Interest rates are one of the biggest factors affecting landlord profitability. When they rise, mortgage payments increase, squeezing rental yields. When they fall, borrowing gets cheaper — but waiting for rate cuts can be a costly gamble.
In 2025, many landlords are asking the same question: Should I lock into a fixed-rate mortgage now, or wait in the hope that rates drop further?
At NetRent, we believe timing your remortgage correctly is critical. Here’s how rate changes directly affect your rental profits — and why securing a deal now may be the smarter move.
The Link Between Interest Rates and Rental Profits
Every 0.5% change in interest rates can make a big difference to your monthly cash flow. For example:
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A £200,000 buy-to-let mortgage at 5.5% costs around £917 per month.
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The same loan at 6% costs around £1,000 per month.
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That’s £1,000 extra per year just from a small increase.
For landlords with multiple properties, the effect multiplies. Rising mortgage payments eat directly into rental income, reducing net yield and in some cases wiping out profits altogether.
Fixed-Rate Mortgages: Certainty in an Uncertain Market
Fixed-rate mortgages give landlords stability. You know exactly what your repayments will be, regardless of future Bank of England decisions.
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2-year and 5-year fixed rates currently available provide landlords with much-needed certainty.
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Remortgaging onto a fixed deal now could protect you from future surprises.
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Even if rates do fall slightly in the future, the cost of waiting (higher monthly payments in the meantime) could outweigh any benefit.
The Risk of Waiting for Rate Cuts
Many landlords are tempted to wait, hoping that rates will drop. But here’s why that strategy is risky:
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Lenders price in expectations. By the time the Bank of England cuts rates, many mortgage products have already adjusted.
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SVRs are expensive. If your fixed deal ends and you don’t remortgage, you could automatically move onto your lender’s SVR — often several percentage points higher.
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Lost rental profits. Every month you pay a higher rate than necessary reduces your net income.
Waiting for the “perfect” rate often costs more than acting decisively.
Why Remortgaging Now Makes Sense
Remortgaging early gives you:
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Certainty of payments with a fixed rate
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Protection from volatility in case rates rise again
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Improved cash flow by avoiding SVR charges
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Flexibility to release equity for future investments
For many landlords, the peace of mind and financial stability from fixing now far outweigh the risks of waiting.
Key Takeaways for Landlords
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Even small interest rate changes significantly impact rental profits.
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Fixed-rate mortgages provide stability in an unpredictable market.
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Waiting for further rate cuts can backfire, costing you more in the long run.
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Acting early with a remortgage ensures you avoid expensive SVRs and secure competitive terms.
Protect Your Rental Profits Today
Don’t leave your rental income to chance. Locking in a fixed-rate mortgage now could save you thousands and give you certainty in 2025 and beyond.
At NetRent, we specialise in helping UK landlords secure competitive buy-to-let and remortgage deals. Our expert team can compare products across the market and guide you towards the right option for your portfolio.
Call us today on 01352 721300