The gap between two-year and ten-year Treasury yields has narrowed to eleven basis points, the tightest it has been since the spring of 2024. Every time this happens we get the same question from customers on both sides of the balance sheet: should I fix?
The honest answer is that a flat curve tells you less about the future than most commentary suggests. It tells you a great deal about what the market currently believes — which is a different thing, and considerably more useful once you know how to read it.
What actually happened
Over the last four months short-dated yields have fallen roughly forty basis points while ten-year yields have barely moved. That is not a market pricing in a recession; it is a market pricing in a slower, shallower easing cycle than it expected in January, combined with persistent supply at the long end.
For a saver, the immediate effect is that the premium for locking money away for five years instead of one has almost disappeared. Our own certificate pricing reflects this: the 60-month rate is now below the 36-month, which looks strange until you remember it is a direct read of the curve.
A flat curve does not predict a downturn. It tells you the market has stopped being paid to wait — and that changes the arithmetic on every fixed-rate decision you are about to make.
Why the shape matters more than the level
Most people anchor on the headline rate. The shape of the curve is the more actionable signal, because it prices the cost of optionality — and optionality is precisely what you give up when you fix.
- Steep curve: you are paid meaningfully to commit for longer. Fixing has an obvious carry benefit.
- Flat curve: you commit for longer and receive almost nothing extra. You are buying certainty at close to full price.
- Inverted curve: you are paying for the privilege of committing. Sometimes still rational — but it should be a deliberate choice, not a default.
We are firmly in the second case. That does not make fixing wrong. It makes it a decision about your own tolerance for the rate moving against you, rather than a decision about maximising expected return.
Fix or float?
Three questions, in this order, resolve most cases:
- Would a 150bp move against you change your behaviour? If a higher payment would mean cutting something that matters, fix. Certainty has genuine value and you should be willing to pay for it.
- How long is your actual horizon? Not the product term — the point at which you might move, sell, or repay. Fixing for five years when you expect to move in two is buying insurance you will throw away.
- What is the break cost? On a Rielora Capital mortgage it is zero, which materially changes the calculation. On products with early repayment charges, a five-year fix is a much heavier commitment than it appears.
What we would do
For borrowers with a horizon under three years and no early repayment charge, we would lean toward the shorter fix and accept the reset risk. The curve is not paying enough to justify locking a decade of payments at today's level.
For savers, the reverse applies more strongly than usual. Deposit rates typically fall faster than they rise — banks pass cuts through more quickly than increases, a phenomenon known as deposit beta asymmetry. If you have cash you genuinely will not need, a 12 or 24-month certificate at today's pricing looks reasonable value even with a flat curve, precisely because the downside risk to variable savings rates is larger than the upside.
Our assumptions, stated plainly
We publish these so you can disagree with them:
- Two further 25bp policy cuts by the end of Q2 2027, front-loaded.
- Inflation settling in a 2.2–2.6% band rather than returning cleanly to target.
- No credit event large enough to force an emergency response.
- Long-end supply remaining heavy through 2027.
If you think the second assumption is wrong — and it is the one we are least confident about — the conclusion for savers strengthens and the conclusion for borrowers reverses. That is the useful part of writing assumptions down.
This article is illustrative sample content produced for a website template. It is not investment advice, does not describe a real institution, and should not be relied upon for any financial decision.
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