Stop Calling Gilts Risk-Free — You’re Lending, Not Saving

There is a phrase in finance that does more heavy lifting than any other: ‘risk-free’. It gets attached to UK government bonds like a safety sticker on a child’s bicycle. Gilts are treated as the bedrock of portfolios, the ultimate collateral, the thing you hold when you want to take no risk at all. But that label is a regulatory convenience, not an economic guarantee. And in 2026, with the Bank of England still shrinking its balance sheet and the government issuing debt at a pace that would make a Victorian railway baron blush, the ‘risk-free’ tag is doing more harm than good.

The buyer of last resort has left the building

For most of the past fifteen years, the Bank of England was the gilt market’s most reliable customer. Quantitative easing meant the central bank hoovered up hundreds of billions of pounds of government debt, pressing down yields and making the whole edifice look stable. That era is over. Quantitative tightening is still running. The Bank is no longer buying; it is selling — or at least letting bonds roll off its balance sheet. At the same time, the Debt Management Office is issuing new gilts to fund a deficit that shows no sign of disappearing.

The result is a market where the marginal buyer is no longer a price-insensitive central bank. It is a pension fund, a bank, a foreign reserve manager, or a retail investor in a gilt fund — all of whom care about price. That is not a bug. It is what a normal bond market looks like. But it means the ‘risk-free’ label is misleading. When the buyer of last resort steps away, the price of the asset is set by people who can say no.

Default risk is not the danger. Policy risk is.

The consensus argument for gilts goes like this: the UK government borrows in its own currency, it can tax and it can print, so it will never default. True enough in nominal terms. But ‘no default’ is a low bar. The risk that matters to a saver is not that the UK Treasury hands back 80p in the pound. It is that the pound in your pocket buys less, or that the price of the bond falls when you need to sell it, or that the government changes the rules of the game halfway through.

Policy risk has replaced default risk as the main hazard. That can take several forms. Inflation erodes the real value of fixed coupons. A fiscal event — a Budget that spooks the market, a spending pledge that does not add up — can send yields sharply higher. A change to tax treatment, to indexation, or to the Bank’s remit can change the value of a gilt overnight. And with debt levels where they are, the temptation to let inflation do some of the work is always there. None of that shows up in a credit rating. All of it shows up in your real return.

The 2022 LDI crisis is the obvious historical example. Gilts did not default. But the price action was violent enough to force pension funds to sell assets at fire-sale prices. That is policy risk and duration risk in action, not default risk.

Short-dated gilts and money-market funds are not cash

This is where savers get caught. A short-dated gilt fund, or a money-market fund that invests in Treasury bills and bank deposits, feels like cash. The price barely moves. The yield is better than a current account. What’s not to like? The problem is that ‘barely moves’ is not the same as ‘cannot move’. And a fund that aims to maintain capital is not a bank deposit with a government guarantee.

Short-dated gilts still have duration. Even a two-year gilt loses value if yields rise by a percentage point — not much, but enough to wipe out months of carry if you sell at the wrong moment. Money-market funds are regulated and tightly managed, but they are not insured. They can impose liquidity fees or gates in extreme conditions. And they hold instruments — commercial paper, certificates of deposit, repo — that carry their own small risks. The Bank of England’s own financial stability reports have spent years warning about the fragility of non-bank liquidity. A money-market fund is a very good product for what it does. It is not a savings account.

What to check before you call anything risk-free

First, look at duration. A fund’s ‘short-dated’ label can mean anything from six months to five years. Check the actual modified duration. If it is above two, you are taking interest-rate risk, even if it does not feel like it.

Second, ask what you are lending against. A gilt is a loan to the UK government. A money-market fund is a loan to a pool of banks and corporates. A bank deposit is a loan to your bank, backed by the Financial Services Compensation Scheme up to £85,000 per person per institution. These are different credits with different protections. Do not treat them as interchangeable.

Third, check the spread. If a short-dated gilt fund yields only a whisker more than a competitive savings account, you are not being paid for the extra complexity. If it yields a lot more, ask why. The market is not in the habit of handing out free lunches.

Finally, think about the exit. If you might need the money in a hurry, a fund that trades at net asset value is not the same as cash in your pocket. In stressed markets, the difference can be painful.

The bottom line

Gilts are a legitimate tool for managing money. They are liquid, transparent, and backed by the UK government’s taxing power. But ‘risk-free’ is a phrase that belongs in a textbook, not in a savings decision. In 2026, the gilt market is a bet on fiscal policy, central bank behaviour, and inflation. That is not a reason to avoid it entirely. It is a reason to stop pretending it is the same as cash — and to check what you are actually lending, to whom, and for how long.