Inflation is the slow confiscation of wealth that receives less attention than the dramatic losses — a market crash, a fraud, a currency crisis — but does more cumulative damage to the typical investor over a lifetime. At 3% annual inflation, £1 million becomes worth about £744,000 in real terms in 10 years, and £554,000 in 20 years, without a single bad investment decision. The investor who does nothing loses more than a third of their purchasing power in two decades.
Understanding which assets protect against inflation — and which do not — is one of the most practically important things an investor can know.
The long-run evidence: what actually works
Equities: the strongest real-return asset over time
The long-run evidence on equities and inflation is unambiguous across multiple countries and time periods: equities significantly outperform inflation over periods of 10–20+ years. UK equities have historically delivered real returns (above inflation) of around 5% per year over rolling 20-year periods, though with substantial variation from year to year. Global equities show similar patterns.
The mechanism is straightforward: companies can raise prices when their own costs rise (pricing power), so revenues in nominal terms tend to track nominal economic growth. Profits follow, and so do share prices over the long run. This is not a perfect relationship — some companies have poor pricing power, and short-term equity returns can be highly negative during inflationary shocks — but over 10+ years, equities are the most reliable hedge against purchasing power loss.
This has a critical implication for international investors: the appropriate asset to hold for long-term inflation protection is not a cash account or a fixed bond, but an internationally diversified equity portfolio.
Fixed nominal bonds: inflation's enemy
Fixed nominal bonds are among the worst assets to hold during periods of unexpected inflation. A bond paying 4% annually while inflation runs at 6% is delivering a real return of approximately -2% per year. The longer the bond's duration, the more its market price falls when inflation expectations rise.
This was demonstrated sharply in 2022, when rising inflation caused global bond markets to experience their worst year in a century. Investors who held significant bond allocations as inflation surged faced losses that were genuinely surprising to many portfolio managers who had relied on bonds as "safe" assets.
Bonds are not worthless as portfolio components — they provide liquidity, income, and genuine diversification — but they should not be relied upon as inflation protection.
Property: broadly tracks inflation over the long run
Residential property has historically tracked broad inflation reasonably well over 20+ year periods, though with significant geographical and temporal variation. Property is a physical asset with intrinsic value, rents are periodically reset, and construction costs (which tend to rise with inflation) provide a floor. However, property is not a precise inflation hedge: valuations are also driven by interest rates (property valuations typically fall when real rates rise), demographics, planning constraints, and leverage levels in the buyer population.
For international investors already holding property, the inflation-hedging characteristic is a genuine benefit. Building a portfolio primarily from property for inflation protection purposes introduces concentration risk and liquidity risk that outweigh the inflation-hedge benefit.
Gold: patchy short-term, stronger over decades
Gold's reputation as an inflation hedge is partly deserved and partly overstated. Over very long periods — decades — gold has broadly preserved purchasing power. Over shorter periods of 1–5 years, the relationship between gold and inflation is weak; gold can significantly underperform or outperform inflation depending on factors (real interest rates, dollar strength, investor sentiment) that are only loosely related to inflation.
In practical terms: gold is a reasonable small allocation (5–10%) as a store of value and as insurance against tail risks (currency crises, systemic financial stress), but it should not be the primary vehicle for inflation protection.
Specific inflation-protection instruments
Index-linked gilts and TIPS
UK index-linked gilts are government bonds where both the coupon and principal are adjusted in line with RPI (Retail Price Index). US Treasury Inflation-Protected Securities (TIPS) work similarly, linked to the CPI. These instruments provide guaranteed real returns — the return above inflation is fixed at purchase.
The catch is that in 2026, real yields on index-linked gilts are positive but modest, and the duration of these instruments means they carry interest rate risk if rates rise further. They are better thought of as preserving capital in real terms than as generating real returns.
For internationally mobile investors outside the UK, the currency mismatch (holding GBP-denominated instruments when your expenditure is in another currency) reduces the inflation-protection benefit.
Inflation-linked corporate bonds
Some corporate bonds also have inflation-linked coupons, offering higher yields than government equivalents in exchange for credit risk. Utilities and infrastructure companies with inflation-linked revenue streams are natural issuers. These can be accessed through specialist funds.
REITs (Real Estate Investment Trusts)
REITs provide access to institutional-quality commercial property (offices, retail, industrial, residential, healthcare, storage) through listed securities. REIT dividends tend to track rental income, which often has inflation-linkage built into leases. As listed securities, REITs offer daily liquidity unlike direct property.
The caveat: REITs performed poorly in 2022 as rising interest rates compressed valuations. Listed REITs are more correlated with broader equity markets than direct property, particularly in periods of market stress.
Commodity exposure
Commodities are inflation's source rather than victims: when food, energy, and materials prices rise, commodity producers benefit. A modest allocation to broad commodity exposure (through an ETF tracking a commodity index) can provide inflation hedging, particularly when energy is a significant component. However, commodity returns over the long run are volatile and structurally low — they do not generate the long-term real returns that equities do.
The real return mindset
One of the most useful habits successful investors develop is thinking consistently in real (inflation-adjusted) terms rather than nominal terms. A 6% return sounds satisfying; at 4% inflation, it is a 2% real return. A portfolio of 5% fixed bonds sounds like income; at 3% inflation, the investor is barely preserving purchasing power and not at all if tax is considered.
The practical implications:
- When comparing investment returns across periods of different inflation, use real terms.
- When planning for retirement income, estimate your required income in today's prices, then model the nominal income needed to maintain that real standard of living at 2–3% annual inflation.
- When evaluating a "safe" cash or bond-heavy strategy, calculate what it delivers in real terms, not just nominal.
The cost of doing nothing
The worst inflation strategy is the most common one: doing nothing and holding excess cash. In 2026, savings account rates in the UK are above recent norms — broadly in the range of 4–5% for easy-access accounts. This looks acceptable. But if inflation averages 2–3% over the next decade (which remains the central expectation), real cash returns are slim. If inflation surprises to the upside (which it can do in ways that are hard to predict), cash loses purchasing power in real terms.
Holding three to six months of expenses in accessible cash is sensible prudence. Holding 50% or more of an investment portfolio in cash is a choice to accept long-term purchasing power erosion in exchange for psychological comfort. Over 20–25 years, the cost of that comfort, compounded, is enormous.
A practical framework
For an internationally mobile investor with a 10–20 year horizon, an inflation-protective portfolio might include:
- 50–70% global equities (the primary long-term inflation hedge)
- 10–15% real assets: property (direct or through REITs), infrastructure
- 10–20% bonds for liquidity and income (with a preference for shorter duration given inflation uncertainty; some index-linked exposure)
- 5–10% alternatives including commodities and gold as tail-risk insurance
- Cash (3–6 months expenses) maintained separately, not as part of the investment portfolio
The precise allocation depends on individual circumstances, time horizon, and risk tolerance. The principle is consistent: inflation protection requires owning real assets and equities, not hiding in cash.
The value of investments can fall as well as rise. Past performance is not a reliable indicator of future results. Inflation-linked investments do not guarantee protection against inflation in all time periods. This article does not constitute personal financial advice. Always seek independent professional advice appropriate to your circumstances.
How Global Investments can help
Our advisers help internationally mobile clients build portfolios with genuine real return objectives — accounting for currency exposure, tax jurisdiction, and long-term purchasing power. Speak to our team to review your current portfolio's inflation resilience.
This article is for general information only and does not constitute financial, legal or tax advice. Rules, prices and regulations change; verify current requirements with a qualified adviser before acting.