Last Updated
Top 10 Lenders for £800,000 Buy-to-Let Business Finance in 2026
.png)
Top 10 lenders for £800,000 buy-to-let business finance
| Rank | Lender | Best for | Published loan range | Loan rate |
|---|---|---|---|---|
| 1 | One Stop Business Finance | Portfolio landlords needing high-value buy-to-let finance up to £3m | £100,000 to £3,000,000 | interest 1.6% to 3% monthly |
| 2 | Inhale Capital | Property investors needing fast buy-to-let bridging at competitive rates | £0 to £2,000,000 | interest 1.05% to 1.3% monthly |
| 3 | Brightstar | Landlords wanting flexible buy-to-let terms with annual interest pricing | From £50,000 | interest 5% to 12% annually |
| 4 | NatWest Bank | Established landlords comparing high-street buy-to-let mortgage options | £500 to £10,000,000 | interest 4.5% to 10.5% annually |
| 5 | Virgin Money | Experienced portfolio landlords with larger residential investment requirements | £30,000 to £10,000,000 | interest 4.5% to 10.5% annually |
| 6 | Barclays | High-value landlords needing buy-to-let mortgages at scale | £1,000 to £25,000,000 | interest 8.5% to 14.9% annually |
| 7 | Offa | Landlords comparing specialist buy-to-let lenders for larger loans | £80,000 to £2,500,000 | interest 5.9% to 7.5% annually |
| 8 | Together Money | Portfolio landlords with diverse buy-to-let property requirements | £50,000 to £25,000,000 | interest 0.55% to 1.5% monthly |
| 9 | Admiral leasing | Landlords exploring commercial mortgage options for buy-to-let property | From £1,000 | interest 5.5% to 13.5% annually |
| 10 | MT Finance | Property investors seeking short-term buy-to-let bridging solutions | £50,000 to £10,000,000 | interest 0.89% to 1.05% monthly |
A buy-to-let commercial mortgage is a loan secured against residential investment property, structured so rental income covers the monthly repayments. It suits landlords and property investors who want to grow their portfolio without locking up all their working capital in a single purchase. At £800,000, this type of finance can unlock higher-value properties in stronger rental markets, often delivering better yields than smaller buy-to-let units.
Comparing buy-to-let lenders means looking beyond headline rates. Loan-to-value ratios determine your deposit requirement, which directly shapes your cash position. Rate structures also differ — some lenders price monthly, which suits bridging and short-term holds, while annual rates favour longer portfolio strategies. Rental cover calculations, property type restrictions and portfolio limits vary widely between providers. At this borrowing level, tiered pricing and lender stress tests can shift the true cost of finance considerably.
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: Monthly interest from 1.6% makes this lender worth comparing for bridging-style buy-to-let finance on residential investments. Loan sizes from £100,000 to £3,000,000 accommodate both single properties and multi-unit portfolios. Funds typically release within five working days of approval. The facility requires property security, so valuation and legal costs apply.
Best next step: Compare buy-to-let rates and terms here.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Monthly rates from 1.6% for bridging BTL
- Loans up to £3m for portfolio deals
- Funding within five working days
Need to know
- Property security is always required
- Valuation and legal costs apply
- Personal guarantee may be needed
Expert take
A flexible secured lender comfortable with property-backed deals. Landlords funding an £800,000 buy-to-let purchase benefit from competitive monthly pricing that suits short-term bridging before refinancing onto a term mortgage.
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: Funding can land within 24 hours, making this one of the quicker routes to completing a buy-to-let purchase at the £800,000 level. The lender operates exclusively in the property-backed space, lending up to £2,000,000 against residential investment assets. Monthly interest runs from 1.05%. Expect valuation costs and exit-risk checks as standard.
Best next step: See how fast you can complete.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Funding in as little as 24 hours
- Monthly rates from just 1.05%
- Lends up to £2m on residential BTL
Need to know
- Property-backed lending only
- Valuation and exit checks apply
- Short-term bridging product structure
Expert take
A speed-focused property lender that suits developers and landlords needing to move quickly. An £800,000 buy-to-let purchase fits comfortably within their lending appetite, and the 24-hour turnaround helps investors secure deals before competitors.
Brightstar
Published loan rangeFrom £50,000
Rate typeinterest 5% to 12% annually
Overview: Annual interest from 5% positions Brightstar closer to mainstream mortgage pricing, which suits landlords planning a longer-term hold at the £800,000 buy-to-let level. Loans start at £50,000 with no stated upper limit, giving room for portfolio-scale borrowing. Funding can complete in 24 hours. Property security is required throughout.
Best next step: Compare annual BTL rates from 5%.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Annual rates from 5% for BTL
- Loans available from £50,000 upwards
- 24-hour completion possible on bridging
Need to know
- Property security always required
- Higher fees possible on short-term deals
- Valuation costs apply before offer
Expert take
A property finance specialist bridging the gap between high-street banks and pure bridging lenders. For an £800,000 buy-to-let, their annual-rate structure keeps servicing costs predictable while the 24-hour timeline helps investors move at pace.
