Severe Mental Impairment Council Tax Discount

If you or someone you care for has a severe mental impairment, you could be entitled to a 100% discount on council tax — meaning you pay nothing. Despite this being one of the most generous council tax benefits available, it’s chronically underclaimed. Millions of pounds go unclaimed every year because people don’t know this discount exists or don’t realise they qualify.

What Is the Severe Mental Impairment Discount?

In England, Scotland, and Wales, people who are severely mentally impaired are “disregarded” for council tax purposes. This means they are not counted when the council determines how many adults live at a property.

If a disregarded person lives alone, or everyone else in the household is also disregarded, the council tax bill is reduced to £0.

How It Works in Practice

The council tax system assumes two adults at a property. If one adult is disregarded due to severe mental impairment, the council treats the property as having only one adult — giving you the 25% single person discount.

But if you live alone, or if everyone else in your household is also a disregarded person (e.g. a full-time student or another person with severe mental impairment), the 100% disregard applies and you pay nothing.

Example: A couple live together. One has Alzheimer’s disease and qualifies as severely mentally impaired. That person is disregarded. The other adult is the only “counted” person. They get the single person discount (25% off). If the unaffected adult also moves out (e.g. into residential care), the disregarded person lives alone and pays nothing.

Who Qualifies as Severely Mentally Impaired?

A person qualifies if they have a permanent condition that severely impairs their intellectual or social functioning. The council will typically accept conditions including:

• Dementia (including Alzheimer’s disease)
• Severe learning disabilities (e.g. people who need 24-hour care)
• Parkinson’s disease (with cognitive impairment)
• Severe head injury resulting in cognitive impairment
• Severe stroke with lasting cognitive effects
• Advanced multiple sclerosis with cognitive symptoms
• Other conditions causing permanent, severe cognitive impairment

What Does “Severely Mentally Impaired” Mean?

The legal definition requires the person to be in a permanent state of mind that means they:

• Cannot care for themselves
• Cannot manage their own affairs
• Have a severe and permanent impairment of intellectual or social functioning

This is not the same as having a mental health condition like depression or anxiety. The condition must be permanent (or expected to be permanent) and must cause severe impairment.

Evidence Required

To prove severe mental impairment, the council typically requires:

1. A GP or consultant medical certificate confirming the condition and that it is permanent and severely impairing
2. Proof of entitlement to certain benefits (this helps but is not always required):
   • Attendance Allowance
   • Personal Independence Payment (PIP) – daily living component
   • Disability Living Allowance (DLA) – care component at the middle or higher rate
   • Incapacity Benefit (for claims before April 2001)
   • Employment and Support Allowance (ESA) – support component

If the person does not receive any of these benefits, the council may still accept a medical certificate alone — but this varies by authority. Some councils are stricter than others.

Who Can Claim?

The disregard can be claimed by:

• The person with severe mental impairment themselves (if they have the capacity to do so)
• A carer acting on their behalf (with appropriate authority, such as Power of Attorney)
• A family member who lives at the property and is responsible for the council tax bill
• Anyone who is the “liable person” for the council tax at that address

If the Person Lives Alone

If the person with severe mental impairment lives alone, the 100% disregard applies and they pay nothing.

If They Live with Others

If they live with other adults, each disregarded adult reduces the number of “counted” adults. For example:

• Two adults, one disregarded: treated as one adult — 25% discount
• Three adults, one disregarded: treated as two adults — no discount
• Two adults, both disregarded: treated as no adults — 100% discount (pay nothing)

If They Live in Residential Care

If the person with severe mental impairment has moved into a care home permanently, the property may qualify for a disregard under the rules for empty properties. Check with your local authority.

Step-by-Step: How to Claim

Follow these steps to claim the severe mental impairment council tax discount.

Step 1: Confirm Eligibility

Check that the person has a condition that qualifies as a severe mental impairment. If in doubt, ask their GP or consultant.

Step 2: Get Medical Evidence

Ask the person’s GP or consultant to provide a medical certificate confirming:

• The person’s name and address
• The diagnosis (e.g. “severe dementia”)
• That the condition is permanent (or expected to be permanent)
• That it severely impairs their intellectual or social functioning

Some councils have their own forms for this. Contact your local authority’s council tax team to ask what they require.

