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Top 10 Lenders for £300,000 Buy-to-Let Business Finance in 2026
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Top 10 Lenders for £300,000 Buy-to-Let Business Finance at a Glance
| Rank | Lender | Best for | Published loan range | Loan rate |
|---|---|---|---|---|
| 1 | One Stop Business Finance | Landlords needing flexible buy-to-let finance from a specialist provider | £100,000 to £3,000,000 | interest 1.6% to 3% monthly |
| 2 | Inhale Capital | Property investors wanting rapid buy-to-let funding at competitive rates | £0 to £2,000,000 | interest 1.05% to 1.3% monthly |
| 3 | Brightstar | Landlords preferring annual-rate buy-to-let mortgages from £50,000 | From £50,000 | interest 5% to 12% annually |
| 4 | HSBC Bank | Included for comparison; established landlords with strong credit | £1,000 to £300,000 | interest 8.6% to 11.3% annually |
| 5 | Virgin Money | Established landlords with at least 12 months of trading history | £30,000 to £10,000,000 | interest 4.5% to 10.5% annually |
| 6 | NatWest Bank | Portfolio landlords able to meet higher turnover thresholds | £500 to £10,000,000 | interest 4.5% to 10.5% annually |
| 7 | Barclays | Landlords seeking bank-backed buy-to-let with a broad loan range | £1,000 to £25,000,000 | interest 8.5% to 14.9% annually |
| 8 | Admiral leasing | Included for comparison; investors exploring wider market options | From £1,000 | interest 5.5% to 13.5% annually |
| 9 | Shireassetfinance | Smaller-scale landlords needing buy-to-let for varied property types | £5,000 to £750,000 | interest 4.5% to 12% monthly |
| 10 | MT Finance | Portfolio landlords needing larger buy-to-let at low monthly rates | £50,000 to £10,000,000 | interest 0.89% to 1.05% monthly |
A buy-to-let commercial mortgage is a loan secured against a property you plan to rent out rather than live in. It allows landlords and property investors to purchase investment properties while keeping cash free for other projects. The lender assesses the rental income potential alongside your financial profile. For a £300,000 investment property, the right mortgage structure determines both your monthly cash flow and long-term portfolio returns.
Comparing buy-to-let mortgage lenders goes beyond the headline interest rate. Loan-to-value ratios typically range from 60% to 75%, so your deposit requirement varies significantly between providers. Lenders differ on whether they accept SPV limited companies, first-time landlords, or multi-property portfolios. Arrangement fees, valuation costs, and early repayment charges shift the total borrowing cost. Rental income stress tests and interest coverage ratios also vary, directly affecting your affordability on a £300,000 purchase.
Important note:
Funding Agent
Published loan rangeFrom £10,000 to up to £1,000,000
Rate typeInterest from 6.8% annually
Why it is included:It is included because many business owners need to compare several finance routes before choosing where to apply.
Funding Agent can help businesses compare suitable options across a lender panel, especially when eligibility depends on turnover, sector, trading history, credit strength and available documents.
Best use case: When the borrower wants to avoid applying to one lender at a time.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Why it stands out
- Useful when a business wants to compare lender fit rather than guess which lender to apply to first.
- Can help position the application around the funding purpose, trading profile and available documents.
- Works well as a conversion route for readers who are unsure whether a direct lender will approve a larger unsecured facility.
Need to know
- Funding Agent is a broker, not a lender.
- The lender, not Funding Agent, sets the final rate, term, fees and approval decision.
- The best match may be unsecured, secured, revolving credit, invoice finance or another product depending on the case.
Expert take
Funding Agent is a useful honourable mention for business owners who want to compare lender options before submitting a full application. A larger unsecured loan is not always approved by the first lender a business finds, so understanding lender fit early can reduce wasted time and avoid unnecessary declines.
One Stop Business Finance
Published loan range£100,000 to £3,000,000
Rate typeinterest 1.6% to 3% monthly
Overview: Property investors funding a buy-to-let through a limited company often find monthly interest structures more manageable than annual rates. One Stop Business Finance lends from £100,000 to £3,000,000 with monthly interest between 1.6% and 3%, suiting landlords who want clear short-term cost visibility. Expect to provide suitable security and evidence of rental income.
