The Mortgage Market’s Misleading Buy Signals
Introduction: The Danger of Buying on Fictional Signals
In today’s mortgage market, consumers are regularly bombarded with “headline rates”, slick illustrations, and alluring “best buy” tables. But buried within the details of these offerings lie calculations that can be actively misleading — Annual Percentage Rate of Charge (APRC), reversionary rates, and total cost over term; being the main offenders.
While these metrics were introduced with the aim of transparency, they risk distorting buyer decision-making. Too often, borrowers choose a mortgage product based on hypothetical, long-range assumptions — ignoring the far more practical reality that most borrowers don’t keep the same mortgage for 25 years; and likely shouldn’t. This article explains why it’s time to adopt new benchmarks.
What Are APRC, Reversion Rates, and Overall Cost — and Why Do They Mislead?
APRC (Annual Percentage Rate of Charge)
The APRC is intended to show the annual cost of a mortgage, averaged over the entire term (usually assumed to be 25 years), and including interest, fees, and charges. It’s meant to allow an “apples-to-apples” comparison between different mortgage products.
But this logic breaks down in practice. Most borrowers remortgage every 2 to 5 years. Few — if any — ride out their initial deal only to sit on their lender’s reversion rate for the next 20+ years. So, including that reversionary period in the APRC becomes not just irrelevant, but actively deceptive.
Moreover, by extending the calculation across decades, lenders can make a product look cheaper overall — even if it costs more during the period you’ll actually keep it.
Reversion Rates
The reversion rate is the variable interest rate you fall onto once your initial fixed, tracker, or discount deal expires. The rate is usually the lenders standard variable rate which itself is not formally tied to the Bank of England base rate and is entirely at the lender’s discretion to alter (although a few lenders may offer a reversion rate which is linked to the BOE rate with a significant margin applied).
The issue? Reversion rates can move significantly during the term of your initial deal. A lender whose SVR seems competitive today may be wildly uncompetitive two years from now. As the reversion rate is used in calculating the APRC, then the resulting figure is based on a complete fiction.
It also incentivises bad behaviour — the borrower who doesn’t switch products at the end of their term is effectively penalised, while the product looks better on paper to those who assume they’ll always remortgage. It’s a lose-lose.
Overall Cost Over Term
Mortgage illustrations show the “total cost” of a mortgage over the term, typically 25 or 30 years as well — treating the reversion rate as statis and assuming no changes in behaviour. Again, this assumes the borrower never switches lender, never redeems early, never moves house, and never makes overpayments. This is rarely the case.
And because this figure is calculated using the reversion rate for all years beyond the initial deal, it embeds the same misleading assumptions that plague the APRC.
Why the Reversion Rate Should Be Largely Ignored
For most customers, there is simply never a time to be on a reversion rate in day-to-day trading.
The circumstances where a reversion rate would be competitive are extremely rare. And even for someone who believes they are selling their home and have a new mortgage application in mind; the existing loan could frequently be converted to a deal with no early repayment penalties on a significantly lower rate and redeemed without loss.
If that house sale falls through though, and three months turn into a year, then that switch could save thousands and take a matter of hours to affect.
It’s extremely rare for a reversion rate to compete with new product offerings. So, unless you have such a small balance remaining on your mortgage that large changes in rates amount to differences of a couple of hundred pounds a year, the effort involved in switching is almost always warranted.
And yet: there is no regulatory obligation to advise customers to shop around before their deal ends, but there is an obligation to include outmoded cost indicators that bear little real-world value.
The Right Metric: Cost of the Initial Deal Period
If most borrowers remortgage every 2–5 years, then the most useful comparison metric isn’t the APRC — it’s the effective cost of the initial deal period, taking into account:
- Initial interest rate
- Product fees (including arrangement and valuation costs)
- Cashback or incentives
- Exit charges or early repayment charges (ERCs)
- Legal or broker fees (where applicable)
- Trailing interest (some lenders may lock you into a month of interest at the higher reversion rate at the end of the deal, equivalent to a hidden fee of a few hundred or even thousand pounds depending on loan size).
This provides a far more grounded basis for comparing one deal to another in a meaningful way — i.e., the way most borrowers actually behave.
But even this needs to be done properly. Comparing “costs” based on monthly payments alone ignores the amortisation structure — how your payments are split between interest and capital. A product with a slightly higher rate but lower fees might cost less overall over two years than a low-rate, high-fee option.
Why You Need to Use an Amortisation Calculator
Accurate product comparisons require more than looking at monthly payments or percentage rates. They require amortisation analysis — a breakdown of exactly how your loan is repaid over time.
A mortgage amortisation calculator allows you to:
- Compare total interest paid during the initial deal
- Assess the impact of fees and incentives
- See how early repayment or overpayments affect the cost
- Plan refinancing strategies with real figures, not illustrations
Far too many borrowers simply take a rate and apply it to the loan balance without factoring in fees, repayments, or even time. That’s not enough.
