BEPS Action 13 country-by-country reporting — the 2026 refresh

The Country-by-Country Report (CbCR) was always meant as a risk- assessment tool, not a tax liability number. The Pillar Two transitional safe harbour quietly changed that: CbCR data became load-bearing for a top-up tax computation, and tax authorities have started to push back on the data they will accept.

What is changing

Several jurisdictions have published guidance in the last 18 months that narrows the definition of qualified financial accounts (QFA) used for the CbCR safe-harbour calculation. The recurring themes:

• Consolidation perimeter. Entities that the group consolidated using the equity method are excluded from the QFA-eligible CbCR data in several jurisdictions, with knock-on effects on the simplified- ETR test.
• Local statutory vs IFRS. Where the consolidated package mixes IFRS reporting at the group level with local-GAAP statutory accounts at subsidiary level, some authorities now require the CbCR safe-harbour calculation to use a consistent basis across the jurisdictional rollups. The mixed-basis approach that worked in the first reporting cycle no longer holds.
• Retroactive correction. A material restatement of the CbCR data in year N+1 no longer cures a safe-harbour position taken in year N in some jurisdictions. The position is fixed at the time of filing.

What it means in practice

Three things for groups currently relying on the transitional safe harbour:

1. Document the data lineage. If the safe-harbour numerator can be traced cleanly from the audited consolidated accounts through the CbCR template to the GloBE GIR, the position survives an enquiry. If the data path runs through an Excel chain with manual adjustments, it does not.
2. Re-run the eligibility test annually. A safe-harbour position that passed in year N does not automatically pass in year N+1; the underlying data shifts, and the local guidance shifts faster.
3. Plan the off-ramp. The transitional safe harbour ends for fiscal years beginning on or after January 1 2027. The off-ramp takes a year of preparation, not a quarter.

Documentation principle

CbCR documentation under BEPS Action 13 was always supposed to be the high-level overview that lets a tax authority decide whether to look closer. Under Pillar Two, it has become an input to a tax number. That is a discipline change for groups whose CbCR submission was historically a back-office exercise.