Your mortgage term affects how long you have to repay your mortgage. It can also affect your monthly repayments, total interest and how quickly you become mortgage-free.
If your payments feel too high, you may be wondering whether extending your mortgage term could make things more manageable. If your budget has improved, you may be thinking about shortening the term to repay your mortgage sooner.
Changing your mortgage term may be possible, but it depends on your lender, affordability, age, mortgage type, current deal and future plans.
Muttuo Mortgages can help you understand how changing your term could affect your payments, total interest and lender options before you make a decision.
Key takeaways before changing your mortgage term
- Your term affects monthly payments
A longer term can reduce monthly payments, while a shorter term usually increases them.
- A longer term can cost more overall
Extending your mortgage term may make payments feel easier, but you may pay more interest over time.
- A shorter term can reduce interest
Shortening your term may help you repay the mortgage faster, but the higher monthly payment needs to be affordable.
- Lender criteria still matter
A lender may review your income, age, affordability, mortgage type and whether the new term fits its rules.
- The right term depends on your plans
Your budget, retirement plans, family costs, job security and future moving plans can all affect what feels suitable.
What does changing your mortgage term mean?
Changing your mortgage term means adjusting the length of time you have left to repay your mortgage.
For example, if you have 20 years left on your mortgage, you may look at extending it to 25 years to reduce the monthly payment. Or, if your income has increased, you may consider shortening it to 15 years so you can repay the mortgage sooner.
The mortgage balance is not cleared or reduced just because the term changes. Instead, the same debt is spread over a different period of time.
That is why the term matters. It can change your monthly payment, how quickly you repay the mortgage and the total amount of interest you pay over time.
Extending your mortgage term
Extending your mortgage term means spreading the mortgage over a longer period.
This can reduce your monthly repayments because the balance is repaid more slowly. For some homeowners, that can make the mortgage feel more manageable if costs have increased, income has changed, or household commitments have grown.
However, extending the term can also mean paying interest for longer. Even if the monthly payment falls, the total cost over the full mortgage term may increase.
When it may help
Extending your term may help if
Your monthly payments feel stretched
A longer term may reduce the monthly payment and give your budget more breathing room.
Your circumstances have changed
A change in income, childcare costs, household bills or other commitments may make a longer term worth reviewing.
You want short-term flexibility
Extending the term may help reduce pressure while you review your wider finances.
When it may not suit you
Extending your term may not help if
It increases the total cost too much
Lower monthly payments can still mean paying more interest overall.
It could run into retirement
Some lenders may be cautious if the mortgage term runs close to or beyond retirement age.
It could delay becoming mortgage-free
A longer term usually means it takes longer to fully repay the mortgage.
Shortening your mortgage term
Shortening your mortgage term means repaying the mortgage over a shorter period.
This usually increases the monthly payment because the balance needs to be repaid faster. However, it can reduce the total interest you pay and may help you become mortgage-free sooner.
Shortening the term can be useful if your income has increased, your spending has reduced or you want to reduce long-term mortgage costs.
When it may help
Shortening your term may help if
You want to repay sooner
A shorter term can help you clear the mortgage faster.
You want to reduce total interest
Because the mortgage is repaid over fewer years, you may pay less interest overall.
Your budget can support higher payments
If your income and spending allow, a shorter term may help you make faster progress.
When it may not suit you
Shortening your term may not help if
The higher payment feels uncomfortable
A higher monthly payment can leave less room for savings, bills or unexpected costs.
Your income may change
If your income changes from month to month, a higher payment may create pressure.
You may need flexibility later
If you expect family costs, career changes or moving plans, locking into higher payments may not suit your situation.
How your mortgage term affects payments and interest
The mortgage term affects the balance between short-term affordability and long-term cost.
A longer term usually lowers the monthly payment, but the mortgage is repaid more slowly. A shorter term usually increases the monthly payment, but the mortgage is repaid faster and may reduce the total interest paid.
How different terms change a £200,000 mortgage
30-year term
£1,074
Approximate monthly payment
£186,500 total interest
Approximate interest over the term
What this means
This gives the lowest monthly payment, but interest is paid for longer.
25-year term
£1,169
Approximate monthly payment
£150,800 total interest
Approximate interest over the term
What this means
A middle option, with a higher monthly payment than a 30-year loan but less total interest.
20-year term
£1,320
Approximate monthly payment
£116,800 total interest
Approximate interest over the term
What this means
The highest monthly payment, but the mortgage is repaid sooner, and the total interest is lower.
Illustrative example only. Figures are approximate and assume the same 5% interest rate applies for the full term. Actual payments and costs depend on your mortgage balance, interest rate, term, fees, lender criteria and circumstances.
Key trade-off: A longer term may reduce the monthly payment, but it can increase the interest paid over time. A shorter term may reduce total interest, but the higher payment needs to fit your budget.
The right term is the one that fits your monthly budget while still supporting your long-term plans.
Want to compare your term options?
Changing your term can affect both your monthly payments and the total interest you pay. Muttuo Mortgages can help you compare shorter, longer and unchanged term options before you decide.
