A listener of Martin Lewis has revealed how his elderly father received £5,989 back into his bank account after successfully applying for a little-known Council Tax Severe Mental Impairment (SMI) discount and getting the payments backdated.
The payout came after he heard Martin Lewis discuss the exemption on his podcast and realised his father may have been entitled to the discount for years.
Listener Explains How His Father Qualified
The story was shared on The Martin Lewis Podcast on BBC Sounds and Spotify.
A listener named Mike wrote in to say that his father, who has vascular dementia, was awarded:
- a 100% Council Tax discount
- worth over £2,000 per year
- plus almost five years of backdated refunds
In total, the local council refunded £5,989.30.
Mike said the money came at a vital time, as the family was struggling with rising care and living costs.
What the SMI Council Tax Discount Means
Martin Lewis explained that the SMI discount applies to people who have a severe loss of social functioning and receive certain disability-related benefits.
It is commonly awarded in cases such as:
- dementia
- Alzheimer’s
- severe stroke after-effects
- Parkinson’s disease
- other long-term cognitive or neurological conditions
He said the discount is “hugely under-publicised” and even some council staff are unaware of how it works.
How the Discount Affects Your Council Tax Bill
People who qualify for SMI are “disregarded” for council tax purposes, meaning they are not counted as a resident for billing calculations.
This can affect households in different ways:
- If two adults live in a home and one is SMI-qualified →
the household can receive a 25% single-person discount - If a person with SMI lives alone →
the home may qualify for 100% council tax exemption
(similar to student-only households)
Martin Lewis said thousands of families may be missing out simply because they do not know the rule exists.
Backdated Refunds Depend on Your Council
In Mike’s case, the council refunded almost five years of payments but Martin Lewis warned that backdating rules vary by area.
He explained:
- Some councils only refund part of the overpaid amount
- Others may refund several years’ worth
- In Wales, rules have been standardised
- England and Scotland do not currently have uniform guidelines
Whether someone receives a backdated refund depends entirely on:
- when eligibility began
- when the discount was claimed
- the council’s own policy
Martin Lewis Calls for Greater Awareness
Martin said the policy is poorly promoted and many eligible households are missing life-changing financial support.
He urged people with relatives who have qualifying conditions to:
- check eligibility
- contact their local council
- ask whether backdating can be applied
He described the story as “moving” and said refunds like this can dramatically ease care-related financial pressures.