G7 endorses side-by-side global minimum tax

G7 finance ministers and central bank governors said on May 19 they welcomed the OECD/G20 Inclusive Framework’s Global Minimum Tax Side-by-Side Package, folding the tax accord into their communiqué from the Banff meeting in Canada. The ministers said implementation of the package would reinforce “certainty and stability,” promote growth, preserve tax sovereignty and protect tax bases against base erosion and profit shifting. The endorsement gives political backing from the Group of Seven to a compromise first outlined by G7 countries in June 2025 and formalized by the OECD in January 2026. The arrangement is aimed at keeping the Pillar Two global minimum tax architecture intact while allowing a parallel route for U.S.-parented groups. ### What exactly did the G7 endorse in Banff? The May 19 communiqué did not create a new tax regime. The G7 said it welcomed the OECD/G20 Inclusive Framework package and stressed implementation, rather than reopening the underlying political deal. The language in the communiqué tied the package to “certainty and stability,” a “level playing field,” and protection against base erosion and profit shifting. (g7.utoronto.ca) Canada’s June 28, 2025 G7 tax statement had already described the concept more directly. That statement said a “side-by-side system” would fully exclude U.S.-parented groups from the undertaxed profits rule, or UTPR, and the income inclusion rule, or IIR, in respect of both domestic and foreign profits. In exchange, the system would include commitments to address substantial risks to the level playing field or to anti-base-erosion goals. (g7.utoronto.ca) ### Why was a “side-by-side” system needed? The June 2025 G7 statement said the proposal responded to concerns raised by the United States about Pillar Two. Treasury’s statement at the time said the side-by-side system recognized the existing U.S. minimum tax framework and would provide a basis for coordinated coexistence rather than direct conflict between systems. The OECD said on January 5, 2026 that the Inclusive Framework had reached agreement on key elements of the package in December 2025. (canada.ca) The OECD later described the package as a way forward for the “co-ordinated operation of the global minimum tax,” underscoring that the goal was to preserve the broader project while accommodating U.S. demands. (home.treasury.gov) ### How does this fit with Pillar Two? Pillar Two is the OECD-led global minimum tax framework for large multinational groups. The side-by-side package does not scrap Pillar Two. Instead, OECD guidance released on January 5 introduced new safe harbors and administrative rules intended to let the standard Pillar Two system and the U.S. approach operate in parallel. (assets.kpmg.com) Ireland’s finance department said on January 5 that the package had been approved and adopted by members of the OECD/G20 Inclusive Framework. It said the documents delivered on the earlier G7 statement and subsequent G20 requests to produce a workable package. ### What does the package change for companies? The OECD package, as summarized by tax advisers and official materials, adds safe harbors and simplifications to compliance under Pillar Two. (pwc.com) PwC said the January 5 guidance introduced a Side-by-Side Safe Harbour for multinational enterprise groups that meet specified conditions, while EY said the package also extended the transitional country-by-country reporting safe harbor by one year and added other administrative guidance. (gov.ie) KPMG said the arrangement was intended to preserve coordinated operation of global minimum tax rules while reducing friction created by differences between U.S. rules and Pillar Two. That means companies still face compliance work, but under a framework meant to reduce the risk of overlapping top-up taxes across jurisdictions. (pwc.com) ### What happens next? The next step is domestic implementation. The G7 communiqué on May 19 pointed to the importance of putting the package into effect, and the OECD’s January 5 materials provide the technical basis for countries to adapt local rules, safe harbors and administrative procedures. The Inclusive Framework’s January 5 package is already public on the OECD side, and finance ministries now have to decide how quickly to translate it into national law or guidance. (assets.kpmg.com) For multinational groups, the immediate milestones are jurisdiction-by-jurisdiction rule changes and updated compliance instructions tied to the 2026 tax year. (gov.ie) (g7.utoronto.ca)