.png)
NatWest Bank
Published loan range£500 to £10,000,000
Rate typeinterest 4.5% to 10.5% annually
Overview: As a high-street bank with a commercial mortgage product, NatWest brings institutional-grade lending to buy-to-let investors. Loans run from £500 to £10,000,000 with annual rates between 4.5% and 10.5%. The product suits landlords who value brand stability and a regulated lending environment. Expect fuller underwriting and longer processing than specialist lenders.
Best next step: Check NatWest commercial mortgage terms.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Annual rates from 4.5% on BTL
- Loans available to £10,000,000
- Regulated high-street bank lending
Need to know
- Longer underwriting than specialist lenders
- Strong trading history often required
- Personal guarantee may apply
Expert take
A mainstream bank whose commercial mortgage product extends to residential investment. Landlords seeking an £800,000 buy-to-let at competitive annual rates find a familiar, regulated process and institutional-grade lending terms worth the longer timeline.
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: Loan sizes from £30,000 to £10,000,000 make Virgin Money a versatile option whether buying a single buy-to-let or refinancing a portfolio. The commercial mortgage product carries annual rates from 4.5% to 10.5%, putting it in line with mainstream bank pricing. Funding speed is standard bank pace. Full underwriting applies, so prepare trading history and affordability evidence.
Best next step: Explore Virgin Money BTL mortgage rates.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Loans from £30k to £10m
- Annual rates starting at 4.5%
- Suits single lets and portfolios
Need to know
- Standard bank processing timelines apply
- Trading history evidence required
- Affordability assessment is thorough
Expert take
A recognisable high-street brand whose commercial mortgage product spans modest terraces to million-pound buy-to-let acquisitions. Portfolio landlords funding an £800,000 purchase benefit from a lender accustomed to larger property exposures.
Source:https://uk.virginmoney.com/business/business-borrowing/
Barclays
Published loan range£1,000 to £25,000,000
Rate typeinterest 8.5% to 14.9% annually
Overview: Barclays structures its business mortgage as a secured term facility, which suits landlords who want certainty of repayment at the £800,000 level over a fixed horizon. Annual rates sit between 8.5% and 14.9%, reflecting a specialist secured product rather than vanilla high-street lending. Loans reach £25,000,000. Expect property valuation and potential personal guarantee requirements.
Best next step: See Barclays business mortgage options.
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Secured term facility for BTL
- Loans available to £25,000,000
- Backed by major UK bank
Need to know
- Annual rates from 8.5% to 14.9%
- Property valuation is mandatory
- Personal guarantee may be required
Expert take
A major bank offering secured business mortgages that extend well into portfolio-landlord territory. An £800,000 buy-to-let fits naturally within Barclays' lending scope, and the specialist secured structure gives landlords repayment certainty over a fixed term.
Offa
Published loan range£80,000 to £2,500,000
Rate typeinterest 5.9% to 7.5% annually
Overview: Offa explicitly labels its product as buy-to-let, making it one of the few lenders on this list with a named BTL mortgage rather than a general commercial facility. Loans run from £80,000 to £2,500,000 with annual rates between 5.9% and 7.5%. The product is purpose-built for residential investment property. Funding decisions can arrive within an hour.
Best next step: View dedicated BTL rates from Offa.
More info
Company stats
Eligibility
Loan range
Rates and debtor rules
Benefits
- Purpose-built buy-to-let mortgage
- Annual rates from 5.9% to 7.5%
- Initial decisions in one hour
Need to know
- Loans capped at £2,500,000
- Property security is required
- Valuation costs apply as standard
Expert take
A lender with a genuine buy-to-let product rather than a repurposed commercial mortgage. For an £800,000 residential investment, the dedicated BTL structure and competitive annual rates make this a natural fit for landlords seeking straightforward property finance.
Source:https://offa.co.uk/
Together Money
Published loan range£50,000 to £25,000,000
Rate typeinterest 0.55% to 1.5% monthly
Overview: Monthly interest starting at 0.55% ranks among the sharpest pricing on this list, a meaningful difference at the £800,000 level. The product is explicitly labelled as a Buy-to-Let Mortgage, with loans from £50,000 to £25,000,000. This lender handles everything from single lets to large portfolio refinancing. The product is property-backed, so valuations apply.
Best next step: Compare low monthly BTL rates here.
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Monthly rates starting at 0.55%
- Loans from £50k to £25m
- Explicit buy-to-let mortgage product
Need to know
- Property-backed lending only
- Valuation fees apply before offer
- Monthly pricing suits shorter terms
Expert take
A high-volume property lender with buy-to-let mortgages that span small flats to multimillion-pound portfolios. At £800,000, landlords gain access to some of the most competitive monthly rates available, making this a strong pricing play for residential investment.
