Mansion Tax Calculator

The High Value Council Tax Surcharge — an annual charge on England properties worth over £2 million, added to council tax bills from April 2028. Enter an estimated value to see the likely band.

This is an estimate for guidance only, not tax or valuation advice. Official valuations will be carried out separately; this tool uses your own estimate of your property's value.
Last Verified: 7 August 2026

Estimated annual surcharge (from April 2028)

Not yet in effect The High Value Council Tax Surcharge was announced in the November 2025 Budget. Valuations will be based on April 2026 property prices, but the charge itself won't appear on council tax bills until April 2028. These are 2026-price bands and will be uprated by CPI inflation each year before collection starts.

The 4 surcharge bands

Property valueAnnual surcharge
£2,000,000 – £2,500,000£2,500
£2,500,000 – £3,500,000£3,500
£3,500,000 – £5,000,000£5,000
£5,000,000+£7,500

Frequently asked questions

What is the mansion tax and when does it start?

Officially the High Value Council Tax Surcharge, announced in the November 2025 Budget. It applies to England properties valued over £2 million, based on April 2026 prices, and is added to council tax bills from April 2028.

Who pays it?

The property owner, not the occupier or tenant — so landlords are liable, not renters.

Will the bands change before 2028?

The government has said the 2026-price band thresholds and charges will be uprated in line with CPI inflation each year before collection begins.

Selling a high-value property as part of a divorce? See our Divorce Cost Calculator.