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Top 10 Lenders to Secure £500,000 Buy-to-Let Business Finance in 2026
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Compare 10 Lenders for £500,000 Buy-to-Let Business Finance
| Rank | Lender | Best for | Published loan range | Loan rate |
|---|---|---|---|---|
| 1 | One Stop Business Finance | SPV investors needing £500,000 monthly-rate limited company BTL finance | £100,000 to £3,000,000 | interest 1.6% to 3% monthly |
| 2 | Inhale Capital | Portfolio landlords wanting low monthly-rate BTL from £500,000 upwards | £0 to £2,000,000 | interest 1.05% to 1.3% monthly |
| 3 | Brightstar | Limited company landlords preferring specialist annual-rate BTL products | From £50,000 | interest 5% to 12% annually |
| 4 | NatWest Bank | Established SPV portfolios suited to bank-level annual-rate mortgages | £500 to £10,000,000 | interest 4.5% to 10.5% annually |
| 5 | Virgin Money | Businesses with 12+ months trading history refinancing rental property | £30,000 to £10,000,000 | interest 4.5% to 10.5% annually |
| 6 | HSBC Bank | Included for comparison; loan ceiling falls short of £500,000 | £1,000 to £300,000 | interest 8.6% to 11.3% annually |
| 7 | Barclays | Large-scale portfolio investors comparing business mortgage bank rates | £1,000 to £25,000,000 | interest 8.5% to 14.9% annually |
| 8 | Shire Leasing | Landlords exploring monthly-rate BTL commercial mortgage options | £5,000 to £750,000 | interest 4% to 11% monthly |
| 9 | Shireassetfinance | Investors comparing fast monthly BTL products up to £750,000 | £5,000 to £750,000 | interest 4.5% to 12% monthly |
| 10 | MT Finance | SPV property investors prioritising low monthly rates at £500,000 | £50,000 to £10,000,000 | interest 0.89% to 1.05% monthly |
Buy-to-let business finance is a commercial mortgage designed for property investors who hold residential investment properties within a limited company or special purpose vehicle (SPV). This structure has become increasingly popular since Section 24 restricted mortgage interest relief for individual landlords, making company-held portfolios more tax-efficient. For investors seeking £500,000, this type of lending supports single property purchases, refinancing existing rentals, or expanding a portfolio held under a corporate structure.
Choosing the right lender goes beyond comparing headline rates. For limited company buy-to-let finance, investors should examine whether the lender understands SPV structures, the loan-to-value ratio on offer, and any personal guarantee requirements. Rate type is another critical factor — monthly interest products from specialist lenders differ significantly from the annual rate structures offered by high-street banks. The published loan range also signals whether a lender routinely works with £500,000 facilities or treats the amount as an outlier.
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: Limited company landlords who need more than a vanilla term loan can access revolving credit and secured bridging through One Stop Business Finance. The lender works with SPVs that hold residential investment property and can structure facilities around rental income rather than conventional salary multiples. Expect higher monthly interest costs than annual-rate BTL products.
Best next step: Explore SPV-friendly secured facilities
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Structures lending around rental income profiles
- Works flexibly with SPV holding companies
- Revolving credit option reduces repeat applications
Need to know
- Monthly rates are higher than annual-rate BTL deals
- Strong trading history and security required
- Legal and valuation costs likely to apply
Expert take
A secured lender blending revolving credit with bridging, suited to portfolio landlords using limited companies. Underwriting prioritises rental coverage over personal income, giving SPV borrowers a route where salary-based assessments fall short.
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: Speed matters when a below-market-value BTL purchase needs completing before the chain collapses. Inhale Capital funds within 24 hours for property-backed deals, making it a practical choice for auction purchases and distressed sales where a conventional commercial mortgage would take too long. The short-term model means you need a clear exit plan.
