Holiday-let investors are being warned not to base purchasing decisions on peak-season nightly rates, as a shifting tax and regulatory landscape adds complexity to short-term letting across the UK.
The warning comes as searches for 'holiday-let tax' have risen 300% over the past month, coinciding with debate over Wales' 182-day occupancy threshold and the introduction of a 5% overnight visitor levy in Edinburgh from 24 July 2026.
Cardiff is preparing to follow with its own visitor levy from 1 April 2027, charging £1.30 per person per night for most accommodation and 75p for campsites, pitches and shared accommodation.
Laura Dubois, a holiday-home specialist at Together Travel, said: "The biggest mistake a prospective holiday-let owner can make is looking at the headline nightly rate and assuming that tells you whether a property is a good investment.
"Holiday lets are seasonal businesses, and their profitability depends on much more than the price you can charge for a week in August.
"With the regulatory landscape changing, owners should be looking at the full picture, including occupancy, local demand, taxation, running costs and how future policy changes could affect the property."
Dubois is advising investors to assess annual occupancy rather than peak-season figures, particularly in destinations where demand is highly seasonal. In Wales, self-catering properties have generally needed to be available to let for at least 252 days and actually let for at least 182 days in a 12-month period to qualify for non-domestic rates rather than council tax. A current Senedd petition is calling for the 182-day threshold to be reduced to 105 days.
On taxation, she said: "Tax should be part of the initial property research, not something you investigate after you've bought the property. If you're looking at a holiday let as a business, you need to understand what classification the property could fall under and what requirements you'll need to meet."
Dubois also flagged the spread of visitor levies as a consideration for prospective buyers, noting that the local policy environment could affect both pricing and income forecasting. "A visitor levy doesn't necessarily make a destination less attractive, but it is another cost and administrative consideration for operators.
"Anyone considering buying should understand whether a levy applies, when it is coming into effect and how it will be collected before building their financial projections around a property."
On the question of regulatory risk more broadly, she added: "Nobody can predict exactly what the holiday-let landscape will look like in five or ten years, so I wouldn't recommend buying a property based on one very specific tax assumption.
"Build some flexibility into your calculations. If the property only works financially under the most optimistic occupancy figures and the most favourable tax treatment, that should be a warning sign.
"A strong holiday-let business should be able to stand up to some change."
