Property Incorporation and Capital Gains Tax: When You Pay, When You Do Not

Property incorporation and capital gains tax is the question that stops most portfolio landlords before they start. Transferring rental property to a limited company is a disposal at market value in the eyes of HMRC, even though no money changes hands and you still own everything through the shares. On paper you have sold every property you own. Without relief, that produces a Capital Gains Tax bill at 18% or 24% before a single benefit of the new structure arrives.

Incorporation relief under section 162 of the Taxation of Chargeable Gains Act 1992 removes that charge in the right circumstances. Whether you are in those circumstances comes down to one question that has nothing to do with the size of your gain: is your letting a business, or is it an investment? Answer that first, because it decides everything below, and because it is the point at which most landlords discover the relief was never available to them. The clause-by-clause conditions are set out on our section 162 incorporation relief page.

The short answer: three outcomes, not one

Every property incorporation lands in one of three places for CGT. Knowing which one you are in is the whole decision.

Your position	CGT on the transfer	What happens to the gain
Letting is a business, whole business transferred wholly for shares, claim made in time	None	Rolled into the base cost of the shares; taxed when you sell them or wind up
Business test met but part of the value taken as cash or a director's loan	Partial	Relief given in proportion to the share consideration; the rest is chargeable now at 18% or 24%
Letting is investment, not a business (or no claim made)	Full	Whole embedded gain charged at market value, payable within 60 days of completion

Note what is missing from that table. SDLT appears in none of the three rows, because incorporation relief does not touch it. The company pays stamp duty in all three cases.

What incorporation relief actually does

When a business is transferred to a company in exchange for shares, section 162 stops the gain on the assets going in from being taxed at that moment. Instead it reduces the base cost of the shares you receive by the amount of the gain. You have not escaped the tax. You have moved it: it resurfaces when you dispose of the shares.

For a landlord, that turns an immediate market-value disposal of every property into a liability sitting quietly inside the share value, deferred until you choose to exit. That is the difference between a six-figure tax bill on day one and no CGT at all for years. It is why the relief is worth so much effort to secure, and why the misconception that it erases the gain is worth correcting early. Several guides use the language of avoiding CGT. The accurate word is deferring.

Incorporation relief for a property business: the test most landlords fail

Section 162 relieves the transfer of a business. It does not relieve the transfer of an investment. HMRC's starting point is that letting property is investment, and that single distinction decides most cases before any of the other conditions matter.

The leading authority, Ramsay v HMRC [2013] UKUT 226 (TCC), established that the question turns on the degree of activity rather than on any number of properties. Our section 162 page works through the case and how the tribunals have weighed each factor since.

What matters for your own position is the evidence HMRC looks for that the letting is active, organised and continuous:

• Several properties under your own active management rather than an agent's
• Substantial personal hours, evidenced at the time rather than reconstructed afterwards
• Services to tenants beyond bare letting, such as furnished short lets, cleaning or on-site presence
• Regular turnover and the re-letting work that comes with it
• Staff or contractors engaged on a continuing basis
• Business-like records, systems and decision-making

Two or three buy-to-lets handed to a managing agent, with the owner doing little more than banking rent, will not pass. There is no statutory threshold, and the point for the decision in front of you is blunt: if you cannot describe your week in terms that sound like running an enterprise, plan on the CGT being payable.

This applies to commercial as much as residential. Incorporation relief on a commercial building transferred to a limited company works on exactly the same conditions, and a commercial letting operation often clears the business hurdle more easily, because active lease management, repair obligations and tenant negotiation involve real and continuing work. A mixed portfolio of shops, offices and flats is treated as one business if that is how it is genuinely run.

The other conditions, in brief

Beyond the business test, three structural conditions have to hold. Fail any one and the relief goes.

