UK Mortgage Rates Set to Increase in September 2026

Are UK mortgage rates going up and how can families save money?

UK mortgage rates are already edging higher after a sharp rise in global bond yields and swap rates, and this is likely to feed through into more expensive fixed-rate deals over the coming weeks. For parents, this means higher monthly payments when remortgaging or buying a home, tighter affordability checks, and less spare cash for everyday family costs, although there is still time in many cases to lock in a rate, compare options and use a good broker to limit the damage to the household budget.

Why are mortgage rates rising again?

Rates are climbing because a spike in oil prices has pushed up inflation worries, which has triggered a global bond sell-off. That has driven up gilt yields and swap rates, the benchmark lenders use to price fixed-rate mortgages, so banks are now passing those higher funding costs on to borrowers.

How much more might parents have to pay on their mortgage?

Even a relatively small increase of around 0.28 percentage points can add roughly £16 per month for every £100,000 borrowed over 25 years. For a typical family mortgage of £300,000, that is close to £50 extra every month, money that could otherwise go towards childcare, school costs or savings.

Will existing fixed-rate mortgages go up too?

If a family is on a fixed-rate deal that is not due to end for at least six to twelve months, monthly payments should stay the same for now. The pressure comes when that fix ends, or if they are on a tracker deal linked to the Bank of England base rate and that rate rises in the future.

What can parents do to protect their family budget?

Parents can often reserve a new mortgage rate several months in advance, either with their current lender through a product transfer or by switching with the help of an independent broker. Comparing the whole market, trimming other costs, overpaying slightly where possible and choosing the right fixed term can all soften the impact on family finances.

Key PointsMortgage rates set to rise in September 2026: what UK parents need to know now.

• Global bond market turmoil has pushed UK swap rates to multi year highs, putting upward pressure on fixed mortgage rates.
• Average two and five-year fixed rates are now around the mid-5% range, reversing much of the gentle fall seen earlier in the year.
• Major lenders have already started increasing rates across residential and buy-to-let deals, with more rises expected.
• A rise of about 0.28 percentage points costs roughly £16 per month per £100,000 borrowed over 25 years, so families with larger mortgages feel the impact most.
• Existing fixed-rate borrowers are shielded until their current deal ends, but those close to the end of a fix or looking to buy soon need to act quickly.
• Parents can usually lock in a new deal four to six months early, often without commitment, so there is a window to protect against further rises.
• Independent mortgage brokers and reputable online brokers can compare deals from many lenders and help families move fast.
• Alongside the mortgage strategy, trimming everyday spending, building an emergency buffer and checking insurance can all help keep family finances steady.

Get Started

Why UK mortgage rates are rising again

Parents who were starting to relax about mortgage costs are now facing fresh uncertainty. After months where fixed rates slowly drifted down, the trend has reversed. The trigger is not a sudden change in the Bank of England base rate, but what is happening in the global bond markets.

Fixed-rate mortgages in the UK are mainly priced using swap rates rather than the base rate itself. Swap rates are the interest rates that banks charge when lending to each other, and they closely track movements in government bond yields. When the cost of raising money on wholesale markets rises, lenders’ margins are squeezed. That extra cost usually ends up built into new mortgage deals.

Recently, a rise in oil prices has rattled investors, who worry that higher energy costs could keep inflation stubbornly high. When investors expect higher inflation, they often sell government bonds, which pushes bond prices down and their yields up. In the UK, yields on 10 year gilts have climbed above 5.2%, reaching levels not seen since before the financial crisis in 2008. At the same time, the five-year swap rate has jumped above 4.52%, its highest since late 2023.

For families, none of this market jargon feels helpful when there are school shoes to buy and packed lunches to prepare. Yet understanding the link helps explain why mortgage offers are changing so quickly and why deals that looked attractive a fortnight ago may no longer be on the table.

