Public CbCR readiness - What mature tax teams do differently

Public CbCR does not create new data, it creates new readers

Public Country‑by‑Country reporting marks a shift from confidential tax filings to public disclosure. What was previously reviewed only by tax authorities will soon be accessible to a much wider audience, including investors, journalists, NGOs, and other external stakeholders.

While the underlying data points largely mirror OECD CbCR, the context, audience, and expectations are materially different. As a result, Public CbCR introduces considerations that go beyond technical reporting, including governance, consistency, interpretation, and reputation.

This checklist has been developed to support tax leaders navigating that shift.

Most available guidance focuses on what must be filed and when. Far less attention is paid to the practical questions that arise once tax data becomes public, such as how figures may be interpreted outside a tax authority context, where narrative becomes essential, and how Public CbCR interacts with OECD CbCR, Pillar Two, and other disclosures.

This checklist is not intended as a tick‑the‑box compliance tool. It is designed to be used as:

• a discussion framework within the tax function

• a planning aid to identify gaps early

• a structuring tool for collaboration with legal, finance, and communications teams

Set your Public CbCR objectives & risk appetite

Because publication without a clear stance shapes its own narrative

Before touching data, leading tax teams need to answer this question internally:

☐ What level of external scrutiny are we comfortable with?
☐ Are we aiming for minimum legal compliance or defensive clarity?
☐ Which jurisdictions or figures could attract questions or misinterpretation?
☐ What kinds of stakeholder reactions would we consider acceptable, and which would we want to avoid?

Why this matters:

Without an explicit risk appetite, teams default to “file and publish”, which is often the most dangerous middle ground.

Stress‑test OECD CbCR data as if you were an outsider

Public readers do not apply tax-authority logic

OECD CbCR data is typically reviewed for accuracy, not for public readability.

☐ Identify jurisdictions with:

• high profits and low cash taxes

• low profits with material headcount or assets

• significant year‑on‑year volatility

☐ Ask:

• How would these figures look without internal context?

• Which numbers would benefit from clear narrative framing ahead of publication?

Key mindset shift:

Public CbCR does not create new data, it creates new readers.

Re‑write narratives for a non-tax audience

Technical accuracy does not guarantee public understanding

Narratives written for tax authorities do not automatically work in a public context.

☐ Review existing OECD CbCR narratives for tone and suitability
☐ Remove authority‑specific or overly technical language
☐ Explain anomalies neutrally, without over‑justifying
☐ Align language with annual report and sustainability disclosures
☐ Test narratives with someone outside the tax function

Rule of thumb:

If the explanation only works for tax professionals, it is not ready for publication.

Put figures in the context of other available financial date

Once public, numbers are read side-by-side

Public CbCR will be read alongside other public and semi‑public information.

☐ Align Public CbCR with:

• OECD CbCR

• financial statements

• Pillar Two calculations (where applicable)

• other tax transparency or ESG disclosures

☐ Identify and explain:

• timing differences (tax paid vs tax accrued, prior-year settlements)

• permanent differences between accounting profit and tax base

• loss carryforwards and accumulated earnings affecting current taxation

• recurring country-level patterns likely to persist year‑on‑year
  
  

Principle:

Once public, figures are interpreted comparatively. Any visible divergence across disclosures, even if technically correct, requires proactive explanation.

Define governance, ownership & publication controls

Where execution failures are most visible

Public CbCR requires more explicit governance than confidential filings and should be treated as a controlled external disclosure, not an administrative step.

☐ Define clear ownership for data, narrative, and publication
☐ Identify required stakeholders for sign‑off (tax, finance, legal, ESG, senior management or board)
☐ Establish approval workflows and documentation standards
☐ Confirm technical output requirements (e.g. iXBRL / XHTML)
☐ Validate registry filing and website publication processes
☐ Ensure public accessibility and five‑year retention
☐ Prepare internal Q&A and escalation ownership

Why this matters:

Many Public CbCR issues arise not from tax technical errors, but from failed publication mechanics or unclear ownership once the data is public.

Run a dry‑run publication before first mandatory publication

Issues surface when the full picture is visible

Leading teams simulate publication ahead of deadlines.

☐ Produce a full draft using historic data
☐ Review it as if it were already public
☐ Challenge unclear figures and explanations
☐ Gather feedback from legal, finance, and communications
☐ Refine narratives and controls early

Why this matters:

Most late‑stage issues surface only when teams see the report as a complete, public document.

How to know you're ready

What confidence looks like before publication

Preparation is rarely “finished,” but strong readiness typically means:

• no unresolved internal disagreements

• clear ownership and defensible narratives

• consistent figures across disclosures

• confidence in explaining results externally

• reduced risk of post‑publication clarifications

Success in Public CbCR is usually quiet. Problems, by contrast, are very public.

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