Buy, Borrow, Die: Does It Work in the UK?

Buy, borrow, die is the strategy that explains how some of the richest people on earth pay a lower tax rate than the nurse who treats them. The idea is simple enough to fit on a napkin: buy assets that go up in value, borrow against them instead of selling, and hold on until you die, at which point the tax owed on all those gains quietly disappears. No sale, no realised gain, no capital gains tax. It is entirely legal, and in the United States it works almost perfectly.

The obvious question for a UK reader is whether the same trick works here. The answer is more interesting than a flat yes or no. Two of the three steps translate to Britain intact. The third runs straight into inheritance tax, which is the wall that America's merely-rich mostly get to walk around.

Contents

• What the buy, borrow, die strategy actually is
• Why borrowing beats selling
• Does buy, borrow, die work in the UK?
• The UK catch: inheritance tax
• What it means if you are not a billionaire

What the buy, borrow, die strategy actually is

Break it into its three verbs.

Buy. Acquire assets that appreciate: shares, index funds, property, a private business. The key feature is that they grow in value without paying out much taxable income along the way. Growth stocks that pay no dividend are ideal, because there is no annual income to tax.

Borrow. When you need cash to live on, you do not sell the assets. You borrow against them. A securities-backed loan lets you pledge a share portfolio as collateral and draw down cash at a low interest rate. A homeowner does the same thing with a remortgage or an equity release. The asset stays yours, keeps growing, and the tax on its gains stays unrealised.

Die. On death, the tax code hands your heirs a gift. In the US it is called a step-up in basis: the cost your heirs are treated as having paid resets to the market value on the day you died, so every penny of gain during your lifetime is wiped for capital gains purposes. The loans get repaid out of the estate, and the gains are never taxed. Ever.

That is the whole machine. The genius of it is that borrowing sits in the middle as a way to turn locked-up gains into spendable cash without pulling the trigger that a sale would.

Why borrowing beats selling

The reason the middle step matters so much comes down to one line in the tax code that is true on both sides of the Atlantic: a loan is not income.

If you sell £500,000 of shares that cost you £100,000, you have a £400,000 gain and a capital gains tax bill to match. If instead you borrow £500,000 against those same shares, you have received exactly the same amount of spendable cash and triggered no tax at all, because borrowed money is not a gain. You have to pay it back, with interest, but you get to choose when. And if the plan is to never sell and let death clear the slate, "when" becomes "never, out of the estate."

The maths only works while borrowing costs less than the assets grow. If your portfolio compounds at 8% and the loan costs 5%, the assets are outrunning the debt, and you can keep rolling it. This is why the strategy belongs to people with large, appreciating, diversified holdings rather than to someone with a single volatile stock. A margin call in a crash is the one thing that breaks it, so the players who use it borrow conservatively against a big base.

Does buy, borrow, die work in the UK?

Here is the part that surprises people. The UK has the same capital gains uplift on death that the US does.

Under the Taxation of Chargeable Gains Act 1992, death is not treated as a disposal for capital gains tax. Your assets pass to your estate at their market value on the date of death, and that becomes your heirs' new base cost. Every gain you built up over your lifetime escapes capital gains tax completely. If you bought a portfolio for £100,000 that is worth £1m when you die, the £900,000 gain is never taxed as a capital gain. Your children inherit it valued at £1m and only pay tax on growth from that point on.

So the "buy" and "die" steps map cleanly onto the UK. And the "borrow" step works too: securities-backed lending exists here through private banks and wealth managers, and any homeowner with equity can borrow against their house. On the pure capital-gains logic, buy, borrow, die is a British strategy as much as an American one. The current CGT rates of 18% for basic-rate taxpayers and 24% for higher-rate taxpayers are exactly what you are sidestepping by never selling.

But capital gains tax is not the only tax waiting at death in Britain.

The UK catch: inheritance tax

This is where Britain and America part ways, and it is worth being precise about why.

In the US, the federal estate tax only starts above roughly $15m per person, a threshold made permanent from 2026. Below that, an American estate pays no estate tax and gets the full step-up in basis. So for anyone with a fortune of a few million, buy, borrow, die is frictionless. The gains vanish and nothing replaces the bill.

The UK has no such generous exemption. Inheritance tax bites at £325,000 per person, or up to £500,000 once you include the residence nil-rate band for leaving a home to your children. Above that, the estate pays 40%. Those thresholds are frozen until 2030, which means that as house prices and portfolios drift upward, more ordinary estates are dragged into paying every year. A dropped charity rate of 36% applies if you leave at least 10% of the estate to charity, but the headline is brutal: the UK taxes inherited wealth at a rate that starts vastly lower than the US and catches the professional middle class, not just the ultra-rich.