• Whole business as a going concern. The entire rental business must transfer, together with all its assets other than cash. Keeping your best properties personally breaks the relief on the rest.
• Consideration in shares. The business must be transferred wholly or partly for newly issued shares. Relief is proportionate: value coming back as cash or a director's loan is not rolled over.
• A genuine transaction. The transfer must be a real commercial restructuring, not a paper arrangement built for the relief.

The consideration point is where careful planning most often costs money. Landlords like the idea of creating a large director's loan on incorporation so they can draw funds tax free for years afterwards. That credit balance is genuinely valuable, and it is a legitimate repayment route. But every pound of value left outside the shares is a pound of gain that is not deferred. There is a real tension between maximising the rolled-over gain and building a useful loan balance, and it should be modelled rather than assumed.

Transferring property to a limited company: what the CGT looks like

Take a landlord whose actively managed portfolio of furnished lets is worth £1.2m at open market value against a total base cost of £700,000. The embedded gain is £500,000.

Scenario one: the relief applies in full. The activity qualifies as a business, the whole portfolio transfers to the company wholly in exchange for newly issued shares, and the s.162 claim is made in time. No CGT arises. The £500,000 gain reduces the base cost of the shares, which are worth £1.2m and carry a base cost of £700,000.

Scenario two: a fifth taken as a director's loan. The landlord takes £240,000 of the value as a loan account rather than shares. Four fifths of the gain, £400,000, is rolled over. One fifth, £100,000, is chargeable now. After the £3,000 annual exempt amount and at the 24% higher rate, that is roughly £23,280 of CGT brought forward in exchange for a £240,000 balance to draw down tax free over time. Neither outcome is automatically better; it turns on how much cash you need out and how soon.

Scenario three: the business test fails. Nothing is deferred. The full £500,000 gain is chargeable at market value because you and the company are connected. With the annual exempt amount applied and almost the whole gain sitting above the higher-rate threshold, the charge is close to £119,000, reportable and payable within 60 days of completion through the UK property service, not at the following 31 January. That timing catches people out: it lands months before the company has generated anything.

Incorporation relief on a whole portfolio, and into an existing company

Two variations come up constantly.

Portfolio-scale transfers. Section 162 is well suited to moving an entire portfolio in one transaction, and at portfolio scale the relief is usually worth more than everything else in the deal. The condition that helps here is also the one that constrains you: because the whole business must go, a large portfolio moves as a single event, with every property valued at the same transfer date. That means one valuation exercise, one set of conveyancing, one refinancing package and one claim. It is a project, not a form.

Transfers into an existing company. Nothing in section 162 requires a newly formed company. An existing company, including one that already holds property or trades, can receive the business and issue fresh shares as consideration. The difficulty is valuation and dilution: the shares issued must properly reflect the value of the business going in relative to what the company already owns. Get that wrong and you have both a defective relief position and a shareholder problem. Where other people already hold shares, the transaction also needs to make commercial sense from their side, not just yours.

If you are weighing whether to move everything at once or in stages, the timing strategy sits in our guide to incorporating existing portfolios with a phased approach. Be aware that phasing and the whole-business condition pull against each other.

The rule change that catches people out: you now have to claim it

For most of its life, section 162 was automatic. Meet the conditions and the relief simply applied, unless you elected out under s.162A. That is no longer the position.

For transfers on or after 6 April 2026, Finance Act 2026 amended section 162 so the relief must be claimed. The new s.162(1)(b) requires a claim, with the information HMRC specifies, by the first anniversary of the 31 January following the tax year of the transfer. A transfer in 2026/27 must therefore be claimed by 31 January 2029. Finance Act 2026 also repealed the old s.162A disapplication election, so the position is now binary: claim it, or take the CGT charge.

The claim goes through the Capital Gains Tax pages of your Self Assessment return for the year of transfer, supported by the business evidence, the valuations and the share consideration. This is not a box-ticking afterthought at the end of the project. A late or defective claim converts a transfer you believed was tax deferred into a six-figure liability, and a great deal of guidance still online was written before the change.

