Currency Diversification for South African Investors

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What Is Currency Diversification?

Currency diversification means holding assets in more than one currency, so your wealth does not depend entirely on the strength or weakness of the rand. For South Africans building or drawing down a retirement portfolio, this matters more than it does for investors in most other countries.

The rand is volatile and has weakened structurally over the long run. If all your savings sit in rand-denominated assets, your purchasing power relative to the rest of the world shrinks every time the rand depreciates. Over a retirement spanning 25 to 30 years, that erosion compounds into something serious. The pattern is consistent: savings that look substantial in rand terms but cannot fund the lifestyle the investor planned, because the real value has been quietly eaten away by currency weakness.

Currency diversification does not mean abandoning South Africa or speculating on exchange rates. It means building a portfolio where a portion of your wealth moves with global currencies, global economic growth, and global asset prices. The practical tools range from offshore unit trusts and exchange-traded funds (ETFs) listed on the JSE to feeder funds inside a retirement annuity.

If you are thinking about investing offshore from South Africa, currency diversification is usually the reason planners start that conversation early.

Why Rand Weakness Is a Retirement Risk, Not Just a News Story

Rand weakness directly affects your retirement. If your savings are entirely in rand and the rand continues to lose value against major currencies, your real purchasing power in a globally priced world shrinks, even if your rand balance grows.

This is not a short-term observation tied to any single political event. The rand’s depreciation against hard currencies like the US dollar, the euro, and the British pound is a structural trend driven by South Africa’s current account dynamics, inflation differentials, and the country’s risk premium as an emerging market. The pattern is well established over decades.

Consider a hypothetical illustration. A retiree with R10 million in 2026 invested entirely in rand-denominated assets faces a real problem if the rand depreciates materially over the next 20 years. Anything priced in dollars or euros, whether overseas travel, imported medical devices, or supporting children living abroad, becomes proportionately more expensive every year. The rand balance may grow, but the purchasing power it represents in global terms shrinks.

For a more concrete sense of the numbers: if you hold R10 million with zero offshore exposure and the rand weakens by an average of 4% per year against the dollar over 20 years, the dollar value of your portfolio falls from roughly $550,000 today to around $250,000 in real terms, even if your rand balance doubles. A portfolio where 40% sits in dollar-denominated assets tells a different story. The offshore portion holds its dollar value, and the rand weakness effectively boosts its rand value, partially offsetting the erosion on the domestic side. This is the rand-hedge effect in plain arithmetic, not in theory.

Scale that up and the gap becomes harder to ignore. A R20 million portfolio with no offshore exposure faces the same structural erosion in dollar terms. The rand balance grows; the global purchasing power does not keep pace. This is concentration risk in a single currency. It is the same principle that makes holding all your equity in a single company risky.

The good news is that retirement planning in South Africa has always had mechanisms for managing this. The question is whether you are using them deliberately.

What Currency Diversification Actually Looks Like in a Portfolio

Currency diversification in practice means owning assets that are priced in, or that generate returns in, foreign currencies. These can sit inside South African investment wrappers or outside them entirely, depending on your situation.

Inside South African structures, the most common approach is a feeder fund or global ETF listed on the JSE. These instruments invest in offshore markets but trade in rand. Your rand buys units; the underlying assets are priced in dollars, euros, or other currencies. When the rand weakens, those assets become worth more in rand terms. That is the hedge at work.

Outside South African structures, you can hold assets directly offshore through foreign currency accounts, offshore unit trusts, or shares listed on foreign exchanges. This gives you full currency exposure but also brings additional tax and reporting obligations you cannot ignore.

You can also achieve partial currency diversification without technically going offshore by holding rand-denominated assets in companies that earn significant revenue in foreign currencies. Resources companies and certain dual-listed shares have this property. It is an indirect form of currency diversification and is not as clean as direct offshore exposure, but it is better than being entirely reliant on the domestic economy.

For a full breakdown of the mechanics, the article on how to invest offshore from South Africa covers the practical steps in detail.

