Non-resident CGT and reporting on UK REIT sales

Hello. I'm an EU-based, non-UK resident and non-UK citizen with holdings in Supermarket Income REIT, a UK-domiciled REIT that owns commercial property. From what I gather, if at some point in the future I were to close my position in this REIT, I would be required to report this sale and pay HMRC tax on any capital gains (as I would be disposing of an interest in a UK property rich collective investment vehicle). However, after checking the HMRC website, I've been unable to find any specifics on: 1) exactly how I should report it (i.e. a standard self-assessment, a non-resident Capital Gains Tax return, some other specific form, etc.); and 2) exactly when I should report it (after the end of the tax year, within 30 days of the sale, some other time after the sale, etc.). I would be very grateful if you could enlighten me as to the specifics of this situation. Thank you.

Hi,
HMRC cannot comment on future events as legisaltion and/or plans may change.
Thank you

Hi again, I understand. In that case, could you please answer my question under the assumption that I sold the REIT shares today, with the current legislation in place?

Hi,
Selling REIT (Real Estate Investment Trust) and UK tax implications:
•    UK investors are subject to normal capital gains tax rules on REIT share sales.
•    Non-resident investors may also be liable for capital gains tax or corporation tax on REIT share sales
•    Most UK double tax treaties provide for a reduced withholding tax rate of 15% for distributions to non-UK tax resident investors
•    REITs receive income from rents and are exempt from corporation tax on property rental income and gains, provided certain conditions are met
Thank you.

But how and when am I supposed to report such a sale? Would a standard self-assessment at the end of the tax year do the trick? Thank you very much.

Hi,
You would need to convert all acquistion and disposal values costs to GBP steling using an exchange rate in use at the time of acquistion and disposal. If the property was your main residence for a period of time, you can claim Private Residence Relief. There is a tax calculator here:
Tax when you sell property#  
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 theit own choosing.
Thank you.