Commercial Loans
& Buy-to-Let (BTL)

A commercial loan is designed to help businesses access funding for a wide range of needs such as working capital, equipment purchases, or expansion. A buy-to-let (BTL) mortgage, on the other hand, is specifically tailored for landlords purchasing residential property to rent out.

While both products involve borrowing, commercial loans are typically unsecured or secured against business assets, whereas BTL mortgages are secured against the rental property. Choosing between them depends on whether you need funding for business operations or for building a property investment portfolio.

Eligibility for a commercial loan usually depends on your trading history, income, and credit profile. Businesses of all sizes — from sole traders to limited companies — can apply, with lenders assessing affordability and risk. Buy-to-let mortgages are available to individuals and companies who want to purchase residential property to rent out.

Lenders look at factors such as rental yield, property value, and the applicant’s creditworthiness. Both types of lending require evidence of your ability to meet repayments, but BTL mortgages tend to focus more on rental income projections. Some lenders now offer limited company buy-to-let mortgages, which can be more tax-efficient for landlords with multiple properties.

Buy-to-let mortgages cover residential properties intended for rental purposes. Common examples include houses, flats, HMOs (Houses in Multiple Occupation), and student accommodation. Some lenders will also finance holiday lets, though criteria may be stricter. Commercial properties such as offices, warehouses, or shops cannot be financed with a BTL mortgage; instead, these fall under commercial mortgage products.

The type of property you purchase can affect the deposit required, the rental yield expectations, and the lender’s interest rate. Always check lender criteria before applying. In the UK, student rental properties often achieve some of the highest rental yields, attracting specialist buy-to-let lenders.

Loan amounts vary depending on the type of finance and your circumstances. Commercial loans can range from £10,000 up to several million, depending on turnover, collateral, and purpose. Buy-to-let mortgages usually allow borrowing of up to 75% of the property’s value (Loan-to-Value ratio).

The amount you can borrow for BTL is also influenced by expected rental income, which must usually exceed the mortgage payments by 125%–145% to meet lender stress tests. Larger deposits and stronger financials can increase borrowing limits and reduce interest rates.

Commercial loans can sometimes be unsecured, requiring no deposit, but secured loans often need collateral such as property, vehicles, or machinery. Buy-to-let mortgages typically require a larger deposit than residential mortgages, usually between 20% and 40% of the property’s value. Higher-risk properties, such as HMOs or holiday lets, may demand even bigger deposits.

A larger upfront investment often unlocks better interest rates and loan terms, while smaller deposits usually limit borrowing options or result in higher costs. First-time landlords usually need bigger deposits for buy-to-let mortgages, as lenders view them as higher risk.

Interest rates on commercial loans vary widely, often ranging from 4% to 15% depending on whether the loan is secured or unsecured, the borrower’s creditworthiness, and the term length. Buy-to-let mortgage rates are usually lower, ranging from 3% to 7% depending on LTV and rental income strength.

Fees may include arrangement charges, broker fees, valuation costs, and legal expenses. Some lenders also apply early repayment or exit charges. Comparing products is essential, as small changes in rate or fees can have a big impact on long-term affordability. Arrangement fees on buy-to-let mortgages are often calculated as a percentage of the loan, typically 1%–2%, rather than a flat fee.

Repayment terms depend on the product and lender. Commercial loans typically run from 1 to 15 years, with some stretching to 25 years if secured against property. Buy-to-let mortgages usually mirror residential mortgage terms, commonly 5 to 35 years. Many landlords opt for interest-only repayment structures, keeping monthly payments lower and relying on property sale or remortgaging to repay the capital.

Commercial loans, however, are more likely to require monthly capital plus interest repayments, unless structured differently. Flexibility is key, and terms should align with your financial strategy. Many UK landlords choose interest-only BTL mortgages to maximise rental yield, despite paying more in interest over the long term.

Yes — while high street banks may decline applications, specialist lenders often work with borrowers who have poor credit or short trading history. For commercial loans, lenders may place more emphasis on the strength of your business plan and available security. For buy-to-let mortgages, lenders often look closely at rental income potential rather than just personal credit history.

While interest rates may be higher, these products still provide valuable funding routes for entrepreneurs, landlords, and investors who fall outside standard criteria. Some specialist buy-to-let lenders don’t require a minimum personal income, provided the rental yield comfortably covers repayments.

Commercial loans are flexible and can be used for a wide variety of business purposes, including purchasing stock, funding expansion, investing in new equipment, or covering short-term working capital needs. Buy-to-let mortgages, on the other hand, are strictly for financing residential property intended for rental.

Landlords use them to buy single lets, HMOs, or flats to generate income, while investors may grow portfolios over time. The key distinction is that commercial loan funds can go directly into business operations, while BTL mortgages are tied to property investment. Both products provide growth opportunities but are used in very different ways.

Documentation requirements vary between commercial loans and buy-to-let mortgages. For commercial lending, expect to provide business accounts, cash flow forecasts, recent bank statements, and details of any assets offered as security. For buy-to-let mortgages, lenders typically require proof of income, deposit evidence, property valuation, and projected rental yield.

In both cases, ID, proof of address, and credit checks will be carried out. Having all paperwork prepared in advance helps speed up the process and increases your chances of approval. Some buy-to-let lenders will accept applications from landlords with as few as 12 months’ property management experience.