I don't recommend Mercury as a bank. We were generally satisfied with the bank until it became clear that Mercury is quite unreliable.
Our company, a Delaware C Corp, worked with Mercury for almost two years without any issues on our end. We have numerous clients in the US and Europe, as well as contractors, so we constantly received and made payments. The founders are residents of the US, UK, and Georgia.
At one point, the bank requested proof of residency for our US-based founder. The very next day, without waiting for the ID upload, we were suddenly notified that our account would be closed, with no possibility to appeal. In one day, our account, which handled all our payments, invoices, and contractor fees, was abruptly shut down without explanation.
Mercury also has other downsides, like slow support with responses taking 2-3 business days, which is unacceptable for a modern bank, as most offer live chat with an agent.
But the biggest drawback is the bank’s unreliability. Even as an established business with a solid record, founders in the US, and reputable clients, your account can be closed without warning or reason.
As a founder, I can’t recommend Mercury.