Buy-to-Let Mortgage for a Limited Company

What is a buy-to-let mortgage for a limited company?

A buy-to-let mortgage for a limited company is a loan to a company, usually a special purpose vehicle (SPV) set up only to hold property, to buy or refinance rental property. The company owns the property and the directors usually give personal guarantees. Lenders mainly size the loan on the rent, typically requiring it to cover 125% of the mortgage interest at a stressed rate. For how Enness Global arranges these loans, see limited company buy-to-let mortgages.

Company ownership is now the usual route for new landlords. Around three-quarters of new buy-to-let purchases are made through limited companies, and a record 66,587 buy-to-let companies were set up in 2025, according to Hamptons. Investors use them to manage several properties, separate personal and business assets, and structure borrowing for long-term portfolio growth.

How do limited company buy-to-let mortgages work?

The company is the borrower, not the individual. The property sits on the company’s balance sheet, and the directors usually give personal guarantees to support the loan.

Lenders mainly assess the rent the property is expected to earn. Most require it to cover 125% of the interest at a stressed rate, often 5.5% on fixes shorter than five years, in line with guidance from the Prudential Regulation Authority. On £1,500 a month of rent, that supports a loan of about £262,000. The same rent tested at 145%, common for higher-rate taxpayers borrowing personally, supports about £226,000. Five-year fixes are often tested nearer their actual rate, which can support more. Lenders also look at the directors’ wider position, particularly for larger or more complex portfolios.

Interest-only structures are common, helping to maximise cash flow and maintain flexibility, especially for investors building or managing multiple properties within a portfolio. See interest-only mortgages.

Is a limited company better than owning buy-to-let personally?

For many higher-rate taxpayers it is, mainly because of how mortgage interest is taxed; for basic-rate taxpayers with one or two properties, personal ownership can still be simpler and cheaper. A landlord who owns property personally cannot deduct mortgage interest from rental profit and receives only a 20% tax credit instead, under Section 24. A company deducts the interest in full and pays corporation tax at 19% on profits up to £50,000 and 25% above £250,000.

The gap widens from 6 April 2027, when rental profit owned personally will be taxed at separate property rates of 22%, 42% and 47% in England, Wales and Northern Ireland (ICAEW). Company profit is taxed again when it is paid out as dividends, so the right answer depends on how much you earn, how much you borrow and whether you plan to reinvest. Hamptons notes that landlords who are basic-rate taxpayers may still be better off owning personally. Take tax advice before choosing a structure.

Limited company structures are often used by landlords building or managing multiple properties, where flexibility and long-term planning matter more than headline rates. Personal ownership can be more straightforward for those with fewer properties or simpler income.

Can you get a limited company buy-to-let mortgage with complex income?

Yes, having a complex income structure doesn’t necessarily prevent you from securing a limited company buy-to-let mortgage. In many cases, lenders are accustomed to working with investors whose income goes beyond a standard salary.

This can include multiple income streams, such as dividends, business profits, or retained earnings, as well as international income where earnings are received across different jurisdictions or currencies. For directors living abroad, see expat mortgages.

Alongside rental income, some lenders will also consider the broader financial position of the borrower, including assets, liquidity, and overall net worth. For more established investors, this can provide additional flexibility, particularly where the property forms part of a wider portfolio strategy.

For higher-value or more complex cases, structuring becomes key, ensuring the way income, assets, and borrowing are presented aligns with how lenders assess risk.

What are limited company buy-to-let mortgage rates?

Limited company rates are usually a little above the equivalent personal buy-to-let rate. Across all buy-to-let mortgages, Moneyfacts put the average two-year fix at 5.32% and the five-year fix at 5.70% on 8 September 2026. Rates were rising through the autumn, and each case is priced on its own merits, subject to the lender’s assessment.

Pricing is rarely one-size-fits-all. Lenders assess a combination of factors, including:

• Loan-to-value Lower borrowing against the property’s value generally attracts more competitive rates.
• Portfolio size and experience Established landlords with multiple properties are often viewed more favourably.
• Property type Standard residential property tends to price better than houses in multiple occupation, holiday lets or other specialist property.
• Borrower profile Income structure, assets and wider financial position can all influence terms.

While rates are an important consideration, for many investors the focus is on how the finance is structured, particularly where flexibility, scalability, and long-term portfolio strategy are involved.

What are the eligibility criteria?

Requirements vary by lender, property and structure, but most limited company buy-to-let lenders expect:

• An SPV structure, set up only for property investment, usually registered with property SIC codes such as 68100 (buying and selling own real estate) or 68209 (letting and operating own real estate).
• A deposit of typically 20% to 35%, depending on the property type and risk profile.
• Rent that passes the lender’s test, usually 125% of the interest at a stressed rate.
• Personal guarantees from the directors.

