If you have a cross-option or buy-and-sell agreement, the legal question is already settled: when your co-owner dies, you have the right to buy their shares and their estate has the right to make you take them. What almost nobody has settled is the question that actually decides whether it happens — how do surviving shareholders pay for a dead shareholder's shares? An agreement is a promise to find money. It is not money.

This is the gap that legal advice and broker advice both tend to leave open. The solicitor drafts the clause that says the sale will happen. The reader assumes that means it is funded. But a well-drafted agreement over a valuable business, sitting above owners who hold most of their wealth inside that same business, is a contract to hand over cash that none of them actually has to hand over.

So this page is about the money, not the paperwork. There are only three honest places the purchase price can come from, and it is worth being clear-eyed about all three, because the one most people are relying on without realising it is the one that is not there.

At a glance

  • A buyout agreement is an obligation to pay, not a source of the money to pay with.
  • There are three realistic sources: insurance arranged for the purpose, borrowing, or the company buying the shares back out of its own reserves.
  • Only insurance puts the money in place at the exact moment it is needed, which is the moment of death.
  • An unfunded agreement leaves the estate as a creditor and the survivors owing a sum they may not be able to raise.
  • The tax treatment of each route differs, so any plan needs both legal and tax advice before anyone commits.

The short answer: the agreement is the easy part

Drawing up an agreement to buy a dead co-owner's shares is straightforward and relatively cheap. Finding the purchase price at short notice, from people whose money is already inside the business, is neither. That inversion is why so many families end up in a stand-off that no one wanted: the survivors are contractually bound to buy, the estate is contractually entitled to be paid, and the cash to close the gap does not exist.

When there is no funding in place, the position does not simply revert to everyone walking away. The estate has a valuable asset it is entitled to realise, and the survivors have signed up to buy it. What usually follows is a negotiation carried out in grief and under pressure — instalments over several years, a discount nobody is happy with, or the family keeping the shares and becoming reluctant co-owners of a business they cannot run. None of those is the clean outcome the agreement promised.

Why an unfunded agreement is a trap, not a solution

It is worth naming the specific danger, because an unfunded agreement can be worse than no agreement at all. Where the document creates a binding obligation on both sides — the survivors must buy and the estate must sell — it can be treated for tax as a contract for sale that already existed at the date of death. That can strip the shares of business relief in the estate, turning shares that might have passed free of inheritance tax into a taxable asset, and handing the family a tax bill on top of everything else.

This is why the shares are usually dealt with by cross options rather than a single binding sale: each side holds an option to force the deal, which achieves the same commercial result without the agreement counting as a sale on the day of death. The relief itself is fragile in other ways too — a company that has built up cash it cannot justify holding can find its business relief put at risk by surplus reserves — so the interaction between the agreement, the company's balance sheet and the tax position needs to be looked at together, not one clause at a time.

Source one: insurance arranged for the purpose

This is the only source that arrives on time. Share protection is built around exactly this problem: each owner is insured, the policies are placed in trust or under a suitable arrangement, and the cross-option agreement sits alongside them. When an owner dies, the money is paid to the surviving owners — or into the structure that funds the purchase — at the point the obligation crystallises, so the survivors can pay the estate in cash and the family receives the full value promptly rather than waiting years.

Two honesty points matter here. First, cover has to be kept sized to the business. A policy arranged when the company was worth a fraction of today's value leaves a shortfall the survivors still have to find, so the sum insured needs reviewing as the business grows. Second, insurance only helps if it actually pays, which depends on underwriting and on the claim itself — worth understanding before you rely on it, whether that is how a work scheme responds to a death from cancer or the position on a death by suicide. It is also worth checking what cover already exists across the owners before arranging more, which our guide to finding out today whether cover is already in place walks through for personal policies.

Where a company pays the premiums, do not assume the cost is automatically deductible or tax-neutral; that is a judgement call in its own right, set out in why corporation tax relief on the premiums is not automatic. If there is no cover in place at all and you have just realised it, the practical next step is to get life insurance quotes and have an FCA-authorised broker size cover against the current value of the shareholding and the way the agreement is written.

Source two: borrowing the money

The second route is to borrow — either the company borrows to fund a buyback, or the surviving owners borrow personally to buy the shares themselves. It can work, but it is the route that quietly shifts the burden onto the survivors for years afterwards, and it depends entirely on a lender agreeing to advance the money at the very moment the business has lost one of the people who generated its profits.

