Protecting a portfolio against inflation means more than holding assets that have beaten inflation over long periods. It means matching the hedge to the window when your spending is actually sensitive to rising prices – which may not be the same window when equities or property happen to outpace the RPI. UK CPI was 2.8% in April 2026; the Bank of England's own central forecast puts it rising to 3.1% in Q2 and 3.3% in Q3. For investors approaching retirement, the question is not "does my portfolio protect against inflation on average?" – it is "does it protect against inflation in the decade when my drawdown begins?"
Why does inflation erode a portfolio even when you are not paying attention?
Inflation's damage is cumulative and quiet. A 3% annual rate does not announce itself – it compounds into a 34% reduction in real purchasing power over a decade. By the time the erosion is visible in a pension statement, the damage has already been done.
The FCA's standard pension projection framework uses an inflation assumption of 2.5%. UK CPI was 2.8% in April 2026 (ONS). The Bank of England's Monetary Policy Report, published 30 April 2026, forecasts CPI rising to 3.1% in Q2 and 3.3% in Q3 – driven by energy price inflation that hit 10.9% in April, with the Ofgem cap expected to rise further in July. In the Bank's high-severity scenario, CPI peaks above 6% in early 2027.
None of this appears in the pension statement on your desk. That statement shows a nominal projected pot, built on a 2.5% assumption, for a single account, at a single future date. It does not show what that pot buys in real terms across a 30-year drawdown. It does not adjust when the MPC revises its forecast. The gap between what the statement implies and what the money will actually fund is not a rounding error – it is the core planning problem.
Protecting future cashflows from inflation requires knowing which assets in your portfolio actually hedge inflation – and at what time horizon.
Do real estate, equities, and bonds actually protect against inflation?
The standard answer is that property and equities are inflation hedges; nominal bonds are not. The data makes that answer considerably less comfortable.
Real estate. It is often assumed that owning property provides reliable inflation protection. Over very long periods, this is broadly true. But "long periods" conceals a timing problem that matters for planning.
Consider the London House Price Index from January 2011 to November 2025. Over the full period, house prices and the Retail Price Index have appreciated at roughly similar rates – the headline comparison appears to confirm the inflation hedge. Split the data and the story changes.
From January 2011 to April 2018, London house prices rose by approximately 66%, while RPI increased by 22%. Property massively outpaced inflation during the low-inflation period.
From April 2018 to November 2025, house prices increased by approximately 8%, while RPI rose 45%. As inflation actually arrived, property stopped keeping pace.
The hedge worked when it was not needed. When inflation came, the protection had already been spent. For an investor whose retirement begins in 2025–2030, this is the exact mismatch that matters. Their property's real value relative to inflation is lower now than at any point in the past seven years. They may have planned as if the protection were still in place.
Equities. The assumption that equities provide long-run inflation protection is widely held. The academic evidence on its reliability at planning horizons is more equivocal. Research using 230 years of UK equity and inflation data – using wavelet analysis to isolate behaviour at different time frequencies – finds no consistent evidence that UK equities hedge inflation at business-cycle horizons (typically 3–7 years).
The mechanism that explains this is regime-dependence. In low and stable inflation, equities and government bonds tend to have a negative return correlation – when one falls, the other rises, and a diversified portfolio is partially self-hedging. In high or volatile inflation, that correlation turns positive. Rising inflation drives monetary tightening; tightening suppresses both equity valuations and bond prices simultaneously. BIS research on inflation-hedging portfolios across different regimes confirms this: the 60/40 construction that works in disinflationary environments is the one that breaks down when inflation is the problem.
Nominal fixed income. Here the inflation damage is unambiguous. A fixed coupon worth less in real terms as prices rise; bond prices fall as yields rise to compensate. Nominal bonds do not hedge inflation – they are directly harmed by it.
What is an inflation-linked gilt, and how does it provide a direct hedge?
An index-linked gilt is a UK government bond whose coupon payments and principal repayment are both adjusted for RPI. If inflation runs at 4% over the life of the bond, both the income stream and the redemption value increase by that amount. The real yield – the return above inflation – is fixed at issuance and delivered in full if the bond is held to maturity.
This is a mathematical guarantee (backed by the UK government), not a correlation estimate. The hedging property is contractual.
As of 12 May 2026, the UK 10-year index-linked gilt was yielding 1.65% above RPI, with RPI running at 4.1%. This is the highest available real yield since 2009. For comparison: the 10-year nominal gilt yields 5.07%, implying a breakeven inflation rate of approximately 3.4%. If actual RPI over the next decade runs above that breakeven, the index-linked gilt delivers a better real return than the nominal gilt. The Bank of England's own Q3 2026 CPI forecast – which typically runs below RPI – is 3.3%. The gap between the breakeven and the central forecast is narrow.
The mark-to-market risk of index-linked gilts must be understood clearly. If real yields rise after purchase – as they did sharply in 2022 – the market value of an existing linker falls, especially for longer maturities. This is the same mechanism as any fixed-income instrument. Holding the bond to its maturity date removes this risk: the contractual real return is delivered regardless of what market yields do between purchase and redemption. For investors who wish to have the option to sell before maturity, the mark-to-market exposure is real and should be priced into the purchasing decision.
