Stripe and Adyen Expand Into B2B
Slope
The real threat from Stripe and Adyen is distribution, not feature overlap. Both already sit inside huge merchant payment flows, so every new B2B payments or embedded finance product can be sold into an existing customer base instead of built account by account. That matters because B2B payments winners often start as a payment button or platform integration, then expand into invoicing, financing, fraud tools, treasury, and merchant software around the money movement workflow.
-
Stripe has the scale to bundle new products fast. It processed $1.4T in payment volume in 2024, serves half of the Fortune 100, and is adding products like treasury, issuing, invoicing, merchant of record, and stablecoin capabilities that push it deeper into business finance workflows beyond checkout.
-
Adyen brings a different advantage, deep enterprise and platform distribution. It processed more than €1T in 2024 and keeps extending embedded payments through partner channels and platform tooling. Its single in house stack is built to let large merchants and software platforms add payments and financial services across geographies without stitching together many vendors.
-
Slope still has a clear wedge because B2B payments are messy in ways general processors do not solve by default. Buyers pay by invoice, ACH, card, or terms, finance teams reconcile purchase orders and ERP records, and underwriting depends on business specific repayment behavior. That is why specialized tools can win early even against much larger processors.
The market is heading toward stack competition. Large processors will keep moving upward from payment acceptance into software and finance products, while specialists like Slope move downward from underwriting and order to cash into payment rails. The durable winners will be the ones that own the day to day business workflow where payment, credit decisioning, and reconciliation happen together.