From Buyers to Sellers: The Stamp Duty Shake-Up No One Can Ignore

 

The UK housing market could be heading for one of its biggest tax reforms in decades. In August 2025, the Treasury confirmed it is reviewing Stamp Duty Land Tax (SDLT), the upfront charge buyers currently pay when purchasing a home, and is considering replacing it with a new seller-based property tax. 

 

 

Under the proposals, buyers of higher-value homes would no longer face SDLT. Instead, sellers would be taxed when they sell: 

 

0.54% on homes priced between £500K–£1M 

 

0.81% on homes above £1M 

 

Crucially, this would only affect about 20% of transactions, compared with around 60% under today’s SDLT rules. 

 

 

For years, SDLT has been criticised as a “tax on moving.” It discourages people from selling up or downsizing and makes it harder for first-time buyers to get onto the ladder. By scrapping or reducing the upfront cost for buyers, the government hopes to: 

 

Unlock tens of thousands more property transactions each year 

 

Improve labour mobility, as people move closer to jobs 

 

Encourage a healthier, more dynamic housing market 

 

 

Like all tax changes, there will be winners and losers: 

 

Winners: First-time buyers, upsizers, and movers who would no longer face large upfront costs. Property values could also rise slightly, as affordability improves. 

 

Losers: Sellers of high-value homes, particularly in London and the South East, who will shoulder the new charges. Older homeowners may feel unfairly targeted if they’re cash-poor but property-rich. And those who already paid SDLT in recent years may feel stung by a new seller levy. 

 

 

With reforms like these on the horizon, understanding the financial impact of property taxes has never been more important. At JSB Accountants, we specialise in guiding homeowners, landlords, and investors through complex tax changes. From strategic planning to minimise liabilities, to advice on future sales or inheritance planning, we’ll help you make the smartest financial decisions. 

 

👉 If you’re considering buying or selling a property, or simply want clarity on how these changes could affect you, get in touch with JSB Accountants today for expert, personalised advice. 

 

 

Nothing is confirmed yet. These proposals are under review and are expected to be discussed in detail in the Autumn Budget. Alongside this, the government is also exploring council tax reform, with some calling for a complete overhaul of property taxes to make the system fairer and more stable in the long term. 

 

 

If adopted, this reform would represent a fundamental shift in how Britain taxes property, moving the burden from buyers at the start of the journey to sellers at the end. Whether it truly makes the market more accessible, or simply shifts the problem from one side of the transaction to the other, will be the real test.