Best next step: Compare buy-to-let rates for your SPV or personal name.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Monthly interest for cash-flow planning
- Lends to limited company landlords
- Facilities from £100k to £3m
Need to know
- Requires suitable security
- Personal guarantee may apply
- Rental income evidence needed
Expert take
A secured funding specialist comfortable with larger property-backed deals. For a £300,000 buy-to-let, the monthly rate structure helps landlords manage costs alongside rental income, and limited company borrowers are within their usual scope.
Source:https://www.osbf.co.uk/
Inhale Capital
Published loan range£0 to £2,000,000
Rate typeinterest 1.05% to 1.3% monthly
Overview: A buy-to-let purchase can slip away while mainstream lenders spend weeks underwriting. Inhale Capital funds in as little as 24 hours, making it a practical choice for landlords who need to move quickly on an investment property. Monthly rates start at 1.05%, with facilities available up to £2,000,000. Property-backed security is required, and exit-risk checks will apply.
Best next step: See if 24-hour funding works for your purchase.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Funding in 24 hours
- Rates from 1.05% monthly
- Facilities up to £2m
Need to know
- Property security required
- Exit-risk checks apply
- Short-term bridging structure
Expert take
A fast-moving bridging lender built for time-sensitive property deals. Landlords chasing a £300,000 buy-to-let benefit from rapid turnaround and competitive monthly pricing, though this suits bridging rather than a long-term mortgage.
Brightstar
Published loan rangeFrom £50,000
Rate typeinterest 5% to 12% annually
Overview: Not every buy-to-let lender will consider smaller portfolios or less conventional property types. Brightstar starts from £50,000 and works with annual rates between 5% and 12%, giving landlords room to finance an investment without needing a sprawling portfolio. Funding can complete within 24 hours. Property-backed security is standard, and valuation costs should be budgeted for.
Best next step: Check eligibility for your property type and structure.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Starts from just £50,000
- Annual interest from 5%
- Funding within 24 hours
Need to know
- Property security required
- Valuation costs apply
- Higher fees possible
Expert take
A bridging and short-term lender with a low minimum entry point. Landlords with smaller portfolios or unusual properties can still access a £300,000 facility, with annual rates that make cost comparison against mainstream lenders straightforward.
HSBC Bank
Published loan range£1,000 to £300,000
Rate typeinterest 8.6% to 11.3% annually
Overview: Mainstream banks remain a starting point for many landlords, and HSBC's commercial mortgage product covers facilities from £1,000 to £300,000 with annual rates between 8.6% and 11.3%. Bank underwriting tends to be thorough, so expect detailed affordability checks and a longer timeline than specialist lenders. Full financial disclosure is standard for a secured commercial facility of this nature.
Best next step: Explore HSBC commercial mortgage terms for landlords.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Established high-street lender
- Commercial mortgage product
- Annual fixed-rate structure
Need to know
- Slower bank underwriting
- Strong trading history needed
- Detailed affordability checks
Expert take
A high-street bank with broad commercial mortgage coverage. For a £300,000 buy-to-let, the annual rate structure offers predictable costs, but landlords should prepare for stricter underwriting and longer processing than alternative lenders.
Source:https://www.business.hsbc.uk/en-gb/finance-and-borrowing
Virgin Money
Published loan range£30,000 to £10,000,000
Rate typeinterest 4.5% to 10.5% annually
Overview: Landlords financing a buy-to-let through a limited company need a lender comfortable with SPV structures. Virgin Money's commercial mortgage spans £30,000 to £10,000,000 with annual rates from 4.5% to 10.5%, and their product range includes options suited to property investment businesses. Funding can complete within 24 hours once approved. Bank-style underwriting still applies, so trading history and affordability evidence matter.
Best next step: Compare Virgin Money's SPV buy-to-let options.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- SPV and limited company friendly
- Rates from 4.5% annually
- Large loan range up to £10m
Need to know
- Bank underwriting standards apply
- Trading history may be checked
- Valuation and legal costs apply
Expert take
A recognisable lender with a commercial mortgage range that accommodates both personal and SPV landlords. The broad loan band and competitive starting rate make it a sensible comparison point for a £300,000 buy-to-let investment.
