Part of: UK Council Tax 2026 — Complete Guide → Council Tax Disability Help 2026 — DBRS, SMI, Carer Discount Guide
TL;DR: When a disabled relative moves into your home, several Council Tax reliefs may become available: the disabled person may be disregarded under SMI or similar provisions; the property may qualify for the Disabled Band Reduction Scheme if it has qualifying adaptations; you may qualify for the carer disregard if you provide 35+ hours of care per week. These reliefs can combine to save £500 to £1,000 or more per year.
Last reviewed: 27 April 2026
What Changes When a Disabled Relative Moves In
When a disabled relative moves into your home, several Council Tax implications follow:
The disabled person is now a resident. They may be counted as a non-disregarded adult (which typically ends any existing Single Person Discount you were receiving), or they may be disregarded under specific disability provisions (which preserves or enables discounts).
The property may now qualify for DBRS. If the disabled relative requires adapted space - a downstairs room, an extra bathroom, or indoor wheelchair access - the property may qualify for the Disabled Band Reduction Scheme.
You may qualify for the carer disregard. If you become the primary carer for your relative, providing 35+ hours per week of personal care, you may be disregarded as a carer.
The net effect depends on the specific circumstances, but in many cases the combination of reliefs can more than offset any loss of SPD.
The SMI Disregard: Is the Relative Disregarded?
The first question to ask when a disabled relative moves in is whether they qualify as severely mentally impaired (SMI). This applies where:
- The person has a severe and apparently permanent impairment of intelligence and social functioning (caused by dementia, learning disability, stroke, brain injury, Huntington's, or similar)
- They are certified as SMI by their GP or specialist
- They receive a qualifying benefit (Attendance Allowance, PIP daily living at either rate, DLA middle or highest care, ESA support component, or Universal Credit LCWRA)
If your relative qualifies as SMI, they are disregarded for Council Tax purposes under the Council Tax (Discount Disregards) Order 1992. They are effectively invisible to the Council Tax system. This means:
- Your household's adult count does not increase when they move in
- Your existing Single Person Discount (if you were previously the sole adult) is preserved
- If only you and the relative are in the household (and they are SMI), you remain the sole non-disregarded adult with SPD
If the relative qualifies as SMI AND you qualify as their carer (see below), both of you may be disregarded - potentially enabling Class U exemption (zero Council Tax).
The DBRS: Does the Property Now Qualify?
If your disabled relative needs adapted space, the property may qualify for the Disabled Band Reduction Scheme. The qualifying features are:
1. A room (other than bathroom, kitchen, or lavatory) predominantly used by the disabled person and required for their needs - for example, a downstairs bedroom set up for the relative because they cannot access the upper floor
2. A second bathroom or kitchen required for the disabled person's needs - for example, a wet room or adapted bathroom
3. Sufficient indoor floor space for wheelchair use
Applying for DBRS: Contact the billing council and apply online or by phone. Evidence typically required: a description of the qualifying feature, photographs, and possibly an OT report. There is no time limit - DBRS applies as long as conditions are met.
Financial value: At the England average Band D of approximately £2,280, DBRS reduces the charge by approximately £253/year for Bands A to D properties.
The Carer Disregard: Are You Disregarded?
If you are providing at least 35 hours per week of personal care to your disabled relative (not as their spouse or civil partner), you may qualify for the carer disregard under the Council Tax (Discount Disregards) Order 1992.
Requirements: Your relative must receive Attendance Allowance (higher rate), DLA middle or highest care component, or PIP daily living at the enhanced rate. You must provide 35+ hours/week of care. You must live with the relative at the same property. You must not be their spouse, civil partner, or the parent of a child under 18 for whom you have parental responsibility.
Effect: You are removed from the resident adult count. Combined with the SMI disregard for the relative, this can leave zero non-disregarded adults - triggering Class U full exemption (zero Council Tax).
The Granny Annexe Scenario
If your disabled relative moves into a self-contained annexe attached to your home, different rules apply:
Class T exemption: An annexe that cannot be let separately from the main property (because planning conditions prohibit it or it is physically inseparable) may qualify for Class T exemption under the Council Tax (Exempt Dwellings) Order 1992.
Class W exemption: An annexe occupied by a dependent relative of the person living in the main dwelling qualifies for Class W exemption. A "dependent relative" includes a person aged 65 or over, or someone who is substantially and permanently disabled, or someone who is severely mentally impaired.
Section 11A discount (50% off the annexe): Under section 11A of the Local Government Finance Act 1992, where an annexe is occupied by a relative (any relative, not just dependent relatives), the Council Tax for the annexe is reduced by 50%.
These provisions can significantly reduce the Council Tax on annexe accommodation for disabled relatives.