Step 3: Check Benefit Entitlement

Check whether the person receives (or could apply for) any of the following:

• Attendance Allowance — if they need help with personal care
• PIP Daily Living Component — if they need help with daily activities
• DLA Care Component (for children or pre-2013 claims)

If they don’t receive any of these, it may be worth applying — the medical evidence for the council tax discount can sometimes support a benefits application too.

Step 4: Contact Your Local Authority

Contact your council’s council tax team. You can usually find their contact details on:

• Your council tax bill
• Your local authority’s website (search “[council name] council tax team”)

Tell them you want to apply for the severe mental impairment disregard. They will:

• Send you an application form (if they have one)
• Tell you what evidence they need
• Explain their process and timescales

Step 5: Submit Your Application

Send the council:

1. The completed application form (if required)
2. The GP/consultant medical certificate
3. Proof of any relevant benefits (benefit award letters)
4. Your council tax account number (if you have one)

Keep copies of everything you send.

Step 6: Wait for a Decision

The council will review your application. This typically takes 2–6 weeks. They may:

• Accept the application and apply the discount
• Ask for additional evidence
• Arrange a medical assessment (rare, but possible)
• Reject the application (you can appeal)

Step 7: Receive Your Updated Bill

If approved, the council will issue a new council tax bill with the discount applied. They will also refund any overpayments — typically back to the date you first notified them (not back to the start of the financial year).

How Much Can You Save?

The savings are significant:

The biggest saving comes when the person with severe mental impairment lives alone — the entire bill is covered.

Long-Term Savings

If your household qualifies, the savings accumulate year after year:

• £1,000–£2,000 saved per year
• £5,000–£10,000 saved over 5 years
• Potentially more, as council tax increases each year

Common Mistakes and How to Avoid Them

Mistake 1: Not Applying Because You Think You Won’t Qualify

Many people assume this discount is only for people in care homes or for people on full disability benefits. It’s not. Even if the person doesn’t receive Attendance Allowance or PIP, the council may still accept a medical certificate.

Mistake 2: Not Getting the Medical Certificate

Some people apply without medical evidence and are rejected. Always get the GP or consultant letter first. It’s the most important piece of evidence.

Mistake 3: Not Telling the Council When Circumstances Change

If the person’s condition improves (unlikely with conditions like dementia, but possible with other conditions), you must notify the council. If the person no longer qualifies, the discount will be removed. If you don’t tell the council, you could be charged penalties.

Mistake 4: Not Applying for the Single Person Discount When Only One Adult Remains

If the person with severe mental impairment moves into care, the remaining adult may be the only person left at the property. They should claim the single person discount if applicable.

England vs Scotland vs Wales

The severe mental impairment disregard applies in all three countries, but there are minor differences:

Northern Ireland

Northern Ireland has a different system. The discount may apply but the rules and process are different. Contact your local council for details.

What If Your Application Is Rejected?

If the council rejects your application, you can:

1. Ask for a review — provide additional evidence or ask the council to reconsider
2. Appeal to the Valuation Tribunal — this is a free, independent tribunal. You must appeal within 2 months of the council’s decision
3. Get help from Citizens Advice, which can help you prepare your appeal

Tips for a Successful Appeal

• Get a detailed letter from the GP or consultant explaining the severity of the impairment
• Provide evidence of how the condition affects daily life
• Include benefit award letters showing the person needs care
• Explain how long the condition has been present

This Discount Is Underclaimed

Research consistently shows that the severe mental impairment council tax disregard is one of the most underclaimed benefits in the UK. Many people with dementia, Alzheimer’s, and severe learning disabilities are paying council tax they shouldn’t be paying.

If you know someone who might qualify, tell them. A five-minute phone call to the council could save them £1,000 or more per year.

Key Takeaways

• The severe mental impairment disregard gives a 100% council tax discount
• It applies to people with dementia, Alzheimer’s, severe learning disabilities, Parkinson’s, and other qualifying conditions
• You need medical evidence from a GP or consultant
• The discount is worth £1,000–£2,000 per year or more
• You can apply at any time — it’s free and the process is straightforward
• If you’ve been paying council tax while someone in your household qualifies, you may be able to claim a refund

Don’t assume this doesn’t apply to you or your family. If someone in your household has a severe mental impairment, contact your council today.