B2B payments encompass all payment methods used between businesses, from traditional wire transfers and checks to modern ACH, virtual cards, and digital payment platforms. Optimizing B2B payment flows reduces friction, accelerates cash collection, and improves supplier relationships.

Example: A SaaS vendor accepts B2B payments via ACH bank transfer, wire transfer, and credit card, with ACH being the preferred method for enterprise customers due to lower transaction fees on large invoices.