Do you have international business or investment interests?

Business entities are often treated differently from one jurisdiction to another. For example, an entity treated as a partnership in one jurisdiction may be treated as a corporation in another, so the tax could be different as a result of that classification.

Investments that are tax efficient in one jurisdiction may suffer harsh taxes in another. For example, mutual funds, investment bonds and collective investment entities often receive favorable tax treatment in their “home” country but are subject to unfavorable tax treatment in other jurisdictions. Non-US taxpayers investing in, or moving to, the US face similar issues.