Published: 11 November 2026
The Chancellor's first Budget left stamp duty alone and confirmed the shape of the so-called mansion tax. For buyers and owners at the top of the market, the headline is clarity rather than shock.
After two Budgets that reshaped the tax landscape for wealthy and internationally mobile families, John Healey's first statement as Chancellor on 28 October was, by design, a quieter affair. Framed around giving the economy "breathing space", it trimmed the government's fiscal buffer to around £15 billion and drew barely a reaction from gilt and currency markets. For the prime residential market, which has spent much of the past two years pricing in political risk, a quiet Budget is not the same as an unimportant one.
Stamp Duty: No Change, For Now
The most consequential decision was a non-decision. Stamp duty rates, thresholds and the 5% surcharge on additional homes were left untouched, as the Prime Minister had signalled over the summer. That will disappoint those who argued for reform: recent research published days before the Budget estimated that sales of English homes above £5 million had fallen by 14%, at a cost of roughly £541 million in lost receipts. Yet for buyers and sellers who paused ahead of the statement, the certainty that moving costs will not rise in the near term is itself valuable. Wider property tax reform has been deferred to the government's 10 Year Plan and the 2027 Spending Review.
"Clients have spent much of this year waiting for a clear signal, and this Budget provides one," says Alex Isidro, Managing Director of United Kingdom Sotheby's International Realty. "Leaving stamp duty unchanged is not the reform many had hoped for, but it gives buyers and sellers the confidence to plan. We expect conversations that were put on hold over the summer to resume quickly."
The High Value Council Tax Surcharge Takes Shape
The High Value Council Tax Surcharge, first announced in November 2025, is now confirmed in detail. From April 2028, owners of homes in England worth £2 million or more, based on April 2026 values, will pay an annual charge on top of ordinary council tax:
- £2m–£2.5m: £2,500
- £2.5m–£3.5m: £3,500
- £3.5m–£5m: £5,000
- £5m and above: £7,500
Charges will rise with CPI from 2029–30. Liability sits with the legal owner rather than the occupier, so owners who let their homes will pay. Rumours of a lower £1.5 million threshold proved unfounded. A deferral scheme will help owners with modest incomes or savings, and bandings can be challenged at the Valuation Tribunal. More pointedly, homes left substantially unfurnished and unoccupied for 12 months or more will face a 100% premium, a clear signal aimed at lock-up-and-leave ownership.
For most buyers at this level the sums are modest: £7,500 a year is a fraction of the stamp duty on a £5 million purchase. The bigger effect is likely to be on pricing around the band boundaries, with one University of Warwick economist estimating a capitalised impact of around 2–3% on a £2.5 million home. Expect sharper negotiation where a property sits just above a threshold, and sellers would be wise to assemble robust valuation evidence well ahead of the Valuation Office's banding exercise.
"For most of our clients, the surcharge is a known and manageable cost rather than a deterrent," says Isidro. "Where it will matter is at the margins, particularly for homes valued just above a band threshold. Accurate, well-evidenced valuations will be more important than ever."
Wealth Taxes: Largely Left To Settle
For UHNW families, the story is what did not happen. There was no wealth tax, no exit tax and no rise in the main rates of capital gains tax. Inheritance tax rates and the £325,000 nil-rate band are unchanged, and the four-year foreign income and gains regime that replaced non-dom status in April 2025 was left intact, although the government will keep the residence-based system under review. A new 10% capital gains rate for qualifying founders and early investors, on up to £10 million of lifetime gains, sends a welcome signal to entrepreneurs.
There were narrower tightenings. Rules on when trust liabilities can reduce the value of an estate have been strengthened with immediate effect, and previously announced changes continue on schedule: the £2.5 million cap on full agricultural and business property relief from April 2026, and unused pensions falling within inheritance tax from April 2027.
Landlords And Corporate Owners
Investors face a further two-percentage-point rise in property income tax from 6 April 2027, taking rates to 24%, 44% and 49%. The Annual Tax on Enveloped Dwellings rises by 3.5% in line with inflation. Meanwhile, HMRC is stepping up its scrutiny of the wealthy, pledging 400 additional specialists by 2030 and signalling participation in an OECD framework for automatically exchanging information on property holdings with other countries. Transparency, rather than new taxes, is the direction of travel.
What It Means For The Market
The 2026 Budget offers what the prime market has lacked: a stable set of rules for the period ahead. The cost of owning a £2 million-plus home in England is now known, the international tax regime is unchanged, and the worst-case scenarios have receded. That combination tends to release pent-up demand, particularly from domestic buyers and international purchasers who have been waiting for clarity.
"London and the finest homes across the English countryside remain globally sought after," says Isidro. "What international buyers value above all is predictability. With the rules for the next few years now largely set, we are telling clients that this is a sensible moment to act."
The caveat is that the government has deferred, not abandoned, the bigger questions about property and wealth taxation. For clients planning a purchase, sale or restructure, the sensible course is to act on the certainty available now, while taking specialist tax advice on longer-term holdings.
