Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

Demerger definition

What does Demerger mean? In practice, a demerger is the separation of one or more businesses from a corporate group so they operate independently, usually with substantially the same ultimate shareholders and separate management. It is a descriptive corporate reorganisation term rather than a single companies-law procedure. In the UK and Ireland, tax legislation includes regimes commonly referred to as statutory demerger rules, which can allow tax‑neutral treatment or exempt distributions where strict conditions are met. Typical implementation routes include: - Capital reduction demerger. - Scheme of arrangement. - Hive‑down of a business to a new subsidiary followed by a distribution in specie of its shares (often...

UK corporate demergers: statutory, capital reduction and liquidation routes, pre‑demerger restructuring and HMRC clearances: key tax reliefs, risks and stamp taxes

Published by a LexisNexis Tax expert

Practice notes

A Demerger is the division of a Company’s business into two or more segments, usually continued by Successor entities that remain under the original Ownership.

Typical commercial reasons include:

splitting a business ahead of a sale or other deal
bringing in different shareholders (or option holders) to one venture but not another
separating activities with differing risk, regulatory or commercial profiles
resolving a shareholder dispute
releasing value from an underlying business
carving out a non-core activity as the group matures, or
using a demerger as an alternative to a sale

There may also be tax advantages, for example:

investment businesses can be split from trading businesses so trading businesses can qualify for:
- business asset disposal relief (formerly entrepreneurs' relief)
- the substantial shareholdings exemption, or
- inheritance tax business property relief, see Practice Note: IHT—business property relief
, and
the proceeds of any sale of a demerged business are realised directly by shareholders, so any gain may qualify for business asset disposal relief

However, if tax is the sole reason for a demerger, the various commercial purpose tests are...

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Zoe Feller

Bird & Bird

I am a tax lawyer specialising in corporate, asset finance and structured finance transactions.I have particular strength advising on the tax aspects of international matters, often coordinating teams across multiple jurisdictions.I work with clients setting up in the UK and EU, working seamlessly with colleagues across our network to help clients identify the unique challenges that each jurisdiction presents and putting in place the most effective business model to ensure their brand will thrive.Tax law has changed significantly over the last few years with the emphasis on international coordination to eliminate tax evasion and ensure profits are taxed where they arise through the OECD and G20 nations' BEPS project. I advise clients on the impacts of these changes which have been introduced both at an international and domestic level. The new multilateral instrument has amended double tax treaties and changed the way...

Robert Langston

Saffery

Robert is the Consultant Editor for the International Tax and Transfer pricing topic of the corporate tax module. Robert is a Chartered Tax Adviser and tax partner at Saffery Champness. He has specialised in international tax for eight years, providing UK and cross-border tax advice to larger private and smaller listed companies....

Web page updated on 22/05/2026

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