While the Bank of England is not expected to raise the base rate at its next meeting, its chief economist has warned that policymakers cannot simply sit back and wait for all uncertainties to clear before acting. That tone keeps markets on edge and reinforces the idea that borrowing costs could stay higher for longer than many households had hoped.

What is happening in the mortgage market right now?

The immediate sign that something is shifting is lender behaviour. Coventry Building Society has already increased rates across its full range of fixed residential and buy-to-let mortgages. This is often how a new phase starts: one mainstream lender moves first, others pause briefly to assess demand, then several more follow in quick succession.

From a parent’s perspective, this creates a narrow window. When markets expect funding costs to stay elevated or climb further, banks are keen to move early. If a lender leaves its rates too low compared with rivals, it can be inundated with applications in a matter of days. Processing that volume is stressful for staff and expensive for the bank, so they tend to adjust prices quickly to stem the flow.

This is why families may find that a broker recommends moving fast once a suitable deal is found. It is not about scare tactics; deals are genuinely being repriced, sometimes with only a day or two’s notice.

There is also a psychological effect. Parents who were holding off in the hope of cheaper mortgages in a few months may now feel backed into a corner, with worries about being stuck on their lender’s costly standard variable rate if they miss the boat. That anxiety is understandable, especially when childcare, energy bills and food shopping are already stretching the budget.

How far have mortgage rates already risen?

The numbers show that this is more than just a minor blip. After a spell of gentle reductions through spring and early summer, average fixed rates have turned upwards again. Recent Moneyfacts data suggests that the average two-year fixed mortgage is around 5.59%, with a typical five-year fixed at about 5.63%. Other trackers of the market show similar figures, with the mid 5 per cent range becoming the new norm rather than the exception.

Looking at specific competitive deals for lower-risk borrowers with a 60% loan-to-value (LTV), there has been a clear jump in a matter of weeks. In mid-July, some of the most attractive two and five-year fixed rates were just above 4.2 per cent. By early September, similar LTV borrowers were facing best buys closer to 4.5% to 4.6%. It may not sound dramatic at first glance, but those few tenths of a per cent make a real dent in a family budget.

The average figures also hide the fact that families with smaller deposits or more complex circumstances usually pay more than the headline rates. Parents who have taken career breaks, switched to part-time work for childcare reasons, or rely on variable income like overtime or bonuses may find it harder to access the very cheapest deals. For them, even a modest rise in advertised rates can translate into a bigger difference in the deals actually offered.

What rising mortgage rates mean for family finances

To understand the impact on a family’s monthly budget, it helps to break the numbers down. A rise of 0.28 percentage points, from 4.24 per cent to 4.52 per cent, on a repayment mortgage over 25 years adds roughly £16 per month for every £100,000 borrowed. So:

• £150,000 mortgage: around £24 more per month
• £250,000 mortgage: around £40 more per month
• £300,000 mortgage: around £48 more per month
• £400,000 mortgage: around £64 more per month

For parents, that extra money every month has to come from somewhere. It might be the difference between keeping the children’s club memberships going, topping up an ISA, or affording day trips in the holidays. When budgets are already tight, small increases can tip things from manageable to stressful quickly.

The strain is not evenly spread. Families who stretched themselves to buy during the period of ultra-low rates now face a much steeper jump when they remortgage. A household coming off a fix that started around 1.5 per cent and moving to something in the mid 5 per cent range could see monthly payments rise by hundreds of pounds. That does not just hit disposable income; it can also affect mental health and relationship stress at home.

On the other hand, parents who fixed more recently at around 4 to 5 per cent may not see such a large relative jump, although any increase still bites. Renters hoping to become first-time buyers are also squeezed, as higher mortgage rates reduce the maximum loan they can be offered, even as many landlords pass their own higher costs on through rent.

Will your current mortgage payments change?

Whether a family feels an immediate impact depends on their mortgage type and when their deal ends.

