迪爾戴姆迪爾戴姆®Diadem Consulting Group

Cross-Border Tax Coordination

Core Service

Making the critical calls on your tax pathway, across multiple jurisdictions, year after year

What cross-border families and business owners truly need isn't one more tax return—it's someone to see clearly which path to take. 迪爾戴姆 works within an annual governance framework to map your tax residency and filing obligations across jurisdictions such as Mainland China, Hong Kong and the United States, design compliant pathways, and coordinate licensed professional firms to carry them out.

Book a consultation

Who it's for

  • Families with cross-border income or overseas assets: overlapping filing obligations across jurisdictions call for one complete map of what's owed
  • Individuals planning a change of tax residency: before entering or leaving a tax regime, see the full cost and timing first
  • Business owners operating across borders: personal, corporate and equity tax issues intertwine and need coordinated judgement

How we work

  1. 1

    Current-State Review

    We map the tax footprint of your residency, assets and income sources across each jurisdiction, producing a baseline record.

  2. 2

    Pathway Design

    For key decisions—residency, structure, timing—we set out comparable pathways with a clear analysis of the trade-offs.

  3. 3

    Coordinated Execution

    We engage licensed tax advisers and accountants to complete the specific filings and attestation, while we own the coordination and quality control.

  4. 4

    Annual Review

    Regulations and family circumstances change every year; we test the pathway's validity annually and adjust as needed.

What's included
  • A multi-jurisdiction tax-obligation map (baseline record)
  • Pathway comparisons and written recommendations for key decisions
  • Selection, engagement and coordination of licensed executing firms
  • Annual governance meeting and review report
What you'll need
  • Identity and residency information (passport, visas, residence records)
  • An overview of income and assets (no source documents needed—just the outline for the first conversation)

Frequently asked questions

Do you file my taxes for me?

Not directly. The specific filings and attestation are completed by independent licensed firms, while we handle pathway design, firm coordination and quality control. That is precisely the point of separating governance from execution: judgement and execution check one another, and your risk is lower.

Can you guarantee how much tax I'll save?

No—and be wary of any firm that makes such a promise. A compliance judgement is not a guaranteed outcome; a tax conclusion ultimately rests with the law and the competent tax authority. What we provide is pathway comparison and risk assessment, so you can decide fully informed.

Compliance note
This service is tax-governance and pathway advisory; it does not constitute tax, legal or investment advice, nor does it promise any tax outcome. Specific filings and attestation are completed by independent licensed professional firms in accordance with their own professional standards, and the relevant conclusions are subject to the determination of the competent authority in each jurisdiction.

Interested in Cross-Border Tax Coordination?

Tell us about your situation, and we'll help you map the pathway, clarify what's needed and set out the next step.

Book a consultation← Back to services