Key Takeaways
- Keeping the majority of your wealth in your home country after moving abroad creates unnecessary financial risk.
- “Home bias” leads to over‑concentration in a single market and currency, exposing you to exchange‑rate and local‑economy swings.
- Diversifying across currencies, regions, sectors, and asset classes aligns your portfolio with your day‑to‑day expenses in euros.
- Investment structures that are tax‑efficient in your home country (e.g., UK ISAs) may be inefficient under French tax rules; reassess them.
- An assurance vie, combined with globally diversified funds, offers a flexible, tax‑efficient wrapper for French residents.
- Retaining some home‑country assets (e.g., pensions) can be sensible, but the bulk of your portfolio should reflect your new life in France.
- Regularly reviewing currency exposure, geographic allocation, and investment structure helps build a resilient, future‑proof portfolio.
Why Keeping All Your Money in One Country Is Ill‑Advised
When you relocate permanently, your spending habits, tax obligations, and long‑term goals shift to the host country. Yet many expatriates continue to hold the bulk of their savings, pensions, and investments in their native currency and market. This mismatch can erode purchasing power if the home currency weakens against the euro, and it leaves you overly exposed to the economic fortunes of a single nation. Recognizing that your financial context has changed is the first step toward a more resilient strategy.
Understanding the Home‑Bias Tendency
Economists label the preference for domestic assets “home bias.” For Britons living in France, this often means a portfolio heavily weighted toward UK equities, bonds, property, and savings products. While familiarity feels comfortable, home bias concentrates risk: a downturn in the UK economy or a prolonged period of sterling weakness can disproportionately affect your wealth, even though your daily expenses are priced in euros. Awareness of this bias allows you to take corrective action before it undermines your financial security.
Currency Exposure Matters
Most of your day‑to‑day costs—housing, groceries, healthcare, leisure—are incurred in euros. If a large share of your assets remains denominated in pounds, dollars, or another currency, fluctuations in exchange rates directly impact the real value of your income and savings. A strengthening euro can make foreign‑currency holdings less valuable in local terms, while a weakening euro can increase the cost of imported goods. By allocating a meaningful portion of your portfolio to euro‑denominated investments—or using hedging techniques—you align your investment returns with your spending needs.
Mitigating Market Concentration Risk
The UK stock market accounts for only a fraction of global market capitalisation, yet many British expatriates hold portfolios dominated by UK‑focused funds or individual stocks. This concentration amplifies vulnerability to sector‑specific shocks (e.g., changes in financial services regulation) or country‑specific events (e.g., Brexit‑related volatility). Diversifying across multiple geographic regions—Europe, North America, Asia, emerging markets—and a variety of industries reduces the impact of any single market’s downturn and captures growth opportunities wherever they arise.
Structuring Investments for Life in France
Investment vehicles that are tax‑efficient in your home country may receive unfavorable treatment under French tax law. For example, UK ISAs or premium bonds do not benefit from the same tax exemptions in France, and foreign pensions may be subject to different reporting requirements. Reviewing existing holdings and re‑structuring them to comply with French regulations can lower tax liabilities, simplify administration, and avoid potential penalties. Professional advice tailored to cross‑border situations is often invaluable in this process.
The Role of Assurance Vie
For most French residents, an assurance vie stands out as a versatile, tax‑efficient wrapper. It allows you to hold a broad range of assets—equities, bonds, funds, even alternative investments—while benefiting from favorable tax treatment on growth and withdrawals after a certain holding period. When paired with globally diversified funds, an assurance vie can form the cornerstone of a long‑term investment strategy that matches both your risk tolerance and your residency status in France.
Balancing Familiarity with Opportunity
It is not necessary—or always desirable—to divest completely of home‑country assets. UK pensions, long‑held property, or sentimental investments may provide stability and emotional comfort. The key is to ensure that these holdings represent a proportionate share of your overall wealth, leaving ample room for diversified, euro‑aligned investments. A balanced approach might allocate, for instance, 30‑40 % to home‑country assets (primarily pensions and property) and the remainder to a globally diversified, euro‑focused portfolio.
Building a Resilient, Future‑Proof Portfolio
Successful investing relies less on predicting market movements and more on constructing a portfolio capable of weathering uncertainty. By regularly assessing your exposure to currency, geography, sector, and asset class, you can adjust your holdings to reflect evolving personal circumstances and macro‑economic trends. This proactive stance helps ensure that your assets support your lifestyle in France today while positioning you to benefit from growth opportunities worldwide tomorrow.
Christopher Davenport is a financial adviser at Kentingtons.