The second home owners mansion tax, formally called the High Value Council Tax Surcharge (HVCTS), is due to take effect in England from April 2028. Despite the commonly used “mansion tax” label, it is not a tax aimed specifically at second homes.
It will apply to residential properties valued at £2 million or more in 2026, whether they are main homes, second homes, rental properties or properties held through certain companies and trusts.
Second-home owners could nevertheless face a particularly large overall bill because the HVCTS will sit on top of existing Council Tax and any second-home premium imposed by the local authority.
How Much Will The Mansion Tax Cost?
Under the current official design, properties will be placed into four separate HVCTS bands based on their 2026 market value.
| Property Value | Annual HVCTS From 2028 |
| £2 million to £2.5 million | £2,500 |
| £2.5 million to £3.5 million | £3,500 |
| £3.5 million to £5 million | £5,000 |
| Over £5 million | £7,500 |
These amounts are scheduled to increase with CPI inflation from 2029/30. The government plans to revalue properties every five years, with the next revaluation currently scheduled for 2033.
The surcharge will be separate from existing Council Tax. It will not replace the normal Council Tax bill and will not be calculated using the existing Council Tax bands.
This creates noticeable “cliff edges”. For example, a property valued at £2.49 million would fall into the £2,500 surcharge band, while a similar property valued at £2.51 million would move into the £3,500 band.
Why Second Home Owners Could Pay More?
Local authorities in England have been able to apply a Council Tax premium of up to 100% on second homes since 1 April 2025. This effectively allows a qualifying second home’s Council Tax charge to be doubled.
If the same property is worth £2 million or more, the HVCTS would then be added separately.
Using published Council Tax examples from Michelmores, the potential effect can be illustrated as follows:
| Example Property | Existing Council Tax | With 100% Second-Home Premium | HVCTS | Illustrative Total |
| £2.1m Bishop’s Stortford home | £4,609.20 | £9,218.40 | £2,500 | £11,718.40 |
| £5.2m Newquay home | £4,919.84 | £9,839.68 | £7,500 | £17,339.68 |
These are illustrative calculations, not government forecasts. They take Michelmores’ published Council Tax figures and assume the relevant council applies the full 100% second-home premium. Local Council Tax rates, premiums and exceptions vary.
This stacking effect is one of the main reasons second-home owners need to consider the HVCTS differently from someone who owns only a main residence.
Who Will Actually Be Liable?
The proposed rules make the legal owner, rather than the person occupying the property, responsible for the surcharge.
That means:
- Individual Owners: The registered legal owner would normally be liable
- Joint Owners: Owners would be jointly and severally liable
- Landlords: The property owner would pay even when a tenant occupies the home
- Companies: A company legally owning the property would be liable
- Trusts: Trustees would generally be liable, including where there are multiple trustees
- Long Leaseholders: Liability is proposed to sit with the leaseholder where the lease was originally granted for more than 21 years
This last point could be particularly important for expensive leasehold flats in London and other high-value areas.
The surcharge is therefore much broader than the original idea of targeting second or holiday homes. Government consultation material says more than 90% of properties valued above £2 million were owner-occupied in the underlying market-value survey.
Second Homes Will Not Qualify For The Proposed Deferral Scheme
One of the most important differences for second-home owners is access to payment support.
The government has proposed allowing some owners of a primary residence to defer their HVCTS until the property is sold. However, the consultation explicitly states that this option would not be available for second homes or company-owned properties.
For eligible main-home owners, the consultation proposes thresholds including:
- Household Income: £35,000 or less
- Capital Savings: £16,000 or less
- Disability Criteria: Certain households could also qualify under disability-related rules
The consultation considered whether meeting either the income or savings test should be enough, or whether both should be required, so the final eligibility rules are still subject to confirmation. Deferred amounts would be secured against the property and interest would apply.
Second-home owners should therefore plan on paying the charge normally rather than relying on deferral. Existing Council Tax discounts and reductions are also not proposed to be automatically replicated under the HVCTS.