Source:https://togethermoney.com/
Admiral leasing
Published loan rangeFrom £1,000
Rate typeinterest 5.5% to 13.5% annually
Overview: A funding decision can land in four hours, putting Admiral leasing among the fastest responders for landlords moving on buy-to-let at the £800,000 level. Despite the leasing name, the commercial mortgage product covers property-backed lending from £1,000 upwards. Annual rates range from 5.5% to 13.5%. The secured structure means valuations and affordability checks apply before completion.
Best next step: Get a BTL decision in four hours.
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Funding decisions in four hours
- Commercial mortgages from £1,000
- Annual rates from 5.5% for BTL
Need to know
- Property security always required
- Affordability checks apply before completion
- Valuation costs are additional
Expert take
A fast-moving lender whose commercial mortgage arm handles property-backed deals with unusual speed. For an £800,000 buy-to-let, the four-hour decision window helps landlords lock in opportunities while slower lenders are still processing paperwork.
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% to 1.05% place MT Finance in a tight pricing band that helps landlords model costs accurately at the £800,000 buy-to-let level. Loans run from £50,000 to £10,000,000, covering single lets and portfolio refinancing. This is a pure property-backed lender focused on short-term secured funding. Valuation and exit checks are standard.
Best next step: Compare MT Finance BTL monthly rates.
More info
Company stats
Loan range
Rates and debtor rules
Benefits
- Monthly rates from 0.89% to 1.05%
- Loans from £50k to £10m
- Pure property-backed lending model
Need to know
- Short-term secured funding only
- Valuation costs are mandatory
- Exit strategy checks apply
Expert take
A disciplined property lender operating within a narrow pricing band that makes cost modelling straightforward. An £800,000 buy-to-let lands well within their lending appetite, and the predictable monthly rates help landlords plan exits without pricing surprises.
Source:https://www.mt-finance.com/
Commercial Mortgage Calculator
Understanding interest rates on £800,000 buy-to-let finance
Rates vary by lender type. Specialist lenders like Inhale Capital publish rates from 1.05% to 1.3% per month, while MT Finance lists rates from 0.89% to 1.05% per month. Together Money sits in the 0.55% to 1.5% per month range. One Stop Business Finance publishes rates from 1.6% to 3% per month.
On the annual side, Offa offers rates from 5.9% to 7.5% per year, while Brightstar publishes rates from 5% to 12% per year. High-street banks also compete: NatWest Bank and Virgin Money both list rates from 4.5% to 10.5% per year. Barclays sits higher at 8.5% to 14.9% per year.
The rate you receive on an £800,000 buy-to-let loan depends on your portfolio strength, property yield, and credit profile. Monthly-rate products tend to come from specialist and bridging lenders, while annual-rate products are more common among banks and longer-term mortgage providers.
Loan-to-value ratios for high-value buy-to-let properties
LTV is a key factor when raising £800,000. Most specialist buy-to-let lenders cap LTV at 70% to 75%. For an £800,000 facility, a 75% LTV means the property must be worth at least £1,067,000. At 70% LTV, the property value needs to exceed £1,140,000.
| Lender | Max LTV | Rate Range |
|---|---|---|
| Brightstar | 100% | 5% to 12% per year |
| Offa | 80% | 5.9% to 7.5% per year |
| One Stop Business Finance | 75% | 1.6% to 3% per month |
| Inhale Capital | 75% | 1.05% to 1.3% per month |
| Together Money | 75% | 0.55% to 1.5% per month |
Portfolio landlords often use equity across multiple properties to strengthen their application. Lenders will typically commission a RICS valuation to confirm the property's market value and rental income potential before finalising the LTV offer.
Lender criteria for portfolio landlords seeking £800,000 finance
Portfolio landlords face specific scrutiny when applying for £800,000 buy-to-let finance. Most lenders on this list require a personal guarantee, including One Stop Business Finance, Inhale Capital, Brightstar, NatWest Bank, and Virgin Money.
High-street banks may impose additional hurdles. NatWest Bank requires a minimum turnover of £300,000 for its commercial mortgage product. Virgin Money expects at least one year of business history. Some specialist lenders have more flexible criteria: One Stop Business Finance requires no minimum turnover or trading history, which can help landlords with SPV structures.
Lenders also assess rental cover ratios, typically requiring rental income to exceed 125% to 145% of monthly mortgage payments. For an £800,000 loan, this means the property must generate substantial rental income to satisfy underwriters.
How to compare buy-to-let mortgage deals on larger investment properties
For an £800,000 buy-to-let investment, comparing deals requires looking beyond the headline rate. Start by matching the loan term to your strategy. NatWest Bank and Barclays offer terms up to 25 years, suiting long-term holds. MT Finance provides terms from 1 month to 2 years, which works for short-term refurbishment projects.
Check the minimum loan size on each product. Brightstar accepts facilities from £50,000, while Offa starts at £80,000. Most lenders on this list comfortably handle £800,000 within their published range.
Fee structures also matter. Arrangement fees, valuation costs, and exit fees all affect the total cost of borrowing. A broker can help you weigh rate type, term length, LTV, and fees against your investment timeline and cash flow projections.