Incorporation relief is a CGT relief only: it does nothing for SDLT

The most expensive misunderstanding in this area is treating CGT as the whole story. Section 162 relieves Capital Gains Tax. It has no effect whatsoever on Stamp Duty Land Tax.

When properties transfer to a connected company, the company is charged SDLT on the market value of what it acquires under s.53 of the Finance Act 2003, even though no cash passes. On residential property that includes the additional dwellings surcharge, which rose to 5% for transactions on or after 31 October 2024. For most portfolios the SDLT is the largest immediate cash cost of incorporating, and unlike the CGT it has just deferred, it is payable now.

Jurisdiction	Tax on the transfer	Additional-dwelling charge
England and Northern Ireland	SDLT	5% surcharge (from 31 October 2024)
Scotland	LBTT (Revenue Scotland)	8% Additional Dwelling Supplement
Wales	LTT (Welsh Revenue Authority)	Higher residential LTT rates

One statutory route can reduce the charge, and it is not incorporation relief: partnership relief under Schedule 15 of the Finance Act 2003, available only where a genuine, substantive partnership already owns and runs the portfolio. The conditions are demanding and the anti-avoidance exposure is real, so treat it as a route to be tested rather than assumed. Our guide to SDLT on incorporation and paying stamp duty twice covers that route and the wider SDLT cost in full.

What the relief covers, and what it leaves alone

Tax or cost	Effect of incorporation relief
CGT on the property gains	Deferred into the base cost of the shares, if the conditions are met and the claim is made
SDLT, LBTT or LTT	Not relieved. Charged on market value unless Schedule 15 partnership relief applies
Existing mortgages	Typically repayable and replaced with company lending
Corporation Tax on future profits and gains	Applies to the company going forward, 19% to 25% by profit level
Tax on extracting profits	Dividends taxed at 10.75%, 35.75% or 39.35% from 2026/27; the deferred CGT is separate

The benefit landlords are usually chasing is on the income side rather than CGT. Inside a company, mortgage interest is fully deductible against profits, which sidesteps the Section 24 finance-cost restriction that limits higher-rate landlords to a basic-rate credit on interest. Incorporation relief simply makes it possible to reach that structure without an upfront CGT charge. Whether the income-side saving justifies the SDLT, the refinancing and the ongoing compliance is a wholly separate calculation.

If your portfolio is not a business: what is left

Plenty of landlords want a company but cannot pass the business test. Incorporation relief is then off the table. A transfer is still possible; it just triggers CGT, and the planning shifts to managing the size and timing of that charge.

Spreading transfers across tax years

Interests can be moved gradually, using each owner's annual exempt amount of £3,000 a year, or £6,000 for a couple holding jointly. This is slow and only chips at the edges of a large gain, but it suits owners with modest gains and time.

Spouse transfers to use both positions

Transfers between spouses and civil partners are on a no-gain, no-loss basis under s.58 TCGA 1992, so a portfolio can move into joint names without CGT. Done genuinely, and combined with running the portfolio as a real partnership, this can support both the section 162 business framing and Schedule 15 relief later. It has to reflect commercial reality.

Timing a transfer into a lower-income year

Residential gains are charged at 18% within the basic-rate band and 24% above it. A transfer in a year when other income is low keeps more of the gain in the 18% band. That is marginal tuning rather than a strategy, but on one sizeable disposal it can be worth real money.

Gift holdover relief under s.165 is a different mechanism and is generally unavailable for straightforward investment property, so it is rarely the answer for a buy-to-let landlord. We compare the routes in our guide to incorporation and holdover relief for property.

How to use incorporation relief properly: the CGT-specific steps

The sequence below covers the CGT side only. The full operational checklist for the incorporation itself sits in our guide to incorporating a property portfolio in 2026.

