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There is no single new EU-wide tax on U.S. technology companies. The practical task is to check several separate rules: the EU’s 15% global minimum tax for large groups, national digital-services taxes, tax reporting requirements, and VAT rules that may apply to particular platform transactions. Start by mapping the group’s entities, revenue and activities by country; then test each rule against those facts and confirm the result with local tax advisers.
Which European rules should a U.S. technology company check?
The rules differ in what they tax and whom they reach. Some are taxes; others require companies to report information. The EU’s minimum-tax directive has applied since 2024, while national digital-services taxes (DSTs) depend on the country and the services involved. Separate VAT amendments apply to specified transactions. The EU’s 2018 proposal for a common digital-services tax is on hold; it is not an enacted EU-wide DST, according to the Council of the EU’s digital taxation overview.
| Rule or measure | What to establish | Status and key qualification |
|---|---|---|
| Pillar Two minimum tax | Whether the group meets the revenue and EU-presence scope test, and whether a jurisdictional effective tax rate could produce a top-up tax | EU implementation is in force from 2024; the European Commission describes a 15% minimum effective tax rate for in-scope groups. Commission overview |
| U.S. side-by-side arrangement | Whether a U.S.-headquartered group qualifies for and should make the safe-harbor election, and which local obligations remain | Treasury announced the agreement on January 5, 2026, and described an election mechanism in a revised return announced September 11, 2026. It does not establish that every European tax or filing is eliminated. January announcement; September announcement |
| National digital-services taxes | Whether the group’s revenue categories and activity meet each country’s current tax base, thresholds and other conditions | Country-level rules; a 2025 European Parliamentary Research Service briefing is a dated snapshot, not a current compliance table. EPRS briefing |
| Tax information reporting | Which group entity files, what information is required, and how local authorities exchange it | The Council describes DAC9 as establishing a unified filing form for Pillar Two obligations and improving information exchange. The Commission’s June 2026 DAC recast is a proposal, not an enacted change. Council overview; Commission proposal |
| VAT in the Digital Age | Whether the company acts as an electronic interface in transaction types covered by the directive | The directive is enacted, but specified amendments—not the whole directive—are due to apply from January 1, 2027. Directive (EU) 2025/516 |
Does Pillar Two apply to my company?
The European Commission’s summary says the EU rules cover large domestic or multinational groups with more than €750 million in combined annual financial revenue and an EU presence. The threshold is not a test of a technology company’s European sales alone. A group should first identify its ultimate parent and constituent entities, including permanent establishments, and then verify the applicable scope rules and any exclusions or safe harbours with qualified advisers. The Commission’s Pillar Two overview notes that qualifying safe harbours can simplify calculations and may reduce a jurisdiction’s top-up tax to zero, but eligibility is technical.
For an in-scope group, the effective tax rate is assessed by jurisdiction. If a jurisdiction’s rate is below 15%, a top-up tax may apply through the income inclusion rule (IIR), the undertaxed profits rule (UTPR), or a qualified domestic minimum top-up tax. That is why a group-wide average tax rate is not enough to assess exposure: the company needs reliable income and covered-tax data for each relevant jurisdiction. The Commission describes the threshold and rate in its minimum-tax overview.
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Will the U.S. side-by-side deal protect us from EU tax?
It may change how a qualifying U.S.-headquartered group is treated under Pillar Two, but do not treat it as blanket immunity from European tax. On January 5, 2026, the U.S. Treasury announced a side-by-side agreement with more than 145 Inclusive Framework jurisdictions. Treasury described the agreement as recognizing U.S. tax sovereignty over U.S. companies’ worldwide operations while preserving other countries’ authority over activity within their borders. That is Treasury’s characterization of the agreement, not a conclusion that local tax obligations disappear. Treasury’s announcement
In a September 11, 2026 announcement, Treasury said a revised GloBE Information Return provides a mechanism for a U.S.-headquartered group to elect the safe harbor from the Pillar Two IIR and UTPR. Treasury also said the return serves local minimum-tax reporting. The group should therefore ask U.S. tax counsel whether it qualifies and should elect, what the election covers, and which local minimum-tax, information-return and exchange-of-information obligations still apply. Confirm the requirements and local implementation rather than assuming that the agreement has the same effect in every country. Treasury’s revised-return announcement
Which countries have a digital-services tax?
