In short: For most individual landlords with one or two personally-owned properties, moving them into a limited company now is expensive and rarely worth it, you’ll usually trigger both Capital Gains Tax and Stamp Duty Land Tax as if you’d sold the property to a stranger, with no automatic reliefs. Incorporation Relief exists but requires you to be running a genuine “business,” not just holding an investment, which is a high bar for a single BTL. Where incorporation still makes clear sense is for new purchases going forward, or for landlords with several properties who are actively, demonstrably running it as a business and can meet the conditions.
Why it’s not “just paperwork”
Moving a property you already own personally into a limited company you also own is legally treated as a sale, even though no money actually changes hands and you’re just moving the asset from your left pocket to your right. HMRC and the Land Registry don’t care that it’s “still you” behind both; the company is a separate legal person, so the transfer triggers:
- Capital Gains Tax on you personally, based on the property’s current market value minus your original cost (plus allowable costs), see Q14 for how CGT is calculated. Current residential property CGT rates are 18% (basic rate) and 24% (higher/additional rate), after your £3,000 annual exempt amount.
- Stamp Duty Land Tax paid by the company, at normal residential rates plus the 5% additional-property surcharge, again based on market value, not what you originally paid.
For a property that’s risen substantially in value since purchase, common for anyone who bought more than five or six years ago, this combination can easily run into tens of thousands of pounds before you’ve refinanced or seen a penny of tax benefit.
Incorporation Relief: the theoretical escape hatch
Section 162 Incorporation Relief can defer the CGT charge, rolling it into the base cost of the shares you receive in exchange for the property. The catch is the conditions are strict and were designed for genuine trading and business incorporations, not passive property holding:
- You must be running a business, not simply holding an investment. HMRC’s long-standing (and tribunal-tested) position is that owning and letting a single property, or even a small number of properties with minimal day-to-day involvement, is unlikely to count as a “business” for these purposes, it looks too much like passive investment.
- The whole business (not just the property) has to transfer as a going concern, with substantially all assets other than cash exchanged wholly or partly for shares.
- From 6 April 2026, incorporation relief also stopped being automatic, under Finance Act 2026 changes, you now have to actively claim it by the first anniversary of the 31 January following the tax year of the transfer, rather than it applying by default.
- Landlords who can point to significant time spent actively managing multiple properties (dealing with tenants, maintenance, sourcing new investments, managing finances as a coordinated operation) have a stronger case than someone with a single let bought as a long-term investment.
There’s a narrower route via partnership incorporation: if you and someone else (e.g. a spouse) genuinely run a property partnership as an active joint business, incorporating that partnership can avoid the SDLT charge specifically (partnership-to-company transfers have their own rules), though CGT incorporation relief still depends on meeting the “business” test above. This is a specialist area and easy to get wrong, professional advice is essential before relying on it.
What it costs in practice, even where relief helps
Even where CGT is successfully deferred, SDLT is very rarely relieved for a simple BTL transfer, there’s no general first-time exemption for moving existing property into a company. You should expect to budget for:
- SDLT at standard rates + 5% surcharge on the property’s market value
- Legal fees for the transfer (conveyancing, company structuring)
- A brand-new mortgage, because the existing personal mortgage must be redeemed and the company needs its own buy-to-let facility, assessed under limited company lending criteria, rates and fees for company BTL products are often somewhat higher than personal BTL equivalents, though the gap has narrowed as the market has matured
- Valuation and lender arrangement fees on the new mortgage
- Ongoing costs: annual company accounts, Corporation Tax returns, Companies House filings, and higher accountancy fees than a simple personal Self Assessment return, typically an extra several hundred pounds a year at minimum
When incorporation still makes sense
The calculus is very different for new purchases. If you’re buying your next (or first) buy-to-let today, buying it directly through a limited company (an “SPV”, special purpose vehicle) sidesteps the whole transfer problem, because there’s no existing personal ownership to unwind. You get:
- Mortgage interest treated as a normal deductible expense against Corporation Tax (no Section 24 restriction, see Q9)
- Corporation Tax rates (19%–25%, with marginal relief between £50,000–£250,000 of profit) instead of Income Tax, which is often more favourable for higher-rate taxpayers, especially if profits are retained in the company rather than drawn out
- A clean structure from day one, without the transfer tax hit
It also suits portfolio landlords planning to reinvest profits rather than live off rental income now, since extracting profit from a company (via salary or dividends) creates its own second layer of tax, which can erode some of the Corporation Tax advantage if you need the cash personally.
The bottom line
For a single personally-owned BTL bought years ago at a much lower price, the CGT and SDLT bill on incorporating today will often outweigh the ongoing Section 24 saving for years, sometimes a decade or more, it’s rarely “too late” so much as “was probably never the right move for a single property held this way.” Run the actual numbers (CGT + SDLT + refinancing costs vs. annual tax saving) with an accountant before assuming either way. For new acquisitions, though, buying through a company from the outset remains a live and often sensible option, particularly for higher-rate taxpayers planning to hold and grow a portfolio over the long term.
Related reading
Sources
- Set up a limited company: step by step, GOV.UK
- Stamp Duty Land Tax: residential property rates, GOV.UK
This is general information, not legal, tax, or financial advice. Figures and rules referenced are accurate to the best of available information as of July 2026 unless stated otherwise. Tax rules depend on personal circumstances, always check current HMRC guidance (gov.uk) or consult a qualified accountant/tax adviser before making decisions.
Last Updated on September 21, 2026