Best next step: Get a decision within 24 hours
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Funds auction and distressed purchase deals fast
- 24-hour turnaround on property-backed applications
- Accepts SPV and limited company borrowing structures
Need to know
- Monthly interest model with short-term duration
- Exit plan essential for repayment strategy
- Valuation and legal fees apply to facility
Expert take
A speed-focused bridging lender built for investors who need committed funds in days. Limited company landlords chasing auction wins benefit from rapid underwriting and a process designed to move at deal speed.
Brightstar
Published loan rangeFrom £50,000
Rate typeinterest 5% to 12% annually
Overview: Annual interest rates starting around 5% position Brightstar closer to mainstream BTL mortgage pricing than most bridging lenders. The firm lends from £50,000 upward and structures facilities for limited companies and SPVs acquiring residential investment property. Underwriting still moves faster than a high-street bank, though rates climb for higher-risk cases.
Best next step: Compare annual-rate BTL bridging options
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Annual rates closer to mainstream BTL pricing
- Works with SPV and limited company borrowers
- Faster underwriting than traditional bank processes
Need to know
- Rates rise toward 12% for higher-risk cases
- Property-backed security is a requirement
- Higher fees than standard BTL mortgage products
Expert take
A property-backed lender whose annual-rate model narrows the gap between bridging and mainstream BTL pricing. Investors needing faster completion than banks offer but wanting to avoid punishing monthly interest find this a pragmatic middle ground.
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NatWest Bank
Published loan range£500 to £10,000,000
Rate typeinterest 4.5% to 10.5% annually
Overview: Through its commercial mortgage range, NatWest lends to limited companies and SPVs holding residential investment property, with annual rates that typically undercut alternative lenders. The bank's established buy-to-let proposition covers portfolio landlords and single-property investors alike. Expect fuller underwriting, including rental stress tests and director guarantees, in exchange for lower long-term borrowing costs.
Best next step: Speak to a broker about NatWest BTL rates
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Annual rates usually lower than alternative lenders
- Established BTL track record with portfolio landlords
- Covers SPV and limited company borrowing structures
Need to know
- Full underwriting includes rental stress testing
- Director guarantees often required for SPV loans
- Slower process than specialist or bridging lenders
Expert take
A mainstream bank with a mature limited company buy-to-let mortgage range. Landlords meeting rental cover requirements secure low annual rates that sustain portfolio cash flow, though thorough underwriting means longer timelines.
Source:https://www.natwest.com/business/loans-and-finance.html
Virgin Money
Published loan range£30,000 to £10,000,000
Rate typeinterest 4.5% to 10.5% annually
Overview: Commercial mortgages from Virgin Money give limited company landlords access to competitive annual rates on par with other high-street names, covering single lets through to multi-property portfolios. The bank lends to SPVs and trading limited companies where rental income can service the debt. Underwriting standards are thorough, so prepare for detailed affordability and stress-test evidence.
Best next step: Check Virgin Money BTL eligibility criteria
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Competitive annual rates for limited company BTL
- Covers single lets and portfolio-level lending
- Recognised high-street lender with BTL expertise
Need to know
- Detailed affordability evidence and stress tests required
- Underwriting timeline longer than specialist lenders
- Director personal guarantees may be requested
Expert take
A high-street lender well established in limited company BTL. Portfolio landlords satisfying affordability checks lock in annual rates that compare favourably with the wider market, making this a solid long-term funding choice.
Source:https://uk.virginmoney.com/business/business-borrowing/
HSBC Bank
Published loan range£1,000 to £300,000
Rate typeinterest 8.6% to 11.3% annually
Overview: HSBC structures commercial mortgages for limited companies and SPVs acquiring smaller residential investment properties, with annual rates that reflect high-street pricing. The bank's BTL underwriting follows standard rental cover calculations and director assessments. Landlords targeting properties that fall within HSBC's lending thresholds will find the long-term cost competitive, though the maximum facility size restricts larger purchases.
