Part of: UK Council Tax 2026 — Complete Guide to Bands, Discounts, Exemptions & Appeals → Council Tax Single Person Discount — 25% Discount Rules 2026
TL;DR: When a partner permanently moves out, the Single Person Discount (25% off your Council Tax) applies from the date they leave. Notify your billing council within 21 days. Most councils backdate SPD to the move-out date with supporting evidence. The saving is typically £400 to £600 per year at Band D. Joint Council Tax liability for debts accrued during the joint occupation period may persist.
Last reviewed: 27 April 2026
The Rule: SPD Applies from the Move-Out Date
Under section 11(1)(b) of the Local Government Finance Act 1992, the Single Person Discount applies when there is only one non-disregarded adult at the property. When your partner permanently leaves, you become the sole non-disregarded adult, and SPD applies from the date of their departure.
The SPD effective date is the actual move-out date - not the date you notify the council. This means you are entitled to SPD from day one of sole occupancy, and the council can backdate the discount to that date if you provide evidence.
You do not need to be divorced or legally separated to claim SPD. The test is purely factual: is your partner's sole or main residence elsewhere? If yes, you are the sole adult at your property and SPD applies.
Notifying the Council Within 21 Days
Under the Council Tax (Administration and Enforcement) Regulations 1992, you must notify your billing council within 21 days of a change in circumstances that affects your Council Tax liability. A partner permanently moving out is such a change.
How to notify:
1. Log into your council's online Council Tax account.
2. Find "Report a change" or "Apply for a discount."
3. Select "Single person discount" or "Change of occupancy."
4. Enter the date your partner moved out and their new address if known.
5. Upload or attach supporting evidence.
Alternatively, call the revenues team or write by email.
Getting the Date Right: What Counts as "Moved Out"
The SPD is available from the date your partner's sole or main residence became an address other than yours. The council distinguishes between:
Permanent departure: Your partner has established their main residence elsewhere - they are registered for Council Tax at the new address, have redirected their mail, updated their bank and correspondence, and are not regularly returning to stay with you. SPD applies from the date this becomes the case.
Temporary work absence: A partner who is away for work (in another city during the week, or on a long overseas posting) but whose main home remains your shared address is not "moved out" for SPD purposes.
Trial separation: If your partner has moved out temporarily with the possibility of returning, they may still have your property as their main residence. SPD in this scenario is uncertain - the council may require evidence of permanence.
Legal separation: A formal legal separation or divorce does not automatically trigger SPD - what matters is physical occupation, not legal status. If your partner is legally separated but still lives with you, SPD does not apply.
Evidence Councils Typically Request
Most billing councils require evidence that your partner has established their main residence elsewhere:
Partner's new address registration: A copy of their new Council Tax demand notice (showing they are now registered for Council Tax at another address), their new tenancy agreement, or a formal notification from their new billing council.
Redirection evidence: Mail redirection documentation, change of address notifications to banks or the DVLA.
Utility bills or bank statements: Evidence of the partner's address on financial correspondence (not your address).
Formal separation documents: While not required, separation agreements or court orders can help establish the date and permanence of the separation.
If you cannot provide the partner's new address (for example, in acrimonious separations), explain this to the revenues team and provide what evidence you have. Many councils will accept alternative evidence in domestic dispute situations.
Backdating SPD to the Move-Out Date
Request backdating explicitly. When you notify the council, state that your partner moved out on a specific date (provide the date) and ask for the SPD to be backdated to that date.
Most councils will backdate SPD to the move-out date if evidence supports it. The refund covers any Council Tax overpaid between the move-out date and the date the SPD was applied - typically credited to your account or paid by cheque.
Example: Partner moves out on 1 February 2026. You notify the council on 1 May 2026. With backdating to 1 February, 3 months of SPD (approximately 3 × £190 = £570 at Band D England average) is credited.
The Financial Implication
The SPD reduces your Council Tax by 25% from the move-out date. At the England average Band D of approximately £2,280 for 2026-27:
- Joint occupancy: £2,280/year (no discount)
- Sole occupancy with SPD: £1,710/year (25% saving)
- Annual saving: £570
For higher-banded properties or in higher-rate councils, the saving is proportionally larger.
Joint Liability for Accrued Debt
If there is unpaid Council Tax from the period when you and your partner were jointly resident, both of you may remain jointly and severally liable for that debt under section 6 of the Local Government Finance Act 1992.
