Mansion Tax – What is it really all about!

March 6, 2026

The Autumn Budget held in 2025 introduced the High Value Council Tax Surcharge (HVCTS), more commonly dubbed as the ‘Mansion Tax’ which is due to take effect from April 2028 and is aimed at high-value residential property owners in England.  As it currently stands, Mansion Tax will apply to homes valued over £2 million based upon a 2026 valuation (Please note, the process for determining this has not yet been published).

How will the Mansion Tax bands work?

The HVCTS will be split into four surcharge bands (a) £2m-£2.5m – levying a £2,500 charge (b) £2.5 – £3.5m – levying a £3,500 Chage (c) £3.5m – £5m – levying a £5,000 Charge (d) over £5m – levying a £7,500 Charge. The surcharge is due to increase yearly in line with the Consumer Price Index (CPI).  The current Government estimates that around £0.4 billion will be generated by 2029-2030.

Why has the Mansion Tax been introduced

The Mansion Tax seeks to increase Council Tax receipts upon the higher-value properties in England and marks a significant change to the Residential Property tax system.  The rationale is to make the system fairer by making those with more valuable homes contribute more, with the view to addressing wealth inequality.  

Will the Mansion Tax hit everyone?

No is the short answer, as it stands, the Mansion Tax will only have an impact on the price banding noted above in this article.  It is important to note that under the current proposals that the Tax will be levied regardless of whether you reside in that property or whether you derive an income from that property. 

How will the Mansion Tax impact the Residential Property Sector?

Until the Mansion Tax is fully implemented it is difficult to know, however those owning homes worth £2m or more will certainly fact material ongoing costs which could have a serious impact on quality of life, renovation plans and even a possible sale.  It appears that the greatest concentration of properties which hit this threshold are in London and the South-East. Whilst there is a serious concern for those in England who might own a Property or looking to buy, there is also a great concern that this could impact foreign investors looking to purchase in the United Kingdom and therefore must ensure that they factor this surcharge into whether purchasing in the UK is beneficial or not – which could potentially drive foreign investment away from the UK Property market and economy.

Conclusions:

The Mansion Tax is more than just a standard tax; it is a structural shake-up in how Residential Properties are taxed and how those with the ‘’broadest shoulders’’ should be contributing more to society.  Whether you agree or not with the implementation, under its current proposals the Mansion Tax will be here in 2028 and here to stay and whilst it is likely to have a direct impact on a small amount of individuals, the broader valuation impacts and market behaviours could be felt throughout the market.  The degree of how much this will impact the Residential Sector will only become clearer as valuations and the implementation process commences in the coming months and years.

How can we help

If you are considering selling a property valued at over £2 million, or want advice on how the Mansion Tax may affect you, please contact us. Our specialist team can help you plan ahead and protect your interests.

Dominic Coleman
Senior Solicitor, Residential Property
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This reflects the law and market position at the date of publication and is written as a general guide. It does not contain definitive legal advice, which should be sought in relation to a specific matter.

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