When your fixed rate or tracker deal comes to an end, your mortgage doesn't just stop. By default it rolls onto your lender's Standard Variable Rate, almost always called the SVR. Most borrowers never plan to be on SVR, they just drift onto it when their deal ends. The problem is that SVR is almost always the most expensive rate the lender offers, and staying on it costs people thousands a year they didn't need to spend.
What SVR actually is
Every UK mortgage lender sets its own Standard Variable Rate, a default interest rate that mortgages fall onto when no other deal is in place. It's the lender's headline 'untied' rate, and it applies to anyone who isn't currently on a fixed, tracker, discount or other promotional product.
Lenders set their SVR at their own discretion. The Bank of England base rate influences it (when base rate rises, SVR usually rises too), but there's no direct formula. Lenders can move SVR up or down whenever they like, by however much they choose, with reasonable notice.
Why SVR is almost always more expensive
Compare typical UK SVRs in mid-2026 against fixed-rate deals being offered to new borrowers and the gap is usually substantial:
On a £200,000 mortgage, that 2-3% gap between SVR and a competitive remortgage deal costs roughly £200-£500 a month. Over a year, that's £2,400-£6,000. Over five years on SVR vs five years on competitive fixes, it can easily be £15,000-£25,000 in extra interest. You can compare the monthly cost of each rate with the mortgage repayment calculator.
- SVR: typically 7.5%-9% across the major lenders.
- Best 2-year fix: typically 4.5%-5.5%.
- Best 5-year fix: typically 4.3%-5.2%.
- Tracker mortgages: usually base rate + 0.5%-1.5%.
Why so many people get stuck on SVR
Most people don't choose SVR. They drift onto it. The most common pattern looks like this:
- Your 2-year fix ends and you don't act in time.
- The lender writes to you (often months in advance), but the letter gets ignored or filed.
- On the day the fix ends, your mortgage automatically switches to SVR.
- Your monthly payment jumps by hundreds of pounds, at which point most people finally notice.
When SVR (briefly) makes sense
There are a few narrow situations where being on SVR is actually fine, but they're rare:
For everyone else, which is almost everyone, SVR is a temporary, expensive default that should be escaped as fast as possible.
- You're about to sell. If you're selling within a few months and don't want to take on Early Repayment Charges from a new fixed deal, SVR keeps you flexible.
- Your balance is very small. On a mortgage with say £15,000 remaining, the difference between SVR and a competitive fix is small in absolute pounds, and the arrangement fees on a new deal might wipe out the savings.
- You're going to overpay aggressively. SVR usually has no Early Repayment Charges, so you can chuck lump sums at it without penalty.
How to escape SVR
Two routes, both fairly straightforward:
Either is better than sitting on SVR. The remortgage route usually finds a better rate (different lenders compete), but a product transfer is faster (less paperwork, no full reaffordability check).
- Remortgage to a new lender. Apply for a new mortgage with a different lender, who pays off your old mortgage. This is a full new application, affordability check, credit check, conveyancing, and usually completes in 6-8 weeks.
- Product transfer with your existing lender. Stay with your current lender but switch onto one of their current deals. Usually quicker (a few weeks) and often doesn't require a full affordability check. Less choice though.
How early can you act?
You can typically secure a new mortgage deal 3-6 months before your current one ends. The new lender holds the rate for you, so if rates fall in between you can sometimes switch to the better deal; if rates rise, you've locked in.
Start the conversation with a broker at least 4 months before your fix ends. That gives you time to: shop the market, get a Decision in Principle, complete the paperwork, and have everything ready to switch on the day your fix ends, so you never touch SVR at all.
SVR vs revert rate vs follow-on rate
You might see different terms in your mortgage offer:
All three mean the same thing in practice: the default rate you fall onto when your deal expires. SVR is the most common label.
- Standard Variable Rate (SVR), the lender's default rate, set by them.
- Revert rate, the rate you 'revert' to. Usually the SVR.
- Follow-on rate, what your mortgage 'follows on' to. Usually the SVR.
SVR isn't a deal you choose, it's a default you fall into. And it's usually expensive. The simplest way to never pay it is to start your remortgage conversation 4-6 months before your fix ends. Debbie at DS Financial tracks the deal expiry dates of every client she's set up and reaches out before SVR ever becomes an issue. If you'd like that level of proactive support, even a quick chat costs nothing.
General information, not financial advice. Your home may be repossessed if you do not keep up repayments on your mortgage.
Sources: MoneyHelper, Mortgage types, FCA, Mortgages, Bank of England, Bank rate.
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