• Build the business evidence first. Record hours, activities, services, staff and systems before any transfer. Contemporaneous proof is what survives an enquiry; a narrative written afterwards does not.
• Get independent valuations at the transfer date. RICS open market valuations for every property fix both the gain and the share value. HMRC tests these first.
• Decide the share-versus-loan split deliberately. Model the CGT cost of every pound taken outside the shares against the value of the loan balance it creates.
• Settle the long-term structure before you move. One company, the share classes, and who holds them. Splitting into multiple SPVs after a s.162 incorporation can crystallise the very gain you deferred.
• Model the SDLT and any partnership route separately. Never assume the surcharge away, and never let a CGT saving carry an SDLT bill the deal cannot fund.
• Diarise the s.162 claim at the start. The relief is no longer automatic, and the deadline is the first anniversary of the 31 January following the tax year of transfer.

Common mistakes that cost landlords the relief

Assuming a buy-to-let counts as a business. The default HMRC position is investment. Discovering that after the transfer is the worst possible sequence, because the disposal has already happened.

Keeping the best properties out. The whole business must go. Cherry-picking breaks the relief on everything that moved, not just on what was held back.

Pulling too much out as cash or loan. Consideration outside the shares is not rolled over, so an over-large director's loan partially defeats the deferral it was meant to complement.

Assuming commercial property is excluded. It is not. Landlords with shops, offices or industrial units sometimes rule themselves out of a relief they were better placed than most to claim.

Forgetting SDLT. The CGT can be perfectly deferred and the transaction still uneconomic once the immediate stamp duty is added.

Missing the claim deadline. For transfers from 6 April 2026, no claim means no relief. This is new, and most older guidance has not caught up.

Is incorporating right for your portfolio?

Even where the relief is available, incorporating is not automatically correct. A company pays Corporation Tax on rental profits and on gains it later makes, and you face a further charge when you extract profits. You lose personal CGT reliefs, including Private Residence Relief on any property you might one day have lived in, and you take on filing and administration.

Incorporation tends to reward higher-rate landlords with a genuine, actively managed, geared portfolio who are squeezed by Section 24 and who intend to retain and reinvest profits rather than live off them. It rarely rewards a small agent-managed holding where the business test fails, the SDLT is heavy relative to the portfolio, and the rent is needed as income. The pressure is rising either way: separate property income tax rates of 22%, 42% and 47% take effect from 6 April 2027 in England, Wales and Northern Ireland, which feeds into the 2027 rates and the incorporation decision.

What to do next, in order

The order matters more than the effort, because two of these steps stop being available once a transfer happens.

• First, before anything else, start the activity log. Hours, tasks, tenant contact, repairs handled, decisions made. Evidence created after the transfer is worth far less than evidence created before it, and this is the step that cannot be recovered later.
• Second, price the SDLT. Work out the stamp duty on a market-value transfer of the whole portfolio at the 5% surcharge. If that number is unaffordable in cash, the CGT analysis is academic and you can stop here.
• Third, test the finance. Confirm with a lender that the whole portfolio can be refinanced into a company before you fix a transfer date.
• Fourth, decide the share and loan split, then the company structure. Both are hard to change afterwards, and restructuring later can crystallise the gain you just deferred.
• Fifth, diarise the claim. The first anniversary of the 31 January following the tax year of transfer, entered on the day the transfer completes.

Wherever in the UK you are based, the relief works on the same terms. If you are within a year of incorporating and the first step is not already running, that is the one to start this week.

Related reading

• Section 162 incorporation relief for property landlords: the statutory test
• How to transfer property into a limited company in the UK
• The SDLT cost of transferring property to a company
• SDLT on incorporation: do you pay stamp duty twice?
• Incorporating a property portfolio in 2026
• Incorporating existing portfolios: the phased approach
• CGT on transferring property to a limited company

External references: TCGA 1992 s.162 at legislation.gov.uk, HMRC's Capital Gains Manual guidance on incorporation relief, HMRC's Property Income Manual on when letting is a business, FA 2003 Schedule 15 partnership provisions, the gov.uk SDLT higher rates guidance, and gov.uk Capital Gains Tax rates.