Published 8 November 2026. Last reviewed 8 November 2026.
When your current mortgage deal is nearing its end, your lender will usually offer two broad routes: a product transfer, which means staying with your existing lender and moving onto a new deal with them, or a remortgage to a new lender. A product transfer keeps everything under one roof, while a remortgage to a new lender opens up a different set of rates and terms but involves a fresh application. This guide compares the two side by side, covering underwriting, fees, Early Repayment Charges, flexibility and total cost. It is general information rather than personal advice, and the right choice depends on your circumstances.
What is a product transfer mortgage?
A product transfer means switching from your current mortgage deal to a new one with the same lender. For example, if your two-year fixed rate is ending, your lender may write to you with follow-on deals you could move onto without leaving them. In many cases this involves a lighter process than a full new application, because the lender already holds your details. It is not automatic: you still choose a deal from the options your lender offers, and the rates and terms available depend on that lender’s current range.
Because the mortgage stays where it is, there is usually no change of legal charge and, in many cases, no fresh valuation. That is a large part of the appeal: it can be a simpler and quicker route. The trade-off is that you can only choose from the deals that particular lender is offering at the time, which may or may not compare well with the wider market.
What is a remortgage to a new lender?
A remortgage means replacing your existing mortgage with a new one, usually with a different lender. Because you are a new customer to that lender, they will carry out full checks: affordability, credit history, income evidence and usually a valuation of the property.
The upside is choice. A remortgage can give you access to a much wider range of products, not just those offered by your current lender, and may allow things such as borrowing more, changing your term or switching repayment method. The downside is that a full application takes more time, and there may be costs involved, such as arrangement, valuation and legal fees.
Product transfer vs remortgage: side-by-side comparison
The table below compares the two options across the factors that tend to matter most. Treat it as a map of the trade-offs, not a verdict on which is better.
| Factor | Product transfer (stay with current lender) | Remortgage (new lender) |
|---|---|---|
| Assessment and underwriting | Usually a lighter process, as the lender already holds your records. In many cases there is no new affordability deep-dive, though some lenders do re-run checks or ask for updated information. | Full underwriting: affordability, credit checks, income evidence and, in most cases, a valuation. More thorough, and more can go wrong at this stage. |
| Speed and administration | Often quicker and simpler to arrange, with less paperwork and usually no solicitor needed. | Generally slower. Involves a solicitor to handle the legal transfer, plus forms, evidence and a valuation appointment. |
| Choice of deals | Limited to that lender’s current product range. If their rates are not competitive, your options are constrained. | Wider choice across many lenders’ ranges, potentially with different rates, terms, incentives or product features. |
| Costs and fees | Often low or no fees, though this varies and some product transfers do carry an arrangement fee. Check the specific deal. | Arrangement, valuation and legal fees can apply, though some deals offer cashback or free legal work. Weigh these against any rate difference. |
| Flexibility | Limited to the flexibility your current lender offers, such as their rules on overpayments or term changes. | Can open up different terms, overpayment allowances, longer or shorter terms, or options such as capital raising. |
| Early Repayment Charge | Switching onto a follow-on deal when the old one ends usually means no Early Repayment Charge, but check the terms: charges can apply if you switch mid-deal or leave during a tie-in period. | Leaving your current deal before it ends usually triggers an Early Repayment Charge. Arranging for a new mortgage deal to begin when your existing deal ends will generally avoid an Early Repayment Charge, subject to your current mortgage terms. If no new deal is in place when your existing product expires, you will usually move onto your lender’s standard variable rate. |
| Tends to suit | Homeowners whose lender’s follow-on rate is competitive, whose circumstances have not changed much, and who value a simple, quick switch. | Homeowners who want to compare the wider market, whose circumstances have changed, or who need features their current lender’s range does not offer. |
The core trade-off is convenience versus choice. Neither option is automatically better: a product transfer can be the cheaper and simpler route if the rate is competitive, while a remortgage can pay for itself if a different lender offers a meaningfully better deal once fees are factored in. What tends to matter most is the total cost over the comparison period (rate, fees and any Early Repayment Charge), rather than the headline rate alone.
