Hi Andres! How's it going? To answer your question I would say "sign up for a new account" sounds more natural to say. 1)Today, I signed up for a new bank account. 2) I need to sign up for a new account because I moved to another country. I hope this helps Andres!🤝

I think there might be regional differences here, but I would personally only say “sign up for”. (I’m from Philadelphia, USA).

They mean exactly the same thing and are interchangeable.