Global reporting and enforcement for cross-border assets have crystallised into a denser regulatory reality. Between the EU’s DAC8, the OECD’s Crypto-Asset Reporting Framework (CARF) and the ongoing roll-out of the OECD/G20 Pillar Two (GloBE) package, corporate executives with mobile capital face materially higher reporting obligations, broadened information exchange and new top‑up tax mechanics that will affect effective tax rates and compliance exposure across jurisdictions.

At the same time, tax administrations have signalled and resourced stronger enforcement: multilateral cooperation (including the J5), expanded information‑exchange capacity and renewed domestic enforcement programmes mean that historical gaps in detection are closing. Groups should therefore treat readiness as a near‑term business imperative rather than a distant regulatory topic.

Assess the evolving reporting landscape

Begin by mapping which new reporting regimes touch your structures. In the EU, DAC8 entered into force on 1 January 2026 and extends mandatory reporting and automatic exchange to many crypto‑asset service providers and other intermediaries; its first exchanges will follow the transposition and reporting timetable set by Member States. Knowing which entities qualify as reportable intermediaries or counterparties is the first step to practical remediation.

Beyond the EU, the OECD’s CARF and the amended Common Reporting Standard establish global templates and XML formats for automatic exchange of crypto‑asset information; several jurisdictions adopted CARF reporting mechanics in 2025,2026 and continue to prepare IT and administrative channels for incoming data. Mobile executives must therefore inventory custodial and trading relationships to anticipate incoming cross‑border data.

Practical action: produce a jurisdictional matrix showing (i) which holdings and intermediaries are in scope of DAC8/CARF/CRS; (ii) local reporting dates and reciprocity expectations; and (iii) existing data flows that can be repurposed for tax reporting. That matrix becomes the operational backbone for mitigation and disclosure planning.

Prepare for Pillar Two and top‑up taxes

Pillar Two (the Global Anti‑Base Erosion model rules or GloBE) implements a 15% global minimum tax through an interlocking package (IIR, UTPR, QDMTT). Many jurisdictions have enacted or published implementing measures and taxpayers should no longer assume the status quo for low‑taxed profits. Companies with cross‑border mobile activities must calculate potential top‑up liabilities and adopt an operational model for reporting and payment.

Timing and local mechanics vary: some countries prioritised QDMTT or IIR implementation timelines and introduced transitional filing regimes, extensions or domestic top‑up taxes. Groups should determine which local filing obligations (IIR filings, QDMTT elections, or UTPR disclosures) will apply to their fiscal year‑ends and model the cash‑tax impact under realistic scenarios.

Practical action: run a triage exercise to identify (a) entities that may trigger top‑up taxes; (b) required local registrations and forms; and (c) the data sources needed (statutory accounts, tax adjustments, jurisdictional ETR components). Early modelling reduces surprises and informs whether structural or commercial changes are warranted.

Re‑evaluate entity structure and substance

Regulators are scrutinising whether legal form is supported by genuine economic substance. The combination of enhanced reporting, information exchange and Pillar Two top‑up mechanics increases the likelihood that passive or conduit entities will attract attention. A principled review of entity purpose, governance, contractual roles and local management is therefore essential.

Where an entity’s economic role is thin, executives should consider remediating substance (board composition, local personnel, decision‑making evidence) or reorganising activities to align with legitimate commercial objectives. Such remediation must be documented contemporaneously and commercially justified to hold weight in an audit.

Practical action: conduct a substance‑gap analysis for each holding and service entity, produce contemporaneous minutes and policies for decision‑making, and where appropriate, regularise through pragmatic restructuring rather than opaque layering that attracts scrutiny.

Tighten transfer pricing, documentation and audit readiness

Heightened reporting and exchange of information increase the odds that transfer‑pricing positions will be tested. Tax authorities expect robust, contemporaneous transfer‑pricing documentation that links value drivers to pricing, addresses intangibles and demonstrates arm’s‑length outcomes. Documentation should be jurisdiction‑specific where material adjustments may arise.

Executives should prioritise areas with the highest mismatch risk: management and advisory fees, licensing of intangibles, intra‑group financing and service cost allocations. Strengthening benchmarking, creating defenders’ packs and maintaining reproducible data pipelines will materially reduce dispute risk and the costs of defence.

Practical action: upgrade transfer‑pricing dossiers, implement automated documentation workflows from ERP/financial systems, and plan for early engagement with tax authorities (e.g., advance pricing agreements or rulings) where positions are novel or material.

Bring crypto and digital‑asset holdings into compliance

Crypto exposures are now squarely within the remit of tax transparency regimes. DAC8, CARF and evolving MiCA/MiFID interplay increase both supervisory attention and the volume of information shared among tax authorities. Entities holding tokens, staking rewards, or liquidity positions should assume data will be matched against domestic tax filings.

Immediate priorities include mapping wallet custody (self‑custody vs hosted), identifying reportable transactions and ensuring accounting and tax treatment for events (airdrops, forks, staking, swaps) are documented and consistently applied. Where intermediaries report on your customers or your group companies, reconcile reported flows with internal ledgers proactively.

Practical action: implement dedicated crypto accounting and tax workflows, reconcile exchange and custody reports to group books, and where exposure is significant consider voluntary disclosures or advance engagement to reduce penalty risk.

Operationalise compliance: governance, data and voluntary disclosure

Compliance is now an operational exercise that sits at the intersection of tax, treasury, legal and IT. Establish a cross‑functional governance forum to oversee international reporting, assign clear ownership for data collection and validation, and create escalation paths for material inconsistencies. Investing in data models and templates for jurisdictional information reduces rework under tight filing timelines.

Where legacy non‑compliance or disclosure gaps exist, many administrations continue to offer voluntary disclosure windows or penalty mitigation routes; early, controlled remediation is often preferable to reactive litigation. Coordinated disclosure strategies should weigh reputational, commercial and criminal risk and be executed with specialised counsel.

Practical action: (1) design a repeatable data‑extraction playbook for CRS/CARF/DAC8 filings, (2) test filing dry‑runs a of first deadlines, and (3) prepare a decision matrix for voluntary disclosure that incorporates legal, tax and business consequences.

For mobile executives, the accelerating convergence of transparency standards and enforcement capacity means the window to adapt with orderly, business‑led changes is short. Waiting for audits to happen is an expensive strategy; proactive remediation, well‑documented substance and robust systems materially reduce fiscal and commercial risk.

Finally, treat compliance readiness as a corporate resilience programme: combine scenario modelling (Pillar Two top‑up outcomes, matched CARF flows), strengthen cross‑border coordination, and engage specialist counsel early. That approach preserves optionality, reduces exposure and positions the business to respond constructively to enquiries.