis.

How much does a GDPR audit cost?

Naturally, the cost of a GDPR audit varies enormously depending on the size of the company and the complexity of the data to be processed. For a small business or a start-up, a basic GDPR audit carried out by an external firm can cost between €2,000 and €5,000. This type of assignment generally includes an analysis of the record of processing activities, priority recommendations and staff awareness-raising.

In the case of an SME or an organisation with more complex processing, the budget can range from €5,000 to €15,000, especially if the audit includes a PIA (privacy impact assessment), a technical security audit or multiple interviews with the departments concerned.

For large companies or international groups, costs can reach or even exceed €30,000, particularly in the case of multiple sites, subsidiaries or large-scale processing of sensitive data. These audits require a tailored approach, specialist tools and sometimes the involvement of an external DPO.

Training in data audit and management control

In the face of increasingly complex regulations, the rise of digital technology and the central role of data in strategic decisions, companies have a growing need for people who master audit tools, compliance requirements (in particular the GDPR) and performance management methods.

This dual skill set, at the crossroads of finance, law and digital, is now a differentiating factor for those who want to progress into high-value-added roles: internal auditor, management controller, risk manager or compliance consultant. Solid training in this field provides a global view of the challenges of management and data protection, while mastering the tools needed to audit, assess and recommend effective action plans.

EDC Paris Business School offers a leading programme for those who want to specialise in this field: the MSc Audit & Management Control. This career-oriented programme prepares students for careers in audit, internal control and risk management, integrating the challenges relating to data and compliance.

The School also offers several complementary programmes that provide an essential foundation of skills for understanding and supporting changes in the professional world: the MSc Corporate Finance to master the main economic and financial balances, the Master in Management to develop global expertise in strategic management, and the Bachelor in Management to lay the solid foundations of a career in business management, with a progressive, career-oriented approach.

Remember that effective GDPR compliance must involve all of the company's stakeholders, particularly those who handle data on a daily basis. Finally, remember to check that your subcontractors are also compliant. In this way, you will avoid financial penalties and, above all, strengthen your reputation and the trust of your customers.