Should You Use Savings to Reduce Your Mortgage Before Remortgaging?
If you have savings available when your mortgage deal is coming to an end, there can be an obvious temptation.
Pay a lump sum off the mortgage, reduce the balance and hopefully bring the monthly payments down.
Sometimes that can make perfect sense.
However, before committing £20,000, £50,000 or more to the mortgage, there’s another question worth asking:
What will that money actually achieve?
Reducing the balance is only one consideration. Depending on the property value and mortgage required, a lump-sum payment could also move you into a lower Loan to Value (LTV) band and potentially change the mortgage products available.
Equally, you could commit a significant amount of cash without reaching the next LTV band at all.
What Is Loan to Value?
Loan to Value is the mortgage balance expressed as a percentage of the property’s value.
For example, if a property is worth £500,000 and the mortgage is £300,000, the LTV is 60%.
This matters because lenders commonly offer different mortgage products at different LTV levels.
Reducing a mortgage sufficiently to move into a lower LTV band can therefore potentially affect both the products available and the monthly payment.
The important word is sufficiently.
Paying money off the mortgage doesn’t automatically mean you’ll qualify for a different product.
A Recent Example
We recently spoke to a client whose existing mortgage deal was approaching its end.
Like many borrowers who secured their mortgage several years ago, they were facing a potentially significant increase in their monthly payment.
They also had savings available and were considering using somewhere between £30,000 and £60,000 to reduce the mortgage.
At first, paying the larger amount might seem the obvious choice.
A smaller mortgage should mean a smaller payment.
However, we needed to understand something else first.
What would the lender value the property at?
The client had an idea of what their home was worth, but mortgage lenders don’t necessarily use the homeowner’s estimate.
The lender’s valuation would determine the LTV and therefore whether paying a lump sum would actually move the mortgage into a different pricing band.
Why the Property Valuation Matters
Imagine you’re trying to reduce your mortgage to 60% LTV.
You believe your home is worth £650,000, so you calculate the amount you need to repay based on that figure.
The lender subsequently values the property at £600,000.
Your LTV calculation has now changed.
That could mean paying a larger lump sum than anticipated to reach the same LTV band, or deciding that using the additional cash isn’t worthwhile.
This is why we wouldn’t normally look at the lump sum repayment in isolation.
We’d want to understand the likely mortgage balance, lender valuation and available LTV bands before deciding what the additional capital could achieve.
Should You Pay Off as Much as Possible?
Not necessarily.
Reducing your mortgage can lower the amount owed and potentially reduce the interest paid over the remaining term.
However, once savings have been used to repay the mortgage, that money may no longer be readily available.
Before making a substantial lump-sum payment, it can therefore be sensible to consider:
- How much cash you want to retain for emergencies
- Whether you have any planned expenditure
- Whether some of the money is held in investments
- Whether there are tax implications to accessing the money
- How much needs to be repaid to reach the next relevant LTV band
- Whether reaching that band materially changes the mortgage options available
- Whether your existing mortgage has any restrictions or charges for making an overpayment
For some clients, paying off as much as possible may be appropriate.
For others, using a smaller amount to reach a particular LTV while retaining the remaining capital could provide greater flexibility.
Don’t Forget the Mortgage Term
The lump sum isn’t the only way to manage the monthly payment.
The mortgage term can also make a significant difference.
In our client’s case, we looked at whether extending the mortgage term could reduce the contractual monthly payment while retaining the ability to make overpayments later.
That can provide additional monthly flexibility, although there is an important trade-off.
A longer mortgage term can mean paying more interest overall if the mortgage remains outstanding for longer.
Overpayments can potentially help reduce the balance and effective mortgage term, although these are subject to the lender’s terms and any applicable limits or early repayment charges.
Again, it comes back to looking at the whole picture rather than one number.
Start Looking Before Your Current Deal Ends
Another lesson from this case was the importance of timing.
You don’t necessarily need to wait until your existing mortgage deal is about to expire before reviewing the options.
Starting earlier can provide time to understand:
- The likely monthly payment
- Whether a lump-sum repayment would be worthwhile
- The effect of different property valuations
- Alternative mortgage terms
- Available LTV bands
- Whether to stay with the existing lender or consider alternatives
- How future plans, such as moving home, could affect the decision
In this case, reviewing the mortgage early meant we could investigate the options well ahead of the existing deal ending rather than having to make all of those decisions at the last minute.
What If Your Savings Are Invested?
This is particularly relevant for clients working with an accountant or financial adviser.
Using £50,000 from savings or investments to reduce a mortgage isn’t simply a mortgage decision.
There may be tax, investment and wider financial planning considerations as well.
A mortgage adviser can explain what using the money could achieve from a mortgage perspective.
An accountant or financial adviser can consider the implications of where that money is coming from and whether using it is appropriate within the client’s wider financial plans.
Those conversations can work particularly well together.
Final Thoughts
When a mortgage deal is ending, the question isn’t necessarily:
“How much can I afford to pay off?”
A better starting point may be:
“What would paying this money off actually achieve?”
A lump-sum repayment could reduce the mortgage balance, lower the monthly payment and potentially move you into a different LTV band.
It could also tie up money you would prefer to keep available without materially changing the mortgage product available.
Understanding the numbers before moving the money can help you make a more informed decision.
Information correct at time of writing – October 2026
Regulatory Disclosure
Your home may be repossessed if you do not keep up repayments on your mortgage or any other debts secured on it.
There may be a fee for mortgage advice. The precise amount will depend upon your circumstances.
Symmonds de Lacey is a trading style of Easy Street Financial Services Limited, which is authorised and regulated by the Financial Conduct Authority.
Please note, we are not tax advisers. For tax advice, please speak to your accountant or a suitably qualified tax adviser.
