Mortgage switching is the process of moving your home loan from its current interest rate to a new deal. This is typically done to avoid moving onto a lender's expensive Standard Variable Rate (SVR) at the end of a fixed or tracker period.
When this guide was published in June 2026, Bank Rate was 3.75%. The difference between an SVR and a new fixed rate can be substantial: as an illustration only, on a £250,000 mortgage, switching from an 8% SVR to a 4.5% fixed rate could save over £450 per month.
What is mortgage switching?
Mortgage switching describes any scenario where you change your mortgage product. In the UK, this takes two primary forms: a product transfer with your existing lender or a full remortgage to a new provider.
With new FCA reforms introduced earlier this year, lenders are now required to provide clearer 'switching windows' to their customers. This ensures you have ample time to compare internal offers against the wider market before your current deal expires.
How does a product transfer work?
A product transfer is the simplest form of mortgage switching. You stay with your current lender but select a new rate from their available range. This is often an automated process that doesn't require a new property valuation or credit check.
Because you are already a customer, the legal work is minimal. Most lenders allow you to book a new rate up to six months before your current one ends. This provides a safety net against potential rate rises while you wait for your completion date.
Pro Tip: Don't assume your current lender will give you the best deal just because you are a loyal customer. Always compare their offer against the best mortgage rates available across our panel of 90+ lenders.
How does an external remortgage work?
An external remortgage involves moving your debt to a different bank or building society. This is a more involved process because the new lender must treat you as a new applicant. They will perform a hard credit check, an affordability assessment, and a valuation of your home.
While it involves more paperwork, switching to a new lender is often the only way to access the lowest rates in the market. Many lenders offer 'incentive' rates to attract new business that are not available to their existing customers.
| Feature | Product Transfer | External Remortgage |
|---|---|---|
| Timeframe | 24 hours - 2 weeks | 8 - 12 weeks |
| Credit Check | Usually none | Full hard check |
| Legal Fees | None | Often covered by lender |
| Valuation | Automated/Index-based | Physical or remote survey |
| Rates | Consistent but limited | Highly competitive deals |
Why should you consider switching in 2026?
As of June 2026, the mortgage market has stabilised significantly compared to the volatility of previous years. However, the 'SVR trap' remains a risk. SVRs are typically several percentage points higher than new fixed-rate deals. For guarded current-rate information, see our best mortgage rates page.
If you are a first-time buyer who reached the end of their first two-year fix, your loan-to-value (LTV) ratio has likely improved. This may move you into a lower risk bracket, unlocking even cheaper rates that your original lender might not provide.
When is the best time to switch?
You should start looking at your options six months before your current deal ends. This 'six-month window' allows you to lock in a rate. If rates drop during that period, you can often ditch that application and move to a cheaper one. If rates rise, you are protected.
If you switch too early, you may be liable for an Early Repayment Charge (ERC). These are typically calculated as a percentage of the outstanding loan. For example, a 3% ERC on a £300,000 mortgage is £9,000. It is rarely worth paying this unless the new rate is significantly lower over the long term.
Pro Tip: Use a mortgage calculator to check if the savings from a lower interest rate outweigh any arrangement fees. A 'low rate' with a £1,999 fee might be more expensive than a 'higher rate' with no fee.
Steps to switch your mortgage
- Check your current deal: Find your latest statement to see when your fixed rate ends and what the ERC would be.
- Get a valuation estimate: Use online tools to estimate your home's current value to determine your LTV.
- Review internal offers: Check your lender's app or website for their latest product transfer rates.
- Compare the market: Speak to us to see what 90+ other lenders are offering.
- Apply and secure: Once you choose a product, we manage the application through to completion.
What I tell my clients
I often see homeowners who feel a sense of loyalty to their bank, but the mortgage market doesn't reward loyalty—it rewards proactivity. In 2026, the 'speed of switch' has improved, but the complexity of lender criteria has increased. Whether you are looking for a remortgage or a product transfer, my advice is always the same: if the math doesn't show a clear saving after all fees are considered, it's not the right move. We do that math for you so you don't have to.
— Matt
Common costs associated with switching
- Product Fees: Usually around £999, though some fee-free options exist at slightly higher interest rates.
- Legal Fees: Typically free for 'straight' remortgages, but you may pay for a 'transfer of equity' if you are adding or removing a person from the deeds.
- Valuation Fees: Most lenders now offer free basic valuations for switchers.
- Broker Fees: At The Mortgage Genie, initial advice is free; if you proceed to application, a broker fee of typically £199–£299 may apply and is agreed in writing beforehand.
Protecting your switch
When you change your mortgage, it is also the perfect time to review your insurance. If your monthly payment has decreased, you might consider using those savings to bolster your life insurance or critical illness cover, ensuring your home remains safe even if your circumstances change.
For more detailed advice on specific scenarios, read our mortgage guides or check our latest market updates.
If you are ready to see how much you could save by switching, contact us today and one of our advisers will review your options from across our lender panel.