09/09/2026
🏡 Ever wondered what "porting your mortgage" actually means?
If you're planning to move home, you've probably heard the term "mortgage porting" mentioned by lenders, brokers, or estate agents.
But what exactly does it mean, and could it save you money?
Simply put, porting a mortgage means transferring your existing mortgage deal from your current property to a new one when you move home.
Instead of paying off your current mortgage and starting again from scratch, you may be able to take your existing mortgage product, interest rate, and terms with you to your new property.
Many homeowners don't realise this option exists.
📦 Think of it as taking your mortgage deal with you when you move.
💡 Why do people port their mortgage?
One of the biggest reasons is to keep a favourable interest rate.
For example, if you secured a fixed-rate mortgage a few years ago at a lower rate than those currently available, porting could allow you to keep that deal rather than switching to a potentially more expensive mortgage.
This can be particularly attractive if interest rates have increased since you originally took out your mortgage.
💰 Can you borrow more money when porting?
Yes — in many cases you can.
This is one of the most common questions homeowners ask.
If you're moving to a more expensive property, your existing mortgage may not be enough to cover the purchase.
In this situation, many lenders will allow you to:
✅ Port your existing mortgage balance
✅ Apply for additional borrowing to make up the difference
For example:
Current mortgage balance: £180,000
New property requires borrowing of: £280,000
You may be able to port the £180,000 existing mortgage and apply for an additional £100,000 with the same lender.
However, the additional borrowing is often offered on a separate mortgage product and interest rate, which means you could end up with two parts to your mortgage.
🏠 When does porting make sense?
Porting may be worth considering if:
✔️ You're currently on a competitive fixed-rate deal
✔️ Leaving your mortgage early would trigger significant early repayment charges
✔️ You want to avoid losing a favourable interest rate
✔️ Your lender's current rates are less attractive than your existing deal
⚠️ But porting isn't always the best option.
Many people assume porting is automatic.
It's not.
Your lender will usually assess your circumstances again, including:
• Income
• Affordability
• Employment status
• Credit profile
• Property details
Even if you already have a mortgage with the lender, you'll still need to meet their current lending criteria.
📉 Sometimes a brand-new mortgage could be more suitable.
Depending on your circumstances and what's available in the market, a completely new mortgage with a different lender may offer greater flexibility or better overall value.
That's why it's important to compare all available options rather than assuming porting is automatically the cheapest route.
🔍 Before deciding whether to port your mortgage, consider:
• Your current interest rate
• Any early repayment charges
• The amount you need to borrow
• Your future plans
• Available mortgage deals elsewhere
The key thing to remember is that porting doesn't mean transferring the mortgage itself to a new property—it's transferring the mortgage product, subject to approval.
For many homeowners, it can be a valuable way to keep a competitive rate and potentially save money when moving home. For others, exploring a completely new mortgage arrangement may be the better choice.
If you're thinking about moving in the next 6–12 months, it's worth reviewing your mortgage options early so you can make an informed decision before finding your next home.
