The 100% Council Tax Premium on Second Homes: What It Actually Catches

Since 1 April 2025, English billing authorities have had the power to charge up to 100% extra council tax — effectively doubling the bill — on furnished dwellings that are nobody's main home. For property investors sitting on a spare flat, a holiday cottage, or a unit between refurbishment and sale, that premium can turn a modest holding cost into a serious annual drag if the position isn't checked against the exemptions.

Where the power comes from and who is charging it

The Levelling-up and Regeneration Act 2023 gave billing authorities in England a new discretionary power to levy a premium of up to 100% on second homes — dwellings that are substantially furnished but are not anyone's sole or main residence — alongside the long-standing premium on genuinely empty homes. It is discretionary, not automatic: each council decides separately whether to adopt it, at what rate up to the cap, and had to give residents at least a year's advance notice before the charge could start. The result is a patchwork. Some authorities charge the full 100% from day one, some charge less, and some have not adopted it at all. The only reliable way to know the rate for a specific property is to check with the billing authority it sits in, not to assume a national rule applies uniformly.

This is a different premium to the empty homes charge

It is easy to conflate this with the older empty homes premium, which escalates the longer a property sits unoccupied and substantially unfurnished — up to 100% after a year empty, and as much as 300% once a property has been empty for a decade. See our guide to empty property business rates and council tax for how that regime interacts with development sites. The second homes premium is aimed at the opposite scenario: a property that is furnished and usable, just not lived in as anyone's main residence. A holiday cottage occupied for a few weeks a year, a pied-à-terre kept for work trips, or a flat held for a grown-up child who has moved away are all squarely in scope, even though none of them are “empty” in the ordinary sense.

The exemptions that actually matter

The regulations carve out several categories where the premium should not apply, and these are where most disputes and overlooked savings sit:

• Job-related dwellings. Properties that have to be kept because an occupation requires living elsewhere — armed forces accommodation is the classic example — are excluded.
• Annexes. A self-contained annexe forming part of, or being used as part of, the main home is treated separately from an unconnected second property.
• Actively marketed for sale or letting. A property genuinely on the market can be exempt for up to 12 months. The word doing the work is “actively” — a stale listing pulled out to defend against the premium will not survive scrutiny.
• Probate properties. Where a property forms part of an estate, the premium does not apply for up to 12 months from the date probate is granted, giving executors time to deal with the property without an extra charge landing mid-administration.
• Seasonal occupation restrictions. Properties where planning conditions genuinely prevent year-round occupation for at least 28 continuous days a year sit outside the ordinary second-home test.

None of these are automatic. Councils generally require the exemption to be claimed and evidenced, and the burden sits with the owner to show the facts fit the category — not with the council to disprove it.

Where this collides with furnished holiday lets

Genuinely commercial holiday lets have an escape route the ordinary second-home owner does not: if a property meets the Valuation Office Agency's letting test — available to let for at least 140 days and actually let for at least 70 days in the relevant year — it is assessed for business rates rather than council tax altogether, taking it out of the council tax premium's reach entirely. Small Business Rate Relief can then reduce or eliminate the rates bill depending on rateable value.

This is a genuinely different test from the one that mattered for income tax. The favourable furnished holiday letting tax regime — capital allowances, full mortgage interest relief, certain CGT reliefs — was abolished from April 2025, but the business rates letting-day test survived untouched. A property can therefore have lost its FHL income tax advantages while still avoiding the council tax premium entirely, provided the letting days are genuinely met and evidenced. Owners who assumed the two regimes moved together sometimes discover, on closer look, that only one of the two changed.

Common mistakes

• Assuming a property is exempt because it is “for sale” when the listing is inactive or priced to never sell
• Not checking whether the specific council has actually adopted the premium, or at what rate, before budgeting for it
• Treating the FHL letting-day test as abolished alongside the FHL tax regime, when the two are entirely separate rules run by different parts of the system
• Missing the 12-month clock on probate or marketing exemptions and being reassessed for the premium once the window closes
• Not appealing a council tax banding or premium decision through the proper channel before a liability order is sought

What this means for developers and investors

Anyone holding more than one furnished residential property in England — a holiday let, a second home kept between projects, or stock awaiting sale that has been dressed and furnished — should check the specific council's position rather than assume the national headline rate applies. For a genuinely commercial holiday letting business, meeting the letting-day test to secure business rates assessment is usually the more durable answer than relying on a marketing exemption that expires after 12 months. For a straightforward second home with no commercial letting intention, the premium is very often simply a cost to budget for, and it should be factored into the running-cost comparison the next time an SPV versus personal ownership decision is being modelled.

Common questions

What is the second homes council tax premium?

It is a discretionary charge English billing authorities can apply from 1 April 2025 of up to 100% extra council tax — doubling the bill — on furnished dwellings that are nobody's sole or main residence. It is separate from the long-standing empty homes premium, which applies to properties left substantially unfurnished and unoccupied.

Does every council charge the second homes premium?

No. The power is discretionary, not mandatory. Each billing authority decides separately whether to charge it, at what rate up to the 100% cap, and had to give at least a year's public notice before applying it. Coverage and start dates vary by local authority, so the position must be checked with the specific council a property sits in.

Can a furnished holiday let avoid the second homes premium?

Yes, if it meets the Valuation Office Agency's letting test — available to let for at least 140 days and actually let for at least 70 days in the relevant year — it is assessed for business rates instead of council tax, and the council tax premium does not apply at all. This test is separate from, and survived, the abolition of the favourable furnished holiday letting income tax regime from April 2025.

Is a property being actively marketed for sale exempt from the premium?

Yes, for up to 12 months, provided it is genuinely being actively marketed for sale or let. The same 12-month exemption applies to properties going through probate, running from the date probate is granted, and to job-related dwellings and annexes connected to a main home.

This article is general information, not personal tax advice, and tax rules change. Your own position depends on facts we cannot see from here — please take advice before acting on anything above.

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