The Regulation 28 Rules Every South African Investor Needs to Know

If you are saving inside a retirement fund, there is a ceiling on how much offshore exposure you are allowed. Regulation 28 of the Pension Funds Act permits up to 45% of a retirement fund’s assets to be invested offshore, as confirmed in the 2022 amendment that raised the limit from 30%. The Financial Sector Conduct Authority (FSCA) oversees these limits. Check the current rules with your adviser or fund manager before acting, as the limit has changed before and could change again.

This limit applies to pension funds, provident funds, and retirement annuities. Even if you wanted to go 100% offshore inside your retirement annuity, the legislation does not allow it. The rule exists to keep retirement savings diversified across asset classes and to maintain some local investment, not purely to restrict you.

In practice, many investors do not reach the 45% ceiling. Their funds may invest 25% to 35% offshore, depending on the fund mandate. If you want to maximise your permitted offshore exposure within a retirement fund, you need to select funds whose mandates allow for the higher allocation and then confirm what the fund is actually holding in practice, not just what its mandate permits.

For someone with several funds across different structures, the position is more nuanced. If you hold a retirement annuity, a preservation fund, and a living annuity simultaneously, each fund’s Regulation 28 compliance is assessed separately. Your combined offshore exposure across all three could look very different from the position inside any single fund. Mapping that consolidated picture is one of the more useful things a coordinated review of your portfolio can do. It is also where sequencing matters: which fund you draw from first, and when, affects how much currency exposure remains working for you at each stage.

Outside retirement funds, in a discretionary investment account or an endowment, Regulation 28 does not apply. South African tax residents are still subject to exchange control rules, but the offshore allocation is not capped by pension legislation.

Understanding these rules matters particularly as the two-pot retirement system changes how you access your savings. The Regulation 28 limits apply to the retirement component. If you are unsure where you stand, working with a financial adviser on retirement planning is the most reliable way to map your current exposure against what is permitted and what makes sense for your circumstances.

Ways to Achieve Currency Diversification: A Comparison

The right vehicle for currency diversification depends on your phase of life, your tax position, and whether your savings are inside or outside a retirement fund. Each approach carries real trade-offs that you need to weigh before committing.

Fees deserve a direct mention here. Offshore funds typically carry higher costs than their domestic equivalents. Total investment charges on a global unit trust or feeder fund commonly run between 0.8% and 1.8% per year, depending on the platform and fund manager, compared to 0.2% to 0.9% for a comparable local index fund. Over 20 years, that difference compounds. It does not mean offshore is the wrong choice, but it is a real cost that should feature in your planning, not a footnote.

Two approaches can also work together. Many South African investors maximise their RA offshore allocation, then add a tax-free savings account invested in a global index ETF to layer further currency diversification on top without breaching any Regulation 28 limit. For someone with R5 million to R20 million across several structures, this combination is often where the practical opportunity sits.

For investors whose values require Shari’ah compliant options, both conventional ETF platforms and dedicated Islamic finance providers now offer offshore-exposed funds that meet halal screening criteria. This removes the false trade-off between compliance and diversification. The full offshore investing guide includes commentary on this, and the retirement planning guide sets it in the broader context of building a robust portfolio.

Currency Diversification When You Are Already Drawing an Income

Currency diversification works differently once you are retired and drawing income, and most general articles on this topic miss this distinction entirely.

In the accumulation phase, you want the rand to weaken relative to your offshore holdings. That means your offshore assets grow in rand terms, and you benefit. In the drawdown phase, the picture is more complicated. If you are drawing a rand income from a living annuity and the rand suddenly strengthens, your offshore assets lose value in rand terms. You are still drawing the same rand income, but your capital base has shrunk. This is sequencing risk, and it applies to currency movements just as it does to market returns.

A prolonged period of rand appreciation at the start of your retirement, while unlikely given historical patterns, is not impossible. If your portfolio is heavily weighted offshore and you are drawing income in rand, that scenario creates real pressure on your capital. You may need to sell more offshore units than you planned to meet your income needs.