A robust amortisation tool is essential if you want to optimise your borrowing strategy over time — especially if you’re the kind of borrower who proactively manages your debt.
Conclusion: It’s Time to Retire APRC in Favour of Real Cost Comparisons
The APRC and total-cost-over-term metrics served a regulatory purpose. They aimed to force consistency in advertising and encourage disclosure. But they’re now little more than a compliance formality — and in many cases, a dangerous distraction.
The industry — and borrowers — need to focus on real costs, over real horizons, and ensure that product comparisons reflect how people actually manage their mortgages.
Until we replace the APRC with something that captures that reality — ideally, a cost-over-initial-period metric backed by amortisation data — buyers will continue to be lured by the wrong signals, and some will pay thousands more than they needed to.
A Common Question from Thoughtful Clients
One of the most frequent and understandable questions I hear from clients—particularly in times of economic uncertainty or media speculation—is:
“Should I wait to apply for my mortgage in case the Bank of England reduces the base rate?”
It’s a smart question, and it’s always wise to consider timing when making any major financial decision. However, the reality of how mortgage pricing works—particularly with fixed rate products—means that waiting rarely delivers the benefit clients hope for. In fact, it can often work against them. This article aims to unpack why that is, by taking a look at how fixed, tracker, and variable rates work, and how lenders operate behind the scenes.
How Fixed-Rate Mortgages Are Priced
Fixed-rate mortgages are not directly linked to the Bank of England base rate in the way some expect. While the base rate does exert influence on the overall interest rate environment, fixed mortgage pricing is typically based on market forecasts and expectations for interest rate movements over the term of the deal—usually 2, 3, 5, or 10 years.
Lenders use instruments like swap rates (essentially, what it costs them to borrow money for a set time) to set pricing. These swap rates are shaped by how financial markets predict interest rates will evolve, not by the rates themselves. So if a base rate reduction has been anticipated for weeks or months, the likely pricing impact will already have been “baked in” ahead of the Bank’s announcement.
A swap rate also encompasses other factors like Gilt and Bond Yields, that compete for funding but can work in converse relationships to central bank interest rates. So Swap rates could be increasing when Central Bank Rates are decreasing.
Moreover, lenders don’t update pricing overnight. Adjusting a product range involves not just repricing, but internal sign-offs, marketing updates, risk reviews, IT platform updates, and strategic planning. Lenders will also consider how aggressively they want to compete, what volume they aim to lend, and which customer profile they want to attract. Because of this, it can take days or even weeks for meaningful reductions to filter through—and even then, they may not be as significant as hoped.
Tracker, Variable, and Discount Rates: How They React to Base Rate Changes
Tracker products are somewhat an exception. These are directly pegged to the Bank of England base rate, typically with a small margin added (e.g., base +0.75%). This means they change almost immediately when the base rate moves. So, if you’re considering a tracker, there’s no need to “wait” for reductions—they’re automatic.
On the other hand, standard variable rates (SVRs) and discount rates, which are usually set by the lender, are a bit more opaque. While SVRs do tend to follow the Bank of England base rate over time, there is no obligation for lenders to pass on reductions at all—or to pass them on immediately. They may wait weeks or months, or choose not to reduce them at all, depending on internal margins, funding costs, and business strategy.
The Risk of Waiting for Rate Drops When Remortgaging
For clients looking to remortgage, the cost of waiting can be particularly high. If your current fixed deal is coming to an end, and you don’t secure a new product in time, you’ll usually revert to your lender’s SVR—which is often several percentage points higher than new fixed deals on the market.
If you delay applying in the hope that rates will drop, you risk:
- Falling onto the reversion rate, which is significantly more expensive.
- Running out of time to move lenders, which may limit you to a less competitive product with your current lender (who may not be offering their best rates to existing customers).
- Exposure to changes, as you secure the deal when you apply, you risk increases whilst you wait.
- Missing savings, as the extra monthly payments on the SVR can quickly offset any future gains from a small rate drop.
Unless we were anticipating a dramatic, sudden rate cut—which is historically rare—waiting simply doesn’t tend to pay off.
Once You Apply, the Flexibility is Yours
Another often overlooked advantage of applying early is that you usually lock in protection against rate increases once your application has been submitted.
Better still, most lenders allow us to switch you onto a lower rate, if they release one, right up to a couple of weeks before completion. This provides the best of both worlds—you’re shielded from potential increases but can still take advantage of reductions if and when they occur.
That’s why our standard process is to continue checking for better deals after your offer is issued, and we’ll let you know if a better rate becomes available with your lender during your transaction.
Final Thoughts: Waiting May Cost More Than It Saves
While no one can predict the market perfectly, experience has shown that trying to “time” the mortgage market is often a losing game. Yes, lenders come in and out of competitiveness, and from time to time the perfect deal may appear—briefly. But trying to wait for that perfect moment often results in missed opportunities, limited options, or higher costs.
