Currency Exposure - How Multi-Currency Portfolios Protect Expat Wealth

Most investment conversations focus on what to hold - shares, bonds, funds, property. Currency is often treated as an afterthought, if it's considered at all. But for anyone living and investing across borders, currency exposure can move the needle on returns just as much as asset selection does.

Currency movements themselves are driven by a mix of factors - economic growth, interest rates, and investor confidence among them - which is exactly why trying to predict the next move is rarely a sound basis for a financial plan. The more useful approach is to accept that currencies will move, and to structure a portfolio so that it can absorb those movements rather than be knocked off course by them.

Consider a portfolio built entirely in one currency by someone who now earns, spends and plans to retire somewhere else entirely. Every exchange rate movement between now and the day those assets are needed will affect what they're actually worth in real terms. A strong year in the market can be quietly eroded by a weak year in the currency, and the reverse is just as true.

This isn't a reason to avoid investing internationally - quite the opposite. It's a reason to be deliberate about how currency exposure is structured within a portfolio, rather than letting it happen by accident.

It's worth remembering, too, that two people can hold exactly the same underlying investments and still end up with very different results, purely because of the currency each is measuring their return in. The investment performance is identical - what differs is the exchange rate journey each person's returns have travelled through to get there. That's currency exposure in its simplest form, and it's why it deserves the same deliberate attention as any other part of a portfolio.

For someone living and investing entirely within one country, currency exposure barely registers as a consideration. For expats, it's rarely optional.

A British expat working in the UAE, paid in dirhams, with a pension left behind in the UK and a plan to eventually retire in Europe, is exposed to three currencies before they've made a single active investment decision. An American expat with a 401(k) held in dollars, living costs in euros and a property in Asia faces a similar picture. The exposure exists by default - the only question is whether it's managed intentionally or simply left to chance.

This is where the case for a considered, multi-currency approach becomes clear. It isn't about predicting which currency will perform best - nobody can do that reliably. It's about making sure that a portfolio's currency exposure reflects where and how someone actually plans to live, rather than where they happened to start.

A multi-currency portfolio doesn't simply mean holding a bit of everything for the sake of diversification. It means aligning currency exposure with future spending needs, in proportions that make sense for that individual's circumstances.

For someone planning to retire in the country where they currently live, a heavier weighting toward that local currency may make sense. For someone planning to move again, or to split retirement between two countries, a more even spread across major currencies can reduce the risk of being caught out by a single adverse currency movement at the wrong moment.

This is also where offshore investment structures often come into their own for expats, since many are specifically designed to hold and switch between currencies without the tax drag or administrative complexity of doing so through a domestic account.

The biggest currency risk many expats carry isn't a poor decision - it's no decision at all. A portfolio built years ago in a previous country of residence, left untouched through several relocations, can end up completely misaligned with someone's current life without anyone noticing until it matters.

This tends to surface at the worst possible time - typically around retirement, a house purchase or another point where assets actually need to be converted into spendable currency. By then, the exposure has often been building quietly for years.

A useful starting point is a simple audit: in which currencies do you earn, spend and hold assets today, and how might that change over the next five to ten years? Where there's a mismatch between where the money is and where it's likely to be needed, that's usually the clearest signal that a portfolio's currency structure is overdue for a review.

Time horizon matters here as much as geography. A goal that's close at hand, such as school fees due next year or a house purchase in the near term, is more exposed to short-term currency swings, so reducing that exposure where practical can be worthwhile. A goal decades away, such as retirement, behaves differently, since currency movements tend to even out over longer periods, and retaining some diversified currency exposure can be a genuine asset to a long-term plan rather than a risk to be minimised.

This is rarely a decision to make in isolation, given how closely it interacts with tax residency, retirement timing and broader investment strategy. A conversation with an adviser familiar with cross-border planning can help clarify whether your current exposure genuinely reflects your plans, or whether it's simply a legacy of where you happened to be when you first started investing.

If you'd like to talk through your own currency exposure and what a properly structured multi-currency portfolio could look like for your circumstances, our advisers would be glad to help you take stock. Contact us to start the conversation.