BTL Limited Company Tax Efficiency: Is Incorporation Worth It in 2026/27?

April 2027 Widens the Gap Further

From 6 April 2027, personal property income tax rates rise: basic goes from 20% to 22%, higher from 40% to 42%, additional from 45% to 47%. This is confirmed law, not a forecast. The change was announced at the Autumn Budget on 26 November 2025 and Parliament passed it in the Finance Act 2026.

The Section 24 finance cost credit rises too, from 20% to 22%, in step with the new basic rate. For basic rate taxpayers that broadly cancels out. For higher and additional rate taxpayers it does not. The gap between the tax rate charged and the credit given stays at 20 percentage points either way, but 42% on the same gross figure costs more in absolute terms than 40% did. Around 2.4 million individual landlords are affected, per HMRC's estimate.

None of this touches limited companies. Corporation tax stays at 19% up to £50,000 of profit and 25% above £250,000, with marginal relief in between, and finance costs remain fully deductible. From April 2027, a higher-rate landlord holding the same property personally pays 42% on net profit before any dividend is taken. The equivalent company profit is taxed at 19% or 25%, having already deducted the mortgage interest in full. That is a wider gap than the one driving 2025's record incorporation numbers.

The Cost Most Guides Miss: Dividend Tax Went Up Too

Here is the detail that has not caught up in a lot of older content. Dividend tax rates rose from 6 April 2026, following the same Autumn Budget 2025 that set the April 2027 property rate change in motion.

The ordinary (basic) rate rose from 8.75% to 10.75%. The upper (higher) rate rose from 33.75% to 35.75%. The additional rate held at 39.35%. The £500 dividend allowance is unchanged.

This matters because incorporation only delivers its full tax advantage while profit sits inside the company. The moment you draw it out as a dividend to live on, it faces this second layer of tax on top of the corporation tax already paid. A higher-rate taxpayer extracting company profit as dividends in 2026/27 pays corporation tax first, then 35.75% dividend tax on what is left, rather than 42% income tax in one step personally. The company route is still usually cheaper on the combined figure, but the margin is narrower than it was before April 2026, and it narrows further the more you draw out rather than retain.

If your plan is to build a portfolio and reinvest profit rather than draw an income from it, this point barely touches you. If you need the rental income to live on, work through both routes with real numbers before assuming the company wins.

The Cost of Moving an Existing Portfolio Across

Buying your next property through a company is close to a clean decision for a higher-rate taxpayer. Moving a property you already own into one is a different calculation entirely, because two tax charges land at once.

SDLT. A transfer to a connected limited company is treated as a sale at market value, whatever money actually changes hands. The company pays the standard residential SDLT bands plus the 5% additional dwelling surcharge that applies to company purchases. On a £300,000 transfer, that works out to roughly £20,000 under the current bands. Companies buying a dwelling above £500,000 can also face a 17% flat SDLT charge, though most buy-to-let SPVs qualify for the property rental business relief that removes it, provided the property is genuinely let commercially to an unconnected tenant.

CGT. The transfer also counts as a disposal for Capital Gains Tax. Any gain since purchase, above the £3,000 annual exempt amount, is taxed at 18% (basic rate) or 24% (higher and additional rate) on residential property. A property bought for £180,000 and now worth £300,000 has a £120,000 gain; after the allowance, a higher rate taxpayer owes roughly £28,000.

There is a narrower relief route for a genuine, pre-existing letting partnership incorporating as a going concern, under the partnership provisions in the Finance Act 2003, which can reduce the SDLT charge. HMRC will look hard at whether the partnership is real and pre-existing rather than set up shortly before the transfer purely to access the relief, so this is not a shortcut to try without specialist advice. Separately, Section 162 incorporation relief can defer the CGT on a genuine business transfer, but from 6 April 2026 it must be actively claimed rather than applying automatically, and it does nothing for the SDLT bill either way.

Combined transfer costs on a property with meaningful embedded gains commonly run to tens of thousands of pounds before legal and accounting fees. If the ongoing tax saving from incorporating that one property is a few thousand pounds a year, it can take a decade or more to break even on the transfer alone.

When the Case Is Strong, and When It Is Not

Strong case: higher or additional rate taxpayers buying new properties from scratch, planning a long hold, and intending to retain and reinvest profit rather than draw it out as income. There is no SDLT uplift or CGT crystallisation on a fresh purchase, and the mortgage interest deductibility advantage applies from day one.

Weaker case: basic rate taxpayers with a small portfolio, where the 20% Section 24 credit already roughly matches their tax rate, and where limited company mortgage rates (still typically 0.5 to 1 percentage point above personal-name equivalents) can eat most of the saving. Also weaker: existing portfolios with substantial embedded gains, where transfer costs take many years to recover, and anyone relying on the rental income as a personal salary, where dividend tax narrows the net benefit.

None of this is a recommendation either way. It is a set of questions to take to a specialist property accountant, who can model your specific tax band, gain position, and income needs before you commit to anything. Incorporation decisions are hard to unwind once made.

Model Your Own Numbers

The RealYield calculator lets you compare personal and limited company scenarios side by side, using your actual rent, mortgage, and expense figures, so you can see the real after-tax position rather than a generic worked example.

This article is for informational purposes only and does not constitute financial or investment advice. Tax rules and legislation change frequently. Always verify current rates with HMRC or GOV.UK and seek independent professional advice before making investment decisions.