The 2026-01 Admin GraphQL API introduces support for ACH payment methods, enabling merchants to accept and manage bank account-based payments through Shopify Payments. This means new types of PaymentInstrument and CustomerPaymentInstrument are now available for B2B company locations, supporting payment terms and draft orders. If your integration manages the payment lifecycle of those ways to sell, consider upgrading. If you are not on the latest version of the API, you will not find these available payment methods.
This is a companion discussion topic for the original entry at https://shopify.dev/changelog/new-ach-support-for-deferred-payments