Love your low mortgage rate, but feel your home is bursting at the seams? You might feel trapped, thinking that a move automatically means giving up that great deal and facing today’s higher interest rates. But many mortgages include a powerful feature that directly answers the question, “Can I take my mortgage with me when I move?” It’s known as a portability check and is central to understanding mortgage portability.
Think of it like moving your mobile phone contract to a new handset. You get to keep your plan—your interest rate and terms, but simply apply it to a new device, which in this case is your new home. This process is called “porting,” often described as mortgage portability or home loan portability within the mortgage transfer process. In practice, porting a mortgage means transferring your current deal from one property to another, allowing you to move house and keep the same mortgage rate.
However, it’s crucial to understand that porting is a feature of your existing loan, not an automatic right. Your lender will require a full new application, meaning you’ll have to pass their affordability checks all over again. Your ability to port ultimately depends on your financial situation meeting the lender’s criteria at the time you apply. These lender criteria are governed by each provider’s mortgage portability rules.
Summary
Porting lets you move home while keeping your current mortgage rate and terms, often avoiding Early Repayment Charges (ERCs), but approval depends on passing a fresh affordability and property assessment with your lender. If upsizing, you keep the old rate on your existing balance and add a new top-up at current rates; if downsizing, a partial ERC may apply to the repaid portion. Deciding between porting and remortgaging hinges on which option costs less overall, considering ERCs and current market rates. Start by confirming portability in your offer, calculating any ERC exposure, and speaking with your lender or a broker.
How Porting Helps You Avoid Thousands in Early Repayment Charges (ERCs)
If you’re on a fixed-rate deal, there’s one major hurdle to moving house: the Early Repayment Charge (ERC). Think of this as an exit fee that your lender charges for paying off your mortgage before the fixed term is over. The exact amount, usually a percentage of your loan, is a key detail you’ll find spelt out in your original mortgage offer documents.
An ERC is often between 1% and 5% of your outstanding mortgage balance. On a £200,000 mortgage, a 3% ERC means you would have to pay a £6,000 fee just to move. For most homeowners, that’s a painful and unexpected cost that can put a serious dent in a moving budget.
This is where porting becomes your financial lifeline. By transferring your current mortgage deal to your new home, you aren’t technically breaking the agreement, so the ERC doesn’t apply. You’re just taking it with you. This makes porting a fixed-rate mortgage, the approach often called mortgage portability, the primary strategy for avoiding early repayment charges when moving. However, it’s not automatic; your lender still has to approve the transfer.
Is Porting Guaranteed? The Critical Lender Checks You MUST Pass
While porting is a fantastic option for avoiding those costly ERCs, it’s crucial to understand that it’s not a given. Think of it less like a simple change of address and more like applying for a brand-new mortgage with your existing lender as part of the mortgage transfer process. You have to prove you are still a good candidate for the loan.
The main hurdle you’ll face is the lender’s affordability assessment. Your lender will re-examine your entire financial situation as it is today, not as it was when you first took out the mortgage. They need to be confident you can still comfortably afford the repayments based on current lending rules and any mortgage portability rules your lender applies, your income, and your outgoings.
Because this is a fresh check, any significant changes to your life since your original application can impact the lender’s decision. They will look closely at your current circumstances.
Common Reasons a Porting Application is Denied:
- Your income has decreased, or you’ve had a reduction in hours.
- You’ve recently become self-employed and don’t have enough years of accounts.
- Your credit score has dropped due to missed payments or new debt.
- The new property doesn’t meet the lender’s criteria (e.g., unusual construction).
If your finances are the same or better, you stand a good chance. But what if your plans involve moving to a more expensive home? This adds another layer to the process.
Porting Your Mortgage for a More Expensive House: How It Works
It’s very common to need more space, which often means buying a pricier home. You can’t simply add money to your existing mortgage deal. Instead, you apply for what’s known as a ‘top-up’ loan alongside your ported mortgage. This is the additional borrowing you need to cover the difference in price, and your lender will assess your ability to afford this larger total amount.
Crucially, this extra cash will be treated as a separate loan with a new interest rate, based on the deals available today. This means you will effectively have two parts to your mortgage: your original loan amount at its great low rate, and the new ‘top-up’ amount at a different, likely higher, rate. Both parts are secured against your new property.
For example, imagine you have £150,000 left on your 2% mortgage. If your new home costs £250,000, you would port the £150,000 at 2% and apply for a £100,000 top-up loan. That new £100,000 might come with a 5% rate, reflecting the current market. This setup works well for upsizers, but what happens if your new home is cheaper?
