The European Commission’s Directorate-General for Taxation and Customs Union (TAXUD) is stepping up its game with new rules designed to harmonize how EU Member States measure the size of their capital markets — and in doing so, determine their obligations under the FASTER Directive for withholding tax relief. This move is bound to stir interest among financial market operators, national tax authorities, and investors, as well as companies listed on regulated markets, since the stakes revolve around tax efficiencies and procedural burdens.
The new rules come in the form of a Commission Delegated Regulation published on January 16, 2026, which supplements Council Directive (EU) 2025/50, known as the FASTER Directive. This regulation was drafted within the European Commission’s Taxation and Customs Union (TAXUD) alongside technical input from the European Securities and Markets Authority (ESMA) following a public consultation held in mid-2025.
This Delegated Regulation is a binding normative text providing Regulatory Technical Standards (RTS) that set out precise, numerical methodologies for calculating market capitalisation and the relative market capitalisation ratio of each Member State. These calculations determine whether a country is exempt from mandatory withholding tax relief procedures under the Directive, targeting states with small and efficient capital markets. The regulation offers a detailed formula and data sourcing criteria — including reliance on the latest transaction prices in regulated EU markets as reported under MiFIR rules — and applies uniformly across all EU Member States.
Policy-wise, this RTS enforces an increase in EU-level regulatory precision and harmonization in capital market assessments, potentially limiting national discretion in these calculations. It supports transparency and uniformity by mandating use of the registered legal address of issuers and the Global Legal Entity Identifier framework for cross-country consistency. In doing so, it draws a clear line between larger markets subject to the full Directive and smaller, more efficient markets that qualify for exemptions, balancing regulatory burden against market realities.
Stakeholders impacted include national tax authorities, who must apply this standardized approach potentially changing their relief process burdens; EU listed companies, which might see changes in the withholding tax regime applied to dividends and interests; financial market operators, who must ensure transaction data quality and availability; and investors, who may experience shifts in tax withholding affecting returns. Benefits include clearer rules and possible exemptions easing administrative load for some countries, while costs arise in data collection and compliance efforts.
This delegated regulation represents the next step in implementing the FASTER Directive's broader reform objectives. As it’s directly applicable to all Member States without further transposition, national authorities will begin adapting their tax relief processes accordingly. Attention now turns to ESMA and national regulators to monitor implementation and possibly suggest further refinements, marking this as an ongoing regulatory evolution rather than a final destination.
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