The Welsh Ministers have made a narrow but important amendment to Wales's council tax exemption rules for empty dwellings. The Council Tax (Discounts, Disregards and Exemptions) (Wales) (Amendment) Regulations 2026 were made on 24 September 2026 and amend regulation 29 of the principal 2026 Regulations. Most of the changes take effect on 30 October 2026. A separate amendment to Class H, covering dwellings held for religious purposes, is deferred until 1 April 2027. For billing authorities, the instrument is mainly about clarifying how existing exemption classes are meant to work in day-to-day decisions.
According to the Explanatory Note published with the instrument, the amendments to Classes A and C are intended to clarify the position for a new owner where a dwelling has already benefited from an exemption under one of those classes. Where a person purchases a qualifying dwelling on or after 1 April 2026, that purchaser can receive a further exemption if the relevant class conditions are met, even if the previous owner's exemption has already ended. That point matters for council administration because it separates the new owner's claim from the earlier owner's exemption period. In practice, a local authority will need to assess the new claim on its own facts rather than treating the earlier exemption as having exhausted the class altogether.
The same two classes now contain a definition of purchase for transactions made on or after 30 October 2026. For these purposes, the legislation states that a purchase must be carried out at fair market value. That gives councils a clearer legal basis for refusing to treat a non-commercial transfer as qualifying for a fresh exemption under Class A or Class C. For revenues teams, advisers and conveyancers, this is likely to be one of the main working changes. A sale price, transfer documentation and the surrounding circumstances may now carry more weight where an authority is testing whether a change of ownership is a genuine market transaction.
The amendment to Class F concerns dwellings left empty after a death. The Regulations replace the English-language wording in paragraph (1)(a) so that the test clearly refers to a dwelling that has been unoccupied since the date of death of the deceased. The Explanatory Note states that this restores wording that was wrongly omitted when the 2026 Regulations were prepared for making. A further provision says that, when deciding whether a dwelling has been unoccupied for the relevant period, any single period of occupation lasting no more than six weeks must be disregarded. That is likely to matter in probate cases where a short temporary stay, for security, clearance or estate administration, might otherwise have interrupted entitlement.
Class H is amended on a different timetable. From 1 April 2027, when an authority considers whether a dwelling held for religious purposes has been unoccupied for the period required by that class, any time before 1 April 2027 must be left out of account. This gives the provision a clear starting point. For councils and religious bodies, the effect is that earlier vacancy periods will not count towards the Class H calculation once the new rule begins, avoiding retrospective carry-over from periods before April 2027.
Although the instrument is technical, its effects are practical. Billing authorities in Wales will need to update internal guidance, templates and case-handling systems before 30 October 2026, and then make a further adjustment ahead of 1 April 2027 for Class H. Evidence requirements may also become more consistent, especially where an authority needs to test fair market value or decide whether a short occupation falls within the six-week disregard in Class F. For taxpayers and professional representatives, the amendments do not create a broad new exemption scheme. They refine existing classes, correct an omission in the earlier drafting and set clearer rules for ownership changes, short occupation periods and the treatment of religious-purpose dwellings.
The legal power for the Regulations sits in section 4(3) of the Local Government Finance Act 1992, with the function now exercisable by the Welsh Ministers following the transfer of powers to devolved institutions in Wales. The instrument was signed by Elin Jones, Cabinet Minister for Finance, on 24 September 2026. The Explanatory Note also records that the Welsh Ministers' Code of Practice on Regulatory Impact Assessments was considered and that no separate impact assessment was judged necessary. That indicates the Government sees the measure as primarily clarificatory, even though its operation will still require careful implementation across Welsh billing authorities.