"Jointly and severally liable" means the billing council can pursue either or both of you for the full amount of the debt, regardless of who was primarily responsible. This liability does not automatically end when one partner moves out.
If there is a Council Tax debt from the joint period, you should:
- Notify the council of the separation and provide the new address of the departed partner.
- Clarify with the council who is the sole liable person going forward.
- Negotiate with the departed partner (or through legal channels) about how the prior debt is to be resolved between you.
The IRRV (Institute of Revenues, Rating and Valuation) provides professional guidance to billing councils on managing joint liability situations following separation.
What "Main Residence" Means When Assessing Permanence
Billing councils assess whether a partner has genuinely moved out by asking whether the property is still their "sole or main residence" as defined in Council Tax law. This is the same test used throughout the Council Tax system.
Indicators that your property is no longer your ex-partner's main residence:
- They are registered for Council Tax at a new address.
- Their electoral roll registration has been updated to the new address.
- Their driving licence, bank correspondence, and HMRC records show the new address.
- Their broadband, utilities, or subscriptions have been transferred to the new address.
Indicators that the departure may not yet constitute a permanent change of main residence (which could undermine an SPD claim):
- The partner still receives post at your address.
- They are still on the electoral roll at your address.
- They have left belongings that they intend to collect but have not yet.
- They have not yet established a new permanent address (for example, they are in temporary accommodation or staying with family).
In contested situations, the billing council makes a factual determination. If the council is uncertain, they may request a statutory declaration or additional evidence. The MHCLG's guidance on sole or main residence for SPD purposes is the relevant reference.
Staying in the Former Family Home with Children
If you remain in the former family home with children under 18, SPD may apply even after your partner leaves. Children under 18 are disregarded for Council Tax purposes under the Council Tax (Discount Disregards) Order 1992. If you are the sole adult resident (your partner has gone and your children are all under 18), you qualify for SPD from the date your partner left.
Notify the council of the change, provide evidence of the move-out date, and apply for SPD.
Frequently Asked Questions
My partner left 6 months ago and I only just found out about SPD - can I get 6 months back?
Yes. Request backdating to the date your partner permanently moved out, providing evidence of the move-out date. Most councils will backdate SPD without a formal "good cause" requirement simply because the change occurred before you notified them. The council calculates the overpaid Council Tax and credits it to your account.
My partner and I have separated but they still visit occasionally - does SPD apply?
SPD applies if your partner's sole or main residence is elsewhere. Occasional visits (weekends, brief stays) do not re-establish your property as their main home provided their primary address is genuinely elsewhere. The key is where they sleep most nights, where their mail goes, where they are registered.
The council wants my ex-partner's new address and I don't know it - what do I do?
Explain the domestic situation to the revenues team. Many councils have a domestic circumstances process and can accept alternative evidence in separation scenarios. Provide what you have - dated messages or communications showing the separation date, confirmation of your own sole occupancy, and any evidence of their departure even without a new address.
Can I get SPD if I'm still legally married but living separately?
Yes. Legal marital status is irrelevant. The test is physical occupation: are you the sole non-disregarded adult living at the property? If your spouse's main residence is now elsewhere and only you are at the property, SPD applies regardless of whether divorce proceedings have started.
Will the council tell my partner about my SPD claim?
Billing councils do not routinely share information about SPD claims with former partners. Your Council Tax account is yours. However, in the context of financial disclosure in divorce proceedings, Council Tax demand notices (showing SPD) might be relevant and could be requested through legal channels. The council's data protection obligations govern how personal data is shared.
How we verified this
The SPD entitlement from the date of sole occupation is from section 11 of the Local Government Finance Act 1992. The joint and several liability provision is from section 6 of the same Act. The 21-day notification duty is from the Council Tax (Administration and Enforcement) Regulations 1992. The disregard of under-18 children is from the Council Tax (Discount Disregards) Order 1992. MHCLG guidance covers the SPD application process. The IRRV provides professional guidance on separation and joint liability scenarios.
Sources & Verification
- Local Government Finance Act 1992 (s6 joint liability; s11 SPD): https://www.legislation.gov.uk/ukpga/1992/14/contents
- Council Tax (Discount Disregards) Order 1992: https://www.legislation.gov.uk/uksi/1992/548/contents
- Council Tax (Administration and Enforcement) Regulations 1992: https://www.legislation.gov.uk/uksi/1992/613/contents
- gov.uk Council Tax single occupant discount: https://www.gov.uk/council-tax/discounts-for-single-occupants
- 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.
