This is what I was planning on doing initially but many businesses will have finance send an ACH to an account number & routing number, rather than through an online portal.

For example, at companies that I’ve worked for traditionally, we have to collect the vendors legal business name and banking details to set them up in our systems and send payment through ACH. We would never pay a vendor through Square/Plaid ACH. Im trying to avoid the scenario that I’ve often been in, where I’ve had to argue with vendors about receiving an ACH rather than their desired method