In February 2020, the OECD consulted on proposed rules setting out how digital platforms should collect information about the income of sellers and report it to tax authorities.
Under the new rules, websites and applications based in the UK will be required to report sellers' income arising in the previous calendar year to HMRC. The reporting deadline will be 31 January of the year following the calendar year.
HMRC stated that the new rules will improve international co-operation in regard to the exchange of information for tax purposes. They will also allow HMRC to access data from platforms based outside the UK quickly and efficiently, which should encourage compliance and increase the visibility of transactions.
The rules will also help taxpayers to get their tax right and will assist HMRC in detecting and tackling tax non-compliance.
HMRC's consultation will close on 22 October 2021.
You can read more about this here on the GOV.UK website.