This does not mean you should avoid offshore exposure in retirement. It means you need to think about the currency composition of your drawdown more carefully. Many retired investors hold a portion of their portfolio in rand-denominated, income-generating assets specifically to fund short-term income needs, while keeping offshore exposure for the longer-term growth portion of the portfolio.

For someone with savings spread across a retirement annuity, a preservation fund, a living annuity, and a discretionary investment account, this decision is not straightforward. The drawdown order matters. Which fund you draw from first, and in what sequence, affects how much currency exposure remains in the portfolio at each stage of retirement. A retirement annuity and a living annuity can carry very different offshore weightings, and drawing them down in the wrong order can inadvertently increase your rand concentration at exactly the wrong time. Getting the consolidated picture right across all your structures is where coordinated planning earns its keep.

The living annuity vs life annuity decision is closely connected to this question, particularly if you are considering retiring abroad. And if you are trying to understand how much monthly income a lump sum can generate, the currency composition of that lump sum will directly affect the answer over time.

The Risks of Currency Diversification You Should Not Ignore

Currency diversification carries real risks, and they deserve honest attention rather than a brief mention before moving on to the upside.

The first risk is cost. Offshore funds typically carry higher fees than their domestic equivalents. Platform fees, asset management fees, foreign withholding taxes, and currency conversion costs all reduce your net return. As noted in the comparison table above, total investment charges on offshore funds commonly sit between 0.8% and 1.8% per year. These costs are not always visible in a fund’s headline numbers, so check the total investment charge, not just the annual management fee.

The second risk is tax complexity. Offshore holdings generate tax obligations that do not disappear because the assets are held abroad. SARS requires South African tax residents to declare foreign income and capital gains and to apply for the appropriate foreign tax credits where double taxation agreements exist. Getting this wrong is costly, and investors do make expensive mistakes by not understanding their reporting obligations before they invest.

The third risk is currency volatility itself. Currency diversification reduces your dependence on the rand, but it does not eliminate volatility. Global assets can fall in value in their own currency. A foreign asset that drops 30% in dollar terms is not a hedge, regardless of what the rand does during the same period.

Finally, sequencing risk in drawdown, discussed in the previous section, is real. Why concentration risk undermines long-term returns applies whether the concentration is in a single company, a single sector, or a single currency. Spreading that risk is sensible, but spreading it without a plan creates its own problems.

Staying invested over the long term matters here too. Investors who move in and out of offshore assets based on rand movements often underperform those who hold a consistent allocation and rebalance systematically.

How Much of Your Portfolio Should Be in Foreign Currency?

There is no single correct answer, and anyone who gives you a precise figure without knowing your full picture is guessing. A 30% to 45% offshore allocation is a range many South African financial planners use as a general benchmark for long-term retirement portfolios. It is an observed norm, not a universal prescription, and your circumstances may justify more or less.

Several factors should shape your decision. Your time horizon matters: someone 30 years from retirement can tolerate more currency volatility than someone drawing income today. Your rand-based obligations also matter. If your retirement expenses will be largely local, domestic housing, local medical care, rand-denominated debt, you need enough local assets to fund those comfortably without relying on offshore realisations.

Your tax position matters too. The tax treatment of offshore gains outside a retirement fund is less favourable than the tax-deferred environment inside one. That does not mean you should avoid offshore investing outside a fund, but it should inform how you prioritise the vehicles you use.

For someone who holds savings across multiple structures, the picture is more complex than a simple allocation percentage suggests. If you have a preservation fund, a retirement annuity, a living annuity, and a discretionary investment account, each carrying R5 million or more, the appropriate offshore allocation in each depends on the tax treatment, the Regulation 28 constraints, and the role each structure plays in your income plan. Optimising each fund in isolation often produces a combined portfolio that is either over-concentrated in rand or over-exposed to currency volatility at the wrong time. Getting the consolidated allocation right is where a coordinated review adds genuine value.

If you are planning to retire abroad, the appropriate offshore allocation is likely higher than if you plan to remain in South Africa. The asset-liability match shifts when your spending is in a foreign currency.