That timing is the weakness. A death that removes a key owner is exactly the event that makes a lender cautious, so the borrowing may be smaller, dearer or slower than expected, or refused. Personal borrowing carries its own sting: owners often have to give personal guarantees, and a guarantee signed to fund a buyout is a personal liability that can reach the family home and does not disappear if things go wrong — the hard edge of that is set out in what joint and several guarantee liability means for the person left holding it. Borrowing turns a one-off problem into a monthly one, repaid out of the reduced profits of a business that has just lost an owner.

Source three: the company buys the shares back

The third route keeps the survivors out of it as buyers: the company itself purchases the deceased's shares from the estate, cancelling them, so the remaining shareholders are left owning a larger slice of a company that is now smaller by the amount of cash paid out. A private company can do this, but only by following the procedure in the Companies Act 2006 and only if it has the reserves or the permitted funding to do it.

In outline, a company buying its own shares generally needs distributable profits to fund the purchase, or must use the fresh-issue route or the more involved permitted capital procedure that private companies can use, with a directors' solvency statement and a shareholder resolution. The rules sit in Part 18 of the Companies Act 2006. The catch is the same one that runs through this whole page: a company rich in equipment, stock and goodwill but short of spare cash may not have the distributable reserves to buy anything, which sends you straight back to insurance or borrowing.

The tax treatment for the estate is where this route needs specialist care. A company purchase of its own shares is, by default, treated in a particular way for the seller, and there are specific rules that can apply where personal representatives sell a deceased shareholder's shares. Whether the estate is taxed favourably or not turns on the detail, so this is one to model with an accountant before committing, not to assume.

The three sources side by side

Set out plainly, the trade-off between the three is about when the money appears and who carries the strain afterwards.

Where the purchase price can come from
SourceWhen the money is availableMain drawback
Insurance arranged for the purposeAt the moment of death, when it is neededMust be kept sized to the business, and a claim depends on underwriting
Borrowing (company or personal)Only once a lender agrees, after the deathRepaid for years out of reduced profits; may need personal guarantees
Company buyback from reservesOnly if distributable reserves already existMany trading companies lack the spare cash; tax treatment is intricate

Read down the middle column and the pattern is obvious. Two of the three routes only produce money after the death, on terms decided by people who now see a riskier business. One produces it at the moment the obligation falls due. That is the whole argument for funding the agreement rather than merely signing it.

The valuation problem sitting underneath all three

Whichever source you use, someone has to agree what the shares are worth, and a private company has no share price to look up. If the agreement fixes a method — an independent valuation, a formula, a figure reviewed each year — that removes one fight at the worst possible time. If it does not, the survivors and the estate can end up arguing over the number before anyone even reaches the question of how to pay it.

Valuation also interacts with who ends up holding the shares if the deal stalls. Remember that inheriting shares is not the same as inheriting the right to run the company, a distinction we set out in why a will can only pass your shares and not the company itself. A family that keeps the shares because the buyout could not be funded may find they own a stake with value on paper but no control and no dividend, which serves nobody. Getting the valuation mechanism and the funding right at the same time is what avoids that outcome.

Scotland and Northern Ireland

Company law is largely a UK-wide matter, so the Companies Act 2006 rules on a company buying its own shares, and the mechanics of share transfers, apply the same way in Scotland and Northern Ireland as in England and Wales. A limited company incorporated anywhere in the UK is governed by the same Act.

What differs is the succession machinery around the estate that is selling. In Scotland the personal representatives are executors confirmed by the sheriff court, and the estate is administered under Scottish succession law; in Northern Ireland the grant process and intestacy rules differ again. Those differences affect who has authority to sell the shares and how quickly, rather than the buyout routes themselves. For the wider set of business-death questions — authority, debts, tax and structure — see our guide to what happens to a business when an owner dies.

Frequently asked questions

How do surviving shareholders pay for a dead shareholder's shares?

From insurance proceeds arranged for the purpose, from company or personal borrowing, or from company reserves through a share buyback. Each route has different tax and cash-flow consequences, and only the first puts the money in place at the moment it is actually needed. The others depend on a lender agreeing terms, or on the company having spare distributable reserves, after the death has already happened.

What if we have an agreement but no money?

Then the agreement is an obligation the survivors cannot meet, and the estate becomes a creditor waiting to be paid. Families in that position often end up accepting instalments over several years, or keeping the shares, which leaves the business part-owned by people with no role in it. It is the outcome funding is meant to prevent, and it is far easier to solve before a death than after one.

Can the company buy its own shares from the estate?

A private company can buy back its own shares if it follows the Companies Act 2006 procedure and has distributable reserves, or uses the permitted capital route with a solvency statement and a shareholder resolution. The tax treatment for the estate depends on the circumstances, and there are specific rules where personal representatives are the sellers, so this needs both legal and tax advice before anyone commits.