For years the fixed-rate decision came with a price signal attached. Committing for five years cost meaningfully more, or meaningfully less, than committing for two, and that gap told you what the market believed about where rates were heading. You could disagree with the market, but at least it had an opinion, and it charged you for taking the other side.
Right now, it barely has one. On Moneyfacts averages from late August, a typical two-year fixed rate sits at about 5.61% and a typical five-year at about 5.64%. Three basis points. On a £200,000 mortgage that is roughly £5 a month. Those are averages of advertised rates rather than quotes, but the shape is the point: the market is charging you almost nothing to choose either way.
That sounds like good news, and in one sense it is. But it also quietly removes the crutch most borrowers leaned on. When one option is clearly cheaper, you can tell yourself the decision made itself. When the pricing is flat, the decision is entirely yours, and it has to be made on something other than price.
Why the gap closed
We looked at why mortgage rates moved the way they did this year in a previous piece, and the short version bears repeating: fixed rates are not priced off the Bank of England base rate. They are priced off swap rates, which is the cost lenders pay to lock in money for a set period, and swaps reflect where the market expects rates to be over that period.
When two-year money and five-year money cost a lender about the same, the market is saying it expects rates over the next five years to average out at roughly the level of the next two. No steep cuts priced in, no fresh spike priced in. Base rate has now been held at 3.75% for five consecutive meetings, with the next decision due on 17 September. Flat expectations, flat pricing.
The market has been wrong before, on both sides, and anyone who fixed in early 2022 or refixed in late 2023 knows it. But “the market expects roughly nothing” is the honest starting position, and it means the useful question is no longer which fix is cheaper. It is which fix fits your life.
The bet you are making either way
Strip away the jargon and the two products are two different bets, and it helps to see them side by side.
| If rates… | The two-year fixer | The five-year fixer |
|---|---|---|
| Fall meaningfully | Refixes cheaper in 2028, wins | Watches from inside a 5.64% contract |
| Stay about the same | Pays remortgage costs again in two years for nothing | Saves a round of fees and admin, wins slightly |
| Rise meaningfully | Refixes at the worse rate, loses | Sleeps well until 2031, wins |
| Your life changes | Was getting out soon anyway | Faces an early repayment charge to leave |
The last row is the one people skip, and it is usually the one that ends up mattering. Early repayment charges on a five-year fix commonly start around 5% of the balance and step down each year. On a £200,000 loan that can mean £10,000 to leave in year one. Most five-year products are portable, meaning you can in principle carry the rate to a new property, but porting is an application, not a right. The lender reassesses you at the time, and if your circumstances have dipped, the port can be refused and the charge lands anyway.
So the five-year fix is not really a bet on interest rates. It is a bet on your own life staying still: same house, same relationship, same income shape, for five years. Some people can make that bet comfortably. A lot of people in their twenties and thirties honestly cannot, and a slightly cheaper monthly payment is poor compensation for a five-figure exit fee.

The choice that is always wrong
While the two fixes are finely balanced, there is a third option that is not balanced at all, and that is doing nothing. When a fixed deal ends and no new deal replaces it, the loan rolls onto the lender’s standard variable rate, and the average SVR is currently about 7.13%. Against either fix, that is roughly £180 a month more on a £200,000 repayment mortgage from the day it happens.
People lapse onto the SVR for two reasons. Some simply miss the date, which is fixable with a calendar reminder six months out, since most lenders let you book a new deal three to six months before the current one ends. Others freeze because they cannot decide between products, which is the expensive irony of this whole subject: agonising over a £5-a-month difference while paying £180 a month for the privilege of not choosing.
If your credit file is not clean
One honest caveat. Everything above assumes the market is open to you, and if the last couple of years left missed payments or worse on your file, the fix-length debate is a luxury that comes second. As we covered in what the broker said about mortgages with missed payments, the meaningful question for those borrowers is which lenders will have them at all, and the product menu follows from that answer rather than leading it. Get approved first, optimise fix length within whatever that lender offers, and treat the full market as something to come back to at the next renewal, when the file is two years cleaner.
Frequently asked questions
Is a three-year fix a sensible compromise? Sometimes. Fewer lenders offer them, so the pricing is often slightly worse than the market’s best two- and five-year deals, but if 2028 lands awkwardly for you, a 2029 renewal date can be worth paying a little for.
Should I wait for the September decision before fixing? You can usually have it both ways. Because offers can be booked months ahead, you can secure a deal now and, with many lenders, still switch if a better rate appears before completion. Waiting with nothing booked is the only version of this with real downside.
Do trackers make sense while the gap is this small? Trackers suit people who genuinely might repay or move at short notice, since many carry no early repayment charge. As a pure rate bet they only win if cuts come faster than the market expects, which is exactly the bet the flat fix pricing says the market is not making.
What actually decides it, then? Your honest five-year horizon. If you can say with a straight face that you will be in this property, with this mortgage, in 2031, the five-year fix buys certainty at almost no premium. If you hesitated while reading that sentence, the two-year fix is the price of keeping your options open, and right now that price is about £5 a month.
The vanishing gap between two and five-year money will not last forever. When it reopens, the market will go back to nudging you toward one answer. While it lasts, the decision is unusually pure: not a rates call, just an honest look at how still your life is likely to stand. That is a harder question than reading a comparison table. It is also the only one worth answering.
