When your fixed (or tracker) deal ends and you haven't arranged a new one, your lender automatically moves you onto its Standard Variable Rate (SVR) — no application, no decision from you required, it just happens. SVRs averaged above 7% in August 2026, well above typical fixed rates around 5.6%. There's no cap on how high an SVR can go, and no time limit on how long you can sit on it.
What the SVR actually is
The Standard Variable Rate is each lender's own default rate, set by them and changeable at their discretion — it's loosely influenced by the Bank of England base rate, but lenders aren't obliged to move it in lockstep, and different lenders' SVRs vary significantly from one another. It's the rate every mortgage reverts to once a fixed, tracker or discount deal period ends, unless you actively arrange something else.
Why this happens to so many people
It's not usually carelessness — it's that fixed deals end quietly. There's no dramatic notification event; you might get a letter, but the switch to SVR happens automatically and immediately at the end of your term whether or not you've engaged with it. Life gets busy, the letter gets missed, and the rate change first becomes visible as a bigger direct debit.
Unlike some subscription services, there's no automatic "warning, then a cheaper backup rate" — you move to SVR the day your deal ends, at whatever rate the lender has set at that time, and stay there until you actively switch.
How to make sure it doesn't happen to you
- Find your deal end date — check your original mortgage offer letter, or ask your lender directly if you're not sure.
- Set a reminder for 5–6 months before that date, not the date itself.
- Get a product transfer quote from your current lender — most show this in your online banking with no credit impact, and many let you lock it in months ahead at no cost.
- Compare it against the open market — either yourself or with a broker — since your lender isn't obliged to offer you their best available rate just because you're already a customer.
- Lock in your choice before your current deal ends. Most new-deal offers are valid for three to six months, so if rates move in your favour before completion, you can often switch to the better offer without losing your place in the queue.
If you're already sitting on the SVR
It's not a trap you're stuck in — you can normally switch off the SVR onto a new deal at any time, with no early repayment charge, because there's no fixed term left to break. If this is you, the priority is simply speed: compare a product transfer against the open market and switch as soon as you find something better, since every month on the SVR is actively costing you more than it needs to.
Occasionally an SVR briefly works in your favour — for instance if you're only a few weeks from selling the property, or if a genuinely unusual rate environment puts the SVR temporarily close to fixed rates. These situations are rare. As a general rule, treat the SVR as a rate to actively avoid sitting on, not a fallback to rely on.