A management buyout — the team that runs a business buying it from its owners — remains one of the most common succession routes for private UK companies, and for a reason: the buyers already know where everything is. There is no trade rival poring over your customer list in due diligence, no earn-out spent teaching a stranger the business, and the seller usually cares who ends up owning the thing. What an MBO is not is a soft transaction. The money still has to be found, the tax still has to be structured, and the deal still fails in the same three or four places every time.
Here is how MBOs are actually put together, and where the value leaks out.
The structure: Newco and the funding stack
Virtually every MBO uses the same skeleton: management incorporates a new company ("Newco"), Newco buys the target's shares, and the price is funded from a stack of sources because management rarely has the purchase price in cash. A typical stack, from smallest to largest:
- Management's own equity — usually modest in cash terms, but carrying most of the upside ("sweet equity");
- Vendor finance — the sellers leave part of the price outstanding as loan notes or deferred consideration, paid from future profits;
- Bank debt — term lending against the target's cash flows and assets;
- Private equity — for larger deals, an institution funds most of the price in exchange for preferred equity and a seat at the table.
The vendor-finance layer is what makes most owner-managed MBOs possible at all, and it changes the seller's risk profile fundamentally: part of their price now depends on the business performing under new ownership. Sensible sellers diligence the management team's plan the way a bank would, take security where they can, and price the deferral into the headline number.
The seller's tax position: 18% if you plan, more if you don't
For sellers, the headline is Business Asset Disposal Relief: 18% CGT on qualifying gains up to the £1 million lifetime limit, against 24% above and beyond it. The 18% rate is itself the end of a march from 10% two years ago — a reminder that waiting has been expensive lately, and that rates are on the Budget speculation list again this autumn.
Structure determines when and how the tax lands:
- Cash now is taxed now.
- Loan notes defer the gain — but the flavour matters. Qualifying corporate bonds freeze the original share gain to be taxed on redemption at whatever rate then applies — and because the QCB itself is exempt, its own collapse generally creates no allowable loss while the frozen gain survives; non-QCB notes keep the gain rolling inside the paper. The right answer depends on the exchange terms and deserves specialist eyes. Choosing between them is a genuine decision about rate risk and credit risk, not boilerplate.
- Earn-outs priced on future performance carry the Marren v Ingles trap: the right to future payments is itself an asset, taxed once up front on its estimated value and again when the cash differs — with BADR often only reaching the first slice. Elections exist to soften this where the earn-out is satisfied in shares or notes; they need claiming, not assuming.
Two HMRC clearances are standard practice before completion — under the transactions-in-securities rules and the share-exchange rules. Each addresses its own defined question (broadly, that HMRC accepts the commercial purpose and will not apply the specific anti-avoidance rule); neither is blanket approval of the deal's whole tax treatment, and neither settles valuation or relief eligibility. They are routine when the commercial purpose is genuine, and their absence is the sort of thing that makes later enquiries much harder.
The buyers' side: cheap shares are taxable shares
The management team's equity has its own trap: employment-related securities. Managers acquiring shares below market value are taxed on the discount as employment income — and "market value" in a company that has just supported a leveraged purchase price is not a trivial number. The standard protections are paying demonstrable market value for the sweet equity (structured so that is affordable) and making joint s431 elections within 14 days of acquisition — signed by employer and employee, kept with the records, not filed with HMRC — which takes future restricted-securities charges off the table in exchange for any up-front tax on the unrestricted value (a valuation question, not always small). Fourteen days means fourteen days; this is the deadline most often missed in DIY deals, and it cannot be fixed later.
Add the mundane: 0.5% stamp duty on the share purchase, and a financing structure whose interest deductibility and repayment profile the business can actually carry. An MBO loads the company with the cost of buying itself — the plan has to survive a bad year, because there will be one.
The EOT comparison — now a closer call
For several years the employee ownership trust was the tax-unbeatable alternative: sell to a trust for the workforce and pay no CGT at all. That era ended in November 2025 — relief on EOT sales is now 50% of the gain rather than 100%, alongside tightened conditions (UK-resident trustees, sellers genuinely ceding control, market-value discipline, and a longer clawback window). An EOT still usually beats an MBO on raw tax and suits owners who care most about legacy and workforce continuity; an MBO delivers committed owner-managers, external capital and — vendor finance aside — a cleaner break. Since the 2025 change the comparison is genuinely close and case-specific, which it never used to be — our EOT services page covers the other fork in detail.
What makes MBOs complete — or quietly die
The deals that close share traits: a management team that started the funding conversation before approaching the owner; a realistic price anchored by an independent valuation rather than the seller's retirement number; vendor finance with agreed security and covenants; and the tax structuring — clearances, elections, loan note terms — done alongside the negotiation, not bolted on at signing. The ones that die usually die of a price gap nobody tested early, or funding assembled too late.
Acumon advises on both sides of MBOs — deal structure, funding, valuations, clearances and the tax work — through our MBO & MBI team, with succession planning for owners weighing all the exit routes at once. If you are eighteen months from wanting this done, that is exactly the right time to start.