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When the Bank of England change their base rate, this can affect your mortgage if you have a variable interest rate. Find out what changes to the base rate mean for your mortgage.
On 18 December 2025 the Bank of England base rate went down by 0.25% from 4.00% to 3.75%.
Use our interest rate change calculator to help you see how the cost of your mortgage repayments could go up or down.
You can find your mortgage balance in your most recent annual mortgage statement.
You'll need to take into account any payments made on your mortgage since the date of the statement. If you've fallen behind with your payments on any part of your mortgage that is a repayment mortgage, you'll need to take off the amount of arrears from the current balance.
Important: If you have a mortgage made up of part repayment and part interest only, you'll need to do a separate calculation for each.
The length of time you have left to pay back your mortgage.
You can find your remaining term details in your most recent annual mortgage statement.
Important: Please check the remaining term on your main account and each sub account.
This is the interest rate for your sub account on the date shown.
You can find your interest rate details in your most recent annual mortgage statement.
Important: Please check the interest rate on your main account and each sub account.
Use the + or - buttons to add and deduct amounts of 0.25%. Or just type in the rate change percentage you'd like to see illustrated.
Has a Bank of England base rate change affected your mortgage rate and monthly repayments? There are a few things you can do.
You may find that your monthly payment has reduced if you have made overpayments to your mortgage. Your monthly payment will be worked out based on any overpayments you might have made. This could mean your monthly payment has come down, despite a rise in the interest rate.
If you’ve made plans to take out extra borrowing, a rate change won’t affect any amount that is on a fixed rate. This is because the rate change will only impact variable rates.
For extra borrowing at a variable rate, any offer will show the interest rates that applied at the time the offer was made. If we change the variable rate after we issue the offer, we won’t write to you until you complete. When you complete, the letter will show a new monthly payment and interest rates that will apply.
If you’ve made plans to switch to a new fixed rate product, this won’t change in line with our variable mortgage rate changes. But, a rate change could affect a part of your existing mortgage if it has a variable rate.
If so, we’ll work out the monthly payment on any parts of the mortgage charged at a variable interest rate. We’ll then add them to the parts with fixed interest monthly payments to give you a new total monthly payment.
As tracker rates are linked to the Bank of England base rate, your mortgage rate will change in line with the base rate. We’ll get in touch to tell you of the changes to your monthly payment amount.
If you change your mind after submitting your application, you'll need to call us straightaway.
|
Fixed interest rate |
Variable interest rate - Lender variable rate |
Variable tracker rate - Tracker rate |
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|---|---|---|---|
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Fixed interest rate What are the different types of rates? |
Variable interest rate -Lender variable rate Your interest rate stays the same for a set amount of time. At the end of the fixed rate period, we’ll change you to another rate. This is usually 1 of our variable rates. |
Variable tracker rate -Tracker rate We set our lender variable rate and we can change it, but it will only go up if there’s a:
|
Your interest rate is linked to the Bank of England base rate and changes if the base rate does. Your interest rate will be made up of the base rate plus or minus a %. |
|
Fixed interest rate Can my interest rate change? |
Variable interest rate -Lender variable rate No, not during the fixed rate period. |
Variable tracker rate -Tracker rate Yes, your interest rate will go up or down if we change our lender variable rate. |
Yes, your interest rate will change if the base rate goes up or down. |
|
Fixed interest rate Can my monthly payments change? |
Variable interest rate -Lender variable rate We may update your monthly payment amount each year to make sure your payment is on track. For example, if you’ve made an overpayment. |
Variable tracker rate -Tracker rate Yes, your monthly payment can change if rates go up or down. If they go up, you could end up paying more than you budgeted for. |
Yes, your monthly payment can change if rates go up or down. If they go up, you could end up paying more than you budgeted for. |
|
Fixed interest rate Will I be charged if I overpay or pay my mortgage off early? |
Variable interest rate -Lender variable rate You may be charged if you repay all or part of your mortgage before the fixed rate period ends. We call this an early repayment charge. |
Variable tracker rate -Tracker rate You won’t usually be charged if you repay all or part of your mortgage. |
You may be charged if you repay all or part of your mortgage in a certain amount of time after you take out a new tracker. We call this an early repayment charge. |
You can find your mortgage details in your most recent annual mortgage statement or from online banking. If you're not registering for online banking yet, it's easy and only takes about 5 minutes to register.
If your mortgage has more than 1 sub-account and some are on variable rates, you’ll need a separate calculation for each. Add each sub account calculation together to work out the total change to your monthly payment.
You can find out if you have sub accounts on your most recent yearly mortgage statement.
If there’s a rate change and it affects your mortgage, we’ll write to you confirming your new monthly mortgage payment before we take it.
Your credit score affects the cards and interest rates you qualify for. Learn more about how credit works.