Cross-border Tax Talks

Pillar Two SESHion: ‘Simplified’ safe harbour

Doug McHoney (PwC’s International Tax Services Global Leader) is joined by Steve Kohart, a New York City-based international tax partner at PwC and former advisor to the OECD’s Center for Tax Policy and Administration. Doug and Steve discuss the January side-by-side agreement’s implications for US-parented multinationals, why Pillar Two remains relevant through QDMTTs, and how the CBCR transitional safe harbor bridges to the permanent simplified ETR safe harbor. They unpack what ‘simplified’ really means: financial accounting standards, denominator and numerator adjustments, deferred tax ‘bad DTLs,’ and the practical reality of a third set of books. The conversation also covers JV complications, Chapter 6 M&A/reorg rules, transition provisions (9.1.1–9.1.3) and excess negative taxes, new flexibility for return-to-provision adjustments, integrity rules, and what guidance and compliance planning teams should prioritize next. 

• [00:06] Guest introduction, Mets payroll, Cardinals rebuilding 
• [03:20] The permanent simplified ETR safe harbor; Side-by-side agreement: certainty, carve-outs, and why Pillar Two continues for US MNCs 
• [04:43] QDMTTs as the continuing pressure point for U.S.-parented multinationals 
• [05:28] Enacted-law timing and the provision implications for qualified incentives 
• [06:10] CBCR transitional safe harbor extended one year; the 17% ETR test remains; ‘downpayment on simplification’: timing expectations for permanent safe harbor 
• [08:10] When would a taxpayer ever choose the permanent safe harbor over CBCR? (a book-loss scenario);Why it still matters for US groups 
• [09:30] Financial accounting standard: consolidated accounts vs local standards (and the push for choice) 
• [10:15] Simplified ETR mechanics: 15% test and the simplified income starting point; summary of adjustments; ‘simplified’? Third set of books 
• [13:20] Numerator: Simplified taxes: current + deferred starting point, adjustments; ‘bad DTLs’ and recasting deferred tax at 15%; work still required 
• [16:45] ‘Separate’ ETR computations: JVs and other fact patterns that split the calculation 
• [18:20] M&A and reorgs: Chapter 6 largely carries over into the safe harbor; ‘Simplified M&A’: purchase price allocations generally left alone if deferreds align 
• [21:10] Complex transition rules: tracking post-30 Nov 2021 attributes still required; Excess negative taxes: carrying forward the ‘bad’ DTA component 
• [24:20] Return-to-provision adjustments: a 12-month election, applied consistently group-wide 
• [26:00] Integrity rules: matching, full allocation, single expense/loss, and consistent debt treatment 
• [28:40] Key difference vs CBCR: adjust for ‘bad’ items, and eligibility can reset under a 24-month standard 
• [30:15] Future guidance on interactions with side-by-side carve-outs (and why filing still matters) 
• [32:20] Will simplification improve? Hope vs consensus constraints 
• [34:15] Compliance takeaways: build the process now, centralize, and manage binding elections 
• [36:40] Bottom line: the ‘cavalry isn’t coming’; plan for the third set of books to persist 

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