Limited company buy to let mortgage accountant letter capital repayment is a specialist form of landlord finance where the mortgage is taken out in a company name rather than a personal name, with repayments covering both interest and capital. UK landlords often choose this structure for tax efficiency, especially since Section 24 has limited mortgage interest relief for individual landlords. The “accountant letter” refers to a document lenders may require to confirm the financial standing of the limited company or its directors. Capital repayment means the loan is gradually paid off, not just the interest, which can improve long-term equity and reduce risk.
In 2025, buy-to-let lending through limited companies remains a popular strategy, particularly for portfolio landlords and higher-rate taxpayers. With rising interest rates and tighter affordability criteria, lenders are scrutinising applications more closely. However, the limited company route still offers flexibility and potential tax advantages, making it a key consideration for investment property finance.
Quick Facts
– Interest rates: 5.2% to 6.8% (2025 average for limited company BTL)
– Minimum deposit: 25% (some lenders require 30%)
– Rental coverage: 125% to 145% at a stress rate of 5.5% or higher
– Maximum loan-to-value (LTV): 75%
– Arrangement fees: 1% to 2% of the loan amount
– Application timeline: 4 to 8 weeks from submission to completion
These figures reflect the current 2025 market for limited company buy-to-let mortgages. Rates and criteria vary by lender, and professional advice is essential to navigate the options effectively.
How This Mortgage Works
A limited company buy to let mortgage accountant letter capital repayment product is designed for landlords purchasing or remortgaging rental properties via a Special Purpose Vehicle (SPV) or trading limited company. Unlike interest-only mortgages, capital repayment mortgages reduce the outstanding balance over time, helping investors build equity and reduce long-term debt exposure.
Lenders offering these products typically require an accountant’s letter to confirm the financial health of the company, especially if it’s newly formed or has limited trading history. This letter may also verify director income, retained profits, or confirm that the company is suitable for taking on debt.
Product types include fixed-rate mortgages (often 2, 5, or 10 years), variable rates linked to lender SVRs, and tracker rates tied to the Bank of England base rate. In 2025, fixed rates are popular due to economic uncertainty and inflation.
This mortgage structure suits portfolio landlords, higher-rate taxpayers, and investors seeking long-term growth. It differs from residential mortgages in that affordability is based on projected rental income, not personal earnings, and underwriting focuses on the company’s structure and viability.
Eligibility and Criteria
To qualify for a limited company buy to let mortgage accountant letter capital repayment, applicants must meet both personal and corporate criteria. Lenders assess the company’s structure, financials, and the property’s rental income potential.
Income requirements vary. While some lenders don’t require a minimum personal income, others prefer directors to earn at least £25,000 annually. The accountant letter helps verify income, especially if directors rely on dividends or retained profits.
Rental coverage is a key affordability metric. Most lenders require the projected rental income to cover 125% to 145% of the monthly mortgage payment, stress-tested at an interest rate of 5.5% or higher. For capital repayment mortgages, the stress rate may be higher to account for the repayment element.
Property types must be standard buy-to-let investments. Flats above commercial premises, HMOs, and multi-unit blocks may be acceptable but often come with stricter criteria. New builds are generally accepted, but some lenders apply lower LTVs.
Credit score expectations are moderate. While perfect credit isn’t essential, adverse credit (CCJs, defaults) may limit lender options. Most lenders expect no recent missed payments and a clean credit history for the last 12 months.
Applicants must be aged 21 to 85 (at mortgage end), and both employed and self-employed directors are considered. Retired applicants may need to show pension income or other assets.
Portfolio landlords—those with four or more mortgaged properties—face additional scrutiny. Lenders assess the entire portfolio’s performance, including rental coverage and overall LTV. Some require a business plan or asset and liability statement.
Limited company applications must be via an SPV with SIC codes related to property letting (e.g. 68209). Trading companies may be accepted, but fewer lenders cater to them. Personal name applications follow different tax rules and are subject to Section 24 restrictions.
Compliance with right-to-rent checks and local licensing (e.g. for HMOs) is essential. Lenders may request proof of registration or compliance with local authority regulations.
Costs and Affordability
Limited company buy to let mortgages come with several costs. Arrangement fees typically range from 1% to 2% of the loan, often added to the mortgage. Valuation fees depend on property value (£300–£1,000+), and legal fees vary based on complexity and lender panel requirements. Broker fees may apply, especially for specialist lenders.
