The Complete Guide to Limited Company Buy-to-Let Mortgages in 2026
The Complete Guide to Limited Company Buy-to-Let Mortgages in 2026
Buying an investment property through a limited company has really taken off in the last few years. More and more landlords are switching from buying in their own names to using company structures instead — in fact, approximately 80% of new buy-to-let purchases in the UK are now made through limited companies. So why is this happening? Tax efficiency, plus the fact it gives you far more flexibility when managing and growing a portfolio.
Setting up a limited company to buy property can sound complicated at first, but it’s actually straightforward once you know how it works. Yes, there can be a bit more paperwork, and the rates are often slightly higher than if you bought in your personal name, but the long-term benefits usually far outweigh that additional effort. With the right setup, you can save money, stay organised, and build a much stronger investment position over time.
In this guide, I’m going to break down how to find the best limited company buy-to-let mortgage. I’ll discuss how the process works, what to look out for, and the common mistakes to avoid. Whether you’re just starting out or already have a few properties under your belt, by the end of this article, you should have a clear idea of how to get it right from day one.
What Is a Limited Company Buy-to-Let Mortgage?
To put it simply, a limited company buy-to-let mortgage is a mortgage taken out through a limited company instead of in your own name. The company buys and owns the property, and any rent or profit sits within that business rather than going straight to you personally. It’s a setup that gives investors more control over how their rental income is handled and how their portfolio is structured for the future.
The main difference comes down to how the profits are taxed. When you own property in your own name, rental income is taxed as personal income — which for higher-rate taxpayers means 40%, or 45% for additional-rate taxpayers. With a limited company, profits are taxed at Corporation Tax rates instead. For the 2025/26 and 2026/27 tax years, Corporation Tax is set at 19% for profits up to £50,000, rising to 25% for profits above £250,000, with marginal relief applied between those thresholds. That’s a potentially significant saving, particularly for landlords in the higher tax brackets.
Crucially, limited companies can also deduct 100% of mortgage interest as a business expense before calculating taxable profit. This is the single biggest advantage over personal ownership. Since Section 24 of the Finance Act was fully phased in by April 2020, individual landlords can no longer deduct mortgage interest from their rental income — they receive only a 20% tax credit on interest payments. For a higher-rate taxpayer, this means paying 40% tax on gross rental income but only getting 20% relief on the mortgage costs. Through a limited company, the full mortgage interest is deducted before any tax is calculated.
Personal Ownership vs Limited Company: Tax Comparison
| Factor | Personal Ownership | Limited Company (SPV) |
|---|---|---|
| Tax on Profits | Income Tax: 20% / 40% / 45% | Corporation Tax: 19–25% |
| Mortgage Interest | 20% tax credit only (Section 24) | 100% deductible as business expense |
| Stamp Duty Surcharge | 5% on additional properties | 5% on additional properties |
| Capital Gains Tax | 18% or 24% (£3,000 allowance) | Corporation Tax on gains (no CGT allowance) |
| Profit Extraction | Direct — taxed as personal income | Dividends (subject to dividend tax) or salary |
| Retained Profits | Taxed as personal income regardless | Can be retained at Corp Tax rate for reinvestment |
| Best Suited For | Basic-rate taxpayers with 1–2 properties | Higher-rate taxpayers and portfolio landlords |
Note: Tax rules are complex and subject to change. Corporation Tax rates shown are for 2025/26 and 2026/27. Always seek professional tax advice before making structural decisions. Quartico is not a tax adviser.
How Limited Company Buy-to-Let Mortgages Work
There are two main types of company structures you can use for property investment.
The first is a Special Purpose Vehicle (SPV). An SPV is a limited company set up purely to buy, hold, and manage property — and nothing else. It’s the structure most investors I work with use because it keeps things clean and simple from a lender’s point of view. Lenders require SPVs to be registered with specific SIC codes — typically 68100 (buying and selling of own real estate), 68209 (other letting and operating of own or leased real estate), or 68320 (management of real estate on a fee or contract basis).
The second option is a trading company, which might already exist and carry out other business activities — like a consultancy or construction firm. You can buy property through a trading company, but most lenders find it more complicated to assess because the finances are mixed in with other business income and expenses. That’s why SPVs tend to get better access to buy-to-let mortgage products and smoother approvals, and this is what we at Quartico tend to recommend when possible.
