Incorporation and Mortgages: Financing When You Move to a Company

Many landlords in 2025 are considering moving their portfolios from personal ownership into limited companies. The drivers are varied: restructuring for succession planning, creating refinancing flexibility, or managing long-term liabilities. While incorporation can deliver commercial benefits, the mortgage implications are significant. Lenders treat company structures differently, and planning ahead is essential to avoid being caught out mid-transition.

Why Incorporation Matters for Mortgages

Incorporation changes both the borrower and the way affordability is assessed. Instead of lending to you personally, the lender is now lending to a Special Purpose Vehicle (SPV) company. This has implications for underwriting, product availability and long-term refinancing options. For many landlords, moving into a company unlocks more borrowing capacity thanks to lower stress test requirements, but it also comes with additional responsibilities.

How Lenders Assess Incorporated Borrowers

When you borrow through a limited company, lenders typically require:

• SPV structure – the company must be registered with an appropriate SIC code for property letting and investment.
• Personal guarantees – directors and major shareholders (usually 20%+) must guarantee the loan.
• Underwriting at director level – personal credit histories and income of directors are still assessed.
• Company accounts – for existing SPVs, up-to-date accounts and tax filings are required.

In practice, the lender looks at both the company and the individuals behind it.

Affordability: 125% vs 145%

A major reason landlords incorporate is the more favourable stress testing. While personal borrowers are usually tested at 145% coverage, limited company borrowers often qualify at 125% coverage. This makes refinancing possible for properties that would otherwise fail affordability tests in personal names.

Example:

• Loan: £200,000 at 5% rate = £10,000 annual interest.
• Personal name (145%) → Required rent: £14,500.
• Limited company (125%) → Required rent: £12,500.

That 20% difference can decide whether an application passes or fails.

Practical Challenges of Incorporation

Moving properties into a company structure involves more than just changing the borrower name:

• Mortgage consent – lenders will not usually allow a simple “switch”. Each mortgage must be refinanced into the company.
• Tax considerations – incorporation may trigger capital gains tax or SDLT unless carefully structured. Professional advice is essential.
• Product range – although wider than a few years ago, company products remain a smaller subset of the total BTL market.
• Higher costs – company rates and fees are usually slightly higher than personal equivalents.

Case Study: A Portfolio Transition

Scenario: A landlord with 10 properties in personal names struggled to refinance two low-yield flats under the 145% rule. They decided to incorporate and refinance the entire portfolio under an SPV.

Solution: The broker sequenced refinancing, starting with the strongest-yielding properties to establish affordability. The new SPV mortgages were tested at 125% coverage, allowing the weaker flats to be refinanced later.

Outcome: Although product rates were 0.4% higher on average, the landlord avoided being trapped on reversion rates and created a more flexible structure for future succession planning.

Tips for Landlords Considering Incorporation

• Check SIC codes align with lender requirements before applying.
• Plan refinancing in stages to avoid weak units undermining the portfolio.
• Obtain specialist tax and legal advice on CGT and SDLT before restructuring.
• Accept that personal guarantees are standard and plan accordingly.
• View incorporation as a long-term commercial decision, not just a short-term tactic.

Final Thoughts

Incorporation opens new doors for landlords, especially when affordability is tight under personal borrowing rules. But it is not a step to take lightly. Success depends on careful sequencing, specialist advice and choosing lenders who understand company structures. When done well, it can provide both borrowing flexibility and long-term stability.

Speak to Our Sponsor

Our sponsor works daily with landlords moving from personal to limited company structures. They know which lenders support SPVs, how to sequence refinances, and how to balance higher costs against long-term benefits.

Publication date: Monday, 1 December 2025