Fixed-rate borrowers

If there is more than six to twelve months left on a fixed-rate deal, monthly payments should remain unchanged for now. The contract fixes the rate for that period, regardless of what markets do. The key for parents is to look ahead at the expiry date. Once that fix ends, the mortgage will usually move on to the lender’s standard variable rate, which is almost always much higher, unless a new deal has been arranged.

Tracker and variable-rate borrowers

Families on a tracker mortgage directly linked to the Bank of England base rate will not see their payments change unless the base rate moves. However, if inflation worries persist and the Bank feels pressure to keep rates higher or even raise them, tracker borrowers may face more frequent changes in their monthly payments. Those on standard variable rates are at the mercy of their lender’s decisions; banks can choose to increase these rates even if the base rate stays the same.

New buyers and movers

Parents looking to buy their first family home, move for more space or relocate for schools are already feeling the effects. Higher mortgage rates reduce the maximum loan many lenders will offer, because they stress test affordability at higher interest rates. This may mean needing a larger deposit, accepting a smaller property or widening the search area to more affordable locations.

Find the lowest mortgage rates with our friendly mortgage experts

Compare the best mortgages in minutes

Compare Now

We're rated 'EXCELLENT'

on

*Over 1,100 independent customer reviews

Practical steps for parents if mortgage rates are rising

The situation is worrying, but parents are not powerless. There are several actions that can help protect the family budget and reduce long-term costs.

Check your mortgage deal end date and start early.

One of the simplest yet most effective steps is to find out exactly when the current mortgage deal ends. Many parents only realise they are approaching the end of a fix when a letter arrives from the lender, by which point the best options may already have gone.

Most lenders allow borrowers to secure a new rate up to six months before the current deal expires. Some product transfers with the same lender can be arranged about four months ahead. Starting as early as the lender permits gives more time to compare offers, gather documents and get comfortable with the new payment level.

Consider a product transfer with your current mortgage lender.

For busy parents, a product transfer, moving to a new deal with the existing lender, can be a time-saving option. It often does not involve a new affordability assessment, which is helpful if income has become more complicated because of part-time work, maternity or paternity leave, or changes in employment. Fees may be lower, and the process is usually quicker and more straightforward.

However, convenience should not be the only factor. The existing lender might not offer the most competitive rate or the best overall package when fees are included. Using a broker or comparison tool to sense-check the offer can stop families from leaving money on the table.

Shop around the wider mortgage market.

There is no guarantee that a current lender will be the cheapest or most flexible. Many families save thousands over the life of their mortgage by switching provider at the right time. Comparing deals across the market helps parents see whether a product transfer represents good value or whether another lender could offer a better rate, lower fees or more useful features such as overpayment flexibility.

Whole-of-market brokers and reputable comparison sites can show options from a wide range of banks and building societies. Being prepared with up-to-date payslips, bank statements and details of childcare costs makes it easier to move quickly when the right deal appears.

Lock in a mortgage rate as a safety net.

An important point for parents to remember is that reserving a new mortgage rate in advance does not usually trap them if something better appears later. Many offers are valid for several months and allow borrowers to switch to a cheaper deal with the same lender, or even change lender again, before completion. In effect, locking in a rate can act as insurance against further rises while keeping options open if the outlook improves.

This can be particularly reassuring for families where one partner is self-employed or income is seasonal. Knowing the maximum monthly payment ahead of time makes it easier to plan for school fees, childcare contracts and holiday spending.

Speak to an independent mortgage broker.

The mortgage market is moving quickly, and not every parent has the time or appetite to track products, criteria and small print across dozens of lenders. A qualified, independent mortgage broker can do much of this legwork. They can match a family’s circumstances, including income pattern, number of dependants and future plans, with suitable lenders and products and get applications submitted quickly before rates change.

Balancing risk and certainty: choosing between 2 year and 5 year fixes

One of the biggest decisions for parents remortgaging in a rising-rate environment is how long to fix for. There is no one-size-fits-all answer, but thinking through a few key questions can help.

How stable is the family’s situation?