When you apply for a limited company buy-to-let mortgage, lenders will usually assess both the company’s financial position and the personal finances of its directors or shareholders. Most lenders require a maximum of four directors, and all directors must typically provide a personal guarantee on a joint and several basis. So even though the property sits in the company’s name, your own situation still plays a significant part in getting the deal approved.
Understanding Limited Company Mortgage Rates in 2026
When it comes to limited company buy-to-let mortgages, the first thing most investors notice is that the interest rates are slightly higher than those offered to individual landlords. This is normal — lenders view company borrowing as a different risk profile and the underwriting process is more detailed.
As of March 2026, the Bank of England base rate sits at 4.5%. Limited company BTL mortgage rates currently range from approximately 4.7% to 7.0%, depending on the lender, the loan-to-value ratio, the size of the loan, and the strength of your company’s financials. To give you a sense of what’s available right now:
| Product Type | Indicative Rate | Max LTV | Notes |
|---|---|---|---|
| 2-Year Fixed | 4.69–5.83% | 75% | Lower rates carry higher product fees (£2,000+) |
| 5-Year Fixed | 5.18–6.39% | 75% | Longer-term stability; lower fees on some products |
| Tracker / Variable | 5.5–7.0% | 75% | More flexibility; rate moves with base rate |
Indicative rates as of March 2026 based on publicly available lender data. Rates change frequently. Always confirm current rates with a broker before proceeding.
The premium over personal buy-to-let rates has narrowed in recent years and now typically sits at around 0.5–1.0%. Given the tax savings — particularly for higher-rate taxpayers — this premium is usually more than offset by the lower effective tax rate on profits. What I regularly advise clients to do is look at the complete picture, not just the headline rate. Lower rates often come with higher arrangement fees (sometimes £2,000–£5,000), while slightly higher rates might include more flexible terms or better long-term value.
How to Compare Limited Company Buy-to-Let Mortgages
Now that we’ve looked at what a limited company buy-to-let mortgage is and how rates work, let’s get into how to compare the different options and find the one that best fits your situation and investment goals.
Crucially, it’s important not to get caught up in the headline interest rate. A rate that looks great at first glance might not actually be the best deal once you consider everything else. For example, one lender currently offers a 2-year fixed at 2.59% — but with a 9.99% arrangement fee. On a £300,000 mortgage, that’s a £30,000 fee. What really matters is the overall cost, which includes the rate, arrangement fees, valuation costs, legal fees, and any exit charges.
Step 1: Identify specialist lenders. A lot of the big high-street banks don’t deal with limited company buy-to-let mortgages. This is a niche area, and the best products usually come from specialist lenders — names like The Mortgage Works, Kensington, Metro Bank, Leeds Building Society, and Family Building Society — that most people can only access through a broker.
Step 2: Calculate the total cost of borrowing. Some lenders advertise a lower rate but charge higher fees to make up for it. Using a buy-to-let mortgage calculator can help you see the true cost over the term of the loan so you can compare deals more accurately. Focus on what you’ll actually pay over the initial fixed period, including fees.
Step 3: Build a relationship with a good broker. A broker who understands your long-term plans can keep an eye on new products, renegotiate better rates down the line, and make sure each new purchase fits into your overall investment strategy. This is particularly important in the current environment where lenders are frequently withdrawing and repricing products at short notice.
At Quartico, we regularly work with trusted brokers that we can recommend to make this process completely seamless. They’ve got access to specialist lenders and exclusive deals that you simply won’t find by going directly to a bank. Once you’ve filled in a few basic details, we handle the rest — connecting you with the right people to secure the best possible deal for your company setup.
The 2026 Landscape: What’s Changed for Limited Company Landlords
The regulatory and tax environment for buy-to-let has shifted significantly over the past two years, and it’s worth understanding the current landscape before making structural decisions.
Stamp Duty surcharge increased to 5%. From the Autumn Budget 2024, the surcharge on additional property purchases (including those bought through limited companies) rose from 3% to 5%. This applies to all properties over £40,000 and is payable on the full purchase price. For a £200,000 property, the total SDLT including surcharge is now approximately £11,500.
