Limited company buy-to-let — is it tax-efficient for contractors in 2026?
Direct Answer
The Mortgage Works (TMW) has cut limited company BTL rates in June 2026 — the 5-year fix at 75% LTV now sits at 5.49% (down 18bps), and the 2-year switcher at 5.44%. Rate cuts tend to prompt the question of whether holding property in a company makes sense. For higher and additional rate taxpayers, the answer is often yes — because companies can deduct the full mortgage interest against rental income, unlike personal landlords who face Section 24 restrictions. But the structure matters enormously, and contractor directors need to understand the interaction between their contracting company and any property activities before proceeding.
Why limited company BTL is popular with higher rate taxpayers
Since the introduction of Section 24 restrictions (phased in from 2017 and fully in force since 2020), personal landlords who pay higher or additional rate income tax face a significant disadvantage. They can no longer deduct mortgage interest as an expense — instead they receive only a 20% tax credit on the interest paid. For a higher rate taxpayer, this effectively means paying 40% income tax on the gross rental income and receiving back only a 20% credit — a material additional tax cost.
Limited companies are not subject to Section 24. A company that owns rental property can deduct mortgage interest in full as a business expense — just as any other business deducts its finance costs. The rental profit that remains is then subject to corporation tax rather than income tax.
For a contractor already operating through a limited company and paying higher rate income tax, the tax differential between personal and company ownership of rental property can be substantial.
Corporation tax on rental profits — the numbers
When a company receives rental income, the profit (income minus allowable expenses including full mortgage interest) is subject to corporation tax:
- 19% small profits rate — applies where company taxable profits are below £50,000
- 25% main rate — applies where profits exceed £250,000
- Marginal relief — applies between £50,000 and £250,000, with effective rates between 19% and 25%
Compared with 40% or 45% income tax on personal rental income for higher and additional rate taxpayers, the corporation tax rates are substantially lower — even before considering the Section 24 advantage on mortgage interest.
However, this is only part of the picture. When you extract the after-tax rental profit from the company as dividends, dividend tax also applies — at 8.75% (basic rate), 33.75% (higher rate), or 39.35% (additional rate). The total two-stage tax cost (corporation tax plus dividend tax) needs to be modelled against the personal tax cost to determine whether the company structure is genuinely more efficient in your specific situation. See our dividend and salary calculator for more.
The SPV question — should property sit in your contracting company?
Many contractor directors considering property investment ask whether the rental property can simply be held in their existing contracting company. The answer is technically yes — but it is almost always the wrong structure.
HMRC may question whether a single company combining IT contracting (or any professional services contracting) with rental property activities has genuine commercial substance for doing so. Where HMRC believes the combination lacks substance, it can seek to challenge the overall company structure.
The cleaner — and far more commonly recommended — approach is to use a separate Special Purpose Vehicle (SPV): a limited company set up specifically and solely to hold property. This provides:
Clear separation of contracting and property activities — removing any HMRC challenge risk on mixed-activity grounds
Cleaner accounts — easier to see the profitability of each activity separately
Simpler future planning — selling or restructuring the property portfolio is more straightforward when it sits in its own entity
Lender compatibility — most limited company BTL lenders lend to SPVs with an appropriate SIC code, not to general trading companies
Setting up an SPV is straightforward and inexpensive. The ongoing compliance cost (a second set of company accounts) is modest relative to the structural benefits. See our limited company guide for more on how companies are structured.
Extracting rental profits — dividend tax in practice
Once your SPV has received rental income and paid corporation tax on the profit, the after-tax profit sits as retained earnings inside the company. To access it personally, you will typically pay yourself a dividend — and dividend tax applies.
The current dividend tax rates (2025/26) are:
- 8.75% — basic rate (income up to £50,270 including dividends)
- 33.75% — higher rate (income between £50,270 and £125,140)
- 39.35% — additional rate (income above £125,140)
The £500 annual dividend allowance means the first £500 of dividends is tax-free — but for most property investors this is a small portion of total dividends.
Critically, if you are already drawing dividends from your contracting company that take your income to or above the higher rate threshold, rental dividends from an SPV will also be taxed at 33.75% or higher. Whether this still beats personal ownership depends on the magnitude of the Section 24 benefit and the scale of your mortgage interest.
This is genuinely complex modelling — and the right answer varies significantly by individual. If you are considering acquiring a property through a company structure, this is exactly the kind of decision where professional advice pays for itself several times over.
What AutoBooks can help with — and where you may need specialist property advice
AutoBooks specialises in limited company contractors. We understand the interface between contract income, director remuneration, and company structure — and we can help contractor directors who also hold rental property through a company manage the overall tax position efficiently.
What we handle as standard:
- Corporation tax planning across your contracting company and any SPVs you hold
- Optimising your salary and dividend strategy taking into account all sources of company income
- IR35 compliance and record-keeping — see our IR35 guide
- Making sure your dividend decisions across multiple companies are coordinated and correctly documented
Where a specialist property accountant may add value:
- Detailed modelling of the personal vs company ownership decision before you buy
- SDLT planning for portfolio landlords
- Capital gains tax planning on property disposals
- Multiple properties, HMOs, or commercial property — where property-specific tax rules become more complex
We are happy to refer you to a specialist where your property situation warrants it — and to work alongside them on the overall picture. Getting the right advice at the right time is always the right approach.
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