Source:https://uk.virginmoney.com/business/business-borrowing/
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NatWest Bank
Published loan range£500 to £10,000,000
Rate typeinterest 4.5% to 10.5% annually
Overview: Portfolio landlords and property companies scaling their holdings tend to match well with NatWest's commercial mortgage terms. Covering £500 to £10,000,000 at annual rates between 4.5% and 10.5%, the bank lends to both individuals and limited companies. Underwriting is thorough, and a personal guarantee may be required depending on the borrowing structure.
Best next step: Review NatWest's landlord mortgage criteria.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Lends to individuals and SPVs
- Facilities from £500 to £10m
- Annual rates from 4.5%
Need to know
- Thorough underwriting process
- Personal guarantee possible
- Longer approval timeline
Expert take
A major clearing bank with deep property lending experience. Portfolio landlords and limited companies funding a £300,000 buy-to-let get access to competitive annual pricing, though the underwriting bar is higher than with specialist lenders.
Source:https://www.natwest.com/business/loans-and-finance.html
Barclays
Published loan range£1,000 to £25,000,000
Rate typeinterest 8.5% to 14.9% annually
Overview: Buy-to-let investors weighing mainstream bank options will find Barclays' business mortgage covers a wide band from £1,000 to £25,000,000, with annual rates between 8.5% and 14.9%. The annual rate structure suits landlords who prefer predictable, long-term costs over monthly interest calculations. Expect standard bank underwriting with full affordability assessment.
Best next step: See Barclays business mortgage rates for landlords.
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Wide lending range to £25m
- Annual fixed-rate clarity
- Established banking institution
Need to know
- Rates start at 8.5% annually
- Full affordability assessment
- Security and valuation required
Expert take
A household-name bank whose business mortgage product scales well beyond a single buy-to-let, suiting landlords with growth ambitions. The annual rate model brings predictability, though headline rates sit above some competitors.
Admiral leasing
Published loan rangeFrom £1,000
Rate typeinterest 5.5% to 13.5% annually
Overview: When a buy-to-let opportunity demands funding in hours rather than weeks, Admiral leasing reports turnaround as fast as four hours. Their commercial mortgage product starts from £1,000 with annual rates between 5.5% and 13.5%, covering both purchases and refinances against property security. Landlords should expect the usual valuation and legal costs associated with secured property lending.
Best next step: Check four-hour funding terms for your buy-to-let.
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Funding in as little as 4 hours
- Annual rates from 5.5%
- Purchases and refinances covered
Need to know
- Property security required
- Valuation costs apply
- Limited public product detail
Expert take
A lender geared for speed who can move on a property-backed deal within a single working day. For a £300,000 buy-to-let, the rapid turnaround helps landlords secure properties in competitive situations where timing is everything.
Shireassetfinance
Published loan range£5,000 to £750,000
Rate typeinterest 4.5% to 12% monthly
Overview: Landlords with mixed income streams, including trading revenue, may find Shireassetfinance's commercial mortgage approach more flexible than traditional buy-to-let lenders. Facilities range from £5,000 to £750,000 with monthly rates between 4.5% and 12%, accommodating a property investment comfortably. Property security is required, and they also offer asset finance, which can help landlords furnishing or refurbishing a rental.
Best next step: Explore flexible terms for mixed-income landlords.
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Considers trading revenue too
- Monthly rates from 4.5%
- Also offers asset finance
Need to know
- Property security required
- Monthly rate structure
- Full eligibility check needed
Expert take
A lender that looks beyond rental cover alone, factoring in broader business revenue. For a £300,000 buy-to-let, this flexibility helps landlords whose income does not fit the standard rental-calculation mould used by high-street banks.
MT Finance
Published loan range£50,000 to £10,000,000
Rate typeinterest 0.89% to 1.05% monthly
Overview: Bridging finance remains a common route for buy-to-let investors, and MT Finance lends from £50,000 to £10,000,000 at monthly rates between 0.89% and 1.05%. The competitive monthly pricing keeps short-term holding costs lower than many peers. Funding typically completes within 24 hours. This is bridging, not a long-term mortgage, so an exit strategy is essential.
Best next step: Compare MT Finance bridging rates for landlords.