Furnished Holiday Lettings (FHL) regime abolished. From April 2025, the FHL tax regime was removed, meaning short-term let income is now treated identically to standard rental income for individual landlords. For limited company landlords, this has less direct impact (since mortgage interest was already fully deductible), but it’s worth noting that the capital allowances previously available under FHL rules no longer apply to new expenditure.
Renters’ Rights Act now in force. The abolition of Section 21 no-fault evictions and the introduction of new tenant protections is pushing more individual landlords out of the market. In January 2025 alone, over 25,000 rental properties were listed for sale — a 50% increase year-on-year. This creates acquisition opportunities for professional investors purchasing through limited companies.
Corporation Tax rates confirmed for 2026/27. The rates remain unchanged: 19% for profits up to £50,000, 25% for profits above £250,000, with marginal relief between. For most small-to-medium portfolio landlords, the effective rate remains significantly lower than 40–45% personal income tax.
Short-term let registration scheme expected in 2026. A proposed national registration scheme for short-term lets in England is anticipated to go live in 2026. Limited company landlords operating serviced accommodation should factor this into their compliance planning.
Avoiding Common Pitfalls
Buying through a limited company can be a smart move, but there are a few traps that even experienced investors fall into when arranging their mortgages. Understanding these early on can make your investment journey much smoother.
Not planning for the bigger picture. Some investors focus purely on securing their first deal and don’t think about how their setup will work as they grow their portfolio. If you’re serious about expanding, it’s worth structuring things optimally from day one. This means using the right company setup (almost always an SPV with the correct SIC codes), keeping your finances clean and separate, and ensuring your articles of association don’t restrict property-related activities.
Underestimating the admin side. Limited company lending involves more paperwork than buying in your own name — company accounts, director details, business bank statements, and personal guarantees. Having everything organised and up to date makes the process far quicker and signals to lenders that you’re a serious, professional investor. While that may sound subjective, believe me — when dealing with people whose responsibility it is to process these applications every day, it is hugely helpful.
Chasing speed over suitability. It’s tempting to rush into the first product that gets approved, especially in a fast-moving market where you’re enthusiastic about an investment opportunity you’ve identified. But the cheapest or fastest option isn’t always the right one for your long-term goals. A slightly higher rate on a more flexible product might give you far better options later on — particularly when it comes to refinancing or porting.
Ignoring the cost of transferring existing properties. If you already own buy-to-let properties in your personal name, transferring them into a limited company effectively means selling the property to yourself. This triggers both Capital Gains Tax on any gain and Stamp Duty on the purchase by the company — including the 5% surcharge. For some landlords, the ongoing tax savings justify this cost, but for others it doesn’t stack up. Always model the numbers with a tax adviser before proceeding.
Going it alone. Trying to manage everything yourself — from company setup to mortgage sourcing — often leads to unnecessary delays and missed opportunities. Working with specialists who deal with limited company lending every day saves you time and ensures nothing slips through the cracks.
At Quartico, that’s exactly what we focus on. We bring all the right pieces together — from the company structure to the lending strategy — so you can invest confidently and keep your attention where it belongs: on growing your portfolio.
Why Use a Mortgage Broker
In my experience, it cannot be said often or strongly enough — if you are serious about building a property portfolio through a limited company, having a good mortgage broker on your side makes a significant difference. It’s not just about finding a deal; it’s about having someone who understands your strategy, knows the lenders that fit your setup, and can keep things moving quickly and efficiently from start to finish.
The biggest advantage of using a broker is access. Most of the best limited company buy-to-let mortgages aren’t available directly to the public. They come through specialist lenders who only work with brokers — lenders like The Mortgage Works, Kensington Mortgages, and Leeds Building Society, who have intimate knowledge of the SPV market and can offer products you simply won’t find on a comparison website.
Then there’s the time and hassle they save. Limited company applications can be paperwork-heavy — from company accounts to director guarantees — and a good broker will handle all of that for you. They’ll deal with the lender, chase updates, and smooth out any bumps along the way. I’ve had so many experiences with clients who reverted to using a broker after doing all of the legwork themselves on a previous deal, and they have almost always said they can’t believe they didn’t work with a broker sooner.
