International tax, cross-border structuring and wealth oversight for entrepreneurs, founders and investors.
A connected perspective
Residence, ownership and capital belong in the same conversation. We bring the pieces into focus, so you can see what matters and decide what comes next.
The longer view
Companies, people and commercial activity.
Entities, governance and succession.
Assets, liabilities and future liquidity.
Each relationship has a purpose. Planning starts by making the ownership, responsibilities and jurisdictions visible.
Residence, family priorities, business activity and liquidity.
Ownership records, reporting obligations and adviser coordination.
A clear set of decisions, responsibilities and follow-up actions.
Interactive illustration with fictional figures. It is not a client account, investment performance or a promise of results. Clients hold and direct their own accounts.
Research & letters
An independent study by Nathan Elliott Shantz on unequal access to international mobility and its consequences for taxation, political voice and the social contract.
PDF · 42 pages · 563 KB
A companion to the Asymmetric Mobility paper, examining how differing capacities to relocate reshape the relationship between citizens and the state.
PDF · 11 pages · 354 KB
We serve
Our work begins with the business you have built—and the decisions that come next.
Preserve the enterprise. Plan the ownership, succession and life around it.
Coordinate founder mobility, equity and liquidity with the company you are building.
Bring the owner, operating footprint and international cash flows into one view.
Align project interests, financing and personal wealth with a long investment horizon.
Understand ownership, investment access and the consequences of cross-border capital.
Plan for mobility while respecting client relationships and how work is performed.
The practice
Where you live, how you own and how your capital is organized deserve to be considered together.
Explore the practicePersonal residence, departure and continuing obligations, considered in the context of your business and your life.
How businesses and assets are held, how decisions are made, and how ownership can endure through change.
A consolidated view of assets, entities and jurisdictions to support informed decisions.
About the founder
“I help clients consider better personal residency options and restructure their businesses, while maintaining global regulatory compliance and preserving long-term wealth.”
Founder, Grey River Associates
Intelligence with accountability
Grey River Associates is an AI-native financial services firm, combining modern technology with professional judgment and a commitment to client security and confidentiality.
Technology with purposeMore connected information. Less administrative friction. More time for the decisions that matter.
Human judgmentContext, professional review and clear responsibility remain central to the work.
Security as a priorityCareful handling of sensitive information, appropriate access and discretion throughout the relationship.
Private correspondence
Tell us what you are building, what is changing, and where you need clarity.
We work with leading fintech and banking solutions to help our clients streamline their financial operations securely and efficiently.