Before comparing the two options, ask your current lender what follow-on deals they will offer when your fixed or tracker period ends. That figure gives you a baseline to measure any remortgage offer against, and helps you see whether the alternative is genuinely better or simply different.
Early Repayment Charges: what to watch for either way
An Early Repayment Charge is a fee some lenders apply if you leave a deal before it ends or repay a lump sum above an agreed allowance. It matters in both directions:
- If you remortgage to a new lender before your current deal ends, an Early Repayment Charge usually applies. Arranging for your new mortgage deal to begin when your existing deal ends will generally avoid an Early Repayment Charge, subject to your current mortgage terms. If no new deal is in place when your existing product expires, you will usually move onto your lender’s standard variable rate, which is often higher.
- If you take a product transfer, lenders will usually let you move onto the new deal without an Early Repayment Charge once the old one ends, but check the new product’s terms: some follow-on deals carry their own tie-in period.
- Timing matters. Starting the comparison a few months before your deal ends gives you room to arrange a new deal without rushing.
Risks and limitations to weigh up
- A lower rate is not always a lower cost. A remortgage with a lower headline rate can still cost more overall once arrangement, valuation and legal fees are added in, particularly over a short period. Equally, a fee-free product transfer is not automatically cheaper if the rate is noticeably higher than the wider market.
- Capital raising increases secured debt. A remortgage to borrow more means the extra debt is secured on your home. It can be useful for large costs such as home improvements, but it is repaid over the mortgage term with interest.
- Debt consolidation can cost more overall and put your home at risk. Moving unsecured debts onto a mortgage may reduce the monthly payment, but usually increases the total interest and the repayment period, and the home is at risk if you cannot keep up the payments.
- Not every application is approved. A remortgage involves full underwriting, so changes in income, employment, credit history or property value since you took out your current mortgage can affect the outcome. A product transfer also depends on your lender’s current criteria and product availability.
- Criteria and products change. Lenders alter their ranges and policies regularly, and general online information cannot confirm that any specific deal will still be available when you apply.
Your home may be repossessed if you do not keep up repayments on your mortgage.
General online guidance cannot confirm that an application will be accepted, that a particular rate will still be available, or what your individual circumstances will support. The outcome depends on the lender’s current criteria and a full assessment of your position.
When each option may tend to suit
As the table above suggests, the situations where each route fits tend to look like this:
- A product transfer may tend to suit you if your current lender’s follow-on deal compares well with the wider market, your income and credit position have not changed materially since you last applied, and you want to avoid fees, valuations and legal work.
- A remortgage may tend to suit you if you want to compare rates and terms across the market rather than one lender’s range, your circumstances have changed in either direction since you took out the mortgage, you need features such as a different term or capital raising, or you are happy to go through a fuller application in return for potentially better terms.
These are broad patterns rather than rules. The right option depends on the rate, fee and Early Repayment Charge position of the deals available to you at the time, as well as your plans for the property.
How to compare your options in practice
- Ask your current lender for their product transfer options, and note the rate, fee and any conditions attached to each.
- Find out the end date of your current deal, and check what rate you would move to if you did nothing (usually the standard variable rate).
- Check whether an Early Repayment Charge applies if you leave before the deal ends, and when it stops applying.
- Compare total cost over the period you plan to stay, including fees, valuation and legal costs where relevant, not just the headline rate.
- Consider whether your circumstances have changed since you last applied, and whether that affects eligibility for either route.
- If you are unsure, speak to a mortgage adviser, who can compare your current lender’s offer against the wider market and explain the trade-offs in your situation.
Continue your research
For the wider context, read Remortgaging: how to review your mortgage before your deal ends and How early should I start a remortgage? You can also read about our remortgage advice service or explore the wider Remortgages Knowledge Centre.
If you’d like to discuss how this applies to your circumstances, you can contact Conrad Financial Services. Appointments are available by telephone, by video or face to face in Dorset, with advice covering England and Wales. We’ll explain any fees clearly before you commit to anything, and there’s no pressure to proceed.
