Remortgaging: 4 common mistakes to avoid if you’re switching your home loan

Remortgaging: 4 common mistakes to avoid if you’re switching your home loan

If your current mortgage deal is coming to an end, it’s easy to focus on the headline rate and leave the rest until later. But remortgaging is a process with deadlines, underwriting checks and product choices that can affect both cost and outcome.

Below are four common mistakes borrowers make when switching their home loan—and what to consider to help keep your remortgage on track.

1) Waiting until the last minute to start the remortgage

A remortgage can take time. Even when you’re not moving house, lenders still need to review information, confirm details and complete the switch.

If you leave it too late, you may not have a new deal in place before your current fixed or tracker period ends. That can mean you’re placed on your lender’s standard variable rate (SVR), which is often less competitive than fixed or tracker alternatives.

What to do instead

• Start planning early—many borrowers begin their remortgage discussions several months before the end of their current deal.
• Check your mortgage paperwork for the exact end date and any notice requirements.
• Build in time for document gathering (for example, proof of income and identification) and lender processing.

2) Applying for new credit right before remortgaging

It’s common to think that paying everything on time will “cancel out” any new borrowing. However, lenders assess affordability and risk at the time you apply.

Taking on additional credit shortly before a remortgage can create issues such as:

• A reduced affordability assessment outcome due to higher monthly commitments
• A change in your credit profile that affects how you’re viewed by lenders
• More “hard” credit searches, which can be a concern when multiple applications are made close together

What to do instead

• Avoid new credit applications while your remortgage is being arranged.
• If you’re considering any major financial changes (for example, a car finance agreement or a credit card balance transfer), factor them into your remortgage timeline.
• If you’re unsure how something might affect your application, it’s worth discussing it before you proceed.

3) Automatically staying with your existing lender (without shopping around)

When your deal ends, many borrowers consider a product transfer—switching to a new deal offered by the same lender. That can be convenient, and in some cases it may be quicker.

However, staying purely out of habit can limit your options. Other lenders may offer deals that better match your circumstances, such as different fixed-term lengths, repayment structures or fee arrangements.

What to do instead

• Treat your remortgage like any other financial product: compare options rather than assuming your current lender is best.
• Consider both the interest rate and the overall cost (including fees and any arrangement charges).
• If you do choose a product transfer, still review whether it remains competitive compared with alternatives.

4) Not getting the right support before you switch

Remortgaging can feel straightforward—especially if you’ve done it before. But the “best” option depends on more than just the rate, including your remaining term, repayment type, affordability, and any changes in your income or circumstances.

Without proper support, borrowers may:

• Choose a deal that doesn’t align with their plans (for example, term length or flexibility needs)
• Miss opportunities to reduce costs by comparing the wider market
• Underestimate how fees, product features or eligibility factors can affect the overall outcome

What to do instead

• Consider speaking to a qualified mortgage professional who can help you understand the options available to you.
• Use advice to pressure-test your plan: what you’re switching to, why it suits your situation, and what the trade-offs are.

Key takeaway

Remortgaging goes more smoothly when you plan ahead, avoid credit activity that could affect affordability, compare options rather than defaulting to loyalty, and make sure you’re choosing a deal that fits your circumstances—not just the moment.

If you’re switching your home loan, these four areas are a practical place to start so you can reduce the risk of costly surprises.