Spanish property sold at loss

My wife who is British and lives in the UK sold a holiday home in Spain at a loss. Her only source of income is her pension so she doesn’t pay UK income tax. Can she still declare the loss to HMRC and use it against any future gapital gains.

Hi,
Yes, the loss needs to be calculated using values in pounds sterling and reported on the capital gains section of a Self Assessment tax return. Under the terms of Self Assessment, we do not provide an official exchange rate and the onus is on the individual to use a just and reasonable exchange rate for each acquisition and disposal. For your convenience, there are exchange rates here:
Exchange rates from HMRC in CSV and XML format
and for older rates here:
Foreign exchange rates and spot rates: 1 January 1989 to 31 March 2009
You are free to use any of the supplied rates or one of your own choosing.
Thank you.