Key facts
- Primary keyword: remortgaging - independent editorial guide, no commission
- Primary sources: FCA, gov.uk, Money and Pensions Service
- Last reviewed June 2026 by Chandraketu Tripathi, Finance Editor
What Is Remortgaging?
Remortgaging means replacing an existing mortgage with a new deal, either staying with the same lender on a new rate (a product transfer) or switching to a different lender entirely. Remortgaging is triggered most commonly when a fixed-rate or tracker period ends and the mortgage reverts to the lender's standard variable rate.
The SVR is typically 1 to 3 percentage points higher than deals available through remortgaging. UK Finance data shows hundreds of thousands of borrowers are on SVR at any given time, paying more than necessary because they have not remortgaged. For a 200,000 pound mortgage, remortgaging from a 7.5 percent SVR to a 5 percent fixed rate saves approximately 4,000 pounds per year.
Remortgaging can also be used to release equity from a property for home improvements, to change the mortgage term, or to consolidate debts into the mortgage - though debt consolidation through remortgaging requires careful analysis of total cost over the extended loan term.
When to Start the Remortgaging Process
The optimal time to begin remortgaging is three to six months before the current deal expires. Many lenders allow borrowers to lock in a new rate up to six months in advance without triggering an ERC on the current product, protecting against rate increases during the intervening period.
Borrowers who have not considered remortgaging recently and are sitting on SVR should act immediately. The process of remortgaging to a new lender typically takes four to eight weeks, meaning there is no benefit to waiting once on SVR.
Remortgaging when the loan-to-value has improved unlocks better rates. Moving from 85 to below 80 percent LTV, or from 75 to below 60 percent, typically triggers a materially lower rate at remortgaging. This improvement comes from capital repayments, property value appreciation, or both.
Product Transfer vs Full Remortgaging
A product transfer stays with the existing lender and switches to a new rate without a full application. It is faster, involves fewer fees, and requires no valuation or legal work. The FCA Mortgage Charter requires participating lenders to offer product transfers without a full affordability reassessment.
Full remortgaging to a new lender requires a complete affordability and credit assessment, property valuation, and legal work to transfer the mortgage charge. This takes longer and costs more in fees, but rates from a new lender may be significantly better than the product transfer options available.
For most borrowers, the decision between a product transfer and full remortgaging comes down to comparing rates. A whole-of-market broker can run this comparison in minutes and identify whether full remortgaging or a product transfer produces the lower total cost over the next fixed period.
Remortgaging Costs
Arrangement fees for new mortgage products typically range from zero to 2,000 pounds. Whether a fee-paying product is cheaper than a fee-free alternative depends on the mortgage balance and the rate differential. For larger mortgages above 200,000 pounds, paying a 999 pound fee to secure a 0.2 percent lower rate typically saves more over a five-year fix than taking the fee-free product.
Valuation fees are typically zero to 500 pounds, with many lenders offering free valuations as part of a remortgaging package. Legal fees are typically 500 to 1,500 pounds for a straightforward remortgaging case, with some lenders offering free legal work through a panel solicitor.
Early repayment charges apply if remortgaging before the end of a fixed or tracker period. ERCs typically range from 1 to 5 percent of the outstanding balance in the first year, reducing annually. Calculate whether the saving from remortgaging to a better rate outweighs the ERC cost.
How the Remortgaging Process Works Step by Step
The remortgaging process begins with comparing products across the market, ideally using a whole-of-market broker. A mortgage illustration (ESIS document) is provided for any recommended product. Once a product is selected, the borrower submits a full application.
The lender assesses income, outgoings, credit history and property value. A valuation is arranged. Legal work is handled by the lender's panel solicitors or the borrower's own solicitor. The remortgaging completes when the old mortgage is redeemed using the new mortgage proceeds and the mortgage charge is transferred.
The remortgaging process typically takes four to eight weeks from application to completion. Submitting all required documentation promptly - payslips, bank statements, proof of address, employer details - avoids delays. Remortgaging at the right time, before the current fix expires rather than after reverting to SVR, produces the maximum saving.
Common Remortgaging Mistakes to Avoid
Starting the remortgaging process too late is the most common mistake. Leaving insufficient time before the current deal expires means paying SVR for weeks or months unnecessarily. Beginning remortgaging three to six months before expiry eliminates this risk.
Accepting the first product transfer offer from the existing lender without comparing the full market is another frequent error during remortgaging. The lender is not obligated to offer the most competitive rate to existing customers and the product transfer rate may be worse than remortgaging to a new lender.
Choosing the lowest headline rate without accounting for arrangement fees during the remortgaging comparison produces an inaccurate cost assessment. Calculating total cost over the full fixed period - rate plus fees - is the only reliable basis for comparing remortgaging options. Applying to multiple lenders individually creates unnecessary hard credit searches; a broker submits a single targeted application. Remortgaging is one of the highest-value financial actions a homeowner can take. For a 250,000 pound mortgage, remortgaging from SVR to a competitive fixed rate can save 5,000 to 8,000 pounds per year. Beginning the remortgaging process at the right time and comparing the full market ensures the maximum saving is captured at every product renewal.
Disclaimer: This guide is for informational purposes only and does not constitute financial advice. Mortgage products, eligibility criteria and regulations change frequently. Consult an FCA-authorised mortgage adviser before making any decision. Kael Tripton Ltd is not authorised or regulated by the Financial Conduct Authority.
Frequently Asked Questions
What does remortgaging mean?
Remortgaging means replacing an existing mortgage with a new deal, either a product transfer with the same lender or switching to a different lender entirely. Remortgaging is most commonly done when a fixed-rate period ends to avoid reverting to the lender's higher standard variable rate.
When should I start remortgaging?
Start the remortgaging process three to six months before the current fixed-rate deal expires. Most lenders allow rates to be locked in up to six months in advance without triggering an early repayment charge on the current product.
Does remortgaging affect my credit score?
Full remortgaging to a new lender involves a hard credit search which temporarily reduces the score. A product transfer with the existing lender typically uses only a soft search with no score impact.
How long does remortgaging take?
Full remortgaging to a new lender typically takes four to eight weeks from application to completion. A product transfer with the existing lender can be arranged more quickly, sometimes within days.
Is remortgaging worth it?
Remortgaging is typically worth it when the current deal has expired and the mortgage has reverted to SVR. Even during a fixed period, remortgaging may be worth paying the early repayment charge if the rate saving over the remaining term exceeds the ERC cost.
Sources
Last reviewed June 2026 by Chandraketu Tripathi, Finance Editor, Kaeltripton.com