In most cases, the wisest move is to apply sooner rather than later—secure your position, keep your options open, and retain the flexibility to pivot if something better comes along.
And as always, I’ll be here to monitor things on your behalf throughout the process—but do make sure to check in with me again around two weeks before you’re due to complete, so we can perform a final check and make sure you’re still on the most competitive deal available.
Probably the biggest mortgage-related question on everyone’s lips is whether to fix their mortgage and at present, it is certainly difficult to predict future interest rates.
I can remember a conversation with a client almost 18 months ago where media coverage suggested interest rates were going to shoot up, and they were worried the tracker product I had recommended might become very expensive.
In my opinion, whether to fix your interest rate or not is a two-part question. Firstly consider your attitude to risk and the severity of that risk.
If you have ample income to afford higher rates, it comes down to your preference of whether to gamble on variable-type products. But, if you cannot afford for your mortgage payments to go above current figures, you should not only be considering a fixed rate but also trying to reduce your borrowing levels asap.
The second part of the answer comes down to the difference between fixed rates and variable products. If the difference between a suitable variable product and fixed deals is relatively low, even if you are a risk taker, it may be worth opting for a fixed rate. However, with bigger differences, it becomes harder to say.
Let us compare a 5-year deal currently on offer with one lender of 6.49% with a 25% deposit to their 2-year fixed and 18month tracker product; this is 3-4% higher, and that means the chances of it being good value for money long term are much lower as it would require average interest rates over the next five years to be over 5% or so.
That is a significant increase from current rates, so I would only recommend a fixed in this scenario to someone on the borderline of what they could afford and needing absolute long-term security.
Many lenders are touting products with an option to switch to a fixed deal at a later date; without early repayment charges. But for those who would be at serious risk of being unable to afford their mortgage if rates went up, this is likely to be a poor option, as the fixed deals available at the time are likely to be higher then as well.
It remains likely that while interest rates must increase at some point, overall market competition will do too, and to some extent, increases in bank base rates are likely to be met with at least some reduction in lenders’ margins.
Current two-year fixed deals come with an average margin of about 3% over the bank base rate, which would have been unthinkable three years ago, so at some point, slowly but surely, these differences must be eroded by competition as the market improves.
I wrote recently about the tough decision some people have about whether to fix their mortgage now; or wait on their standard variable rate, exposed to potential rises.
With today’s announcement that the Bank of England Base Rate will stay at 0.5%, the decision hasn’t got easier.
There is, however, a nifty product currently being offered by the Nationwide Building Society (one of the few lenders still vying for new business).
It allows you to take one of their current tracker products now and switch it to a fixed rate whenever you choose; without incurring early repayment charges.
Other providers have similar offerings; however, a key difference sets them apart.
The Nationwide will allow you to switch to a fixed rate based on the Loan-to-Value of the valuation taken when you arranged your tracker, which means that if house values continue to fall, you can still access new deals.
You will have to pay a second arrangement fee, however. And you will be restricted to the fixed rates available when you decide to change, which could be higher than those available now.
But if you are not sure which way to turn, this at least offers a get-out clause which typical tracker products will not.
People have been asking me recently whether it is the right time to fix their mortgage deal now that rates are increasing.
It is an interesting question without a very straightforward answer, but here are some things to consider.
If you are on a standard variable rate or will be soon; is it below the current fixed rates?
Many banks haven’t passed on the full rate cut and there are SVR’s out there far higher than current fixed deals; if you have a decent amount of equity in your property.
Currently, fixed rates are available around the 3% mark if you have 25-30% equity. If your current rate is above 3% then it’s well worth considering switching to a fixed deal.
If you don’t have a lot of equity or if you have any significant adverse credit, the picture changes considerably; it may be better to wait until rates are about to jump significantly.
It largely depends on how much more a month you will have to pay to fix it now.
But for those with a low standard variable, the big question is when will the Bank of England Base Rate go up, and by how much?
And while Mervin King announced that it definitely wouldn’t go up this year, it’s worth looking at inflation.
You may have noticed petrol prices rising again, and crude oil has bounced back to $70 a barrel.
This could have a sizeable effect on the Retail Prices & Consumer Prices Index, and importantly on swap rates; if you look at other commodities which filter down to consumer prices such as steel and aluminium many are enjoying a boost at the moment too.
Swap rates drive fixed deals, and many lenders have just increased their fixed rates due to changes in swap rates.
Without a crystal ball, it’s hard to know whether swap rates will continue to rise or if they may even fall again; before the bank base rate changes.
The swap rate increases are likely due to inflation concerns and the anticipated rise in base rate; so they may continue to rise moving forward.
Historically speaking a 3-4% interest rate on a mortgage is still low, so this all points to now being a good time to fix for 2-3 years as long as your circumstances suit.
