When the owner of a family business dies, the business itself does not usually vanish — the shares, or the trade and its assets, pass to whoever inherits them. What can undo a family is not losing the business but paying for it. If there is an inheritance tax bill, it is worked out on the paper value of the firm, and a trading business almost never holds that value in cash the family can reach. So the estate owes tax on a number nobody can spend, the tax has to be paid before the family can fully take control, and the fastest way to raise it is to sell the very thing they wanted to keep.
That is the trap this page is about, and it has a specific name in the trade: asset rich, cash poor. It is the single most common reason a family business is sold in the year after a death, and it catches people precisely because they assumed a valuable business was a safe inheritance rather than a bill waiting to arrive.
Before any of that, though, the honest first question is whether inheritance tax arises at all — because for most estates it does not, and it is worth knowing which side of that line you are on before you worry about the rest.
At a glance
- Most estates pay no inheritance tax at all. Only a small minority are large enough to be caught, so this problem is real but far from universal.
- Where it does arise, the tax is charged on the value of the business, not on cash — and a trading firm holds its worth in premises, stock, equipment and future profit.
- Business relief used to take most trading companies out of the charge entirely. From 6 April 2026 that relief is capped, so genuinely valuable firms can now leave a real bill.
- Inheritance tax generally has to be paid before probate is granted, which is exactly when the family has no access to the money.
- Cover arranged to meet the bill, or funding agreed in advance, is what lets a family keep the business instead of selling it to pay the tax.
First: does any tax even arise?
It is easy to read a page like this and assume the worst. In reality, only a small share of estates ever pay inheritance tax. In recent years the proportion of deaths resulting in a charge has been of the order of one in twenty, because an estate has to clear the available allowances before any tax is due at all.
The main allowance, the nil-rate band, is £325,000 per person, and there is a further residence nil-rate band of up to £175,000 where a home is left to children or grandchildren. Allowances can pass between spouses and civil partners, so a couple can often cover a substantial estate before tax bites. Anything above the threshold is taxed at 40%.
Source: HM Revenue & Customs, Inheritance Tax statistics, and HMRC guidance on Inheritance Tax rates and allowances, published on gov.uk under the Open Government Licence v3.0.
So the calm version of the answer is this: if the business and everything else in the estate, after allowances, comes to less than the threshold, there is no inheritance tax and no forced sale to fear. The rest of this page matters when the numbers are bigger than that — and for a genuinely valuable trading company, they often are.
Why families believed the business was safe
For decades, the reason family firms were passed down without a tax disaster was a relief now called business relief. Where it applied, it took qualifying business assets out of the inheritance tax calculation — at 100% for many trading businesses, including shares in an unquoted trading company. A family could inherit a business worth millions and, because of the relief, pay nothing on it.
Source: HM Revenue & Customs guidance on Business Relief for Inheritance Tax, published on gov.uk under the Open Government Licence v3.0.
That is the belief most owners still carry, and it is why the subject was rarely planned for. If the business qualified for full relief, the paper value did not matter, because it was wiped out for tax before any bill could form. The liquidity problem simply never surfaced, because there was no liquidity to find.
Business relief still exists and still matters. But the conditions are exacting — the business generally has to be trading rather than mainly holding investments, and cash piled up on the balance sheet can quietly put the relief at risk rather than protect it. The bigger change, though, is to the relief itself.
What changed on 6 April 2026
From 6 April 2026 the 100% rate of business relief is no longer unlimited. A single allowance of £1 million per person applies to qualifying agricultural and business property combined. Up to that £1 million, qualifying property still gets 100% relief. Above it, the relief drops to 50%.
Fifty per cent relief is not the same as being safe. It means half the value above the allowance is still taxable, and that half is taxed at the normal 40% rate — an effective charge of 20% on everything above the £1 million line. For a business worth several million pounds, that is a real, six- or seven-figure bill on an asset the family cannot readily turn into cash.
Source: HM Revenue & Customs guidance on the reform of Agricultural Property Relief and Business Property Relief for deaths on or after 6 April 2026, published on gov.uk under the Open Government Licence v3.0.
This is the change that turns a paper fortune into a live problem. A firm that would have passed tax-free under the old rules can now generate a genuine inheritance tax bill, and the family is straight into the question of where the money comes from — the same wall families hit when they are buying out a dead shareholder with no cash to do it.
The liquidity trap: a fortune you cannot spend
Here is the heart of it. A trading company's value is not sitting in a bank account. It is in the factory, the vans, the stock on the shelves, the order book, the brand and the expectation of future profit. An accountant or a valuer can put a number on all of that, and HMRC will tax the number — but you cannot post a lathe to HMRC, and you cannot pay a tax bill with next year's profit.