What Happens if Your New Home is Cheaper? Porting for Downsizers
Moving to a smaller or less expensive home is a common goal, but it presents a wrinkle when porting your mortgage. Because you are effectively paying back a portion of your loan ahead of schedule, this can trigger the Early Repayment Charge (ERC) we mentioned earlier. This is a key reason many people incorrectly assume porting isn’t an option for them when downsizing.
Thankfully, you usually won’t have to pay the full charge. Instead, lenders often require a partial ERC, calculated only on the amount of the loan you’re paying back early. For example, if your mortgage is £150,000 but you only need to port £100,000 for your new home, a 3% ERC would only apply to the £50,000 difference. This would result in a £1,500 fee, not the £4,500 you’d owe on the entire balance.
While nobody wants to pay a fee, this partial charge is almost always significantly less than the penalty for ending your mortgage deal completely. It allows you to keep your favourable interest rate on the majority of your borrowing while still making your move. This calculation is a critical step in deciding if porting is truly the best financial choice for you.
Porting vs. Remortgaging: Which Is Right for Your Move?
While mortgage portability allows you to transfer your deal, it’s not your only option. Another route is to remortgage, ending your current agreement and starting a new one through the standard mortgage transfer process. The alternative is to remortgage: paying off your current loan (and any associated fees) and taking out a completely new one for your new property. Deciding between porting a mortgage vs remortgaging comes down to a simple question: which one will cost you less?
The best choice depends entirely on your specific deal and current interest rates. Thinking through the cost of porting a mortgage against the cost of a new deal is essential. Here’s a quick guide to help you decide.
Should You Port Your Mortgage or Remortgage?
When your current mortgage deal still has time left on it, deciding whether to port your mortgage or remortgage comes down to cost and opportunity.
Porting your mortgage may be the better option if your Early Repayment Charge (ERC) is still high, potentially several thousand pounds and your current interest rate is significantly lower than what’s available on the market now. Keeping your existing deal could save you money in the short and long term. Porting also avoids ERCs altogether, provided your lender approves the application and you meet their criteria for the new property.
On the other hand, remortgaging becomes more appealing if your ERC is low or has expired entirely, and new mortgage rates are cheaper than the ones you’re currently on. In this case, paying off the old mortgage and securing a new deal, even with a small penalty, could result in much lower monthly payments over time.
However, if your lender rejects your request to port, remortgaging may be your only viable option, even if it means paying the ERC. While it can feel counterintuitive to pay a penalty fee, securing a better interest rate now can generate long-term savings that outweigh the initial cost.
Your 3-Step Action Plan for a Portability Check
Moving house while tied to a great mortgage rate doesn’t have to be a financial roadblock. To begin your portability check and make a smart decision, follow these three clear steps. Use this as your portability check mortgage roadmap to keep things simple:
- Find Your Mortgage Offer: Dig out your original mortgage paperwork and look for a “portability” clause (sometimes listed under mortgage portability rules). This confirms if your deal can travel with you.
- Estimate the Alternative: Check your terms for the Early Repayment Charge (ERC). Knowing this figure shows you the potential thousands you could save.
- Speak to an Expert: Call your lender or a mortgage broker to discuss the mortgage porting application process and the mortgage transfer process. They can provide advice tailored to your specific situation.
Your mortgage shouldn’t be an anchor holding you back; it can be a valuable asset that moves with you. Understanding the porting process puts you in control of your next chapter.
Need help securing the right mortgage??
Whether you’re a first-time buyer, remortgaging, or need specialist lending advice, our Halifax-based team has access to thousands of mortgage products from across the market. We’ll guide you through every step and help you find the right solution for your specific circumstances. Need help navigating the mortgage portability process or comparing porting vs. remortgaging? Our expert brokers can guide you based on your unique situation.
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Important information about this guide
This mortgage and protection guide was prepared by at Woodhall Mortgages. Since 2016, we’ve helped hundreds of clients arrange suitable mortgages and related protection through our service and have received over 120 five-star client reviews.
Please note: This information is for general guidance only and does not constitute personal financial advice on mortgages or protection products. Every case is different, so we recommend speaking to one of our advisers for recommendations based on your individual circumstances and needs.
YOUR HOME MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON YOUR MORTGAGE.
Woodhall Mortgages is authorised and regulated by the Financial Conduct Authority (FCA: 762513).
If you would like personalised advice, please contact our team to arrange an initial discussion so we can understand your situation and explain your options.
