How to reduce your council tax bill: the discounts most households never claim

Council tax is the third-largest bill for most UK households after mortgage/rent and energy. It also has the most generous list of legitimate discounts and exemptions of any major bill — and the lowest claim rate. Here is what you may be entitled to.

1. Single-person discount (25%)

If you are the only adult (18+) living in the property, you qualify. Around 8.5 million UK households claim this, but the Local Government Association estimates 350,000 single-occupant households still don't — usually because they moved in and never told the council.

Apply via your council's website. Backdating to the date you moved is standard.

2. Student exemption (100%)

A household where everyone is a full-time student pays zero council tax. A household where one adult is a student and one isn't pays the full amount minus a 25% discount.

3. Severe Mental Impairment (SMI) disregard

Probably the most under-claimed discount in the system. If anyone in the household has been medically diagnosed with a condition that causes severe mental impairment — including Alzheimer's, dementia, Parkinson's with cognitive symptoms, learning difficulties, or severe and enduring mental illness — they can be disregarded for council tax. If the disregarded person lives alone, the bill drops to zero. If they live with one other adult, the bill drops by 25%.

Diagnosis must come from a GP or specialist. The form goes via the council.

4. Disability band reduction

If the home has been adapted for someone with a disability — extra bathroom, wheelchair space, downstairs bedroom — the council can reduce the bill by one full band. (A band D becomes a band C.)

5. Carer disregard

If you live with and care for someone who isn't your spouse/partner or child under 18, and that person receives certain disability benefits, you can be disregarded as an adult for council tax purposes.

6. Empty/uninhabitable property

Properties undergoing major structural repair or that are genuinely uninhabitable can receive a 'Class D' exemption, typically for up to 12 months.

7. The band challenge

In England and Scotland, council tax bands were set in 1991. Roughly 400,000 homes are estimated to be in the wrong band. To check: compare your band to your neighbours' (any council's website lets you look this up by address). If yours is higher than equivalents, you can challenge with the Valuation Office Agency (VOA). It is free and can backdate years of overpayment. Warning: if the challenge results in the band being moved up, you cannot easily appeal.

How to claim

All of the above go through your local council's website. None require a third-party 'reduction service' — those typically charge 25–40% of your refund for paperwork you can do in 20 minutes.

Council tax is one of the rare bills where engaging with the bureaucracy actually pays. An hour of admin recovers £200–£600 a year for a meaningful percentage of households.