First Securities & Trust of Switzerland AGFirst Securities & Trust of Switzerland AG

Cross-Border Tax Engineering

Tax Optimization

Cross-border tax engineering and reporting handled with quiet precision. Compliant by construction, efficient by design.

The most expensive tax mistakes are usually structural — made years before the bill arrives.
FS&T tax philosophy

The Modern Tax Environment

More demanding by the year.

Global families and mobile entrepreneurs operate in a tax environment that has become more demanding by the year: dual residency questions, foreign asset reporting, estate and gift tax treaties that interact unpredictably, CRS and AEOI exchange of information, and the evolving OECD BEPS framework.

We treat compliance as the floor, not the ceiling. Designing positions that remain robust as the rules evolve — that is where genuine optimisation lives.

Complexity has not peaked.

The Cross-Border Reality

Four challenges we engineer around.

Each is solvable individually. The art is solving them together.

01

Dual Residency

Living and earning across borders creates competing claims to the same income — solvable with the right structure.

02

Treaty Networks

Treaties interact unpredictably. We map them deliberately rather than relying on each in isolation.

03

CRS & AEOI

Cross-border information exchange is the standard. Compliance is the floor, not the strategy.

04

OECD BEPS

An evolving global framework reshaping what is acceptable. Plans must remain robust as the rules move.

Our Approach

Integrated strategies, not parallel filings.

We coordinate with external tax counsel in each jurisdiction where you have exposure, ensuring the structure works as an integrated whole rather than as a stack of parallel filings. The senior FS&T advisor remains the single point of accountability throughout.

Structuring for efficiency spans holding companies, trust domicile decisions, treaty access, entity selection, and the timing of transactions — always within legal boundaries.

Reporting and documentation delivers consolidated filings that are accurate, defensible, and on time — every year, in every jurisdiction.

Who Benefits Most

The clients we serve best.

01

Mobile Executives

Internationally mobile leaders earning, vesting, and exercising across multiple jurisdictions.

02

Cross-Border Owners

Entrepreneurs and family businesses with operations, customers, or holdings in more than one country.

03

Global Families

Households with heirs, residences, or real estate spread across borders — every change adds friction.

Discuss Your Tax Position

We work alongside your existing advisors.

A confidential preliminary assessment with a senior advisor — exploratory, no obligation, and designed to complement (not replace) your current counsel.