The High Value Council Tax Surcharge, from April 2028
This is not stamp duty. The High Value Council Tax Surcharge announced at the Autumn Budget 2025 is an annual charge on high value homes, levied on owners rather than occupiers, and it starts from April 2028.
It is not a property transaction tax
The surcharge is often called a mansion tax and is frequently discussed alongside stamp duty, but the two work in completely different ways. Stamp duty, LBTT and LTT are one-off taxes triggered by a transaction and paid on purchase. This is a recurring annual charge attached to the property and administered through the council tax system, payable every year the property is held and whether or not it ever changes hands. It is never added to a stamp duty calculation and it will not appear in a completion statement. Any figure combining the two is describing two different taxes.
What was announced
The charge is set at £2,500 a year for properties valued above £2,000,000, rising to £7,500 a year above £5,000,000, with effect from April 2028. It is levied on the owner of the property rather than on whoever occupies it, which is a departure from ordinary council tax and matters where a property is let or occupied by someone other than the owner. The detailed mechanics, including how properties are valued for the charge and how disputes over valuation are handled, sit with the implementing legislation and guidance rather than with the Budget announcement itself.
Why buyers at that price point care
A recurring charge attached to a property changes what it costs to hold, not just what it costs to buy. For a purchaser near the entry threshold, a valuation landing on one side of the line rather than the other creates an ongoing annual difference for as long as the property is owned. Because the charge falls on owners, it also affects landlords holding high value residential stock. Buyers in this bracket are typically already paying the top stamp duty band and, where applicable, an additional-property or non-resident loading.
What is still to be settled
An announcement is not the same as law in force. Between now and the start date the valuation approach, the treatment of properties that move across a threshold, appeal rights and any reliefs or exemptions can all be defined or changed, and the start date itself is set by legislation rather than by the announcement. Anyone making a decision that depends on this charge should work from the current published position rather than from the original Budget coverage. The page carries a verification date so you can see how recently the position here was checked.
Key points
- Not stamp duty: an annual council tax surcharge on high value homes from April 2028.
- Charged to owners, not occupiers, at £2,500 above £2,000,000 and £7,500 above £5,000,000.
- It changes the cost of holding a property, not the tax due on the purchase.
Common questions
Is this part of stamp duty?
No. It is an annual council tax surcharge on high value homes, not a one-off transaction tax, and it is never added to a stamp duty bill.
Who pays it, the owner or the tenant?
The owner. That is different from ordinary council tax, which normally falls on the occupier, and it is the point most relevant to landlords.
When does it start?
From April 2028, as announced at the Autumn Budget 2025. The start date and the detailed rules are set by the implementing legislation.
Written by StampBand Editorial, published by Inventum. Rates verified 9 August 2026 against HM Revenue & Customs, Revenue Scotland and the Welsh Revenue Authority.