How do you match inflation protection to your actual spending horizon?
Liability-driven investors – pension funds, insurers, endowments – use a discipline called duration matching: aligning the maturity of the inflation hedge with the timing of the inflation-sensitive liability. A pension fund meeting RPI-linked obligations in 2030 does not use a 30-year linker for that purpose. It uses an instrument that matures close to the obligation date.
The same logic applies at a portfolio level.
For near-term liabilities – drawdown beginning in 2027 or 2028 – liability-driven investors use short-duration instruments. Cash savings above 4.5% in easy-access accounts (Moneyfacts, May 2026) provide a real return at current CPI; short-maturity index-linked gilts offer a more direct contractual alternative for the same horizon. For medium-term spending through the 2030s, intermediate-duration linkers match the liability more precisely. The organising principle is duration matching: the maturity of the instrument tracks the timing of the liability.
The common mistake in personal portfolios is using one equity and property position as a proxy for inflation protection across all future spending simultaneously. A 2011–2018 property gain does not hedge a 2025 spending liability. A long-run average equity real return does not hedge a drawdown that begins in a high-inflation year. The timing of the protection has to match the timing of the need.
No single asset class hedges inflation reliably across all conditions. Institutional portfolios typically hold both short-term inflation-matching instruments – cash, short-duration linkers – and longer-duration exposure calibrated to the actual spend timeline. What that looks like in practice depends on the specific goals, the specific timing, and the specific balance sheet.
How Allocatewise applies this to your portfolio
Allocatewise applies liability-driven investing logic and Monte Carlo simulation – the analytical disciplines described above – to your SIPP, ISA, and savings as a single balance sheet.
The platform runs 1,000 Monte Carlo simulations on your portfolio against your specific goals, in real, inflation-adjusted terms. Every projection is in today's purchasing power, not in future nominal pounds. The simulation models what your combined assets need to do to fund your spending goals across the full distribution of simulated futures – including paths where inflation runs persistently above the FCA's 2.5% assumption.
The 1,000-simulation engine is available now. Goal-Aligned Allocation – which runs 10,000 simulations to illustrate an asset allocation aligned to your specific goals – is planned to launch on 1 June 2026. The methodology incorporates inflation regime inputs, allowing users to see how the probability of meeting their goals changes under different inflation assumptions.
Investors exploring the role of index-linked gilts can view current real yields within the platform and model how a gilt allocation affects the probability of meeting their goals – with cash flow matching applied automatically or set manually.
If you have spent more time thinking about what your portfolio is worth than about whether it hedges inflation in the decade when you will actually need it, that is the view worth building.
For more on how goal-aligned investing works in practice, see How do I align my investments with my real-life goals? – the first article in this series.
Conclusion
The question to ask of any portfolio is not "does it beat inflation on average?" That question can be answered with a CAGR and fifteen years of price data. The more useful question is: does it hedge inflation in the specific windows when my spending is most sensitive to it?
Real estate and equities have inflation-hedging properties over long time horizons. The timing of that protection is not guaranteed to coincide with the timing of the need. Index-linked gilts provide a contractual hedge – RPI-adjusted, maturity-dated, and currently available at the highest real yield entry point in 16 years. Matching the duration of the hedge to the timeline of the liability is the institutional discipline that most personal portfolios have not applied.
For the investor entering drawdown in the next decade, this is not an abstract question. The opening years of drawdown are the period when sequence risk and inflation risk are most destructive, and most likely to arrive together.
Simulations are illustrative scenarios based on the inputs and historical data used as assumptions. They are not forecasts or guarantees, and actual outcomes will differ. Allocatewise does not tell you what to buy. It does not replace an adviser or give regulated financial advice. It is designed to give you a clearer, structured view of your own portfolio – based on the input variables you provide. Capital at risk.
Not regulated by the FCA. Not financial advice.
Sources
- Office for National Statistics – Consumer price inflation, UK: April 2026. ons.gov.uk/economy/inflationandpriceindices/bulletins/consumerpriceinflation/april2026
- Bank of England – Monetary Policy Report, April 2026. bankofengland.co.uk/monetary-policy-report/2026/april-2026
- UK Debt Management Office – Index-Linked Gilt Data. dmo.gov.uk/data/gilt-market/index-linked-gilts/
- Dividend Data – Index-Linked Gilt Prices and Yields (12 May 2026). dividenddata.co.uk/index-linked-gilts-prices-yields.py
- Boako & Alagidede – Are stock returns an inflation hedge for the UK? Evidence from a wavelet analysis using over three centuries of data. Studies in Nonlinear Dynamics & Econometrics, 2019. repository.lboro.ac.uk/…/9498104
- Bank for International Settlements – BIS Papers No. 58: Inflation hedging portfolios in different regimes. bis.org/publ/bppdf/bispap58g.pdf
- Proprietary analysis: London House Price Index vs. UK Retail Price Index, January 2011 – November 2025. Source data: HM Land Registry / LonRes; ONS RPI series.
- Pensions and Lifetime Savings Association (PLSA) – Retirement Living Standards 2025/26. retirementlivingstandards.org.uk/library/2025-rls-update