What are the current best buy-to-let mortgage rates for a limited company with a 75% LTV on a new build property in the North West, and should I fix for 2 or 5 years given current interest rate predictions?
Quick Answer
Limited company BTL rates for a 75% LTV new build range from 5.0-6.5% (2-year) to 5.5-6.0% (5-year). Choose short or long term based on rate predictions.
## Navigating Limited Company Buy-to-Let Mortgages in December 2025
Investing in a limited company structure for buy-to-let properties, particularly new builds in growth areas like the North West, offers distinct advantages. Here’s a breakdown of current mortgage rates and considerations for 75% loan-to-value (LTV) new builds.
* **Typical 2-year fixed rates:** You're looking at rates generally between **5.0-6.5%**. These rates might offer a slightly lower initial payment, but expose you to refinancing sooner.
* **Typical 5-year fixed rates:** These typically sit in the range of **5.5-6.0%**. While often marginally higher than their 2-year counterparts, they provide stability and certainty for a longer period.
* **Stress Test Considerations:** All buy-to-let (BTL) mortgages are subject to a stress test, usually 125% rental coverage at a notional rate of 5.5%. Your rental income needs to comfortably cover this to qualify, regardless of the fixed rate you choose. For example, a £200,000 property with a 75% LTV loan of £150,000 would need £900 per month in rent to pass a 125% stress test at 5.5% (5.5% x £150,000 / 12 months x 125%).
* **Limited Company Specifics:** Lenders view limited companies differently from individual landlords. While Section 24 no longer allows individual landlords to deduct mortgage interest from rental income, limited companies can still treat interest as a business expense before calculating Corporation Tax. This means corporation tax at 19% (for profits under £50k) or 25% (for profits over £250k) is applied post-interest deduction.
* **New Build Considerations:** Some lenders might have specific criteria or slight rate adjustments for new build properties due to perceived risks or benefits, though this is often minor compared to the LTV and company status.
## Weighing Up 2-Year Versus 5-Year Fixes: What to Watch Out For
The decision between a 2-year and 5-year fixed rate mortgage isn't just about the initial interest payment; it’s about your strategy and risk appetite given the current economic climate.
* **Early Repayment Charges (ERCs):** Almost all fixed-rate products come with ERCs if you exit the mortgage early. A 5-year fix locks you in for longer, so ensure your strategy aligns with this commitment.
* **Interest Rate Predictions:** With the Bank of England base rate currently at 4.75%, opting for a 2-year fix means you’ll be re-mortgaging sooner, exposing you to the prevailing rates in 2027. If you believe rates will fall significantly, this could be beneficial. However, if they rise, you could face higher payments. A 5-year fix offers protection against rising rates but means you won't benefit if rates drop. Many investors consider this a gamble on professional economic forecasts.
* **Market Volatility:** The property market, especially for new builds, can have periods of volatility. A 5-year fixed rate provides greater financial stability against unexpected market shifts in terms of your borrowing costs.
* **Lender Fees and Arrangement Costs:** Don't forget to factor in product fees, which can range from 1-3% of the loan amount, and valuation fees. These add to your initial outlay and need to be considered in your overall return on investment calculations.
## Investor Rule of Thumb
Never choose a mortgage solely on the headline interest rate; calculate the total cost of borrowing, including fees, and ensure the loan's terms align with your long-term investment strategy and risk tolerance.
## What This Means For You
Selecting the right mortgage for your limited company buy-to-let can significantly impact your profitability. Most investors don’t lose money because they choose the wrong property, they lose money because they misunderstand the financing. If you want to dive deeper into how specific mortgage products impact your cash flow and returns, this is exactly what we unpick in detail inside Property Legacy Education.
Steven's Take
The limited company structure is potent for tax efficiency, especially with Section 24 impacting individual landlords. However, don't confuse that benefit with relaxed lending criteria. Lenders are still strict, particularly with stress tests at 125% coverage on a 5.5% notional rate. New builds often come with a premium, but also a tenant demand that can justify it. For the '2 or 5-year fix' debate, think about the Bank of England base rate at 4.75%. If you think it will drop substantially in the next two years, a shorter fix might pay off. If you prefer certainty and protection from potential rises, the five-year option is safer, even if it costs a fraction more upfront. My advice: always account for unexpected hikes.
What You Can Do Next
Contact a specialist buy-to-let mortgage broker experienced with limited company lending to explore the actual rates available in December 2025 for new builds in the North West. Ensure they understand your full investment strategy.
Calculate your rental income against the typical 125% rental coverage at 5.5% notional interest rate stress test. Ensure your projected rent comfortably exceeds this to qualify.
Perform a cash flow analysis for both a 2-year and 5-year fixed rate option. Include all fees (product, valuation) and account for Corporation Tax implications on rental profit.
Review your personal risk appetite. If you're comfortable with potential interest rate fluctuations for a quicker re-mortgage, a 2-year fix might suit. If stability is paramount, opt for a 5-year fix.
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