Tracking Mortgage Fixed-Rate End Dates

A fixed-rate end date is the single most predictable, most expensive date on a landlord's calendar, and it is also the one most often missed. Miss it and your mortgage does not stop working: it simply rolls onto your lender's standard variable rate (SVR), usually several percentage points higher, from the day after your fix ends. Track it properly and a remortgage becomes a planned event with weeks of lead time, rather than a scramble triggered by a payment that suddenly jumps.

This guide covers what landing on SVR actually costs, how far ahead to start the remortgage process, and how to build a reminder system that survives a growing portfolio rather than a single sticky note on a noticeboard.

The cost of landing on SVR

When a fixed deal ends without a new one lined up, most lenders move the mortgage onto their SVR automatically. There is no grace period and no warning beyond what the lender sent when you first took the mortgage out, so if you have not acted, the higher rate applies from the very next payment.

The scale of the difference depends on the lender and the market at the time, but SVRs are consistently well above the fixed rates on offer, often by several percentage points. On an interest-only buy-to-let loan, every percentage point of extra rate is pure additional cost with nothing paid off the balance, so the gap compounds quickly. A landlord with a £200,000 interest-only mortgage who spends three months on SVR before finally arranging a new deal has paid three months of materially higher interest for no benefit at all, money that a slightly earlier phone call or online application would have kept in their pocket.

The damage is not only financial. Landing on SVR can also affect a rental cover calculation if you later apply for further borrowing, since some lenders assess affordability against the rate you are currently paying, not the rate you expect to move to. A property that comfortably passed rental cover on a 4% fix can look tighter on a rate several points higher, which matters if you are trying to refinance or borrow against the property again soon after.

None of this is unusual or unfair. Lenders price SVR to be uncompetitive on purpose, because it is designed as a default fallback, not a product anyone is meant to choose deliberately. The lesson is simply that the fallback exists and it is expensive, so avoiding it is worth building a habit around.

Lead times: when to start

Most lenders let you agree a new deal well before your current one actually ends, commonly from about six months out, and sometimes earlier. That lead time exists so you are never forced to choose between rushing an application and accepting a period on SVR, provided you actually use it.

A sensible working rhythm is to start reviewing options around four to six months before the end date: checking whether a product transfer with your existing lender looks competitive, getting a rough sense of the wider market, and gathering the paperwork a lender will ask for, such as recent rent statements and details of your wider portfolio if you have one. That leaves enough time to switch course if your first choice falls through, a valuation comes back lower than expected, or you decide a full remortgage suits you better than a same-lender product transfer. Our buy-to-let remortgage guide walks through that comparison, along with what documents to have ready.

The lead time matters more, not less, as a portfolio grows. Portfolio applications generally take longer to process than a single straightforward remortgage, because the lender is reviewing your whole book of properties rather than just the one being refinanced. Our portfolio landlord rules guide sets out what changes once you are classed as a portfolio landlord, including the extra information most lenders will ask for. A landlord juggling several fixed-rate end dates across different lenders, staggered a few months apart, has far less room for error than one with a single mortgage, simply because there are more dates to track and more chances for one to slip through unnoticed.

If your fixed rate has already ended and you are currently on SVR, do not wait for the "right" moment to fix that either. The remortgage or product transfer process still applies, and every week spent deciding is a week paid at the higher rate. Our guide on what to do once a fixed rate ends covers the immediate steps.

Building a reminder system that works

The practical failure point is rarely a lack of understanding, it is simply forgetting the date exists among everything else a landlord has to manage. A few habits close that gap:

• Write the end date down the day you complete the mortgage, not when you remember to check later. Your mortgage offer document states it clearly.
• Set more than one reminder, spaced out, for example at six months, three months and one month before the end date, rather than a single alert that is easy to dismiss or miss entirely.
• Keep the date next to the mortgage details it belongs to, not in a separate calendar disconnected from the lender, rate, balance and rental figures you will need when you actually act on it.
• Review the list at the start of each quarter, even if nothing appears due soon, so a date that was months away does not suddenly become urgent without warning.
• Treat every property the same way, since it is usually the smaller or less-visited property in a portfolio that gets forgotten, not the one you think about most often.

A single mortgage is easy enough to hold in your head. The problem grows with every additional property, particularly once fixed-rate end dates are staggered across different years and different lenders, each with their own notification habits (or lack of them). At that point, a personal reminder system usually needs to become a proper register rather than a memory exercise, which is exactly the shift most landlords make once they are managing more than two or three mortgages.

How Property HQ helps

Property HQ logs the fixed-rate end date, lender, rate and balance for every mortgage in your portfolio in one place, and sends reminders well ahead of each renewal, so a date arriving in six months' time is visible today rather than something you rediscover when a payment changes.

Disclaimer

This guide is general information for UK landlords, not financial or mortgage advice. Lending criteria and lead times vary by lender and change over time - check with your lender or a qualified mortgage broker for your situation.