The European Union is pulling back the curtain on corporate tax practices. Under a directive that’s been years in the making, large multinational enterprises operating in the bloc will be required to publish detailed tax and financial information for each country where they do business.

Who’s affected and what they have to disclose

The Public Country-by-Country Reporting Directive, formally known as Directive (EU) 2021/2101, applies to multinational enterprises with consolidated global revenues exceeding €750 million in each of the last two consecutive financial years. That threshold captures a significant chunk of the world’s largest corporations, whether they’re headquartered in the EU or simply operate there at scale.

The required disclosures are granular. Companies must report a description of their activities, the number of full-time employees, net turnover, pre-tax profit or loss, taxes accrued, taxes actually paid, and accumulated earnings. All of this must be specified for each EU member state individually, plus any jurisdictions on the EU’s list of non-cooperative tax havens.

Banking groups are carved out from the rules entirely. They already face similar disclosure requirements under the Capital Requirements Directive, so the EU decided not to double up on reporting obligations.

The timeline is moving faster than you think

The directive entered into force on 21 December 2021, and EU member states had until 22 June 2023 to transpose it into national law. The first reporting period covers financial years commencing on or after 22 June 2024. For the majority of multinationals that follow a calendar-year fiscal schedule, that means their 2025 financial year will be the first one subject to public reporting.

The actual publications are expected to land by late 2026. Some countries have already seen early submissions. Romania, for instance, has received filings ahead of the broader rollout.

On the technical side, the EU published Implementing Regulation (EU) 2024/2952 on 2 December 2024, which lays out the common template and mandates electronic formats using XBRL and iXBRL standards. Those acronyms stand for eXtensible Business Reporting Language, a machine-readable format that ensures the data can be aggregated, compared, and analyzed at scale.

The backstory: why this exists

The directive didn’t materialize out of thin air. The European Commission first proposed public country-by-country reporting in 2016, and it took five years of negotiation before the directive was formally adopted. The compromise landed on the €750 million revenue threshold, which mirrors the one used in the OECD’s Base Erosion and Profit Shifting framework. That framework already requires private reporting to tax authorities, but the EU directive goes further by making the information public.

What this means for investors

One notable gap: the directive contains no provisions related to cryptocurrency or digital asset activities. As the digital asset industry continues to grow within Europe, particularly under the MiCA regulatory framework, the absence of crypto-specific reporting requirements could become a point of debate in future legislative revisions.