Counter
Charity nights are counted up to 14 for each period. Only nights donated on or after 1 April 2026 count.
An estimate against the rule as published on gov.uk, read 23 October 2026. A Welsh Government consultation on lowering the letting threshold closed on 23 October 2026, with any change intended from 1 April 2027. The Valuation Office decides. This is a guide, not legal or tax advice.
Several lets at the same place can be averaged together; this counter does one property at a time. See Business Wales for that.
The rules in the sources' own words
The tests
Source: gov.uk, "Apply for business rates for a self-catering property in Wales". Read 23 October 2026.
- "your property was available to let commercially (with the intention of making a profit) for at least 252 nights within a 12 month period"
- "your property was actually let commercially for at least 182 nights within the same 12 month period"
- "you intend to make it available to let commercially for at least 252 nights in the following 12 months"
Averaging and charity nights
Source: gov.uk, same guidance. Read 23 October 2026.
- "From 1 April 2026, you can use the average number of nights you let your property over the previous 24 or 36 months."
- "The average must be at least 182 nights let in each 12 month period."
- "From 1 April 2026 you can also include up to 14 nights per year where you have donated the use of the property to a registered charity."
Nights that don't count
Source: gov.uk, same guidance. Read 23 October 2026.
- Under the heading "If a stay lasts more than 28 nights:" the guidance says "those nights do not count towards the 182 nights your property must be let"
- In the guidance's list of nights you cannot include: "nights you were using the property privately, including letting it to friends or family for a discounted rate"
Checks
Source: Business Wales, "Non-domestic rates: self-catering properties in Wales". Read 23 October 2026.
- "The VO’s target is to check the status of each self-catering property at least once every two years."
- "A property found not to be meeting the criteria following reassessment may be moved to the council tax list at any time, including in respect of previous years."
Keeping your nights through the year
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