As millions of fixed-rate mortgage deals approach their end, experts are warning homeowners to prepare for a sharp rise in remortgaging activity this Autumn.

Forecasts from UK Finance suggest a 30 per cent increase in remortgaging in 2025, putting pressure on borrowers to make timely, informed decisions.

And with interest rates remaining unpredictable and lenders actively competing for business, one mortgage specialist says early planning could be the key to avoiding costly defaults onto standard variable rates.

Remortgaging might seem overwhelming, especially with recent shifts in interest rates and changing market dynamics. For many homeowners, it’s a key chance to reduce monthly costs, adjust loan terms to life changes, or even access extra funds for home improvements. Yet, navigating the market effectively requires more than just timing.

Timing and preparation are the most powerful tools borrowers have. With a growing number of fixed-rate deals ending this year, and forecasts predicting a 30 per cent surge in remortgaging throughout 2025, Autumn is shaping up to be a busy season. Those who plan early and stay informed will be well-positioned to secure the best deals and avoid common pitfalls.

Here, Sam shares his top five practical tips to help homeowners approach remortgaging confidently and strategically.

Start Early

“Many borrowers leave it too late to explore their options. Jumping into the remortgage market at the last minute often means stress and fewer competitive offers. UK Finance forecasts indicate external remortgaging will surge to £76 billion this year, a 30 per cent increase on 2024, signalling a busy autumn for lenders and buyers alike. Starting your search six months before your deal ends means you’ll avoid sliding onto your lender’s Standard Variable Rate, which is usually far higher.”

Lock Your Rate in Early

“Interest rates can move, so it’s wise to secure your new rate as soon as you can. The Bank of England reports a 12.8 per cent quarterly rise in gross mortgage advances, the highest since late 2022, indicating that lenders are actively competing for business at present. If rates drop after you’ve locked in, many brokers can still help you switch to a better deal, as long as you meet the lender’s conditions.”

Get the Prep Work Right

“Your credit score and paperwork matter more than ever. Even if your credit is in good shape, small improvements might open doors to better deals. Lenders remain cautious, with 45.2 per cent of recent advances going to borrowers with high loan-to-income ratios. Make sure your finances look solid: avoid new loans, big spending sprees or dipping into your overdraft in the weeks before you apply. Have all your current mortgage details and income paperwork ready to keep things moving smoothly.”

Look for Overpayment Flexibility

“Many remortgage products allow you to overpay up to 10 per cent annually without penalty. This can help reduce your mortgage balance faster, potentially moving you into more favourable loan-to-value bands. The Bank of England notes that the share of mortgages with LTVs above 90 per cent is at its highest since 2008, standing at 6.7 per cent. Using bonuses, savings or occasional extra payments can keep costs down in the long run, but check your lender’s rules carefully to avoid accidental fees.

Consider Your Future Plans

“Are you likely to move soon, or is stability more important? Short fixes, such as two or three years, offer flexibility if your circumstances might change. Longer fixes provide shelter from rising rates but can tie you into higher early repayment penalties. Remortgages for owner-occupiers now make up 21.3 per cent of all advances, while possession numbers remain relatively low, though rising slightly, up 11 per cent to a forecast 7,000 cases in 2025. Make sure to check whether your mortgage is portable, as this can save fees and hassle if you move home.

Sam concludes: “Remortgaging is about using the right timing, knowledge and preparation to make your money work harder for you. With today’s market conditions, a proactive approach is the smartest move anyone can make. With a bit of organisation and awareness, you can make Autumn 2025 the season you secure a smarter mortgage deal.”

*As a mortgage is secured against your home, it could be repossessed if you do not keep up the mortgage repayments. The Financial Conduct Authority does not regulate some forms of buy-to-let mortgages. All data and figures were correct at the time of writing, 16th September 2025