Whatever bank offers the best services to meet your needs. Then do treasury management. Put excess cash in short term treasury bonds (and their non-US equivale

Whatever bank offers the best services to meet your needs. Then do treasury management. Put excess cash in short term treasury bonds (and their non-US equivalents). These are backed by the full faith and credit of the issuing country and the markets in them are very liquid. I’m sure there is some service that will automate this for you, for a small fee.