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Rates from 0.89% monthly
- Funding within 24 hours
- Facilities up to £10m
Need to know
- Bridging, not long-term
- Exit strategy required
- Property valuation needed
Expert take
A bridging specialist with some of the lowest monthly rates in the short-term market. Landlords funding a £300,000 buy-to-let get cost-efficient bridge finance, provided they have a clear repayment or refinance exit mapped out.
Source:https://www.mt-finance.com/
Commercial Mortgage Calculator
How Buy-to-Let Commercial Mortgages Work for Landlords and SPV Limited Companies
A buy-to-let commercial mortgage at the £300,000 level is a loan secured against an investment property you intend to rent out. Unlike regulated residential mortgages, these facilities are designed for business purposes, suiting both individual landlords and special purpose vehicle (SPV) limited companies.
If you borrow through an SPV, the lender assesses the property's rental income potential rather than your personal income. This structure can offer tax efficiency for higher-rate taxpayers. Individual landlords may access a wider pool of high-street bank lenders, though underwriting still centres on rental cover.
Most lenders on this list require a personal guarantee, including One Stop Business Finance, Inhale Capital, Brightstar, Virgin Money, NatWest, and HSBC. This means you remain personally liable even if your property holding company faces difficulties. Loan terms vary significantly, from short-term bridging facilities lasting 1 to 18 months through to traditional mortgages running 20 or 25 years.
Loan-to-Value Ratios and Deposit Requirements for a £300,000 Buy-to-Let Investment
For a £300,000 buy-to-let property, your deposit depends on the maximum loan-to-value (LTV) ratio each lender offers. Most specialist lenders cap LTV between 70% and 75%. One Stop Business Finance and Inhale Capital both publish a maximum LTV of 75%, meaning a deposit of £75,000 on a £300,000 purchase. MT Finance caps LTV at 70%, requiring a £90,000 deposit.
Brightstar stands out by offering up to 100% LTV in certain circumstances. This could mean no cash deposit, though additional security such as a charge on another property is typically required to bridge the gap. High-street banks do not always publish LTV figures for their commercial mortgage products, so confirmed LTV data on this list comes primarily from specialist and bridging lenders.
Your deposit size also affects the interest rate. Borrowers with 30% to 40% equity often access lower-rate tiers. A strong rental yield can strengthen your application even at higher LTV levels.
Interest Rates and Repayment Terms Across £300,000 Buy-to-Let Lenders
Buy-to-let lenders on this list split into two broad camps: those quoting monthly rates and those quoting annual rates. Monthly-rate lenders typically offer short-term bridging or bridge-to-let facilities. MT Finance publishes rates from 0.89% to 1.05% per month, while Inhale Capital quotes 1.05% to 1.3% per month and One Stop Business Finance sits at 1.6% to 3% per month. These suit quick purchases, refurbishments, or funding before arranging a longer-term mortgage.
Annual-rate lenders include the high-street banks. Virgin Money and NatWest both publish rates from 4.5% to 10.5% per year, with terms extending to 20 and 25 years respectively. HSBC quotes 8.6% to 11.3% per year over terms of 1 to 10 years. Brightstar offers annual rates from 5% to 12% per year.
When comparing costs, check whether the rate is fixed or variable, and whether the lender charges arrangement, valuation, or exit fees. Short-term monthly-rate products may accumulate higher total interest if rolled over repeatedly. A longer-term annual-rate product often suits a straightforward buy-to-let hold strategy.
What Buy-to-Let Lenders Look for in Landlord and SPV Limited Company Applications
Lenders assess a £300,000 buy-to-let application on three main pillars: the property, the rental income, and you as the borrower.
For the property, lenders want a standard construction residential unit in reasonable condition. Flats above commercial premises, HMOs, or properties with short leases may face restricted lending. A formal valuation is always required, paid for by you.
Rental income is the primary repayment source. Most lenders require projected rent to cover 125% to 145% of the mortgage interest payment. If the property does not yet have a tenant, lenders may rely on an estimated market rent from the valuer.
On the borrower side, personal guarantees are near-universal across this list. Virgin Money states a minimum business age of one year. NatWest publishes a minimum turnover requirement of £300,000, which may exclude smaller landlords unless they apply through a different product. Several specialist lenders confirm a £0 minimum turnover and no minimum business age, making them accessible to newly formed SPVs.