How Will Properties Be Valued?
The HVCTS will not simply target homes in Council Tax Bands F, G or H. Instead, the Valuation Office will carry out a separate valuation exercise using 2026 property values.
The Valuation Office intends to use comparable sales and property information alongside a model-assisted valuation system, combining automated valuation models with professional valuer judgement. Properties with unusual characteristics or limited comparable sales evidence may receive greater individual consideration.
A draft list of properties believed to be within scope is expected in late 2027. Owners will initially be able to identify factual errors before the final list and first bills are issued.
For owners close to £2 million, £2.5 million, £3.5 million or £5 million, retaining evidence of comparable 2026 property sales and obtaining an independent professional valuation could become particularly useful.
Can You Challenge A Mansion Tax Valuation?
Yes. The proposed system includes formal challenge and appeal rights.
When the system first begins, owners are expected to have an eight-month window to challenge their HVCTS band. After this initial period, the normal challenge window would generally be six months following a new banding or change of ownership.
The Valuation Office would normally have four months to respond to a banding challenge. An owner who still disagrees could then appeal to the Valuation Tribunal.
Importantly, the bill must continue to be paid while a challenge or appeal is underway. Any overpayment would later be refunded or adjusted if the challenge succeeds.
This makes evidence especially important for properties sitting just above a band threshold.
Could Overseas Second-Home Owners Pay An Additional Premium?
Possibly, but it has not been confirmed. The consultation asked whether an additional HVCTS premium should be introduced for non-UK resident owners in high-pressure housing markets. The government has not yet announced that such a premium will go ahead.
Overseas owners should therefore distinguish between the confirmed HVCTS structure and this possible additional charge.
Non-UK buyers can already face a separate 2% SDLT surcharge, which can apply on top of the higher rates for additional residential properties.
What Exemptions Are Being Considered?
The consultation proposes exemptions or discounts for several specific types of accommodation, including:
- Student Accommodation: Purpose-built halls predominantly used by students
- Military Accommodation: Certain Ministry of Defence-owned properties
- Diplomatic Property: Qualifying accommodation owned by sovereign nations
- Social Housing: Property owned by registered social housing providers
- Care Accommodation: Certain care homes, hospices and long-term care properties
- Refuges: Property primarily providing accommodation for people escaping domestic violence
- Developer Stock: Certain newly built properties held by developers before first sale
The government has also consulted on possible treatment for tied accommodation and charities. There is no general confirmed exemption for ordinary second homes or holiday homes in the proposed list. Owners should also not assume that an existing Council Tax discount or premium exception automatically carries across to HVCTS.
What Happens If Ownership Information Is Not Provided?
Local authorities are expected to use sources including HM Land Registry to identify liable owners.
Under the consultation proposals, someone who fails to respond to a formal request for ownership information could face a penalty equal to 10% of the annual HVCTS liability after 21 days, rising to 30% after another 21 days.
Penalties could also apply where a liable person becomes aware that information concerning an exemption, discount or premium is incorrect and fails to correct it.
How And When Will The Tax Be Paid?
The first bills are expected to be issued in March 2028, ahead of the surcharge beginning in April. Local authorities would collect the HVCTS alongside Council Tax. Payments would normally be spread across 12 monthly instalments, although taxpayers could request a 10-instalment schedule.
Although councils will administer and collect the tax, government documents describe it as a national charge, with the revenue used to support funding for local government and local services.
Should Second Home Owners Sell, Gift Or Restructure Property?
A future annual surcharge should not be considered in isolation.
Selling a second home can create Capital Gains Tax consequences where the property has increased in value. Owners considering a sale should understand the rules for reporting and paying Capital Gains Tax on UK property before deciding whether avoiding future HVCTS justifies disposing of the asset.
Moving into a second property shortly before sale also does not automatically turn the entire gain into a tax-free main-residence gain. Private Residence Relief and the treatment of multiple properties can depend on genuine occupation and the property’s history.
