The 6‑month rule: why smart landlords plan remortgages early

Over the past year, market conditions have shifted, bringing more competitive buy-to-let products to the table. Fixed rates remain a popular choice for landlords, but as your fixed term nears its end, the big question is: when is the right time to remortgage? Move too early and you risk early repayment charges; leave it too late and you could end up on your lender’s standard variable rate (SVR) – which can be painfully expensive. Timing really is everything.

Most lenders’ mortgage offers are valid for up to 6 months.* This means a proactive broker will aim to have a suitable application in place 3–6 months before your fixed rate ends, based on your preferred lender’s terms.

This approach gives you flexibility:

• If rates fall, your broker can switch you to the lower rate before completion.
• If rates rise, you’ve already locked in a competitive deal, potentially making a significant saving over the next term.**

In fact, brokers can often update your application multiple times until around 3 weeks before completion, ensuring you always have the best option available. Switching to a different lender altogether is possible, but it may involve extra time and costs.

The benefits of acting early

Locking in a rate early isn’t just about peace of mind – it’s about protecting your bottom line. With interest rates still unpredictable, securing a deal ahead of time means you’re less exposed to sudden market changes.

While no one has a crystal ball, a responsible broker will always aim to “control the controllables”:

• Lock in a favourable rate early
• Stay in regular contact to review options
• Advise if it’s too soon to remortgage

If you have properties in your portfolio on fixed rates coming to an end, now is the time to review them. Don’t risk paying more than you need to – start planning ahead.

*Some lenders only offer 3-month validity depending on their funding sources.
**In rare cases, lenders reliant on wholesale markets may withdraw mortgage offers.