This is exactly the kind of question where working with a financial adviser pays for itself. A good planner will model your specific income needs, tax position, and risk tolerance before arriving at a number that fits your life, not a template.

Frequently Asked Questions About Currency Diversification

What is currency diversification in simple terms?

Currency diversification is holding assets in more than one currency so that your wealth does not depend entirely on the strength or weakness of the rand. When the rand weakens, assets priced in foreign currencies become more valuable in rand terms, which helps protect your purchasing power over time.

Is it legal for South Africans to invest offshore?

Yes. South African tax residents may invest offshore within the limits set by the South African Reserve Bank’s exchange control rules. Individual investors have a foreign investment allowance they can use without applying for specific approval. You can read more in the guide to investing offshore from South Africa legally.

Can I achieve currency diversification inside my retirement annuity?

Yes, within limits. Regulation 28 of the Pension Funds Act currently permits up to 45% of a retirement annuity’s assets to be invested offshore. You need to select a fund mandate that targets this higher allocation and confirm what the fund is actually holding, not just what the mandate allows.

Does currency diversification protect me from inflation?

Partly. Offshore assets can protect you from rand-specific inflation driven by currency depreciation. They do not protect you from global inflation, which affects all asset classes. Gold as an inflation hedge is one tool some investors use alongside currency diversification to address the inflation dimension specifically.

What happens to my offshore investments if I emigrate from South Africa?

If you formally cease to be a South African tax resident, your worldwide assets, including offshore holdings, are treated as having been disposed of on the date you cease tax residency for South African capital gains tax purposes. This deemed disposal can trigger a significant CGT liability. The planning that happens before you emigrate is very different from the options available after the fact, so take specific tax advice well in advance.

How do I know if my retirement fund is actually invested offshore as promised?

Request a copy of your fund’s latest quarterly or annual fact sheet from your retirement annuity provider. It will show the asset allocation, including the percentage held offshore. If the allocation is below the fund’s stated mandate, ask why. Some funds under-allocate to offshore because of market conditions or operational choices; knowing which is true for your fund matters.

Is there a “best time” to move money offshore?

No. Trying to time currency movements is as futile as timing the market. What matters is building a consistent offshore allocation over time and rebalancing when it drifts out of line with your target. Systematic investing beats market timing every time.

The Bottom Line on Currency Diversification

Currency diversification is a sound long-term strategy for most South African retirement investors. Given the rand’s well-observed structural vulnerability and the length of a typical retirement, holding some portion of your wealth in foreign currencies reduces concentration risk and protects your real purchasing power over time.

But it is not without cost. Fees are higher, tax reporting is more complex, and sequencing risk in drawdown is real. The right offshore allocation depends on your obligations, your tax position, your time horizon, and whether you plan to spend in rands or abroad.

For someone with savings spread across a retirement annuity, a preservation fund, a living annuity, and a discretionary account, each potentially holding R5 million to R20 million, the decision cannot be made fund by fund. It requires a consolidated view of what each structure is holding, what it is taxed at, and how the income flows fit together across the life of your retirement. That consolidated view also affects what passes to your beneficiaries, since the way a living annuity is nominated and structured determines whether the remaining capital reaches them at all. For the wills, trusts and estate planning decisions that sit alongside this, I work with the estate planning specialists at Gradidge Mahura Investments.

Start with a clear picture of your financial situation. A solid retirement planning foundation comes first. Currency diversification is one layer within a well-constructed plan, not a substitute for getting the basics right. And remember that staying invested consistently over the long term does more for most investors than any single allocation decision.

The question worth sitting with is this: if the rand continues on its historical trajectory over the next 25 years, will your retirement income hold its value? If the answer is no, currency diversification is not something to defer. It is worth building into your plan now, across all your structures, in the right order.

For a broader look at how currency exposure fits into a complete retirement strategy, the preparing for retirement guide sets this in the context of income planning, drawdown order, and tax-efficient investing across your structures. If you would like to review how your current portfolio is positioned, get in touch for a private consultation.

This article is general information and not personal financial advice. Consult a qualified financial adviser before making changes to your portfolio or retirement plan.