--- title: "Global Minimum Corporate Tax: 15% Floor Explained" description: "The Global Minimum Corporate Tax ensures multinationals pay at least 15% in taxes globally, impacting international tax policies and economies." url: "https://modeldiplomat.com/learn/glossary/global-minimum-tax" --- [New](https://modeldiplomat.com/) # Model Diplomat Research Team · Last reviewed June 22, 2026 TL;DR - The Global Minimum Corporate Tax is an OECD-brokered rule ensuring large multinational groups pay an effective tax rate of at least 15 percent in every jurisdiction where they operate. - What revenue threshold triggers the Global Minimum Corporate Tax? - How does the top-up tax actually get collected? - How is the minimum tax different from Pillar One? - Why has U.S. participation been uncertain? [Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026 The Global Minimum Corporate Tax is an OECD-brokered rule ensuring large multinational groups pay an effective tax rate of at least 15 percent in every jurisdiction where they operate. Go beyond the definition ## Research Global Minimum Corporate Tax like a delegate Model Diplomat's AI drafts position papers, speeches, and country research with real sources — built for MUN and politics students. ## Timeline 1. 8 October 2021 The Global Minimum Corporate Tax is the centerpiece of Pillar Two of the OECD/G20 Inclusive Framework's Two-Pillar Solution to Address the Tax Challenges Ari… 2. 31 October 2021 The Global Minimum Corporate Tax is the centerpiece of Pillar Two of the OECD/G20 Inclusive Framework's Two-Pillar Solution to Address the Tax Challenges Ari… 3. 20 December 2021 Its legal architecture rests not on a single multilateral treaty but on a set of Model Global Anti-Base Erosion (GloBE) Rules, published by the OECD on , whi… 4. 14 December 2022 The European Union adopted Council Directive (EU) 2022/2523 on , requiring member states to apply the IIR for fiscal years from 31 December 2023 and the UTPR… 5. 31 December 2023 The European Union adopted Council Directive (EU) 2022/2523 on 14 December 2022, requiring member states to apply the IIR for fiscal years from and the UTPR… 6. 31 December 2024 The European Union adopted Council Directive (EU) 2022/2523 on 14 December 2022, requiring member states to apply the IIR for fiscal years from 31 December 2… ## Research it like a delegate Research on modeldiplomat.com ## Ask a follow-up about Global Minimum Corporate Tax Open a cited briefing in Model Diplomat search — timelines, positions, and sources you can use in committee or exam answers. [Start research on Global Minimum Corporate Tax](https://modeldiplomat.com/search?q=Explain%20Global%20Minimum%20Corporate%20Tax%20%E2%80%94%20key%20dates%2C%20actors%2C%20positions%2C%20and%20sources) Example In December 2022 the European Union adopted Council Directive 2022/2523, requiring all member states to apply the 15 percent Global Minimum Corporate Tax to large multinationals for fiscal years beginning on or after 31 December 2023. Keep learning ## Go deeper than the definition [Explore all Civil Service & Diplomatic Exams lessons](https://modeldiplomat.com/learn/civil-services)[Test yourself with a quiz](https://modeldiplomat.com/learn/glossary/quiz/civil-services) ## Take Global Minimum Corporate Tax beyond the glossary Ask the AI research engine built for diplomacy — get briefings, position papers, and speeches with sources you can cite in committee.