Stamp Duty Has Had Its Day, Shadow Chancellor Tells Propertymark One

Shadow Chancellor Sir Mel Stride has told the Propertymark One conference that stamp duty on primary residences should be scrapped, calling it a "tax on aspiration" and a "disaster for the economy." In a speech that marks the clearest articulation of the Conservative party's official position on the tax, Stride cited independent modelling suggesting abolition could unlock 200,000 additional homes over a single parliament and warned that the stamp duty burden is on course to nearly double to £19 billion by the end of the decade.

For property investors, today's intervention moves the stamp duty debate from Westminster committee rooms to the conference stage. It follows last week's cross-party committee report that also called for consultation on alternatives to stamp duty. Together, the two events signal that the political momentum behind stamp duty reform is building faster than at any point in recent memory — even if a change in government would be required for this specific policy to become law.

What Stride said at Propertymark One

Speaking to an audience of almost 2,000 estate agents and property professionals gathered at the industry's flagship annual event, Stride pulled no punches. "Stamp duty is a terrible tax. It is a tax on aspiration, and it is a tax on productivity," he told delegates. "The case against stamp duty is undeniable. It is an argument that is both moral and economic."

He went further: "Not only is it grossly unfair, but it is grossly distortionary as well. It is a disaster for our society, and a disaster for our economy as well."

The central plank of the argument is economic. Stride cited modelling by the Adam Smith Institute — the free-market think tank — which suggests that abolishing stamp duty on primary residences could lead to around 200,000 additional homes being built over a five-year parliament. That represents roughly a 25% increase on current rates of housebuilding, which remain well below the levels needed to meet the government's target of 1.5 million new homes.

The proposal was first unveiled by Conservative leader Kemi Badenoch at last year's party conference. But today's speech is significant because it puts the policy front and centre of the party's economic platform, delivered at the property industry's biggest annual gathering, with the full backing of the Shadow Treasury team.

The fiscal drag problem

Stride also made a detailed case on fiscal drag — the mechanism by which rising house prices pull more transactions into higher stamp duty bands without any deliberate policy change. Since stamp duty thresholds are fixed in cash terms and house prices rise over time, an increasing share of home purchases fall into the tax net or into higher rate bands.

To illustrate the scale of the problem, he pointed to Office for Budget Responsibility forecasts showing that the total burden of stamp duty land tax will reach £19 billion by the end of the decade. That is nearly double the roughly £10 billion collected at the start of this parliament — a near-doubling of the tax take with no new legislation required.

"Last year the reliefs that had been in place were ended and stamp duty bills rose, particularly for first-time buyers," Stride said. "And while property prices rise over time, stamp duty thresholds do not. That means that more and more properties are dragged into higher rates of tax."

"That fiscal drag is essentially a massive additional tax rise by the back door. The Treasury will quietly rake in more and more, while the damaging effects on the housing market grow worse and worse."

This is a particular concern for first-time buyers, who already face the toughest affordability conditions in a generation. A record proportion now pay stamp duty — 30% — double the level a decade ago — as the nil-rate band of £250,000 has failed to keep pace with house price growth in most of the country. For context on how this interacts with the wider market, our analysis of today's Rightmove data shows how falling prices and rising supply are reshaping the buyer landscape.

What this means for property investors

It is important to be precise about what is being proposed and what is not. Stride's call is to abolish stamp duty on primary residences. The 3% surcharge on additional dwellings — the rate that applies to buy-to-let purchases — is not directly addressed in this proposal, though wider reform of the system would inevitably involve a conversation about it.

For property investors, the indirect effects are where the real story sits. A stamp duty cut on primary homes would almost certainly stimulate transaction volumes. More people moving means more chains completing, more sellers becoming buyers, and more liquidity in the market at every level. For deal sourcers and investors who sell properties as well as buy them — whether through BRRR refinancing or portfolio churn — a more liquid market is unequivocally positive.

Higher transaction volumes also tend to put upward pressure on prices, at least in the short term. That benefits existing homeowners and landlords holding assets, but it also means the window for buying at a discount could narrow if the policy shift gains credibility before it gains legal force. If you are actively sourcing deals, the possibility of stamp duty reform is one more reason to act on well-underwritten opportunities now, rather than waiting for a political outcome you cannot predict.

There is also the question of what replaces the revenue. At £19 billion annually and rising, stamp duty is not a tax any government can simply abolish without an alternative. The OBR projects the tax will generate roughly 1.7% of total government revenue by 2029 — the equivalent of the entire defence budget for a small nation. Any replacement would need to be revenue-neutral, which most likely points to reform of council tax or a new property-holding tax rather than an outright tax cut.

That is the tension at the heart of the debate. Everyone agrees stamp duty is economically damaging. Fewer people agree on what should replace it. And for property investors, the shape of the replacement matters more than the abolition itself — a shift from transaction taxes to annual holding taxes would have very different portfolio implications than a simple cut.

For a full breakdown of how the current stamp duty system affects property deals at every price point, use our stamp duty calculator to model your exact acquisition costs. And for the broader tax landscape affecting UK landlords, including CGT and corporation tax, our property tax guide for landlords 2026 covers everything you need to know.

Where this goes next

Three things determine whether today's speech becomes a footnote or a watershed moment. First, the next general election. If the Conservatives win, this policy — costed, modelled and publicly stated by the shadow chancellor — would be on the table from day one. Second, the Treasury's response to last week's cross-party committee report, which formally called for a consultation on stamp duty alternatives before the end of 2026. And third, the Autumn Budget, where the Chancellor could choose to pre-empt the opposition by launching her own review.

The direction of travel is unmistakable. The debate is no longer about whether stamp duty should change — it is about when and how. For investors who understand that transaction costs are a variable they can plan around, that is useful information. The key is to keep analysing deals on today's numbers while building enough flexibility to adapt if the rules shift.

If you would like to explore how different stamp duty scenarios affect a specific property you are considering, get in touch through our contact page or run the numbers yourself with our calculators. The best way to prepare for a policy change is to understand exactly where you stand under the current rules — because that is the baseline every reform scenario starts from.