G7 endorses side-by-side tax package

G7 finance ministers and central bank governors endorsed the OECD/G20 Inclusive Framework’s Global Minimum Tax Side-by-Side Package at their Banff meeting on May 19, putting a politically sensitive tax file back into a joint communiqué even as the group sparred over trade and industrial policy. The ministers said the package should help secure “certainty and stability,” promote growth, ensure a level playing field, preserve tax sovereignty and protect tax bases against base erosion and profit shifting. The language appeared in the final communiqué released by Japan’s finance ministry after the meeting. The endorsement gives fresh political backing to a technical arrangement the OECD framework had already approved in January. ### What exactly did the G7 endorse in Banff? The May 19 communiqué said the G7 “welcome the OECD/G20 Inclusive Framework’s (IF) Global Minimum Tax Side-by-Side Package” and stressed the importance of implementation. The statement did not reopen the underlying bargain. It endorsed the package as the operative path for keeping the global minimum tax architecture moving across jurisdictions. The OECD/G20 Inclusive Framework had already agreed the package’s key elements on January 5, 2026. The OECD said at the time that the package was designed to chart a course for the “co-ordinated operation” of global minimum tax arrangements in a digitalised and globalised economy. ### Why is it called “side-by-side”? Ireland’s finance department said on January 5 that the package was built to allow “co-existence with the US tax system” while preserving the objectives of the global minimum tax. (mof.go.jp) That framing reflects the long-running dispute over how the OECD’s Pillar Two rules should interact with existing U.S. minimum-tax rules. A June 28, 2025 G7 statement had already outlined the political basis for that approach. (oecd.org) The U.S. Treasury said then that the proposed side-by-side solution would exempt U.S.-parented groups from the Income Inclusion Rule and Undertaxed Profits Rule in recognition of the existing U.S. minimum tax system. ### What problem is the package trying to solve for companies and governments? The G7 communiqué tied the package to “certainty and stability,” language that speaks to complaints from multinational groups and tax officials about overlapping rules, timing mismatches and the risk of double layers of top-up taxation. (gov.ie) The ministers also linked the package to a “level playing field” and protection against base erosion and profit shifting. (home.treasury.gov) The OECD package itself included new safe harbours and related administrative guidance, according to summaries from PwC, Grant Thornton and A&O Shearman. Those summaries said the package was intended to preserve the integrity of Pillar Two while easing practical operation, particularly for U.S.-headed groups that had been at the center of the dispute. ### Does this mean the global minimum tax fight is over? (mof.go.jp) The January 5 OECD agreement covered key elements of the package, not every political disagreement around corporate taxation. The G7’s Banff language backed implementation, but it did not announce a new treaty, a new rate or a final end to jurisdiction-by-jurisdiction disputes over application. (pwchk.com) The Banff endorsement instead showed that the tax file remained one area where the G7 could still produce common language. In the same communiqué, ministers also focused on global imbalances, non-market policies and support for Ukraine, underscoring how tax was only one part of a broader and more contested economic agenda. ### Who handles the next stage from here? The OECD/G20 Inclusive Framework remains the forum responsible for the package’s operation and follow-through. (oecd.org) The OECD published the package on January 5, and the G7 communiqué in Banff pointed to implementation rather than a fresh negotiation among finance ministers. The next concrete reference point is the Inclusive Framework’s continuing work on guidance and adoption across participating jurisdictions. (mof.go.jp) Tax departments and multinational groups will be watching how jurisdictions apply the safe harbours and related rules released with the January 5 package. (pwchk.com) (oecd.org)