Alzheimer's Council Tax Exemption in England

From Diagnosis to Council Tax Relief

An Alzheimer's diagnosis is one of the most common routes to the severe mental impairment (SMI) council tax discount in England. But the diagnosis alone does not automatically trigger the relief — two formal conditions must be met, and many families do not discover them until years after the diagnosis, leaving potentially thousands of pounds unclaimed.

The Two Conditions

Condition one: a medical certificate. A GP or consultant must certify that the person with Alzheimer's has "a severe impairment of intelligence and social functioning which appears to be permanent." This is a statutory definition, not a clinical judgment about the person's dignity or capability. Whether the statutory test is met depends on the severity of the person's impairment and the registered medical practitioner's assessment; an Alzheimer's diagnosis alone does not establish it.

The certificate is completed on the council's own SMI form, which includes a section for the doctor to sign. It must be issued free of charge under the NHS (General Medical Services Contracts) Regulations 2015. If the GP surgery asks for payment, they are wrong — statutory SMI certification is a mandatory, non-chargeable service.

Condition two: a qualifying benefit. The person must be entitled to one of the prescribed disability benefits. For older people with Alzheimer's, this is most often Attendance Allowance. For those diagnosed before State Pension age, PIP daily living component is more common. DLA care at the middle or highest rate also qualifies, as does Universal Credit with the LCWRA element.

If the person with Alzheimer's does not yet receive a qualifying benefit, applying for Attendance Allowance (or PIP, if under pension age) is the first step. The benefit application can run in parallel with the council tax claim — many families submit both at the same time and provide the benefit award letter to the council once it arrives.

What the Discount Looks Like

The discount depends on who else lives at the property:

• Person with Alzheimer's lives alone — Class U exemption, 100% removed, £0 bill
• Person with Alzheimer's lives with a spouse or partner — 25% discount (the person with Alzheimer's is disregarded, leaving the partner as the sole counted adult)
• Person with Alzheimer's lives with a spouse and an adult child — no discount (two counted adults remain)
• Person with Alzheimer's lives with another SMI-qualifying person — Class U exemption, 100% removed

Backdating After a Late Discovery

The most significant financial impact for families often comes from backdating. Council tax liability is calculated daily, and there is no statutory time limit on backdated claims. If the Alzheimer's diagnosis was made five years ago and Attendance Allowance was awarded four years ago, the discount can be backdated four years — to the later of the benefit start date and the certified onset of severe impairment.

Families routinely discover the SMI discount years after the diagnosis. A parent may have been living with advancing Alzheimer's and receiving Attendance Allowance for several years before an advice charity, social worker, or online forum mentions the council tax relief. When they do claim, the backdated refund can reach several thousand pounds.

The process for backdating requires aligning three dates: the start of residence at the property, the certified onset of severe impairment, and the qualifying benefit start date. The effective date is the latest of the three. The council must recalculate every affected financial year and issue a refund.

Councils sometimes resist backdating beyond 12 months or cite internal policies limiting refunds. These policies have no basis in primary legislation. Section 2 of the Local Government Finance Act 1992 determines liability daily with no cap, and the Valuation Tribunal for England has upheld backdated claims spanning many years where the evidence supports it.

After a Care Home Move or Death

If the person with Alzheimer's permanently moves into a residential care home, the SMI disregard at the home address ends — but a Class E exemption may apply to the now-empty property, keeping the bill at zero. And the historical period before the move is still claimable under backdated SMI relief.

If the person has died, an executor or administrator can file a backdated SMI claim for the period before death. Any refund becomes an asset of the estate.

Getting Started

If your parent, partner, or relative has Alzheimer's and receives Attendance Allowance, PIP daily living, or another qualifying benefit, they may qualify for the SMI council tax discount if a registered medical practitioner certifies that the statutory impairment test is met. The GP certificate is free, the claim form comes from the council, and backdating recovers overpayments going back to when the conditions were first met.

Our SMI Council Tax Exemption Guide covers the full process step by step — from getting the GP certificate to calculating backdated refunds and challenging any council resistance.

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