For more complex cases, lenders may also consider the wider financial position of the directors, including existing property holdings, income streams, and overall leverage.

What is an SPV and why do lenders prefer it?

An SPV (special purpose vehicle) is a limited company set up specifically to buy, hold, and manage property. It doesn’t carry out other trading activities; its sole purpose is property investment.

Lenders typically prefer SPVs because they offer a clean, transparent structure. With no unrelated business activity, it’s easier to assess risk, track income, and understand how the property portfolio is performing. This clarity often makes underwriting more straightforward compared to trading companies with mixed revenue streams.

The SIC codes the company is registered with tell lenders what it does. While this may seem administrative, it plays an important role in how lenders assess the application and determine eligibility. For taking money out of a property company, see releasing profits from an SPV.

Can you move an existing buy-to-let into a limited company?

Yes, but it is treated as a sale to the company at market value, so it can trigger capital gains tax for you and stamp duty for the company. Your existing mortgage also has to be repaid and replaced with a company mortgage.

• Stamp duty A company pays the 5% surcharge on residential property, and a flat 17% can apply to a home over £500,000 unless a relief such as the one for property rental businesses applies (GOV.UK). Hamptons puts the average stamp duty on a transfer at about £28,000.
• Capital gains tax Charged on the gain since you bought, at 18% or 24%. Incorporation relief can defer it, but only where the letting is a genuine business transferred as a whole.
• Refinancing The lender needs to understand how ownership has changed. In one case, Enness Global refinanced a buy-to-let portfolio that had moved from personal names into a partnership and then a company while the old mortgages stayed in the clients’ names.

Hamptons found that 53% of properties placed into buy-to-let companies in 2025 were existing homes transferred in, but that new purchases made up the majority in 2026 (Hamptons, September 2026). For most landlords, these costs are why the decision needs tax advice first.

How do portfolio landlords use limited company structures?

For portfolio landlords, limited company structures are often less about a single purchase and more about how multiple properties are managed and financed over time.

Properties can be held within one SPV or across multiple entities, depending on the strategy. This allows investors to organise assets more efficiently, separate risk, and plan acquisitions or disposals with greater control.

From a lending perspective, some providers look beyond a single property and assess the portfolio as a whole, including total rental income, existing debt, and overall leverage. This can create more flexibility, particularly where individual properties perform differently, but the portfolio remains strong.

For investors looking to scale, a limited company structure can support ongoing acquisitions, refinancing opportunities, and a more strategic approach to leverage, rather than treating each property in isolation.

How should a limited company buy-to-let mortgage be structured?

How a limited company buy-to-let mortgage is structured can have a bigger impact than the headline rate, particularly for investors managing multiple properties or planning to scale.

• Interest-only or repayment Interest-only is common in buy-to-let, helping to maximise cash flow and keep monthly costs lower. Repayment suits investors who want to reduce debt over time.
• Cross-collateralisation Some lenders take security across several properties rather than assessing each one alone. This can increase borrowing capacity where equity is uneven across a portfolio.
• Wider assets and liquidity For more complex cases, lenders may consider cash reserves or investments alongside the rent, which can support more tailored terms.
• Long-term strategy The structure should reflect the investor’s wider aims, whether that is building a portfolio, refinancing over time or keeping room for future opportunities.

For higher-value or more complex portfolios, this is where a more considered, tailored approach becomes important, ensuring the structure supports both current needs and longer-term plans.

What are the advantages and disadvantages?

Using a limited company for buy-to-let investment can offer greater flexibility and control, but it isn’t always the right fit for every investor. The benefits often become more relevant as portfolios grow or structures become more complex.

Advantages

• Full relief on mortgage interest, with profits taxed at corporation tax rates rather than personal income tax rates (take professional advice).
• Often more borrowing on the same rent, because of the 125% rent test.
• Scalability: a company can make it easier to buy and manage several properties over time.
• Separation of assets: holding property in a company keeps it apart from personal assets.

Disadvantages

• Higher mortgage rates: limited company buy-to-let mortgages are often priced slightly above personal equivalents.
• Tax on taking profit out: dividends paid to the directors are taxed again.
• Cost of moving existing property: transferring a personally owned buy-to-let can trigger stamp duty and capital gains tax.
• Setup and administration: company accounts, filings and compliance add cost.
• Fewer lenders: not every lender offers limited company products, and criteria can be more specific.

The first conversation with an Enness Global adviser covers the property, the company structure and which lenders suit the portfolio. Call +44 (0)203 758 9393, email info@enness.co.uk or contact us. See also Limited company buy-to-let mortgages and Buy-to-let mortgages.