White House Chief of Staff Ron Klain announced the move in a morning staff call.
She has been working for Biden since May and will also retain her current title of White House senior adviser, which has allowed her to advise the president on a wide range of issues, [an administration official] said.
Tanden will replace Jessica Hertz, a former Obama administration attorney who worked more recently in the government affairs office of Facebook. White House officials have praised Hertz as a highly regarded, well-liked member of the team.
Hertz will leave the job on Friday, a planned departure that was first reported by Politico last week, and Tanden will start on Monday, the official said.