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Value-added tax (VAT) remains one of the most important sources of public revenue in Europe. The Organisation for Economic Co-operation and Development (OECD) and European Commission publications both underscore the central role of VAT and other consumption taxes in financing public services and supporting fiscal stability across EU economies.
At the same time, governments are under growing pressure to fund digital transformation, demographic needs, and long-term economic resilience. In that context, the efficiency of VAT collection is no longer just a tax administration issue – it is a broader public finance concern.
The VAT Gap Is More Than a Compliance Problem
According to the European Commission’s 2025 VAT Gap Report (based on 2023 data), the EU VAT compliance gap reached €128 billion in 2023, equal to 9.5% of total VAT liability. The Tax Foundation also highlights that this marked a sharp increase from €101 billion in 2022, pointing to a reversal after earlier improvement.
The gap is often framed as a fraud problem, but the reality is wider. The European Commission notes that VAT losses can stem not only from evasion and avoidance, but also from bankruptcies, insolvencies, administrative weaknesses, and broader tax administration performance.
In other words, the VAT gap is not simply a measure of taxpayer behaviour. It is also a measure of how well the system itself is designed and managed.
An Uneven Challenge Across Europe
The burden is not spread evenly. Tax Foundation analysis shows that 75% of the EU VAT compliance gap is concentrated in six countries: France, Germany, Italy, Poland, Romania, and Spain. It also identifies some of the highest relative compliance gaps in Romania, Malta, Poland, Lithuania, and Italy.
This uneven picture matters for policymakers. It shows that while VAT gap reduction is a shared European priority, solutions cannot be entirely uniform. Administrative capacity, economic structure, and the maturity of digital systems differ significantly from one country to another.
The Bigger Issue: Policy Design
One of the most important insights in the current debate is that compliance is only one part of the story. The European Commission’s VAT Gap work also points to a large policy gap, driven by reduced rates, exemptions, and other structural features of VAT systems. The Tax Foundation estimates that the EU VAT policy gap is far larger than the compliance gap, reaching €773.5 billion.
This distinction is consistent with the International Monetary Fund’s (IMF) Revenue Administration Gap Analysis Program (RA-GAP), which separates losses caused by non-compliance from losses created by tax policy design. That is a crucial point: stronger enforcement can help, but it will not fully close revenue losses if the system itself remains complex and fragmented.
For governments, the question is therefore broader than how to improve compliance. It is also how to simplify VAT frameworks and make them more resilient.
Why Digitalisation Matters
This is where digital transformation becomes especially important. The European Commission’s VAT in the Digital Age (ViDA) initiative is designed to modernise the EU VAT system, improve reporting, reduce administrative burdens, and make the system more resilient to fraud.
International organisations point in the same direction. The OECD argues that digital transformation can make tax systems less burdensome and more embedded in the software and devices taxpayers already use. The World Bank likewise stresses that stronger information systems and better use of data are essential for modern tax and customs administrations.
Several priorities stand out:
- Compliance by design – embedding tax logic directly into systems and processes.
- Better use of data – enabling more accurate risk detection and smarter audits.
- Real-time reporting and e-invoicing – reducing delays, errors, and opportunities for fraud.
- Cross-border visibility – improving cooperation across the single market.
The EU’s Central Electronic System of Payment (CESOP) framework adds another layer to this shift by enabling Member States to use cross-border payment data to tackle VAT fraud in e-commerce more effectively.
What This Means for Governments
Closing the VAT gap requires more than tighter controls. It requires a combination of better policy design, stronger digital infrastructure, and more integrated tax administration. European Commission, OECD, IMF, and World Bank publications all point toward the same conclusion: resilient tax systems increasingly depend on digital maturity.
The future of VAT is not just about collecting more revenue. It is about collecting it more intelligently. Europe’s experience shows that reducing the VAT gap requires a shift from reactive enforcement to system transformation – combining policy simplification, digital tools, and institutional coordination.
Countries that align these elements successfully will not only improve revenue performance. They will also build more transparent, efficient, and trusted public finance systems.
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