The CFO's agenda for Pillar Two execution in 2026

The compliance effort: Precision over overhaul

Pillar Two introduced a global compliance obligation akin to a highly complex, unified global tax return. While transitional country-by-country reporting (CbCR) safe harbors provide temporary relief from the full Global Anti-Base Erosion (GloBE)computations, these provisions have an expiration date. The transitional CbCR safe harbors allow organizations to draw from existing data with a limited number of adjustments, where the business operations met certain qualifications. These provisions are available through fiscal years beginning on or before December 31, 2027, though subject to earlier restrictions on use if qualification is not met in a specific jurisdiction.

The January 2026 OECD “side-by-side” guidance was a significant development for US multinationals, effectively eliminating two top-up taxes: the Income Inclusion Rule (IIR) and the Under-taxed Profits Rule (UTPR). However, it did not remove Qualified Domestic Minimum Top-up Taxes (QDMTTs) or GloBE Information Return reporting obligations. The guidance also introduced new safe harbors that are permanent in nature.

The impending new permanent safe harbors are not a free pass—they require computations that are effectively "GloBE Lite" calculations. These safe harbors, as well as full GloBE computations, demand a higher caliber of data aggregation and validation, adjustment computation, and consideration of special rules than what many finance functions currently produce. Consequently, looking at a fresh data gap assessment is a critical step for organizations.

Importantly, the technology response should be right-sized. Pillar Two does not mandate a sweeping enterprise resource planning project. For many organizations, the immediate mandate is pragmatic data readiness. The focus should be on conducting targeted diagnostics to identify specific data gaps. By implementing precision technology enhancements, such as application programming interfaces and targeted data-collection accelerators, CFOs can build a reliable compliance process without unnecessary capital expenditure.

This need for precise data readiness over systemic overhauls is reinforced by Deloitte's 2026 Global Tax Policy Survey¹. The survey identified increased tax transparency and reporting requirements as the most significant business impact facing tax and finance leaders, with complexity and compliance burdens presenting the greatest challenge. Across all tax policy themes, respondents highlighted growing obligations related to sourcing, verifying, and securing data, underscoring the need for stronger data foundations to support Pillar Two compliance and broader tax reporting requirements.

The integrated tax ecosystem: Anchoring the effective tax rate narrative

Boards and audit committees care about financial outcomes, predictability, and risk. Therefore, executive discussions surrounding Pillar Two are typically anchored in the impacts on effective tax rate and financial statement provision.

Managing this board-level narrative is critical. According to the 2026 Global Tax Policy Survey,¹ 88% of tax and finance leaders surveyed globally now expect their overall tax liability to rise under the Pillar Two framework. However, managing this is less about the rate itself and more about predictability: The survey shows that 60% of executives surveyed value tax stability and certainty over the absolute tax burden when making enterprise investment decisions.¹

Decisions made to manage one tax liability frequently create unintended ripple effects on an organization’s global tax profile. As CFO, your role is to ensure that Pillar Two is evaluated holistically alongside other tax systems applicable to your organization, including US provisions like Corporate Alternative Minimum Tax (CAMT), Base-Erosion and Anti-abuse Tax (BEAT), foreign inclusions (like subpart F and net CFC tested income) and foreign tax credits, and Foreign-Derived Deduction Eligible Income (FDDEI), formerly FDII. Any changes to legal entity structure, financing, intellectual property ownership, supply chain, and local country tax positions can significantly affect Pillar Two and other tax outcomes.

When forecasting financial results, modeling mergers and acquisitions (M&A) targets or allocating capital, your teams should assess the integrated impact on the company's global effective tax rate, specifically factoring in how Pillar Two interacts with the myriad of other tax provisions. 

The operating model imperative: Executing at scale

With the compliance processes settling in but Pillar Two guidance continuing to evolve across jurisdictions, the executive focus should also include how the work gets done. The regulatory uncertainty of the past few years caused many organizations to pause structural decisions. Today, relying on ad hoc resourcing and manual workarounds may create operational risk. The CFO mandate is not just about technical compliance; it also requires clear ownership, decision rights and governance across tax, finance, controllership, IT, and legal functions.

Organizations should consider their tax operating models, weighing the complexities of resource allocation, available software solutions, and risk control. The operational burden of these new reporting frameworks is reaching a breaking point. Deloitte’s 2026 survey¹ highlights that 40% of global organizations surveyed see rising compliance, administrative, and reporting requirements as the single largest operational impact on their businesses today.¹

Building an entirely in-house capability often requires ongoing investment in talent, enabling technology, and governance processes that must keep pace with an evolving landscape of rules. For that reason, many CFOs are finding that a co-sourcing approach is an effective way to de-risk implementation. This model typically allows organizations to tap into a partner’s established technology infrastructure, jurisdictional knowledge, and multidisciplinary talent while preserving internal ownership of key decisions. Done effectively, this approach can strengthen control, improve compliance, and reduce the burden on already lean tax and finance teams.

Pillar Two represents a profound shift in global taxation. By establishing a resilient operating model, you can confidently position your organization for long-term success.

The path forward

Pillar Two is a tax issue that CFOs need to stay closely involved in. Organizations that move beyond compliance-response and integrate Pillar Two with their global tax strategy may be better positioned to address evolving requirements.

By aligning Pillar Two with your broader tax provision process, investing in pragmatic data accelerators and building a scalable operating model, you can transform a significant compliance burden into a more controlled and repeatable enterprise process. In 2026, CFOs may be increasingly tasked with moving Pillar Two from technical analysis into sustained execution.

Source: 1.Deloitte, 2026 Global Tax Policy Survey, 2026

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