Interest rates for capital repayment mortgages are slightly higher than interest-only options, reflecting the reduced risk to lenders. Fixed rates offer certainty, while variable or tracker rates may be cheaper initially but carry fluctuation risk.
Affordability is primarily based on rental income, not personal earnings. Lenders use rental stress tests to ensure the property can cover repayments even if rates rise. For capital repayment mortgages, the stress rate is higher to reflect the full monthly cost.
Taxation is a key consideration. Limited companies can deduct mortgage interest as a business expense, avoiding Section 24 restrictions that affect individual landlords. However, corporation tax applies to profits, and extracting income (via dividends or salary) may incur personal tax.
Insurance is mandatory. Buildings insurance is required by all lenders, and landlord insurance (covering loss of rent, liability, etc.) is strongly recommended.
The Application Process
Applying for a limited company buy to let mortgage accountant letter capital repayment involves several stages:
– Research suitable lenders and products
– Consult a mortgage broker for tailored advice
– Prepare company documents (Certificate of Incorporation, Articles of Association, SIC code)
– Obtain an accountant’s letter verifying financials
– Submit application with supporting documents (ID, proof of address, company accounts, rental projections)
– Property valuation arranged by lender
– Legal process begins (conveyancing, title checks)
– Mortgage offer issued
– Completion and funds released
Documentation requirements include director ID, proof of income (salary, dividends), company bank statements, and rental income estimates (ASTs or letting agent letters). An accountant’s letter is often mandatory, especially for new SPVs.
Valuations are usually physical inspections, though desktop valuations may be used for low-risk cases. Surveyors assess market value and rental potential.
Applications typically take 4 to 8 weeks, depending on lender processing times and legal complexity. Working with a broker can speed up the process and improve approval chances.
Common reasons for rejection include poor credit, insufficient rental income, incorrect SIC code, or missing documentation. Ensuring all paperwork is accurate and complete is crucial.
Benefits, Risks and Alternatives
The main benefit of a limited company buy to let mortgage accountant letter capital repayment is long-term financial planning. Capital repayment builds equity, reduces debt, and can improve portfolio leverage. Limited company structures offer potential tax efficiency, especially for higher-rate taxpayers.
Risks include void periods (no rental income), rising interest rates, and regulatory changes (e.g. EPC rules, licensing). Capital repayment mortgages have higher monthly costs, which may affect cash flow.
Alternatives include interest-only mortgages (lower monthly payments), bridging loans (short-term finance for renovations), commercial mortgages (for mixed-use or large portfolios), and development finance (for new builds or conversions).
Remortgaging allows landlords to switch to better rates or release equity. Product transfers are simpler but may not offer the best deal. Comparing both options is essential.
Frequently Asked Questions
What deposit do I need for a limited company buy to let mortgage?
Most lenders require a minimum deposit of 25% for limited company buy-to-let mortgages. Some may ask for 30% if the property is non-standard or if the applicant has limited experience. The deposit must come from the company or directors, and gifted deposits are rarely accepted for limited company applications.
Can I get limited company buy to let mortgage accountant letter capital repayment through a limited company?
Yes, many UK lenders offer capital repayment buy-to-let mortgages to limited companies. You’ll need to set up an SPV with the correct SIC code and provide an accountant’s letter confirming the company’s financial position. This structure is common among portfolio landlords and tax-conscious investors.
What rental coverage do lenders require?
Lenders typically require rental income to cover 125% to 145% of the mortgage payment, stress-tested at an interest rate of 5.5% to 7%. For capital repayment mortgages, the stress rate is higher to reflect the full monthly cost. A letting agent’s letter or AST is usually required to verify expected rent.
How does Section 24 tax affect buy-to-let mortgages?
Section 24 restricts individual landlords from deducting mortgage interest from rental income, increasing their tax liability. Limited companies are not affected, as they can deduct interest as a business expense. This is a key reason many landlords are switching to limited company structures for buy-to-let.
Can I live in a property with limited company buy to let mortgage accountant letter capital repayment?
No, properties bought with a limited company buy-to-let mortgage must be used solely for rental purposes. Living in the property would breach the mortgage terms and could lead to repossession. If you plan to live in the property, you’ll need a residential mortgage instead.
What credit score do I need for a buy-to-let mortgage?
While there’s no universal minimum score, most lenders prefer a good credit history with no recent defaults or CCJs. A score of 650 or higher is typically acceptable, but