Worse, the cash the business does hold is usually working capital: the money that pays wages, suppliers and rent every month. Strip it out to pay a tax bill and the business stops working, which destroys the very value the tax was charged on. And the owner's own money is frozen too — sole-name bank accounts are locked the moment the bank is told of the death, and stay locked until the estate is administered. Even holdings that keep a tax advantage after death, such as an ISA that retains its shelter for a period after the owner dies, are still out of reach for spending while the paperwork catches up.
So the executors are staring at a large, dated tax demand with no obvious way to pay it. The options narrow fast: borrow against the business, if a lender will lend into that uncertainty; sell part of it; or sell all of it. The thing families are usually trying to avoid — selling the firm — becomes the only lever left, purely because of timing. It is the mirror image of the problem where a business needs cash so badly that a bank makes key person cover a condition before it lends at all.
When the bill falls due — and the one concession that helps
Timing is what makes this brutal. Inheritance tax is generally due by the end of the sixth month after the month of death, and a grant of probate is not normally issued until the tax owed on delivery of the account has been paid. That creates a genuine chicken-and-egg problem: you often need the grant to sell assets and raise money, but you need the money to get the grant.
There is one important concession for business assets. Tax attributable to certain assets — including some business property and land — can be paid in instalments, spread over ten years rather than found all at once. Interest may be charged on the outstanding amount, and the instalment option does not apply to everything, but for a family trying to hold on to a firm it can be the difference between a manageable plan and a forced sale.
Source: HM Revenue & Customs guidance on paying Inheritance Tax and paying by instalments, published on gov.uk under the Open Government Licence v3.0.
Even with instalments, though, the money has to come from somewhere every year, and it usually has to come out of the business — which is a drag on the very trade that is meant to be supporting the family. The concession buys time; it does not make the bill smaller.
How families keep the business instead of selling it
The way out is unglamorous and it has to be arranged in advance: make sure the cash to pay the bill exists outside the business, so the business never has to be broken up to raise it.
In practice that usually means a life policy arranged to meet the expected liability, most often a whole-of-life policy because the tax charge is a near-certainty at some point rather than a risk that expires. Written in trust, the proceeds fall outside the estate, so the payout does not itself add to the very bill it is meant to settle, and it reaches the family quickly rather than waiting on probate. It does not reduce the tax; it provides the money to pay it, so the executors can settle HMRC and keep the firm intact. This is a distinct need from providing for the household, and it sits alongside the cover a self-employed owner might arrange — the options we set out in whether a sole trader can have a relevant life policy.
Two other things are worth doing while there is time. The first is agreeing, in writing, who will deal with the estate and the business, because delay compounds a liquidity problem — the difficulty at the centre of what happens when a business owner dies without a will and no one is in charge. The second is getting the sums right: an FCA-authorised broker can help you size cover against a realistic valuation, and you can compare life insurance quotes as a starting point. For the whole picture of what an owner's death does to a business, our guide to what dies with a business owner gathers the related questions in one place.
Scotland and Northern Ireland
Inheritance tax is a United Kingdom tax. The allowances, the 40% rate, business relief and the £1 million cap from 6 April 2026 all apply the same way whether the deceased lived in England, Wales, Scotland or Northern Ireland. The liquidity trap does not respect borders, and neither does the reform.
What differs is the process for obtaining authority to deal with the estate. In England, Wales and Northern Ireland this is a grant of probate or letters of administration; in Scotland it is confirmation, issued by the sheriff court. Scotland also has its own rules on what a surviving spouse and children are entitled to from an estate, known as legal rights, which can affect how the value of a business is ultimately divided even though they do not change the tax. In every part of the UK, the core problem is the same: the bill is charged on value the family cannot spend, and the answer is to have the cash ready before it is needed.
Frequently asked questions
Does my family have to pay inheritance tax on the business?
It depends on whether business relief applies and how far the estate exceeds the available allowances. Most estates pay no inheritance tax at all. Where it does arise, for deaths on or after 6 April 2026 a one million pound allowance per person applies to qualifying agricultural and business property, with relief at 50 per cent on value above it — so a genuinely valuable trading business can leave a real bill even though it qualifies for relief.
When does inheritance tax have to be paid?
Broadly by the end of the sixth month after the month of death, and a grant of probate is not normally issued until the tax due on delivery of the account has been paid. Tax attributable to some business assets can be paid in instalments over ten years, though interest may be charged on the outstanding amount. The timing is what causes the trouble, because the money is needed before the family can reach the estate.
Why do families end up selling the business?
Because the tax falls due on a value nobody can spend. A trading company's worth sits in equipment, stock, premises and future profits rather than in cash the executors can reach, so the fastest way to raise the money is often to sell the very thing the family wanted to keep. Arranging the funds in advance, usually through cover written for the purpose, is what lets a family avoid that outcome.