Financial Summary: What Relief Combination Looks Like
For a Band D property where a disabled relative (SMI, receiving AA higher rate) moves in with you as their non-spouse carer providing 40 hours/week of care:
- Standard Band D charge: approximately £2,280/year
- DBRS (adapted wet room installed): Band C rate = approximately £2,027/year
- SMI disregard (relative disregarded) + Carer disregard (you disregarded): no non-disregarded adults remain
- Class U exemption applies: £0/year
Annual saving from full relief: approximately £2,280 (versus the pre-relative standard charge). The financial case for claiming all applicable reliefs is compelling.
How to Apply for Multiple Reliefs at the Same Time
Each Council Tax relief requires a separate application to the billing council. However, most billing councils have streamlined their online portals to allow multiple applications in a single session:
DBRS: Find "disability" or "disabled person" under discounts and exemptions on the council's website. Complete the DBRS form with description of the qualifying feature and any supporting OT report.
SMI Disregard: Find "severely mentally impaired" or "SMI" in the discount/exemption section. Submit the GP certificate and qualifying benefit award letter.
Carer Disregard: Find "carer" in the discount/exemption section. Submit a declaration of care hours and the cared-for person's benefit award letter.
CTR: This is typically a separate longer form requiring full income and household evidence.
Contact the revenues team if you cannot navigate the online portal - most councils will process applications by phone or post a paper form. Ask the revenues team to review all applicable reliefs for your household composition in one call.
Frequently Asked Questions
My elderly father moved in with us - does our Single Person Discount end?
It depends on whether your father is disregarded. If he qualifies as severely mentally impaired (dementia is common) with GP certificate and qualifying benefit, he is disregarded and your SPD is preserved (you remain the sole non-disregarded adult, assuming no other adults). If he does not qualify as SMI, he becomes a non-disregarded adult and SPD ends.
We installed a downstairs bedroom for my disabled mother - does DBRS apply immediately?
DBRS applies from the date the qualifying feature was first used for the disabled person's needs. If the downstairs bedroom was set up and first used immediately after your mother moved in, DBRS applies from that date. Apply to the billing council and request backdating to the qualifying date.
My disabled brother is moving in - he has PIP but not the enhanced daily living rate. Does this affect what reliefs I can claim?
PIP standard daily living qualifies for the SMI dual test (if the GP also certifies SMI), so the SMI disregard may still apply. However, the carer disregard requires PIP enhanced daily living (or AA higher rate) - standard rate PIP does not qualify for the carer disregard. This means you may still qualify for the SMI disregard for your brother (if SMI conditions are met) but not the carer disregard for yourself.
The granny annexe has its own Council Tax band - does Class W apply?
If your disabled relative (who qualifies as a "dependent relative" under the definition) occupies the annexe and you live in the main dwelling, Class W exemption applies to the annexe. The annexe pays no Council Tax. The main dwelling's Council Tax continues at the standard rate for your household.
We want to adapt our home before my relative arrives - should we apply for DBRS now?
DBRS applies from when the qualifying feature is present AND a qualifying disabled resident is living at the property. If you install a wet room before the relative arrives, the feature is present but no qualifying disabled resident is yet in the household. The DBRS eligibility begins when your relative moves in (assuming the wet room is required for their needs).
How we verified this
DBRS is from the Council Tax (Reductions for Disabilities) Regulations 1992 and section 13 of the Local Government Finance Act 1992. The SMI disregard is from the Council Tax (Discount Disregards) Order 1992. The carer disregard is from the same Order. Class T and Class W exemptions are from the Council Tax (Exempt Dwellings) Order 1992. The section 11A annexe discount is from the Local Government Finance Act 1992. MHCLG guidance covers annexe and dependent relative provisions. The IRRV provides professional guidance on DBRS and disregard interactions.
Sources & Verification
- Council Tax (Reductions for Disabilities) Regulations 1992: https://www.legislation.gov.uk/uksi/1992/554/contents
- Council Tax (Discount Disregards) Order 1992: https://www.legislation.gov.uk/uksi/1992/548/contents
- Council Tax (Exempt Dwellings) Order 1992 (Class T, W): https://www.legislation.gov.uk/uksi/1992/558/contents
- Local Government Finance Act 1992 (s11A annexe discount): https://www.legislation.gov.uk/ukpga/1992/14/contents
- gov.uk Council Tax discounts: https://www.gov.uk/council-tax/who-has-to-pay
- MHCLG Council Tax guidance: https://www.gov.uk/government/collections/council-tax-statistics
- IRRV (Institute of Revenues, Rating and Valuation): https://www.irrv.net/
This article is for informational purposes only and does not constitute legal, financial, or tax advice. Council Tax rules vary by local authority and change annually. Always verify current rates and rules with your local council and gov.uk before making any decision.
