Asking for my daughter. She owns a property in Ontario with her Canadian husband who is now resident in the UK for tax purposes.
Anyone know what they are eligible to pay - property has risen by maybe $200,000 and I understand they'd pay CGT on 50% of that? Would it be added to their UK taxable incomes?
It is rented to relatives at the moment at a low rent so they aren't making money on the letting.

If their tax residency is in the UK then they’d need to follow UK tax laws on any gains

For UK capital gains tax purposes, the purchase value of the property will be currently reset to its value in 2015. The capital gain is then payable on the home's increase in value since that date. There is a calculator on the government site but for large amounts, I would use a tax accountant whose fees should for reasonable considering the aggravation it can possibly save you.

https://www.gov.uk/tax-sell-property...rseas-property