The new “mansion tax”: what the £2m+ council tax surcharge means for homeowners

What the High Value Council Tax Surcharge is

The High Value Council Tax Surcharge (HVCTS) is a new charge on owners of homes in England valued at £2 million or more. It was announced in the Autumn Budget and is due to take effect from April 2028. Unlike council tax, which is paid to the local authority, the surcharge is collected alongside council tax but remitted directly to the Treasury.

The charge is based on the owner’s property, not the occupier. If you own a qualifying property but rent it to a tenant, you — as the homeowner — would be liable for the surcharge even though the occupier pays council tax in the usual way.

The four surcharge bands

These figures are added on top of existing council tax, not instead of it. A homeowner in Band H — the highest existing council tax band, which applies to properties above £320,000 at the time of the original 1991 valuation — could pay well over £10,000 in combined annual property charges from 2028 if their home falls in the lower surcharge bands.

How properties will be valued

The Valuation Office Agency (VOA) will carry out targeted valuations of properties it believes may meet the £2 million threshold, rather than revaluing all homes simultaneously. Revaluations of properties brought into scope are planned every five years thereafter.

Homeowners will be able to challenge their property’s assessed value if they believe it has been placed in the wrong band. The consultation that closed on 14 July 2026 sought views on the valuation process and on potential exemptions — for example, whether there should be reliefs for long-term residents, certain property types, or situations where the surcharge would cause financial hardship.

Final rules have not yet been confirmed. The outcome of the consultation, including any exemptions that are legislated, will be set out in due course before April 2028.

Who is most likely to be affected

The approximately 165,000 homes expected to fall within scope in 2028/29 are concentrated in particular areas. Two thirds (67%) of property sales at the £2 million-plus level take place in London, with significant numbers in parts of the South East, as well as scattered high-value properties in other regions of England.

The profile of many affected homeowners is likely to be familiar to those who follow the later-life property market: long-term residents of properties that have appreciated significantly over decades, who are equity-rich but not necessarily cash-rich. A homeowner who bought in a London suburb in the 1980s for £150,000 and whose property now sits at £2.3 million is facing a £2,500 annual charge — regardless of their income or liquid assets.

“The charge applies to the property value as assessed, not the homeowner’s income. It is a fixed annual cost that does not adjust for pension income, savings, or other financial circumstances.”

Questions this raises for later-life homeowners

For homeowners approaching or in retirement who hold significant equity but have limited liquid income, a new fixed annual charge raises a straightforward question: does it change the financial logic of the choices available to you?

Options that were already in scope for many people — downsizing to a smaller or lower-value property, releasing equity from the existing home, or reviewing how property wealth fits within broader financial planning — now carry an additional variable in the calculation. A property in the £2 million to £2.5 million range may cost £2,500 more per year to own from 2028. A property above £5 million may cost £7,500 more.

That does not make any particular course of action right or wrong — that depends on individual circumstances, housing preferences, health, family situation, and financial position. But it is one more concrete data point to factor into a decision that many homeowners in this position will need to make in the next few years anyway.