Spin-off
Also known as: Demerger, Split-off
A group divides itself and hands shareholders both halves. Nobody buys anything and no money moves.
1 · SnapshotThe one idea to remember
2 · BeginnerWhat actually happens?
A spin-off is a company dividing itself in two. Both halves keep operating. The shareholders end up owning shares in both, in proportion to what they owned before.
Nobody buys anything. No money changes hands. If you owned one per cent of the group on Monday, you own one per cent of each half on Tuesday. In pure arithmetic, nothing has happened.
So why do it? Because the two halves may be worth more apart. Investors who wanted only one of the businesses can now buy only that one. Each half gets its own management, its own balance sheet and its own share price, and each can be judged on its own.
The work is the same untangling a sale would need: systems, staff, contracts, debt. What is different is the last step. Instead of a buyer paying, the new company is simply listed, and the shares are handed out.
- 1
Structuring3–6 mths
How the group divides, which entity holds what, and how to do it without triggering tax.
- 2
Separation work6–12 mths
The same untangling a carve-out needs: systems, staff, contracts, debt allocated between the two halves.
- 3
Documentation2–4 mths
A prospectus for the new entity and a circular asking shareholders to approve the demerger.
- 4
Shareholder vote1 day
The owners approve dividing the company they own.
- 5
Admissiondays
The new shares are distributed and start trading, usually with a period of volatility as index funds adjust.
Tax clearance — The tax authority decides. A demerger that is taxable at either level is usually not worth doing at all.
Shareholder approval — The shareholders decides. They are being asked to swap one holding for two, and some of them are mandated to hold only one of them.
Who is on the deal
| Who | Side | What they are actually for |
|---|---|---|
| The parent's board | Neither | Divides a company it does not own, on behalf of shareholders who do. |
| The shareholders | Neither | End up owning two companies instead of one, without paying or receiving anything. |
| The tax authority | Neither | Decides whether the division is taxable, which usually decides whether it happens. |
| The listing authority | Neither | Admits the new company to trading, on a prospectus written for an entity with no history. |
| The index providers | Neither | Decide which index each half belongs in, which decides who is obliged to hold it. |
- Desk
- Mergers & Acquisitions
- Buyer
- There is none
- Consideration
- Shares in the new company, to existing shareholders
- Decided by
- Shareholders, plus a tax authority
- Ends in
- Two listed companies where there was one
What decides whether it completes
Not how hard this is, and not a rating — there is deliberately no total. It says which of five blockers decides whether this transaction happens at all, in the same order on all 70 transaction types so they can be compared. This publication's own reading; see the notice below.
- Pricebarely applies
- Financingmatters
- Approvaldecides it
- Diligencebarely applies
- Executiondecides it
What decides it here. Nobody is buying anything, so there is no price to disagree about. What decides it is whether the tax authority will treat the division as tax-neutral and whether shareholders approve — and after that, whether two sets of systems and contracts can actually be pulled apart.
3 · IntermediateHow it runs in practice
The tax question decides everything
Handing shares to shareholders looks like a distribution, and distributions are usually taxable. Most jurisdictions have a relief for genuine demergers, with conditions: the businesses must be real trades, the division must have a commercial purpose, and there are usually restrictions on selling either half afterwards for a period.
A demerger that is taxable at the company level, or in the shareholders' hands, is generally not worth doing. This is why clearance from the tax authority is obtained before anything is announced, and why the structure is sometimes contorted to fit the relief.
Splitting the balance sheet
Debt has to be allocated, and it is not arbitrary. Each half must be able to carry what it is given: to service it, to refinance it, and to get a rating if it needs one. Existing bondholders may have consent rights, because the company that borrowed from them is not the company that will repay them. Sorting that out is often the longest single item on the timetable.
What happens on the first day
Index funds are the reason the first weeks are volatile. A fund tracking a large-company index that receives shares in a smaller company it is not permitted to hold must sell them, regardless of price or view. The selling is mechanical, dated and known in advance, and it frequently reverses. The mirror of this is stabilisation in a listing: a known flow, on a known date, unrelated to value.
Spin-off, carve-out, split-off
- Spin-off — shares distributed to all shareholders pro rata. Nobody chooses.
- Split-off — shareholders choose: keep the parent's shares or exchange them for the new company's. It shrinks the parent's share count, which is a buy-back in disguise.
- Carve-out — the division is sold for cash to one buyer instead.
4 · AdvancedThe numbers & the documents
Why the sum can be worth more than the whole
Three mechanisms, and only the first is about the market being wrong:
- Investor clientele. A stable cash-generating business and a fast-growing one attract different buyers with different required returns. Bundled, each is priced by investors who wanted the other. Separated, each is priced by the people who want it.
- Capital allocation. Inside a group, a division's investment is decided by a head office weighing it against everything else. On its own, it is decided against its own cost of capital.
- Visibility. A division inside consolidated accounts is a segment note. As a listed company it publishes everything, and analysts cover it.
Against that: two head offices instead of one, two listings to maintain, two sets of auditors, and the loss of whatever the businesses genuinely shared. The costs are certain and the benefits are not, which is the honest summary.
The other half of the transaction is a listing
The new company needs a prospectus, a board, a listing and an index classification. Everything on the equity capital markets desk applies, minus the money-raising. That is why a spin-off is announced by an M&A team and executed with an ECM team beside it.
Reading a demerger circular
- How the debt was allocated, and what each half's leverage looks like afterwards.
- The pro forma accounts for both halves, including the standalone costs that were previously shared — the same figure that dominates a carve-out.
- Ongoing arrangements between the two: supply agreements, shared services, trademark licences. Two companies that still need each other are not fully separated.
- Restrictions from the tax clearance, particularly any period during which either half cannot be sold without losing the relief.
That last point has a consequence worth naming: a spin-off is sometimes the first step of a sale that could not be done directly, and the restriction period tells you how long anyone would have to wait.
The formulas above are standard textbook formulations, simplified for teaching. They explain the mechanism — they are not a valuation tool, and they will not reproduce a dealer’s price.
5 · Desk notesHow people on the deal think about it
Now say it back
Close the page and give Spin-off in four sentences. It takes a minute and it is the only way to find out whether reading it was enough.
- Who wants what — name both sides and what each one is actually trying to get.
- What has to happen, in order — the three or four stages, not the whole timetable.
- Where the money comes from — cash, new shares, or borrowed; somebody has to fund it.
- What kills it — the ordinary way, not the dramatic one.
Where this transaction shows up elsewhere
- EasyWhat kills a dealAnalysisFive ways a transaction fails to happen, counted across every deal on the site — and the one that decides most of…
- MediumCarve-outDealSelling part of a group that was never a company
- MediumSum of the partsDealEach division valued separately and added up — used to argue a group is worth more apart than the market says it is…
- HardGreenshoe and stabilisationDealFor a defined period after a listing, one named bank may support the price within published limits