Generally, any profit you make on the sale of a holiday home is taxable when you:
- bought the property and you had a firm intention to sell it
- have a history of buying and selling
- sell it within the applicable bright-line period
- or a person you're associated with are in the business of property dealing, developing or building and the propertry was bought for the business.
As it's your holiday home, it's not likely to meet the criteria to be considered your main home under the bright-line test, so will not be excluded from the rules.