Just work with an ACH provider that would enable them to use the providers API, that would stitch this. Ot many people have their Bank/Routing information with them handy, so best to use a service like Knox Payments (caution: they are going thru an upheaval at present) or Synapse Pay.
How can I connect to the ACH network so customers can pay from their bank accounts inside my product?
How does Kash function at a technical or system level?1 ansIs knowing someone’s bank account number alone enough to withdraw money from a US bank account?1 ansWhat is the best option for a website that needs to receive low-volume but high-value ACH payments?1 ansDoes Stripe support ACH bank payments in addition to card transactions?1 ans