Product transfer explained: how it works

This page covers how a product transfer and a full remortgage each work, step by step. For choosing between them and the worked numbers, see the linked pages.

This guide answers one question: what a product transfer is, and what process usually sits around it. A product transfer (sometimes called a retention deal) is a new rate product with your existing lender. The mortgage account usually stays the same. You are not redeeming the loan and starting again with someone else.

A full remortgage, by contrast, replaces the current mortgage with a new one, typically with a different lender, including valuation, legal work and a completion that has to line up with redeeming the old loan. That contrast is here so the definition is clear. It is not the decision page.

Whether to stay or leave — fees, speed, criteria, the factor table — is on the remortgage vs product transfer comparison. The interactive totals are on the calculator. The short definition is the glossary entry. Your balance, rates, fees and early repayment charge (ERC) will differ from any EXAMPLE mentioned later.

Costs to note before you compare

Before comparing rates on either path, note any early repayment charge (ERC), exit fee, product or booking fee and cashback from your offer or Key Facts Illustration. The full fees-first checklist is on remortgage fees, and the shared EXAMPLE house worked through in pounds is on the product transfer vs remortgage worked EXAMPLE. For independent consumer guidance see MoneyHelper and the Financial Conduct Authority (FCA). Those sources explain process and protections; they are not a substitute for your own lender documents.

What a product transfer usually involves

With a transfer, the lender offers you a new fixed or other product on the same account. Underwriting is often lighter than a remortgage: many transfers do not need a new valuation or a conveyancer. Timing can be simpler near the end of a deal, because you are not coordinating a third-party completion.

That does not mean every transfer is “easy” or “cheap”. Retention rates are not always the best on the market. Some lenders still run affordability checks. Transfer products are lender-specific and not guaranteed. Always ask for written figures, including any fee and the new ERC schedule on the retention product.

What a full remortgage usually involves

Remortgaging to a new lender normally means an Agreement in Principle, application, valuation, offer and legal formalities. The new lender pays off the old one on completion. That can unlock a better rate or package — especially if your loan-to-value (LTV) has improved — but it takes calendar time and a fee stack that a retention letter may not carry.

If an ERC still applies on the old deal, the charge is part of the remortgage cost unless you wait until it falls away. Many households aim to complete on or after the ERC end date for that reason.

This page does not choose the path

Fees, an early repayment charge, time to completion and affordability criteria often decide whether a transfer beats a remortgage. That decision list, including the side-by-side factor table, lives on the comparison so it is not repeated here. This guide stops at what each path is.

Edge cases that change the comparison

The shared EXAMPLE assumes fees are paid upfront, the transfer needs no fresh checks and the property value is what you expect. Each of those can move. The rates below are EXAMPLE scenario rates, not quotes.

Fees added to the loan versus paid upfront

Many lenders let you add a product fee to the loan instead of paying it on completion. Legal and valuation costs are usually paid separately or covered by a free package. Adding a fee keeps cash in your pocket, but you pay interest on it for as long as it stays in the balance — a point MoneyHelper’s remortgaging guide makes with its own worked example. On the shared case at EXAMPLE 4.14% over 22 years:

• £999 product fee paid upfront: loan £185,000, about £1,068.80 a month.
• £999 added to the loan: loan £185,999, about £1,074.57 a month (about £5.77 more).
• Over the 24-month horizon, the added fee costs about £80 in extra interest, and about £941 of it is still owed at the end.
• Over the full 22 years it adds about £525 of interest, so the £999 fee costs about £1,524 in total.

The same arithmetic applies to any fee on a product transfer, though the shared EXAMPLE transfer has none. The true cost calculator has an “Add product & other fees to loan?” option. It adds every fee line you enter, so run it both ways to compare.

Underwriting: product transfer versus full remortgage

These are typical patterns, not rules every lender follows. Your lender’s process, and whether you change the loan, decide which checks apply.

• Affordability: a like-for-like transfer with no extra borrowing often has no full affordability assessment. MoneyHelper notes that some product transfers do not need one. A new lender normally assesses income and outgoings in full.
• Borrowing more: adding a further advance to a transfer usually brings income checks, and sometimes a valuation, for at least the extra amount.
• Credit search: a transfer often involves no hard credit search. A new-lender application usually does.
• Valuation: a transfer usually relies on the lender’s own or indexed view of the property. A new lender normally instructs its own valuation, which may be a desktop or automated one.
• Legal work: a transfer usually needs no conveyancer. A remortgage needs legal work to redeem the old charge and register the new one, often through a free legal package.
• Criteria: a new lender applies today’s criteria on income, employment, credit history and the property. Changes since the original loan matter more there.

When the valuation comes in lower than the value you typed

Loan to value is the balance divided by the value the lender accepts, not the figure you type into a calculator. On the shared case, £185,000 against an illustrative £250,000 is 74% LTV, inside a typical 75% band. If the new lender’s valuation comes in at £240,000, LTV becomes about 77.1%. That crosses the 75% line into a typical 80% or 85% band, where EXAMPLE rates are often higher than the EXAMPLE 4.14% priced at 74%.

• To get back to 75% at £240,000, the balance would need to fall to £180,000 — about £5,000 of capital — or the valuation would need to be at least about £246,667.
• Adding the £999 product fee makes the loan £185,999: about 74.4% at £250,000, still inside 75%, but about 77.5% at £240,000. Lenders differ on whether an added fee counts toward the band, so ask.
• A product transfer usually prices on the lender’s own LTV view rather than a fresh valuation, so a lower market valuation may matter less there. Typically, not always.

An offer usually depends on the valuation. If it comes in lower, the lender can change the product or the amount it will lend. MoneyHelper notes that you can ask the lender to reconsider a valuation you think is too low, with evidence such as comparable sales. Try both values in the LTV and equity calculator and the remortgage vs product transfer calculator before you apply.

Where the full worked EXAMPLE lives

This page stays conceptual: what a transfer is, what a remortgage involves, and which factors tip a comparison. The full two-column sterling walkthrough — same EXAMPLE house (£185,000 · 22 years · EXAMPLE 4.19% with four months left · transfer 4.39% · new-lender 4.14% · fees £1,499 · cashback £250 · ERC 2% = £3,700 · 24-month horizon) — sits on product transfer vs remortgage EXAMPLE. That companion page holds the interest totals, net fee maths and early-exit ERC case so this guide does not duplicate the columns.

Edit the same starters in the Remortgage vs product transfer calculator and the Remortgage true cost calculator. Neither tool is advice. Both exist so you can see the arithmetic before you speak to a lender or an adviser. Last checked: 11 October 2026.

Criteria, features and certainty

Cost is not the only axis. A full remortgage usually re-tests affordability and credit, while a transfer often does not; features and the certainty of a start date can also matter. Those soft factors are weighed side by side on the remortgage vs product transfer comparison, so this guide does not repeat them.

Sources and further reading

We write in our own words. For independent consumer guidance, see MoneyHelper on remortgaging and the FCA’s consumer mortgages pages. UK Finance also publishes industry insight on the mortgage market. Those pages explain process and context. They are not a substitute for reading your own lender documents.

Disclaimer

Illustrative only: not personalised advice, not a mortgage offer and not an FCA-regulated recommendation. Your offer and ESIS set the real ERC, fees and terms.

Next steps

Put your own figures through the Remortgage vs product transfer calculator and the Remortgage true cost calculator. Read your current offer, any retention quote, and any new-lender illustration carefully. If you want regulated advice on which path fits your circumstances, consider an FCA-authorised adviser. This site helps you organise the numbers; the decision is yours.