If a family expects to stay in the same home for the foreseeable future, the children are settled in local schools and there are no major life changes on the horizon, a five-year fix can provide welcome stability. Knowing that payments will not change for half a decade makes it easier to budget for childcare, activities and savings goals.

On the other hand, if there is a realistic chance of moving house, relocating for work, or separating, a shorter two or three-year fix may be safer. Exiting a long fixed deal early can incur hefty early repayment charges, which can eat into any gains made from a slightly lower rate.

How much can the budget flex?

Parents with a bit more breathing room in their monthly budget may feel comfortable taking a shorter fix, accepting the risk that rates could be higher at the next renewal in return for the possibility they may fall. Families already close to the edge might prioritise certainty, even if a five-year fix is a fraction more expensive now than a two-year option.

Do overpayments matter?

Many fixed deals allow up to 10 per cent overpayment each year without charges. Parents who plan to clear debt aggressively, receive bonuses or sell a second property might value this flexibility more than squeezing out the last bit of rate competitiveness. In some cases, a slightly higher rate with more generous overpayment terms can reduce overall interest paid if the mortgage is cleared faster.

Other ways parents can protect their finances

While the mortgage is often the single biggest outgoing in a family budget, it is not the only lever parents can pull when rates rise. A combination of small changes can free up enough money each month to cushion higher payments.

Review insurance and subscriptions.

Regularly reviewing home insurance, life cover, streaming services and gym memberships can reveal savings without dramatically changing lifestyle. Parents can often find similar cover for less by shopping around or adjusting excess levels. Cancelling unused subscriptions or switching to family plans can free up another £20 or £30 per month, which makes a difference when mortgage payments increase.

Control everyday spending.

Food, fuel and kids’ activities are all areas where costs have crept up. Planning meals, buying own-brand items where possible, and making better use of loyalty schemes can reduce grocery bills. Choosing a set number of paid clubs per child and making more of free activities, like parks, libraries and community events, can bring monthly spending back in line.

Build a small emergency buffer.

Even a modest emergency fund of one or two months’ essential expenses can be a lifesaver if an appliance breaks or work hours are cut. Parents who can divert a little cash each month into a separate savings pot will be better prepared for surprises, which in turn makes higher mortgage payments feel less daunting.

Consider side income carefully.

Some parents explore side income options, such as freelance work, evening shifts or selling unwanted items. While this can help bridge a gap in the short term, it is worth weighing the extra income against stress and time away from children. Choosing flexible, manageable options and being honest about capacity is essential to avoid burnout.

When to seek help if you are struggling

If rising mortgage costs start to feel unmanageable, it is important not to wait until arrears build up. Speaking to the lender early can open up options such as temporary interest-only payments, term extensions or payment holidays, depending on the circumstances and the lender’s policies. These should not be taken lightly, as they can increase the total interest paid, but they can provide breathing space during a difficult patch.

Parents can also seek free, impartial debt advice from organisations such as StepChange or National Debtline, which can help prioritise bills, negotiate with creditors and explore longer-term solutions. Mortgage problems can feel isolating, but many families are in a similar position, and there is professional support available.

September mortgage rate increase FAQs for families

Summary: staying in control as mortgage rates rise

Mortgage rates are moving higher again as global bond markets react to inflation concerns, and that shift is beginning to show up in the offers parents see from banks and building societies. The increases so far may look small on paper, but they translate into meaningful extra monthly costs for families already feeling the squeeze.

Yet parents still have choices. Checking deal end dates, starting the remortgage process early, weighing up product transfers against wider market options and using a trusted mortgage broker can all help secure a better outcome. Combining this with sensible budgeting tweaks and, where needed, early conversations with lenders means households are more likely to stay in control, even as the wider economic picture remains uncertain.

Rising rates are unwelcome news for any family, but with clear information and timely action, they do not have to derail long-term plans for a safe, stable home and a secure future for the children.

Compare Our Best Mortgage Rates

Speak to our friendly team of qualified mortgage experts and get our lowest mortgage deals from the top UK lenders.