DST exposure is a country-by-country question, not a single EU-wide threshold or rate. A 2025 European Parliamentary Research Service briefing reported 3% DSTs in France, Italy and Spain, a €750 million global-revenue threshold, and differing domestic thresholds; it also reported that Italy’s domestic threshold had been lowered to zero in 2025. Those details describe the briefing’s 2025 snapshot, not a verified statement of each country’s law as of October 2026. Do not use them as a current filing guide. EPRS briefing
For each market where the group operates, verify current local law and test the company’s actual revenue and services against it. In particular, inventory receipts from online advertising, user data and digital platforms, then confirm the applicable tax base, thresholds, registration requirements and filing dates with a local adviser. The available 2025 EPRS figures do not establish a complete, current country-by-country position.
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What does the company need to report?
Tax exposure is not only about the amount owed. Reporting duties can apply even when an election or safe harbour changes the top-up-tax result. The Council says DAC9 establishes a unified filing form for Pillar Two obligations and improves tax-authority information exchange. Map which group entity is responsible for filing, what information it must provide, and how the reporting connects to local requirements. Council overview
The European Commission adopted a tax simplification package as proposals on June 24, 2026, including proposed reporting changes under a DAC recast. The proposals were submitted for Parliament consultation and Council adoption; they are not yet enacted rules. The Commission estimated €7.9 billion in compliance-cost savings, but that is a projection for the proposed package, not savings companies have already received. Track the legislative status before changing reporting processes. Commission proposal and estimate
Could VAT changes apply to our platform?
VAT is separate from corporate minimum tax and DSTs. A technology company should assess its role in the transaction—not just its label as a “platform.” The VAT in the Digital Age directive includes deemed-supplier treatment for specified transactions involving electronic interfaces. Whether that matters depends on the platform’s function and the transaction pattern; it does not automatically cover every technology company or digital service. The directive lists January 1, 2027, as the effective date for specified amendments. Review the relevant provisions and national implementation for the company’s business model. Directive (EU) 2025/516
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should a company do now?
- Map the group and its footprint. Record the ultimate parent, constituent entities, permanent establishments, and countries where the group operates or its platforms facilitate transactions.
- Screen for Pillar Two scope. Compare consolidated annual financial revenue with the €750 million threshold and confirm EU presence, applicable exclusions and safe harbours. The threshold is the Commission’s summary of the EU rules, not a substitute for applying the detailed legal tests. Commission overview
- Assemble jurisdiction-level tax data. Prepare the income and covered-tax information needed to assess the effective tax rate and potential top-up tax by jurisdiction.
- Review the U.S. election with counsel. Ask whether the group can and should make the side-by-side safe-harbor election, and identify any local minimum-tax reporting or other obligations that remain. Check current requirements and local recognition. Treasury announcement
- Test DST exposure market by market. Separate online advertising, user-data and platform revenue, and have local advisers verify each country’s current tax base, thresholds, registration rules and due dates.
- Build a reporting calendar and monitor proposals. Confirm the group’s Pillar Two and DAC9 reporting responsibilities; distinguish requirements already in force from the Commission’s proposed DAC changes. Council overview; Commission proposal
- Review platform transaction flows for VAT. Determine whether the company is an electronic interface in transactions covered by the directive’s specified provisions, including amendments scheduled from 2027. Directive (EU) 2025/516
- Validate country positions before acting. Have local advisers review the facts and current law before making an accrual, filing, restructuring or pricing decision.
What a company-specific assessment still depends on
No general summary can determine a particular company’s liability, return dates or best structure. Those conclusions depend on the group’s entities and revenue, jurisdiction-level income and covered taxes, the services it sells, its role in platform transactions, and the countries where it operates. The U.S. announcements describe the agreement and Treasury’s reporting mechanism; a company still needs to confirm its own eligibility and each relevant country’s implementation.
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