Neil O’Brien’s latest essay on Britain’s mounting fiscal fragility is not merely a critique of Rachel Reeves, it is an autopsy of a governing philosophy that has once again revealed Labour’s chronic inability to understand how wealth is created, how investment behaves, and how confidence sustains an economy long before spreadsheets do.
At first glance, Reeves’ fiscal position appears manageable. The Treasury forecasts remain technically intact. The Office for Budget Responsibility still signs off the numbers. Ministers still repeat the same soothing incantations about “stability” and “fairness”.
But as O’Brien expertly demonstrates, beneath the polished Treasury language lies something alarmingly brittle, a budget framework increasingly dependent on fantasy assumptions, soaring asset prices, and the hope that investors remain docile while being systematically punished.
The markets, unlike Labour ministers, cannot be gaslit.
When UK 30-year borrowing costs climbed to 5.76%, their highest level since 1998, markets were sending a brutally clear message. Britain’s debt trajectory no longer looks credible. More importantly, Reeves’ numbers increasingly resemble a balancing act held together with “sellotape and string”, as O’Brien memorably puts it.
He is absolutely right.
What makes his analysis so devastating is that it identifies a deeper structural flaw in Labour economics. Reeves is not merely taxing more. She is constructing an entire fiscal architecture around the assumption that asset values, property transactions, inheritances, and capital gains will continue rising indefinitely, even while her government aggressively undermines the very people and sectors that generate those gains in the first place.
This is not economic strategy. It is fiscal parasitism.
Labour increasingly behaves as though wealth simply exists naturally in the atmosphere, waiting to be redistributed by the Treasury. But capital is mobile. Investors are rational. Entrepreneurs are not livestock tethered permanently to British soil.
And once governments forget this, decline accelerates quickly.
O’Brien identifies the contradiction at the heart of Reeves’ approach with surgical precision. Labour wants vastly higher revenues from inheritance tax, capital gains tax, stamp duty, and asset-based taxation generally. Yet simultaneously it is creating a hostile environment for investors, business owners, property holders, family firms, and internationally mobile wealth creators.
The astonishing thing is that they genuinely seem surprised when those people leave.
The Financial Times report O’Brien references, showing sharp declines in prime central London property prices, should terrify the Treasury. Labour supporters may instinctively cheer falling house prices, imagining this somehow represents social justice. But economics is not morality theatre. In reality, those falling prices reflect weakening investor confidence, capital flight, and international buyers reassessing Britain as a place to store wealth.
And because Reeves has quietly built so much of her fiscal forecast around asset inflation continuing forever, any meaningful decline in those markets threatens to blow enormous holes in the public finances.
This is the part Labour never understands.
They treat wealth as static.
Conservatives, and serious economists generally, understand that wealth is dynamic, behavioural, and highly sensitive to incentives. Tax something moderately and people adjust. Tax it aggressively and people restructure. Tax it vindictively and eventually people leave altogether.
Britain has seen this movie before.
Every Labour government eventually arrives at the same destination, rising spending commitments, slowing growth, capital flight, collapsing confidence, and mounting panic as reality intrudes upon ideological fantasy. Harold Wilson ran into it. James Callaghan ran into it. Gordon Brown ran into it. Reeves now appears determined to rerun the entire script.
What O’Brien calls “fiscal fragility” is therefore much more than a technical issue. It is the inevitable consequence of an economic worldview that prioritises redistribution over production.
The most revealing section of his piece concerns the extraordinary concentration of Britain’s asset tax revenues. His Freedom of Information work on inheritance tax exposes something most voters barely realise, a tiny geographical and demographic slice of the country generates a hugely disproportionate share of these revenues.
This matters enormously.
Because when tax receipts become heavily dependent on a relatively small number of highly mobile individuals, governments become dangerously exposed to behavioural change. A few thousand departures from London’s wealthiest boroughs can suddenly create multibillion pound fiscal gaps.
Labour appears blind to this reality.
They speak endlessly about “making the rich pay their fair share”, without grasping that the rich are uniquely capable of changing jurisdiction. Capital gains can move. Investment funds can relocate. Entrepreneurs can emigrate. Family offices can rebase themselves astonishingly quickly.
And increasingly, they are doing exactly that.
There is also something intellectually incoherent about Reeves’ broader political positioning. Labour simultaneously claims Britain suffers from grotesque inequality and stagnant living standards, while also assuming asset markets will continue generating ever larger taxable gains year after year. Which is it? Is the economy fundamentally broken, or is private wealth expected to keep expanding fast enough to fund Labour’s spending ambitions?
They cannot have both.
O’Brien’s critique also exposes Labour’s almost theological faith in forecasting assumptions. The £9 billion in unspecified efficiency savings is classic Treasury fiction, spending restraint promised safely beyond the political horizon, where ministers hope nobody notices it will never happen. The Institute for Fiscal Studies was characteristically understated in pointing out governments rarely deliver such future cuts. In reality, everyone knows they almost never do.
Likewise, the assumptions surrounding welfare restraint now border on absurdity. Reeves has already lost control of her own backbenchers on benefits reform. The welfare bill is climbing relentlessly. NHS industrial action remains unresolved. Asylum accommodation costs look increasingly uncontrollable.
Yet despite all this, Labour continues behaving as though economic gravity can simply be negotiated away through optimistic spreadsheets.
It cannot.
And this is why borrowing costs are rising faster in Britain than in comparable economies. Investors are not reacting to a single event. They are reacting to a pattern, a government addicted to spending, hostile to wealth creation, dependent on fragile tax streams, and increasingly detached from economic reality.
Perhaps the most elegant point O’Brien makes is his closing observation that Reeves has effectively embarked upon a “100 mile journey with exactly 100 miles worth of petrol.”
That is precisely the problem.
Serious governments build buffers. Serious Chancellors leave room for shocks. Serious fiscal management assumes things will go wrong, because eventually they always do. Reeves instead constructed a fiscal strategy dependent on perfect conditions, permanently rising asset values, compliant investors, stable geopolitics, low behavioural response to taxation, and endlessly optimistic forecasts.
That is not prudence. It is recklessness disguised as managerial competence.
And underneath it all lies the old Labour instinct, the belief that economies can be commanded administratively from Whitehall, that incentives are secondary, that investors can be squeezed indefinitely without consequence, and that growth itself is somehow automatic.
Neil O’Brien’s essay dismantles that illusion piece by piece.
The tragedy is that Britain may now have to relearn, yet again, the lesson Labour never seems capable of retaining, you cannot tax, regulate, and punish your way to prosperity.
Read Neil O’Brien’s full article here: https://www.neilobrien.co.uk/p/asset-prices-and-fiscal-fragility
