Porting your mortgage

Find out how porting a mortgage works and learn what to expect from the process. 

What does porting a mortgage mean?

Porting a mortgage means transferring your existing mortgage deal to a new property when you move home. You'll pay off your current mortgage and take out a new one with the same lender on the new property, keeping your interest rate.

This can help you avoid early repayment charges or keep a lower rate. But you’ll still need to do affordability checks and meet your lender's criteria.

Your mortgage porting options

The mortgage porting process could vary depending on how much of your current mortgage deal you want to port:

Porting and borrowing more

If your current mortgage doesn’t cover the cost of your new home, you might want to apply for additional borrowing, sometimes known as ‘topping up’ your mortgage. This extra borrowing will have its own interest rate.

Porting and borrowing less

Looking to port your mortgage to a cheaper property? You might be able to port your current deal on the smaller amount and pay off the difference. You may also have to pay an early repayment charge.

Porting and not borrowing more

This might work if the amount you need to borrow on your new home is the same as your existing mortgage balance. Your deal won’t change as the balance stays the same.

Porting option examples

  • Example

    • You’re selling your home for £250,000.
    • Your current mortgage balance is £175,000. This means you have £75,000 equity in your home.
    • The property you want to buy costs £375,000.
    • You can put down the £75,000 equity from your property sale, and port the existing £175,000 mortgage.
    • You’ll then have to borrow an extra £125,000 on a new deal.
  • Example

    • You’re selling your home for £250,000.
    • Your current mortgage balance is £175,000. This means you have £75,000 equity in your home.
    • The property you want to buy costs £200,000.
    • You can put down the £75,000 equity from your property sale, and port £125,000 of your existing mortgage.
    • You’ll then have to pay back £50,000 from your existing mortgage – plus any early repayment charges.
  • Example

    • You’re selling your home for £250,000.
    • Your current mortgage balance is £175,000. This means you have £75,000 equity in your home.
    • The property you want to buy costs £225,000 but you want to keep £25,000 for home improvements.
    • You can put down £50,000 equity from your property sale, keeping the £25,000 for home improvements, and port your existing £175,000 mortgage.

Things to consider when porting a mortgage​

Pros

  • You could keep the same interest rate as your current deal.
  • Your monthly payments could stay the same if you’re aren’t borrowing more, so it might not affect your budget.
  • You might avoid early repayment charges if you port the full mortgage amount.

Cons

  • Your current interest rate might no longer be the best deal.
  • You might have to pay extra fees,​ such as early repayment charges.
  • The new loan may not meet the criteria of some lenders.

How to port a mortgage​

The process for porting is similar to applying for a new mortgage or switching deals. You’ll still need to complete a mortgage application form.

1. Check your current mortgage offer

First, you’ll need to dig out your original offer letter to check if your mortgage is portable.

2. Reassess your circumstances

Your lender will have their own qualifying criteria for your new deal. 

3. Apply for new borrowing

Fill out the application form with details of your new home and how much you’re paying for it.

4. Wait for the property valuation

Your lender will check that the house is worth the amount you’re asking to borrow.

5. Your application will be reviewed

Your lender will review your application and let you know if you can move your mortgage deal. 

Looking to port your mortgage?

Mortgage Calculator

Use our mortgage calculator to see what your repayments could look like if you port your rate.

Mortgage Calculator

Porting your rate

Book an appointment with one of our mortgage & protection advisers to chat about porting. Appointments are available by video, in person or over the phone.

Book an appointment

Switch your deal

It’s worth checking whether switching to a new deal is a better option than porting. Early repayment charges may apply.

Switching deals

You could lose your home if you don’t keep up your mortgage repayments

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Learn about the costs associated with moving home.

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Get in touch

You can call us or book a video mortgage appointment from the comfort of your own home. 

Contact us

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Thinking about moving house? Find out more about what you’ll need to do, what you’ll pay for and get a refresher on all things mortgages.

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Moving house

Thinking about moving house? Find out more about what you’ll need to do, what you’ll pay for and get a refresher on all things mortgages.

Moving home help