Navigating Pillar Two’s side-by-side system in banking and capital markets

  • Insight
  • March 03, 2026

Global minimum tax rules continue to evolve, and for banking and capital markets organizations, regulatory design matters. In this episode, Denise Schwieger and Chris Riffle unpack the OECD’s newly released side-by-side system under Pillar Two and what it could mean for US-parented banks, broker-dealers, asset managers and capital markets groups. The discussion explores how the new framework interacts with highly regulated legal-entity structures, why recent OECD determinations are notable for US groups, and how tax leaders can balance near-term compliance with longer-term simplification opportunities as the rules take shape.


Key takeaways

  • The side-by-side system acknowledges financial services realities. The OECD’s approach acknowledges that regulated banks and capital markets groups often operate through legal-entity and branch structures that are not easily reconfigured, shaping how Pillar Two applies in practice.
  • Pillar Two exposure could shift for qualifying US-parented groups. The side-by-side safe harbor may significantly reduce IIR and UTPR exposure for eligible organizations, and the United States’ qualification makes the framework particularly relevant for US-headquartered banking and capital markets groups — subject to local adoption.
  • Simplification effort does not remove compliance or capital considerations. Domestic minimum taxes and Globe information return requirements remain in scope, and Pillar Two outcomes continue to intersect with regulatory capital planning for banks and broker-dealers.
  • Timing and scope depend on legislation and structure. Benefits are intended to apply beginning in 2026 but hinge on jurisdictional enactment, and the framework’s application to certain joint ventures and subsidiaries may influence governance, modeling and capital allocation decisions.
  • Near-term execution and reporting remain critical. Pillar Two applies fully for 2024 and 2025, and financial reporting impacts arise only once changes are enacted or substantively enacted, requiring continued focus on calculations, controls and disclosure readiness.  

Segmented topics with timestamps:

  • 0:00 – Opening & banking and capital markets context
  • 1:15 – Why Pillar Two is uniquely challenging for financial institutions
  • 2:12 – The side-by-side and UPE safe harbors explained
  • 3:27 – Qualification requirements and the US determination
  • 4:59 – Implications for banks, broker-dealers and capital markets groups
  • 5:38 – What remains unchanged for financial institutions
  • 6:23 – Legislative timing and competitive considerations
  • 7:20 – Practical focus areas for BCM tax leaders
  • 8:12 – Financial reporting considerations for regulated entities
  • 8:52 – Final thoughts and closing

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Denise Schwieger

Denise Schwieger

Principal, Tax Sector Champion, Banking and Capital Markets, PwC US

Christopher Riffle

Christopher Riffle

Principal, PwC US

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