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ACH (Automated Clearing House) is the standard rail for moving funds between a Tesouro-held account and an external bank account. Settlement runs through the bank’s ACH operator and typically lands within one to three business days. ACH is not real-time and is not available on weekends or bank holidays. POST /embedded-banking/v1/money-movements/ach The request adds two fields beyond the common shape: The external account is referenced by its Tesouro-issued account ID, not raw routing and account numbers. It must already be linked through the linked-accounts flow. Like every money-movement request, ACH accepts an idempotencyKey. Always send one so a retried submission returns the original transfer instead of creating a duplicate. See Lifecycle & idempotency. ACH transfers start as PENDING and transition to COMPLETED once the upstream banking core confirms settlement. The terminal-state update happens lazily during reads — see Lifecycle & idempotency.
Required scope: embedded:transfer:write and payment_rail:ach.