Twitter will pass the @POTUS handle to President-elect Joe Biden after he was sworn in on the inaugural day the organization said to Politico. Twitter will pass the account to Biden even though President Donald Trump has not conceded—which he has not yet done, considering the fact that Biden was widely called for election earlier this month.
Twitter is actively preparing to support the transition of the White House Institutional Twitter Accounts on January 20, 2021, the Twitter representative said in a statement to The Verge. As we did for the 2017 presidential transition, this process is being carried out in close consultation with the National Archives and Records Administration.
Other presidential pages, including @whitehouse, @VP, and @FLOTUS, will also be relocated, Politico reports. Current content on both pages will be archived until the transition (here is Barack Obama's @POTUS archive, if you're curious), and the accounts will be reset to zero tweets.
Trump will continue to manage his personal handle, @realDonaldTrump, until Biden's inauguration, but the account will lose unique privileges due to Trump's status as a global leader—meaning that he would be subject to the same guidelines as other people on the site.