In short: a remortgage adviser works out whether moving your mortgage to a new deal, or to a new lender, leaves you better off once every cost is counted. The comparison that matters is not the headline rate – it is total cost across the deal period including exit charges, product fees, valuation and legal work, set against what you would pay by staying put or taking your existing lender’s product transfer.

By Damian Youell, Senior Mortgage Broker and Company Director at NeedingAdvice.co.uk

Most remortgage conversations start the same way: a letter from the lender saying the fixed period ends in a few months, and a quiet worry about what happens next. There are really only three options, and an adviser’s job is to work out which is actually cheapest for you rather than which looks cheapest.

Your three options at the end of a deal

Option What it involves Where it usually wins
Do nothing You roll onto the lender’s standard variable rate automatically. Rarely the cheapest outcome, but it keeps you flexible if you are about to move or your circumstances are in flux.
Product transfer A new deal with your existing lender. Usually no new affordability assessment, no valuation, no legal work. Speed and certainty. Strong where your income is harder to evidence now than when you first borrowed, or where the property has become non-standard.
Remortgage A new mortgage with a different lender. Full application, affordability assessment, valuation and conveyancing. Where another lender’s terms are materially better, or where you want to change the loan itself – borrow more, change the term, add or remove a person.

The costs people forget to count

A remortgage that looks better on rate can end up worse once switching costs are added. Before comparing anything, get these onto one page:

  • Early repayment charge. If you leave your current deal before it ends this is usually a percentage of the outstanding balance, and is often the largest single number in the calculation.
  • Exit or deeds release fee. Payable to the outgoing lender even after the deal period has ended.
  • Product or arrangement fee. Charged by the new lender. It can often be added to the loan, but adding it means paying interest on it for the full term.
  • Valuation and legal costs. Many remortgage products include a free valuation and standard legal work. Many do not. Check which.
  • The term you end up on. Extending the term lowers the monthly payment and raises total interest paid. That is a trade-off, not a saving.

When remortgaging is about more than rate

Plenty of remortgages happen for reasons that have nothing to do with pricing:

  • Raising capital for home improvements, or to consolidate other borrowing. Consolidating unsecured debt into a mortgage converts it into debt secured on your home and usually spreads it over a much longer period, so it is not automatically the cheaper route.
  • Changing who is on the mortgage after a separation, a bereavement, or bringing a partner on. This is a transfer of equity and involves legal work regardless of lender.
  • Moving from interest only to repayment, or the reverse.
  • Changing use – for example converting a residential mortgage to buy to let when you move out rather than sell.
  • Improved loan to value. If the property value has risen or the balance has fallen you may have moved into a lower LTV band, which changes the product range open to you.

Timing, and why six months matters

Most lenders let you secure a new deal several months before your current one ends, commonly up to six. Doing so early gives you a held offer while you keep looking, and if better terms appear before completion you can usually switch to them. Leaving it to the last few weeks removes that optionality and risks a spell on the standard variable rate while the case completes.

Remortgage applications are assessed on your circumstances today, not the ones you had when you first borrowed. If your income has changed, you have become self-employed, you have taken on car finance, or adverse credit has appeared on the file since, that affects what a new lender will offer – and is often the reason a product transfer with your existing lender turns out to be the better route.

What a remortgage adviser should actually do

At minimum: obtain your existing lender’s product transfer offer and treat it as a genuine option rather than a formality; calculate total cost for each route across the deal period rather than comparing monthly payments; be clear about which costs are payable whatever happens; and tell you plainly when staying put is the right answer. An adviser who never recommends the product transfer is not comparing properly.

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