This is particularly important in the current market. In March 2026, several lenders have been withdrawing and repricing fixed-rate products at very short notice due to volatility in swap rates. A broker who monitors these changes daily can act fast to secure a deal before it’s pulled — something an individual investor simply can’t do.
At Quartico, we work closely with a network of trusted brokers who share our approach — people who know the market inside out and who we’d happily recommend to our own clients. They’re the ones who help turn what could be a stressful process into a simple, streamlined experience.
And the relationship doesn’t end once the mortgage is in place. A good broker will stay in touch, keeping an eye on rate changes, new products, and refinancing opportunities. That ongoing partnership means you’re never reacting to the market — you’re staying one step ahead of it.
Frequently Asked Questions
What are the tax advantages of using a limited company for buy-to-let?
The main benefit is how profits are taxed. If you own property personally, your rental income is taxed as personal income — which can be as high as 40% or 45% for some landlords. With a limited company, profits are taxed at Corporation Tax rates: 19% on profits up to £50,000, rising to 25% above £250,000 (2026/27 rates). You can also deduct 100% of mortgage interest and other operating costs as business expenses before calculating taxable profit — a major advantage that individual landlords lost under Section 24.
How does getting a mortgage through a limited company differ from buying personally?
The process is similar, but lenders take a deeper, more detailed look. They’ll assess both the company’s finances and the personal details of its directors or shareholders. It typically means more paperwork and, in some cases, slightly higher interest rates (currently around 0.5–1.0% above personal BTL rates). But for higher-rate taxpayers, the tax savings usually more than offset the higher borrowing cost.
What is a Special Purpose Vehicle (SPV), and do I need one?
An SPV is a limited company set up purely for holding property investments — nothing else. Most lenders prefer SPVs because they’re clean, simple, and easy to assess. The company must be registered with specific SIC codes (68100, 68209, or 68320). If your company does other business activities, it’s classed as a trading company, and many lenders won’t accept those for buy-to-let mortgages. For most investors, an SPV is the recommended route.
Will I need to give a personal guarantee?
Yes. Directors or major shareholders will almost always be asked to provide a personal guarantee on a joint and several basis. This means that if the company can’t meet its mortgage repayments, you could personally be held responsible. This is standard practice across virtually all limited company BTL lenders, but it’s important to understand what that means for you before signing anything.
Can I transfer existing properties into a limited company?
Yes, but it’s a significant decision. Transferring effectively means selling the property as an individual and purchasing it through the company. This can trigger Capital Gains Tax on any gain you’ve made, plus Stamp Duty (including the 5% surcharge) on the purchase by the company. For some landlords — particularly those with substantial equity and high personal tax rates — the ongoing savings justify the upfront cost. For others, it doesn’t stack up. Professional tax advice is essential before proceeding.
What happens if the company is sold or dissolved?
If the company is sold, the mortgage will usually need to be repaid or transferred, depending on the lender’s terms. If the company is dissolved while still holding property, the lender could repossess the property to recover what’s owed. It’s always best to get legal and financial advice before making major changes to your company structure.
Is a limited company buy-to-let worth it in 2026?
For higher-rate taxpayers and landlords planning to build a portfolio of multiple properties, a limited company structure typically offers meaningful advantages — particularly through full mortgage interest deductibility and lower Corporation Tax rates. The trend is clear: 80% of new BTL purchases are now through limited companies. However, for basic-rate taxpayers with one or two properties who plan to draw all profits as income, the additional costs and complexity may not justify the benefits. The right answer depends entirely on your personal circumstances.
Final Thoughts
You’re hopefully now much clearer on why setting up and financing property through a limited company can be a smart way to build long-term wealth. It gives you more control, more flexibility, and is often significantly better in terms of taxation — all of which make a big difference as your portfolio grows.
My one main piece of advice is to approach it strategically from the start. Set up your company properly with the right SIC codes and structure, work with the right people, and think beyond the first investment. A good structure and a strong broker relationship can save you a lot of money and stress down the line.
At Quartico, that’s exactly what we help clients do. We bring together the right experts, the right lenders, and the right support to make investing through a limited company as smooth and rewarding as possible. You focus on building your portfolio — we’ll help iron out the creases along the way. Get in touch to discuss your next investment.