Millions of UK homeowners sit on their existing lender's deal for longer than necessary, often paying far more than they need to. Switching lenders — as opposed to simply moving to a new deal with your current one — can unlock genuinely lower rates, but it involves more steps and a slightly different process. Here's how it works.
Why switch lenders rather than stay put?
When your current fixed or tracked deal ends, you're usually moved onto your lender's Standard Variable Rate (SVR) — typically among the most expensive rates that lender offers. Rather than accepting the SVR or even your existing lender's "in-house" retention deal, shopping the whole market often reveals a materially better rate elsewhere, because lenders compete hardest for new customers.
Switching vs a product transfer: know the difference
A product transfer means moving to a new deal with your existing lender, with no new underwriting or legal work. Switching lenders means moving your mortgage to an entirely new lender, which involves a full application, affordability assessment, and (usually) legal work, but opens up the whole market rather than just your current lender's offers. See our dedicated comparison of product transfers vs remortgaging for the full trade-offs.
Step-by-step: how to switch lenders
- Check your current deal's end date and any Early Repayment Charges (ERCs). Switching before your fixed term ends can trigger a penalty — see the section below.
- Review your current mortgage balance, term remaining and property value to establish your loan-to-value, which affects which rates you'll qualify for.
- Compare the whole market, ideally via a mortgage broker who can access deals not always available directly, alongside checking a few lenders' direct rates yourself.
- Apply for a mortgage in principle with your chosen new lender to confirm likely acceptance before committing.
- Submit a full application, including proof of income, bank statements and identity documents.
- Instruct a solicitor or conveyancer — many remortgage deals include free legal work as an incentive, so check what's included.
- Complete — your new lender pays off your old mortgage directly and your new deal begins.
Timing: when to start the process
Start comparing rates around 4–6 months before your current deal ends. Many new mortgage offers are valid for 3–6 months, so applying early lets you lock in a rate even if it takes a little while for the switch to complete, and you can usually still switch to a better rate later if one becomes available before completion.
Watch out for Early Repayment Charges
If you're still within a fixed or discounted deal period, switching early usually triggers an ERC, often calculated as a percentage of your outstanding balance (commonly 1–5%, sometimes tapering down each year of the deal). Always calculate whether the savings from a lower rate outweigh the ERC before switching mid-deal — our Remortgage Cost & Savings Calculator does this comparison for you.
Costs to weigh against the savings
| Cost | Typical range |
|---|---|
| Product / arrangement fee | £0–£1,999 (can often be added to the loan) |
| Valuation fee | Often free with remortgage deals |
| Legal fees | Often free or a fixed £150–£300 if not included |
| Early Repayment Charge (if applicable) | 1–5% of outstanding balance |
| Exit / mortgage discharge fee | £50–£300, charged by your old lender |
Will a new lender definitely accept you?
Not necessarily. Your circumstances may have changed since you took out your original mortgage — income, employment status, credit history, or even new debt can all affect a new lender's assessment. This is one reason a product transfer with your existing lender can be a useful fallback, since it typically involves lighter underwriting.
The bottom line
Switching mortgage lenders can lead to meaningful savings, particularly if you've drifted onto an SVR, but it requires more legwork than a same-lender product transfer. Start early, factor in all fees and any ERC, and use a whole-of-market comparison — ideally with a broker — to be confident you're genuinely getting the lowest available rate for your circumstances.