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Property and stamp taxes
Property is behind many demergers, and it brings stamp taxes into play. These guides explain how property can be moved, which SDLT and stamp duty reliefs can apply, and the clawbacks to plan around.
3 guides · Last reviewed 7 October 2026
Capital reduction or liquidation demerger? How to choose
Capital reduction and liquidation demergers can both split a company tax neutrally. How they differ on cost, reserves, timing and risk, and how to choose.
Read the guideSeven demerger mistakes that create a tax bill
Most demerger tax bills come from avoidable mistakes: the wrong route, steps out of order, missed clawbacks. Seven to watch for and how to avoid them.
Read the guideMoving property in a demerger: the SDLT traps
SDLT can turn a tax-neutral demerger into a large bill. Group relief clawback, reconstruction and acquisition relief conditions, and Wales and Scotland.
Read the guide
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FAQs
Frequently asked questions
Why do so many demergers involve property?
Because owner-managed trading companies often build up the property they trade from, or invest surplus profits in property. Owners then want to protect that property from the risks of the trade, keep it when the trade is sold, or pass it to different family members. A demerger can move the property into a separate company owned by the same shareholders.
Which taxes apply when property moves in a demerger?
Potentially capital gains or corporation tax on the transfer, SDLT (or Land Transaction Tax in Wales, LBTT in Scotland) on the land transaction, and stamp duty on any shares transferred. Reliefs can often remove these where the conditions are met. SDLT reliefs have their own conditions and clawback rules, separate from the capital gains reliefs.
What is the biggest SDLT risk in a property demerger?
Usually a relief being withdrawn after the event. Group relief can be clawed back if the company holding the property leaves the group within three years, and reconstruction or acquisition relief can be withdrawn if control of the acquiring company changes within three years. A demerger, or a sale soon after one, is often exactly the trigger.
Is stamp duty payable on shares in a demerger?
It can be, at 0.5% of the consideration on a transfer of shares, although many demerger steps involve newly issued shares rather than transfers, or qualify for relief. Reliefs for share-for-share acquisitions have conditions, including mirror-image shareholdings and no arrangements for someone to obtain control. Partitions often fail those conditions.
Can property be moved without any SDLT at all?
Often, where a relief applies in full. Reconstruction relief can remove SDLT entirely where shares are issued to all the shareholders in mirror-image proportions and the commercial reasons tests are met. Where the conditions aren't met, the charge can be based on market value because the companies are connected. It depends on the steps and who ends up owning what.
What are the current SDLT rates on commercial property?
In England and Northern Ireland, SDLT on non-residential and mixed-use freehold property is 0% up to £150,000, 2% on £150,001 to £250,000 and 5% above £250,000. Wales and Scotland have their own taxes and rates. Because the charge is on value rather than gain, it can be significant on even a modest commercial property.
Does a property company qualify for the same reliefs as a trading company?
Not always. The statutory demerger rules don't cover property investment, and SDLT acquisition relief requires a trading undertaking. Reconstruction reliefs for capital gains and SDLT can still apply to property businesses, but HMRC has said there may be a problem for the company-level capital gains relief where a subsidiary only holds investments or property, so the structure needs care.
What happens with a mortgage on the property in a demerger?
The lender will usually need to consent, and the loan may move with the property or be refinanced. For SDLT, a liability taken over by the buying company can count as consideration. For capital gains, the company transferring its business can usually only receive the assumption of liabilities in return. Bank discussions should start early in the timetable.
Can property in Scotland or Wales be demerged in the same way?
Yes, but the land tax is different. Scotland has Land and Buildings Transaction Tax and Wales has Land Transaction Tax, each with its own group, reconstruction and acquisition reliefs. They are broadly similar to SDLT but not identical, and are administered by Revenue Scotland and the Welsh Revenue Authority respectively.
Do SDLT returns still need to be filed if relief applies?
Yes, normally. A land transaction return is usually needed even where relief is claimed, and in England and Northern Ireland it is due within 14 days of the effective date. If a relief is later withdrawn, a further return is required within 30 days of the triggering event.
Will separating property affect inheritance tax?
It can. Shares in a company whose business is mainly holding investments, including let property, don't qualify for Business Relief. Moving property out of a trading company into its own company can therefore take its value outside Business Relief. That may still be the right step, but it should be weighed alongside the other benefits.
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Free guide
Demergers: the owner's tax guide
The main UK demerger routes, the reliefs and HMRC clearances that make them work, and the order of steps that protects them, for owners and their advisers.
Demergers: the owner's tax guide
Talk to us before anything moves.
In a demerger, the order of the steps is everything. A confidential first call, with a reply the same working day.
Or write to taxadvisory@aswatax.co.uk