Best next step: Review HSBC commercial mortgage terms
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- High-street annual rates for BTL borrowing
- Standard rental cover assessment for SPVs
- Established limited company mortgage process
Need to know
- Maximum loan of £300,000 limits larger purchases
- Full bank underwriting with director assessment
- Slower completion than specialist BTL lenders
Expert take
A high-street bank whose commercial mortgage product suits smaller BTL acquisitions. Limited company investors whose property purchases fit the lending ceiling access competitive annual-rate pricing without needing specialist alternatives.
Source:https://www.business.hsbc.uk/en-gb/finance-and-borrowing
Barclays
Published loan range£1,000 to £25,000,000
Rate typeinterest 8.5% to 14.9% annually
Overview: Barclays' business mortgage range serves limited company landlords and SPVs with annual rates that, while higher than some high-street peers, reflect the bank's willingness to consider a wider spread of property investment cases. The lending ceiling reaches well into seven figures, giving portfolio landlords room to scale. Underwriting remains thorough, with rental income stress testing at the core of every assessment.
Best next step: Discuss Barclays business mortgage options
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Large lending ceiling suits portfolio expansion
- Considers a wide spread of BTL cases
- Established SPV and limited company lending
Need to know
- Annual rates start higher than some competitors
- Full rental stress testing on every application
- Bank timeline slower than specialist providers
Expert take
A mainstream bank whose business mortgage arm lends at significant scale to limited company landlords. The ceiling on borrowing and case-by-case underwriting give portfolio investors flexibility that narrower BTL lenders may not match.
Shire Leasing
Published loan range£5,000 to £750,000
Rate typeinterest 4% to 11% monthly
Overview: Shire Leasing considers commercial mortgage applications where rental income coverage, rather than a flawless credit file, drives the lending decision. The lender works with limited companies and SPVs holding residential investment property, offering facilities that reach up to £750,000. Monthly interest pricing means the overall cost sits above annual-rate BTL mortgages, suiting shorter-term holds or refinance plays.
Best next step: Enquire about rental-income-led underwriting
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Rental income focus over credit score alone
- Works with SPV and limited company structures
- Facilities available up to £750,000
Need to know
- Monthly interest costs more than annual-rate BTL
- Security against residential investment property required
- Not a mainstream high-street lending option
Expert take
A specialist commercial mortgage provider whose underwriting leans on rental coverage ahead of credit history. Limited company landlords with strong tenancy income but unconventional profiles find an entry point high-street banks often decline.
Shireassetfinance
Published loan range£5,000 to £750,000
Rate typeinterest 4.5% to 12% monthly
Overview: A funding decision within four hours sets Shireassetfinance apart for landlords who cannot wait weeks for a bank response. The lender structures commercial mortgages for limited companies and SPVs acquiring residential investment property, with facilities available up to £750,000. Monthly interest applies, so the product suits bridging scenarios, refurbishment exits, and short-term portfolio moves where speed outweighs headline cost.
Best next step: Get a decision in as little as four hours
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Funding decisions in as little as four hours
- Structures around SPV and limited company needs
- Facilities up to £750,000 for BTL purchases
Need to know
- Monthly interest model raises overall borrowing cost
- Best suited to short-term or bridging scenarios
- Security against the investment property required
Expert take
A rapid-response commercial mortgage provider where decision speed is the defining feature. Limited company investors facing auction deadlines benefit from the four-hour turnaround, making this practical when speed overrides all other considerations.
MT Finance
Published loan range£50,000 to £10,000,000
Rate typeinterest 0.89% to 1.05% monthly
Overview: Monthly rates from 0.89% give MT Finance a cost edge in the bridging space, useful for limited company landlords who need short-term BTL funding before refinancing onto a cheaper annual-rate product. The lender works with SPVs and portfolio investors on facilities from £50,000 into the millions. Completion moves at bridging speed, so a clear exit strategy is non-negotiable.
