Is a Limited Company Buy-to-Let Right for Your Portfolio? Pros, Cons and the 2026 Picture

The Growth of Limited Company Buy-to-Let

Limited company buy-to-let — using a Special Purpose Vehicle (SPV) company to hold investment properties — has grown from a niche arrangement into mainstream portfolio practice. UK Finance data shows that the majority of new buy-to-let mortgage applications by portfolio landlords are now made through limited companies, a trend that has accelerated steadily since Section 24 made personal ownership less efficient for higher-rate taxpayers.

Whether a limited company is right for your portfolio depends on your tax position, your plans for the portfolio, and your attitude to complexity and cost.

The Case For a Limited Company

Full mortgage interest deductibility. Unlike personal landlords, limited companies can still deduct 100% of mortgage interest as a business expense before calculating Corporation Tax. For portfolios with significant debt, this difference can amount to thousands of pounds per year.

Lower tax on retained profits. Corporation Tax at 19% (small profits rate on profits up to £50,000 in 2026) is materially lower than the 40% or 45% Income Tax that applies to higher-rate personal landlords. Profits retained within the company are not subject to personal tax until drawn, creating a compounding advantage for landlords building a portfolio rather than maximising current income.

Inheritance Tax planning. Shares in a property SPV can, in some circumstances, be transferred more flexibly as part of estate planning than directly held property. This is a complex area requiring specialist legal and tax advice.

Income splitting. A limited company allows shares to be allocated to a spouse or family member who is a basic-rate or non-taxpayer, enabling dividends to be drawn at a lower tax rate. HMRC's settlements rules apply — the arrangement must be genuine.

The Case Against a Limited Company

Higher mortgage rates. Buy-to-let mortgages for limited companies typically carry interest rates 0.2–0.5% higher than equivalent personal mortgages, though the gap has narrowed as lender competition has intensified in the limited company space.

Transferring existing personally-held properties is expensive. Moving properties from personal ownership into a company is a disposal for both CGT and SDLT purposes. For landlords with a large existing personal portfolio and significant unrealised gains, the cost of incorporation can be prohibitive.

Administrative cost. A limited company requires annual accounts, a Corporation Tax return, Companies House filings, and typically a company secretary or accountant to manage compliance. These costs typically run £800–£2,000 per year for a simple SPV.

Extracting income is taxed. Profits in the company are only tax-free while they remain there. Drawing them as salary or dividends triggers additional tax — the overall combined Corporation Tax plus dividend tax can, in some scenarios, be higher than the personal tax that would have applied anyway.

Who Should Strongly Consider a Limited Company?

• Higher-rate or additional-rate taxpayers with significant mortgage debt
• Landlords who plan to retain profits in the portfolio rather than draw income
• Those starting fresh without an existing personal portfolio to transfer
• Landlords with a long time horizon who value the compounding benefit of lower-tax retention

Use our [Portfolio Yield Calculator](/portfolio-yield-calculator) to model your net returns under personal versus limited company ownership, and speak with a property-specialist accountant before making any structural decision.

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