What lenders may check before changing your term
Changing your mortgage term is not only a personal budget decision. A lender may also need to check whether the new term fits its criteria.
Affordability
If the change increases your monthly payment, a lender may check whether the higher payment is affordable.
This is especially relevant when shortening the term, because the same mortgage balance is being repaid over fewer years.
Age and retirement plans
Some lenders have maximum age limits or rules around lending into retirement.
If the new term runs close to or beyond your expected retirement age, a lender may ask how the mortgage will remain affordable later in life.
Mortgage type
The effect of changing the term can depend on whether your mortgage is repayment, interest-only or part-and-part.
On a repayment mortgage, changing the term usually affects how quickly the capital is repaid. On an interest-only mortgage, the monthly interest payment may not change in the same way, but your repayment plan still matters.
Current deal
If you are in a fixed, tracker or discounted deal, you may need to check whether changing the term affects your current product.
The rules can vary. If you are remortgaging at the same time, you may have more opportunity to review the term as part of the new deal.
Changing your term when remortgaging
A remortgage can be a natural time to review your mortgage term.
When your current deal is ending, you may be able to review your rate, lender options and remaining mortgage term at the same time. This can help you see how different choices could affect your monthly payments and long-term cost.
For example, you may choose to:
- keep the same remaining term
- extend the term to reduce monthly payments
- shorten the term to repay faster
- review the term while switching to a new deal
However, the lowest monthly payment is not always the best overall option. Extending the term may help your monthly budget, but it can increase the total interest you pay. Shortening the term may reduce interest, but only if the higher payment is affordable.
Review your term before your deal ends
If your current mortgage deal is coming to an end, it can be a useful time to review your rate, term and lender options together.
Other ways to change how your mortgage feels
Changing your mortgage term is not the only way to adjust your monthly payments or long-term cost. It may also be worth reviewing your rate, overpayment options, current lender deals and wider budget.
Review your mortgage rate
If your current deal is ending, switching to a new rate may affect your monthly repayments. The rate, term and mortgage balance all work together, so it is worth reviewing the full picture.
Make overpayments
If your lender allows overpayments, paying extra can help reduce your balance faster without formally shortening the term. However, overpayment limits and early repayment charges can apply.
Consider product transfer options
Your current lender may offer a new deal without a full remortgage. This is known as a product transfer, but it is still worth comparing whether another lender could offer a better fit.
Review your wider budget
If your mortgage payment feels difficult, review your other commitments before changing the term. Debts, childcare, household bills and regular spending can all affect how comfortable the mortgage feels each month.
Before you change your mortgage term
Before making a decision, check how the change could affect five things:
01 Your monthly payment
Compare what your payment could look like on a shorter, longer or unchanged term.
02 Your total interest
Check whether the new term could increase or reduce the total amount of interest paid.
03 Your future plans
Think about retirement, moving home, family costs, career changes and how long you want the mortgage to run.
04 Lender criteria
Check whether the new term fits the lender’s rules around affordability, age and mortgage type.
05 Your flexibility
Consider whether overpayments, remortgaging or a future term change could give you room to adjust later.
Need help changing your mortgage term?
Changing your mortgage term can affect your monthly payments, total interest and long-term plans.
Muttuo Mortgages can help you compare your options across over 100 lenders and understand whether extending, shortening or keeping your current term may be suitable.
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Frequently asked questions about changing your mortgage term
Can I extend my mortgage term?
You may be able to extend your mortgage term, but it depends on your lender, age, affordability and mortgage type.
Extending your mortgage term can reduce monthly repayments because the balance is spread over a longer period. However, it may also increase the total interest you pay over time.
Your lender may also consider whether the new term runs into retirement or beyond its maximum lending age.
Can I shorten my mortgage term?
You may be able to shorten your mortgage term if the higher monthly payment is affordable.
Shortening the term usually increases your monthly repayments because you are repaying the mortgage faster.
However, it may help reduce the total interest paid and can help you become mortgage-free sooner.
Does extending my mortgage term save money?
It may reduce your monthly payments, but it does not usually save money overall.
A longer mortgage term usually means paying the debt back more slowly. This can reduce the monthly payment, but it can also mean paying interest for longer.
The monthly saving needs to be weighed against the total cost over the full term.
Is it better to overpay or shorten the term?
It depends on how much flexibility you want and whether your lender allows overpayments.
Shortening the term usually commits you to a higher monthly payment. Overpaying can help reduce the balance faster while keeping the original term in place.
However, overpayment limits, early repayment charges and lender rules can apply, so it is worth checking before making a decision.
Can I change my mortgage term when remortgaging?
Yes, remortgaging can be a good time to review your mortgage term.
When you remortgage, you may be able to choose a new term alongside a new rate or lender.
This can help you balance monthly affordability with long-term cost, but the new term still needs to fit lender criteria and your future plans.
Will changing my mortgage term affect my credit score?
Changing your term does not automatically mean your credit score will change, but the process can depend on how the change is arranged.
If you make a formal application, the lender may carry out checks. If the change is part of a remortgage, a credit search may be involved.
Your adviser or lender can explain what checks may apply before you proceed.


