Don't try to overthink it. The sad truth is that password management is a total boondoggle, especially for banks. This is due to a huge body of superstition and

Don't try to overthink it. The sad truth is that password management is a total boondoggle, especially for banks. This is due to a huge body of superstition and cargo-cult policies on how to do it, how everyone else is doing it, and how the mess of regulations concerning password/credit card info tell you to do it. There are of course best practices concerning how to correctly, securely, and safely manage passwords, but these pale in comparison to all the "common knowledge" about proper "password rules" and "encryption methods" out there. Many banks will limit password length, limit your character set, forbid non-alphanumerics, auto-lowercase, choose an obvious login for you, limit you to easily-google-able "secret" questions, and prevent you from pasting in a password from a password manager app, and do other things that limit your ability to choose secure credentials. These days you are lucky if your bank lets you actually choose a password instead of just assigning you an unchangeable 4-digit numeric PIN!