Considering incorporation, what are the current corporation tax rates for a limited company holding buy-to-let properties in the UK, and at what rental income level does it become tax-efficient compared to being a sole trader?
Quick Answer
For UK limited companies holding buy-to-let properties, Corporation Tax is 19% on profits under £50k and 25% for profits over £250k, with a tapered rate in between. Incorporation often becomes tax-efficient for landlords paying higher/additional rate income tax due to Section 24.
## Understanding Corporation Tax for UK Property Companies
Incorporating a property portfolio and running it as a limited company (often referred to as an SPV - Special Purpose Vehicle) has become a popular strategy for UK landlords, largely driven by changes to how individual landlords can offset mortgage interest.
### Current Corporation Tax Rates (as of December 2025)
For companies in the UK, the Corporation Tax rates are as follows:
* **Small Profits Rate:** 19% on profits up to £50,000.
* **Main Rate:** 25% on profits over £250,000.
* **Tapered Rate:** For companies with profits between £50,000 and £250,000, there's a marginal relief resulting in a tapered rate, meaning the effective tax rate gradually increases from 19% to 25%.
It's important to note that these rates apply to the company's *taxable profits* (rental income minus allowable expenses, *including* mortgage interest), not just the gross rental income.
### Compared to Sole Trader (Individual Landlord)
As an individual landlord, you are subject to Income Tax on your net rental profits. Crucially, since April 2020, Section 24 means individual landlords *cannot* deduct mortgage interest from their rental income before calculating tax. Instead, they receive a 20% tax credit. This severely impacts higher and additional rate taxpayers.
* **Individual Landlord Mortgage Interest:** Not deductible from rental income; only a 20% tax credit is applied.
* **Company Mortgage Interest:** Fully deductible as an expense when calculating taxable profits for Corporation Tax.
### When Does Incorporation Become Tax-Efficient?
While there's no exact 'rental income level' that dictates efficiency for everyone, incorporation generally becomes more tax-efficient for landlords who:
* **Are higher or additional rate income taxpayers:** If you pay 40% or 45% income tax, Section 24's restriction on mortgage interest relief hits hard. A company can fully offset interest against its profits at 19% or 25% Corporation Tax.
* **Have significant mortgage interest expenses:** The ability to fully deduct mortgage interest is a major benefit of incorporation.
* **Plan to reinvest profits:** If you intend to keep profits within the company to purchase more properties, you avoid paying personal income tax on those profits until you extract them (e.g., as dividends, which are taxed differently).
* **Are looking for long-term growth:** The long-term strategy of accumulating wealth within a company, potentially selling the company or its assets in the future, can offer different tax planning opportunities.
However, incorporation comes with additional costs and complexities:
* **Increased Administration:** More complex accounting and regulatory requirements.
* **Higher Lending Costs:** Buy-to-let mortgages for limited companies can sometimes have slightly higher rates (e.g., typical BTL mortgage rates are 5.0-6.5% for 2-year fixed, 5.5-6.0% for 5-year fixed) and arrangement fees, although this gap is narrowing.
* **SDLT on Transfer:** Transferring existing properties into a company can trigger Stamp Duty Land Tax (SDLT), including the 5% additional dwelling surcharge, unless specific reliefs apply (e.g., s.162 CGT relief for furnished holiday lets, or partnership rules).
* **Extraction of Funds:** You'll face personal taxes (income tax on salary and/or dividend tax) when you extract profits from the company for personal use.
Therefore, the 'tax-efficient' point is highly personal and depends on your individual income tax rate, the level of debt on your properties, and your long-term investment goals. It's not just about rental income but *profitability* and *debt levels*.
Steven's Take
Listen, incorporating your property portfolio isn't always the silver bullet, but for many, it absolutely is. If you're a higher or additional rate taxpayer, the hit of Section 24 as an individual landlord is massive. Your company, on the other hand, can fully deduct that mortgage interest expense before paying 19% or 25% Corporation Tax. That's a game-changer. My advice? Don't look just at gross rent. Look at your net profits, your personal income, and your long-term goals. If you're scaling up and reinvesting, the benefits of holding properties in a company often outweigh the extra admin. Get proper tax advice; it'll pay for itself.
What You Can Do Next
Assess your current personal income tax rate (basic, higher, additional).
Calculate your current net rental income (before mortgage interest) and mortgage interest costs as an individual.
Speak to a specialist property accountant to model the tax implications of operating as an individual vs. a limited company for your specific circumstances.
Review property-specific mortgage rates and lending criteria for limited companies, as these can differ from individual rates.
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