Should I Fix My Mortgage?

At Towerstone, we provide specialist property accountancy services for homeowners, landlords, and property investors. This article explains what you need to know to make informed decisions around this topic.

This is one of the most important financial decisions homeowners make and one that can feel especially stressful when interest rates are changing or the news is full of economic uncertainty. Fixing your mortgage can bring peace of mind and stability but it is not always the best option for everyone. The right choice depends on your circumstances your risk tolerance and your plans over the next few years.

In this guide I will explain what fixing a mortgage actually means how it compares to variable options when fixing usually makes sense when it does not and how to decide what is right for you. This is written in clear UK English and based on how mortgages work in practice rather than headline opinions.

What It Means to Fix Your Mortgage

A fixed rate mortgage means your interest rate stays the same for a set period of time. This period is commonly two five or sometimes ten years.

During the fixed period:

Your monthly repayments stay the same

Your interest rate does not change even if base rates rise

You are protected from sudden payment increases

At the end of the fixed term you move onto your lender’s standard variable rate unless you remortgage or choose a new deal.

Fixing does not mean your mortgage is fixed forever. It simply locks in the rate for an agreed time.

Why People Choose Fixed Rate Mortgages

The main reason people fix their mortgage is certainty.

Knowing exactly what your monthly payment will be makes budgeting easier and reduces financial anxiety. This is particularly important for households where money is tight or where a payment increase would cause real stress.

Fixing is also attractive when interest rates are expected to rise. Locking in a rate can protect you from higher costs in the future.

Many first time buyers fix because they want stability while adjusting to the costs of home ownership.

How Fixed Rates Compare to Variable Rates

Variable rate mortgages change in line with the lender’s rate or the base rate set by the Bank of England.

This means:

Payments can go up

Payments can go down

You benefit when rates fall

You carry the risk when rates rise

Fixed rates remove this uncertainty but usually come at a slightly higher starting rate than the lowest variable deals available at the time.

In simple terms, fixing is about paying a small premium for insurance against future rate rises.

When Fixing Your Mortgage Often Makes Sense

Fixing is often sensible if your budget would struggle with higher payments. If even a modest increase would put pressure on your finances then stability is valuable.

It also makes sense if you expect interest rates to rise over the next few years. While no one can predict rates with certainty fixing protects you from that risk.

Fixing is usually a good option if you want predictable outgoings for family or lifestyle reasons. For example if you are planning children reducing work hours or taking on other long term financial commitments.

It can also be sensible if you do not plan to move or overpay significantly during the fixed period.

When Fixing May Not Be the Best Choice

Fixing is not always the right answer.

If you plan to move house in the near future a fixed rate can be restrictive. Most fixed mortgages come with early repayment charges which can be expensive if you exit the deal early.

If you expect interest rates to fall fixing at a higher rate could mean paying more than necessary.

Fixing may also be less suitable if your income is likely to increase significantly and you want flexibility to overpay or remortgage without penalties.

Some borrowers with strong financial buffers are comfortable with variability and prefer to take the risk in exchange for potentially lower costs.

The Importance of Early Repayment Charges

One of the biggest downsides of fixed rate mortgages is early repayment charges.

These charges apply if you repay or change your mortgage during the fixed period beyond allowed limits.

They can be:

Several thousand pounds

A percentage of the outstanding balance

Higher in the early years of the fix

If there is a realistic chance you will sell remortgage or significantly change your mortgage during the fixed term this must be factored into the decision.

How Long Should You Fix For

Choosing the length of the fix is as important as deciding whether to fix at all.

Two Year Fixes

Two year fixes are popular because they offer short term certainty with relatively limited commitment.

They can be suitable if:

You want flexibility

You expect your situation to change

You are unsure where rates are heading

However they expose you to remortgage risk sooner.

Five Year Fixes

Five year fixes offer longer stability and are often chosen by families or people who value predictability.

They can be suitable if:

You want long term budgeting certainty

You believe rates may rise

You do not plan to move

Five year fixes often strike a balance between security and commitment.

Longer Fixes

Ten year fixes and longer exist but are less common.

They may suit people who:

Want maximum stability

Are close to retirement

Have a very long term view

However they usually come with higher rates and more restrictive early repayment charges.

Fixing and Loan to Value

The rate you are offered depends heavily on your loan to value.

Lower loan to value usually means better fixed rates.

If you are close to a loan to value threshold it may be worth waiting or overpaying to reach a better bracket before fixing.

This is where personalised advice matters more than general rules.

Fixing as a First Time Buyer

First time buyers often choose fixed rates for reassurance.

This is usually sensible because home ownership brings many new costs and surprises. Fixing removes one major unknown.

However first time buyers should still consider flexibility. Life can change quickly in the early years and being locked into a long fix can be limiting.

Fixing as a Home Mover

Home movers need to think carefully about fixing.

If you expect to move again within a few years you should check whether the mortgage is portable. Porting allows you to take the fixed rate with you to a new property subject to lender approval.

If porting is not guaranteed early repayment charges become a real risk.

Fixing and Overpayments

Most fixed rate mortgages allow limited overpayments each year without penalty.

If you plan to overpay significantly check:

How much is allowed penalty free

Whether overpayments reduce the balance or the term

If you want maximum overpayment flexibility a variable or tracker mortgage may suit better.

Emotional Versus Financial Decision Making

This decision is not purely mathematical.

Some people value peace of mind above all else. Others are comfortable with risk and variability.

Neither approach is wrong. The best mortgage is the one that lets you sleep at night while still fitting your financial plans.

Trying to time the market perfectly often leads to regret. A good decision made for the right reasons usually feels right even if rates move unexpectedly.

Common Myths About Fixing

There are several common misconceptions.

Some believe fixing is always safer which ignores flexibility risks.

Others think variable rates are always cheaper which ignores future uncertainty.

Some assume fixing means you can never move which is not always true if porting is available.

Understanding the detail matters more than the label.

The Role of a Mortgage Adviser

A whole of market mortgage adviser can help you assess:

Your affordability under different scenarios

The true cost of fixing versus variable options

Early repayment risks

Portability features

This decision should be based on your situation not headlines.

My Professional View

In my professional experience fixing your mortgage is often the right choice for people who value certainty and have limited tolerance for rising costs.

However fixing is not automatically better. The length of the fix the flexibility of the deal and your future plans matter just as much as the rate itself.

The biggest mistakes happen when people fix without thinking about early repayment charges or choose a term that does not match their life plans.

Final Thoughts

So should you fix your mortgage?

You should consider fixing if you want predictable payments expect rates to rise or would struggle with higher costs. You should think carefully before fixing if you plan to move soon expect falling rates or want maximum flexibility.

There is no one size fits all answer. The right decision is the one that fits your finances your plans and your comfort with risk.

A well chosen fixed rate mortgage can provide stability and confidence. A poorly chosen one can feel restrictive and expensive. Taking time to understand the trade offs is what makes the difference.

You may also find what is a lifetime mortgage and what is an interest only mortgage useful. For wider guidance, explore our mortgage guidance hub.