Best next step: Explore low-rate bridging for BTL purchases
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Competitive monthly rates from 0.89 percent
- Lends from £50,000 into the millions
- Works with SPV and portfolio landlord structures
Need to know
- Short-term bridging requires a clear exit plan
- Monthly rates still above annual BTL mortgage costs
- Property valuation and legal costs apply
Expert take
A competitively priced bridging lender whose low monthly rates make short-term BTL funding more palatable. Limited company landlords who buy, refurbish and refinance find this pricing works well as a bridge to long-term mortgage completion.
Source:https://www.mt-finance.com/
Commercial Mortgage Calculator
Tax benefits of a limited company buy-to-let for a £500,000 investment
Holding a £500,000 buy-to-let property inside a limited company or SPV unlocks full mortgage interest relief, something individual landlords lost under Section 24. This is a primary driver behind the rise in limited company buy-to-let applications.
The benefit grows with the loan size. On a £500,000 facility, annual interest could range from £22,500 at 4.5% to over £52,500 at 10.5% annually, based on rates published by high-street lenders such as NatWest and Virgin Money. A limited company can deduct every pound of that interest from rental profits before corporation tax.
Lenders offering commercial mortgages for SPVs include Barclays (rates from 8.5% to 14.9% annually) and Brightstar (5% to 12% annually). Term lengths reach up to 25 years with NatWest and Barclays, giving portfolio landlords room to manage cash flow.
Loan-to-value ratios on £500,000 buy-to-let commercial mortgages
The LTV a lender offers determines how much deposit you need. On a £500,000 property, the difference between a 70% and 100% LTV is £150,000 in upfront capital.
| Lender | Maximum LTV | Deposit on £500k property |
|---|---|---|
| Brightstar | 100% | £0 |
| One Stop Business Finance | 75% | £125,000 |
| Inhale Capital | 75% | £125,000 |
| MT Finance | 70% | £150,000 |
Brightstar stands out with LTVs up to 100%, meaning a portfolio landlord could acquire a £500,000 property without a cash deposit, provided other security or cross-collateralisation is available. Most specialist lenders cap LTV between 70% and 75% for limited company buy-to-let deals. Higher LTVs often come with a rate premium, so investors should weigh the deposit saving against the interest cost.
Fixed-rate versus tracker products for a £500,000 buy-to-let portfolio
Choosing between a fixed or tracker rate on £500,000 of borrowing has a material impact. A half-percentage-point rate swing changes annual interest by £2,500 on a facility of this size.
Lenders publishing fixed-style rates include Brightstar at 5% to 12% annually and NatWest and Virgin Money both at 4.5% to 10.5% annually. Specialist short-term lenders such as One Stop Business Finance and Inhale Capital quote monthly rates (1.6% to 3% and 1.05% to 1.3% per month respectively), which suit bridging or refurbishment strategies rather than long-term holding.
For a standard buy-to-let hold, fixed rates offer payment certainty across the term, which helps when modelling net yield. Tracker products can start cheaper but expose the landlord to base rate movements. Portfolio landlords with multiple properties often split between fixed and floating to balance risk.
Maximising rental yield on a £500,000 property held within an SPV
Rental yield is the relationship between gross rent and property value, but net yield is what matters after mortgage costs. On a £500,000 buy-to-let, a landlord targeting a 6% gross yield needs £30,000 annual rent. If the mortgage costs £25,000 a year at 5% annually, the net yield before other expenses sits at just 1%.
This is why rate selection is critical. Lenders such as NatWest and Virgin Money publish annual rates starting at 4.5%, which on a £500,000 interest-only loan would cost £22,500 per year. At the upper end, Barclays rates reach 14.9% annually, pushing annual interest to £74,500 and likely wiping out rental profit entirely.
Longer terms (up to 25 years from NatWest and Barclays) keep monthly costs manageable on a capital-repayment basis. Investors should also factor in lender arrangement fees, valuation costs, and the potential need for a personal guarantee, which most lenders on this list require.
