Council Tax Exemption Dementia Scotland

A dementia diagnosis does not automatically reduce your council tax in Scotland. But if the person's condition is severe enough to permanently impair their day-to-day intelligence and social functioning, the household can claim the severe mental impairment (SMI) disregard — and the savings can be substantial.

Which Conditions Qualify

The statutory test under Paragraph 2(2) of Schedule 1 to the Local Government Finance Act 1992 does not name specific diagnoses. It requires "a severe impairment of intelligence and social functioning (however caused) which appears to be permanent."

That phrase "however caused" is deliberately broad. Conditions that routinely meet the threshold include:

• Alzheimer's disease — the most common route to an SMI disregard
• Vascular dementia — including multi-infarct dementia
• Mixed dementia — Alzheimer's combined with vascular changes
• Parkinson's disease dementia and Lewy body dementia
• Severe stroke — where cognitive function is permanently impaired
• Traumatic brain injury — road accidents, falls, assaults
• Severe learning disabilities — lifelong conditions affecting intellectual and social functioning
• Other progressive neurological conditions — Huntington's disease, advanced multiple sclerosis with cognitive decline

A clinical diagnosis alone does not qualify. The condition must produce severe, permanent impairment of everyday functioning — and a doctor must certify it.

The Three Requirements

To claim the SMI disregard in Scotland, the person must meet all three conditions simultaneously:

Permanent functional impairment. The day-to-day impact on intelligence and social functioning must be severe and expected to be permanent. Dementia stage alone does not determine eligibility; the functional impact must meet the statutory test.

Medical certification. A registered medical practitioner must sign a certificate confirming the impairment. This is usually the person's GP, but it can also be a hospital consultant or memory clinic doctor. The certificate must state the date the impairment began or is likely to have begun. Under NHS GMS contract obligations, GPs are required to complete these certificates free of charge.

A qualifying benefit. The person must be entitled to one of the qualifying disability benefits. In Scotland, the key ones are Adult Disability Payment (ADP), Pension Age Disability Payment (PADP), Attendance Allowance, PIP, DLA care component (middle or higher rate), and main-phase ESA. Universal Credit qualifies only if the award includes the LCWRA or LCW element.

Entitlement is what matters — not active payment. If Attendance Allowance is suspended during a long hospital stay, the person is still "entitled" and the disregard continues.

How Much You Save

The discount depends on who else lives in the property:

• Person with dementia lives alone: full Class 23 exemption — council tax drops to zero, including water charges
• Person with dementia plus one other chargeable adult: 25% single-person discount
• Person with dementia plus a qualifying live-in carer (35+ hours/week, not a spouse): both are disregarded — 50% discount
• Both residents have dementia: full Class 23 exemption

For a Band D property in Scotland at around £1,653 per year in 2026/27, a 25% discount saves roughly £413 annually. A full exemption saves the entire bill. And because there is no statutory limit on backdating in Scotland, claims can be backdated to when all three conditions were first met — often several years, generating refunds of £1,000 or more.

Common Mistakes Families Make

Waiting for a formal diagnosis letter. The SMI certificate is separate from a clinical diagnosis. You can ask for the certificate as soon as the GP agrees the person has permanent severe impairment. Don't wait for a memory clinic appointment that may be months away.

Assuming the diagnosis is enough. The condition must be paired with a qualifying benefit. If the person hasn't yet claimed ADP, PADP, or Attendance Allowance, the first step is applying for the benefit.

Not backdating. Councils will sometimes process the disregard only from the application date. But Section 71 of the LGFA 1992 requires daily calculation — so the recalculation should go back to the exact date all three conditions first coincided. Push for the full backdated period.

Confusing SMI with Council Tax Reduction. Council Tax Reduction (CTR) is a separate, means-tested scheme. The SMI disregard is not income-tested and can be claimed on top of CTR.

Our Scotland SMI and Disability Council Tax Guide covers the full application process for every type of qualifying condition, with the backdating evidence worksheet and GP certificate templates you need to get the claim right.

See more Scotland guides →