How old do I have to be to open an account? January 17, 2022 23:22 Updated To open a Dollarize account you must be at least 18 years old. Related articles What’s the reason for providing a “trusted contact”? Is it mandatory? Do I have to pay taxes on my Dollarize account? What type of brokerage account does Dollarize offers? Do I have to maintain a minimum balance? How do I open a Dollarize account?