So the UK deal is a trade. You dodge capital gains tax by never selling and dying with the assets, but the estate then hands 40% of everything above the threshold to HMRC. The gains-wiping half of the strategy works. The tax-free-transfer half does not.

There is a second UK-specific twist arriving soon. Until now, one wrapper let you sidestep even inheritance tax: the pension. Unused pension pots have sat outside your estate, so a well-funded SIPP could be passed on without an inheritance tax charge, which made it the closest thing an ordinary UK saver had to a personal buy, borrow, die vehicle. That door is closing. From 6 April 2027, most unused pension funds fall inside the estate for inheritance tax. The government's own figures expect around 10,500 estates to face an inheritance tax bill for the first time and roughly 38,500 to pay more. The UK is quietly filling in the one gap that let normal people play the game.

What it means if you are not a billionaire

You are not going to run a full buy, borrow, die programme on a normal income, and pretending otherwise would be selling you a fantasy. But the strategy is worth understanding for two reasons.

The first is that it tells you where the tax system is soft and where it is hard. Work is taxed heavily and immediately. Owning appreciating assets is taxed lightly and only when you choose to sell, if ever. The lesson for an ordinary earner is not to borrow against a share portfolio you do not have, but to shift as much of your financial life as possible from the taxed-hard side to the taxed-light side: own assets, hold them for the long term, and use the tax-free wrappers built for exactly this. An ISA lets you grow and sell investments with no capital gains tax at all, which is the legal, small-scale version of never paying the gain. A pension still shelters growth even with the 2027 change coming to its inheritance treatment.

The second reason is political, and it matters more than the personal one. Buy, borrow, die is not a loophole somebody forgot to close. It is the predictable result of a system that taxes income far harder than it taxes wealth, and the UK is structurally reluctant to change that. Every debate about a wealth tax or reforming capital gains runs into the same wall: the people with the most to lose have the most influence over whether it happens. When you hear that the rich pay less tax than their cleaners, this is a large part of the machinery behind it, and it is worth understanding how much UK wealth comes from owning rather than earning before you accept "we cannot afford it" as the end of the argument.

Understand the game even if you cannot play it. Then own the assets you can, hold them in the wrappers that shelter them, and vote like someone who knows how the wealthy actually pay their bills.

Frequently Asked Questions

Is the buy, borrow, die strategy legal in the UK?

Yes. Every step is legal. Borrowing against assets is a normal financial transaction, and the capital gains uplift on death is written into UK tax law. The catch is inheritance tax rather than legality: the estate still owes 40% above the threshold, which the US strategy usually avoids because its exemption is so much higher.

Do you really avoid capital gains tax by dying in the UK?

Yes, on capital gains specifically. Death is not a disposal for capital gains tax, so lifetime gains are wiped and your heirs inherit assets at the market value on the date of death. But inheritance tax may then apply to the value of the estate, so "no tax at all" is only true for very small estates.

Can ordinary people use any part of this strategy?

The useful part is holding appreciating assets long term inside tax-free wrappers rather than trading and realising gains. An ISA removes capital gains tax on investments entirely, which is the everyday version of never paying the gain. Borrowing against a portfolio to fund your lifestyle is realistically only available to people with large asset bases.

How does the 2027 pension change affect this?

From 6 April 2027, most unused pension pots count as part of your estate for inheritance tax. Until then, pensions could be passed on outside the inheritance tax net, which made a SIPP the closest thing a normal saver had to buy, borrow, die. After the change, that advantage on death largely disappears, though the pension's tax-free growth during your lifetime remains.

Why does buy, borrow, die work better in America?

Because the US federal estate tax only starts above about $15m per person, so most rich Americans pay no estate tax and still get the gains wiped at death. The UK's inheritance tax starts at £325,000, catches far more people, and takes 40% above the threshold. Same capital gains logic, very different outcome once you factor in the tax on the estate itself.

Read Next

• Capital Gains Tax UK: The Complete Guide - the rates, allowances and uplift-on-death rules that the "die" step relies on, explained in full.
• Inheritance Tax UK: The Complete Guide - the 40% catch that stops buy, borrow, die working as cleanly here as it does in America, and the reliefs that soften it.
• Why the UK Won't Tax Wealth - the political economy behind a tax system that hits earning far harder than owning.

Further Reading:

Tax-Free Wealth - Tom Wheelwright - An insider's account of how tax codes are written to reward people who own and borrow rather than people who earn a wage. Read it to understand the asymmetry, not necessarily to admire it. (Affiliate link - we may earn a small commission at no extra cost to you.)

The Millionaire Next Door - Stanley & Danko - The classic study showing that lasting wealth comes from quietly owning appreciating assets over decades, which is exactly the "buy" that the whole strategy is built on. (Affiliate link - we may earn a small commission at no extra cost to you.)