Gifting can also constitute a disposal for tax purposes, so transferring ownership to relatives should not be treated as a simple way around the surcharge.
Corporate ownership creates additional issues. Companies owning high-value residential property can already fall within the Annual Tax on Enveloped Dwellings, which generally applies to company-owned UK residential property worth more than £500,000, subject to available reliefs.
Changing ownership purely to deal with the HVCTS could therefore create larger tax, legal and transaction costs elsewhere.
How Many Homes Could Be Affected?
The Office for Budget Responsibility modelled around 165,000 properties as being within scope in England in 2028/29 before behavioural effects.
After allowing for factors including appeals, valuation changes, price responses and other behavioural effects, the estimate falls to around 156,000 properties in 2028/29.
The government’s earlier estimate suggested annual revenue of around £430 million from 2028/29.
Those figures currently assume the £2 million structure. A reduction to £1.5 million would materially change how many homes are affected, but this remains pre-Budget speculation rather than confirmed policy.
What Should Second Home Owners Do Before 2028?
Owners of high-value second properties should focus on preparation rather than making major decisions based on headlines.
Check whether the property could realistically exceed £2 million on a 2026 valuation basis, gather evidence of comparable local sales and budget for the surcharge alongside normal Council Tax and any second-home premium.
Owners close to a threshold may also want an independent valuation once the Valuation Office publishes its draft list. Company owners, trustees, overseas owners and landlords should review who is expected to be legally liable.
Anyone considering selling, gifting or changing the ownership structure should take regulated tax or legal advice first because CGT, SDLT, inheritance tax and ATED can all affect the overall result.
Conclusion
The second home owners mansion tax is considerably clearer than when first discussed in 2025. Under the current official policy, the High Value Council Tax Surcharge will apply from April 2028 to residential properties in England worth £2 million or more, with annual charges between £2,500 and £7,500.
It is not limited to second homes, but second-home owners may experience some of the largest combined bills because the surcharge can sit alongside a Council Tax premium of up to 100%. They would also be excluded from the proposed deferral arrangement available to some qualifying main-home owners.
The next major point to watch is the 28 October 2026 Budget. Reports that the £2 million threshold could be cut to £1.5 million should be treated as speculation until the government formally announces any change.
Frequently Asked Questions
Do Second Homes Pay More Mansion Tax Than Main Homes?
The HVCTS rate itself is based on property value rather than whether the home is primary or secondary. However, a second home may also face a local Council Tax premium, increasing the combined annual bill.
Can I Defer Mansion Tax On A Second Home?
Under the current consultation design, no. The proposed deferral mechanism is limited to qualifying primary residences and specifically excludes second homes and company-owned properties.
Will Holiday Lets Be Exempt?
No general holiday-let exemption has been confirmed. Treatment will depend on the property’s legal and tax status, including whether it falls within the domestic dwelling rules.
Does The Mansion Tax Apply To Buy-To-Let Properties?
Potentially, yes. The tax is based on ownership and property value rather than whether the owner occupies the home. The legal owner would generally be responsible.
Will Overseas Owners Have To Pay?
A non-UK owner can be liable where an English residential property falls within the HVCTS rules. The government has also consulted on a possible additional non-resident premium, but this has not been confirmed.
Can I Appeal If My Property Is Valued Above £2 Million?
Yes. The proposed system provides formal rights to challenge the property’s band and ultimately appeal to the Valuation Tribunal. Owners would still need to pay while the dispute is being considered.
Does The Mansion Tax Replace Council Tax?
No. Existing Council Tax remains payable. HVCTS is an additional annual charge collected alongside it.
What Happens If I Inherit A Property Worth More Than £2 Million?
An inherited property could fall within HVCTS once the beneficiary becomes the liable legal owner. Separate inheritance tax and potential future CGT rules may also need to be considered.
Is The £1.5 Million Threshold Confirmed?
No. As of 21 September 2026, the official threshold remains £2 million. A possible reduction to £1.5 million has been reported ahead of the October Budget but has not been announced as government policy.
