How Inflation Erodes Retirement Savings — and What to Do About It

Inflation is described as a "silent" wealth destroyer because its effect is invisible from year to year but devastating over decades. A pension pot that feels substantial at retirement can, if not protected against inflation, deliver a steadily declining standard of living as the years pass. For internationally mobile retirees drawing income in one currency while spending in another — or spending in a country with a different inflation rate from the country where their pension is invested — the challenge is further complicated.

The maths of inflation erosion

Consider a simple example. A pension pot of £1,000,000 at retirement. In real purchasing power terms — adjusting for inflation — what is that worth after twenty years?

At 2% annual inflation: the purchasing power falls to around £670,000 in today's money. At 3% annual inflation: it falls to around £550,000. At 4% annual inflation: it falls to around £450,000.

These are not extreme scenarios — they represent inflation rates that many developed economies have experienced across different periods. Moving from 2% to 4% annual inflation, compounded over twenty years, reduces the surviving real purchasing power by roughly a third (from about £670,000 to about £450,000 in this example).

For retirees who intend to draw a fixed income from their pension — taking £40,000 per year, for example — the real value of that income falls every year. At 3% inflation, to buy in ten years' time what £40,000 buys today you would need roughly £54,000. By year twenty you would need around £72,000 to match the same purchasing power — put the other way, a flat £40,000 nominal income drawn in year twenty would buy only about £22,000 of goods at today's prices, meaning the retiree's standard of living has significantly declined unless the income rises to keep pace.

Different countries, different inflation rates

For internationally mobile retirees, the relevant inflation rate is not necessarily the one in the country where their pension is invested — it is the rate in the country where they actually spend their money.

Inflation rates vary materially across countries:

Switzerland and Japan have historically experienced very low inflation — sometimes near zero or briefly negative. Retirees living in these countries face less purchasing-power erosion than equivalents elsewhere.

UK and EU have targeted inflation rates of 2%. In practice, actual outcomes have deviated from this — sometimes significantly, as seen during 2021–23 when inflation rose sharply. Over the long run, 2–3% is a reasonable planning assumption for UK and eurozone spending.

Emerging markets — Turkey, Egypt, Argentina, and others — have experienced very high or hyperinflationary episodes. Holding savings in the local currency of a chronically high-inflation country is extraordinarily destructive to purchasing power. This is a reason to hold savings in strong, stable currencies even when living in a higher-inflation jurisdiction, and to convert local-currency expenses regularly rather than allowing savings to degrade.

The practical implication: match your savings currency to your long-run spending currency. If you intend to spend your retirement in Cyprus in euros, a sterling-denominated pension may be less appropriate than euro-denominated savings — not because sterling is weak, but because the exchange rate will fluctuate and inflation rates in the UK may differ from those in Cyprus.

The particular danger of cash in retirement

Cash feels safe. In nominal terms, the number in your bank account does not decline. But in real terms — in terms of what that money can buy — cash held at interest rates below inflation loses purchasing power every year.

A retiree who holds a substantial portion of their retirement capital in cash because it "feels safer" may find that:

• At 3% inflation, purchasing power halves approximately every 24 years
• A cash portfolio that felt adequate at 65 may be meaningfully diminished in real terms by age 80 — the very period when healthcare and care costs are likely to be rising

The appropriate role of cash in retirement is as an income buffer — ideally one to two years of expected expenditure, allowing the rest of the portfolio to remain invested in growth assets without the need to sell at the wrong time. Beyond this buffer, holding excessive cash is a guaranteed way to slowly reduce the real value of your wealth.

How to inflation-protect a retirement portfolio

Global equities. Over sufficiently long periods, global equities have historically delivered returns well above inflation. Equities represent ownership of businesses that can, in aggregate, pass on rising costs to customers, so their earnings tend to grow in line with or above inflation over time. This does not mean equities are safe in the short run — market drawdowns can be severe and prolonged — but for investors with a long enough time horizon, equities provide the most reliable inflation protection.

Index-linked bonds. Index-linked gilts (UK) and TIPS (US) are government bonds whose principal and interest payments are linked to inflation. They provide a direct hedge against inflation — if inflation rises, so does the income from these bonds. They carry interest rate risk and are not the same as holding cash, but they provide more reliable real-return protection than conventional fixed-coupon bonds, which lose real value when inflation rises unexpectedly.

Property. Over long periods, property values and rents have broadly tracked inflation, providing a degree of real asset protection. The complications of direct property ownership (transaction costs, management burden, SDLT, illiquidity) mean that listed REITs may be a more efficient vehicle for this exposure for internationally mobile investors.

Commodities and gold. Broad commodity exposure and gold have historically provided some inflation hedging, though their short-run correlation with inflation is imperfect. They are most useful as part of a diversified portfolio rather than as standalone inflation hedges.

Floating-rate bonds. Bonds with variable interest rates — where the coupon rises with short-term interest rates — provide a measure of protection against rising-rate environments, which often accompany inflationary periods. Examples include bank loans (credit risk required) and certain bond funds targeting floating-rate income.

Infrastructure. Many infrastructure assets — toll roads, utilities, airports — have revenues linked to inflation through regulatory frameworks or contractual arrangements. Listed infrastructure funds provide exposure to these assets with reasonable liquidity.

Inflation-adjusting your drawdown

If you are in retirement drawing down a portfolio, the most common mistake is drawing a fixed nominal amount each year without adjusting for inflation. This is the equivalent of accepting a real pay cut every year.

A simple approach: increase your annual withdrawal amount each year by the relevant inflation rate (using the CPI rate for your country of spending). This preserves your standard of living at the cost of a slightly faster portfolio drawdown rate — which must be factored into your retirement income modelling.

At 3% inflation, £40,000 today needs to rise to around £53,750 in ten years to maintain the same purchasing power. Plan for this from the outset, not as an afterthought.

Dynamic withdrawal strategies — which adjust withdrawals downward in years of poor portfolio performance and upward in years of strong performance — provide more resilience than fixed withdrawal rates, at the cost of some income uncertainty.

Currency and inflation: the internationally mobile retirement

For internationally mobile retirees who move between countries, or who draw a UK pension while spending in euros, dirhams, or baht, the interaction between exchange rates and local inflation adds another dimension.

Currency strength and local inflation are loosely related but imperfectly correlated. A retiree drawing a UK State Pension in sterling while spending in a country where the pound has weakened faces a real income reduction even if UK inflation is low. Holding a portion of retirement savings in the currency of the country where you plan to spend protects against this — though it introduces its own complexities.

The practical advice is to build a multi-currency approach to retirement income planning, matching income sources to spending currencies where possible, and ensuring that professional advice accounts for exchange rate risk as well as inflation.

---

This article is for general information purposes only. Projected returns and inflation rates are illustrative and not guaranteed. The value of investments, including their income, can fall as well as rise. Past performance is not a reliable guide to future returns. Global Investments recommends seeking independent financial advice tailored to your circumstances — contact us to speak with our team.