joint account
US /ˌdʒɔɪnt əˈkaʊnt/
UK /ˌdʒɔɪnt əˈkaʊnt/

1.
a bank account held by two or more people, each of whom has the right to deposit and withdraw funds
:
•
They opened a joint account to manage their household expenses.
•
Both spouses have access to the joint account.