Author: John Taylor Garner, Founder & CEO, Odynn
Open banking B2B payments are quietly reshaping how businesses move money, reconcile invoices, and close their books. Yet most finance leaders still think of open banking as a consumer play. In reality, the infrastructure now exists for platforms to request account-to-account payments, receive payer authorisation through the bank itself, and pull back structured status data for automated reconciliation. That changes the game for CFOs who have spent years patching together portals, batch files, and emailed remittance slips.
What follows are five shifts that explain why open banking B2B payments deserve a spot on every finance leader’s radar. More importantly, these shifts reveal where the operational and competitive advantages are hiding.
Why B2B Payment Systems Feel Broken
Most B2B friction does not come from the payment itself. Instead, it shows up after the money should have moved. Remittance data often travels separately from the transaction, arriving as a PDF attachment, an email note, or a portal entry. As a result, cash application becomes a matching exercise rather than straight-through processing.
The second source of pain is delayed status. Batch rails and portal-based initiation mean a payment can fail silently, and your team only learns about it hours or days later. Then comes the chasing, retrying, and reprocessing. Australia’s payments migration agenda targets exactly this problem by moving core supplier payment flows off batch-based BECS and onto the real-time, data-rich NPP.
So the issue is not that banks cannot move money quickly. Rather, it is that payment, approval, identity, and reconciliation live in disconnected systems. Finance teams spend their time closing gaps instead of closing books. That is the context in which open banking B2B payments become relevant.
Open Banking B2B Payments Fix the Loop
Open banking matters in B2B when four primitives line up. Together, they close the loop between invoice and cash application. Here is how each one works in practice.
First, payment initiation on A2A rails lets a platform register a payment consent, optionally confirm funds, submit the payment order, and retrieve status. Consequently, the entire flow happens through an API layer that rides domestic account-to-account rails. No portal re-keying. No batch file uploads.
Second, tokenized authorisation based on FAPI-on-OAuth patterns binds user authentication to an intent ID. This produces scoped, revocable tokens instead of shared credentials. For B2B, that means auditability and delegated approvals become part of the infrastructure rather than a manual overlay.
Third, enriched metadata under ISO 20022 standardises how invoice references and remittance context travel in structured fields. Meanwhile, this structured data is what makes automated reconciliation possible at scale. Without it, every payment still requires a human to match it to an invoice.
Fourth, webhook and event notifications push signed status updates to a callback URL. As a result, platforms can update invoice status and post to ledgers in near real time as payment states change. Open banking B2B payments become a trackable state machine rather than a black box.
What Changes for CFOs and Finance Teams
When these four primitives are embedded into workflow, the gains show up in daily finance operations. Reconciliation, for example, becomes a pipeline instead of a backlog. Dymocks Education reported that legacy direct debits could take up to five days, but with PayTo, onboarding activities happen almost immediately. On top of that, manual reconciliation dropped significantly through ERP integration and real-time status updates.
Approval cycles compress as well. PayTo agreements include explicit terms covering amount, purpose, and frequency. Because authorisation happens inside the payer’s bank, there is no ambiguity about what was approved. Furthermore, open banking guidance pushes for granular lifecycle statuses, including settlement-complete, which gives finance teams the certainty they need to close off receivables faster.
This shift also reduces DSO. When a platform offers pay-by-bank at the point of invoicing, the time-to-cash compresses because there are fewer handoffs between systems. Similarly, exception rates drop when structured remittance data eliminates the guesswork in cash application. Open banking B2B payments turn invoice-to-cash into a measurable, automatable workflow.
Business Models This Unlocks
Embedded pay-by-bank inside vertical SaaS is the near-term winner. Think invoice presentment, bank-authorised payment, instant confirmation, and automated reconciliation all in one flow. GoCardless positions Instant Bank Pay for exactly this use case, targeting invoicing and failed-payment recovery on Faster Payments with instant confirmation that reduces chasing. The broader trend of cross-border payment partnerships reinforces how platforms are embedding financial rails directly into their products.
The higher-leverage model, however, is combining terms and capital inside workflow. When a platform can verify accounts, observe consented cashflow, and receive real-time status, it can offer dynamic terms and short-duration financing. ANNA Money integrated TrueLayer and reported a 10% increase in customer transactions, 2.5% savings per payment, and dramatically faster invoicing after adding open-banking-based data and payments. Open banking B2B payments become the foundation for embedded lending, not just embedded payments.
This is worth watching because it changes who owns the economic value in a transaction. The bank still runs the account. Yet the platform that owns invoicing, approvals, and reconciliation increasingly owns the payment experience. That dynamic is playing out across the broader fintech landscape as software companies absorb more financial services functionality.
Regulatory Shifts Shaping the Roadmap
In Europe, PSD2 formalised account information and payment initiation services. Banks must grant regulated third parties access to payment accounts with customer consent. That regulatory foundation is what made open banking B2B payments viable across the EU and UK in the first place.
In Australia, the picture is evolving rapidly. Action initiation under the CDR framework contemplates accredited parties initiating actions like payments. At the same time, regulators have flagged the complexity that arises where CDR instructions meet sectoral obligations around payments rules, AML, and liability. Nevertheless, the NPP continues to scale, with the operator reporting nearly 2 billion real-time payments processed. The Reserve Bank has also highlighted operational resilience expectations for the NPP as it takes on more critical payment flows.
Privacy and consent remain the other gating factor. Australia’s privacy regulator has indicated support for action initiation only within a robust privacy and confidentiality framework. For platforms building on open banking B2B payments, this means consent architecture is not optional. It is a prerequisite. The way AI is already reshaping fraud detection in financial services suggests that consent and security frameworks will continue to tighten alongside capability expansion.
Measuring Value and Navigating Challenges
CFOs should track outcomes tied directly to cash and workload. DSO and time-to-cash for invoices where pay-by-bank is offered are the primary indicators. Beyond that, the cash application straight-through rate, meaning the percentage of payments auto-matched without human intervention, tells the reconciliation story. Exception rates and time-per-exception round out the picture. Together, these metrics quantify whether open banking B2B payments are delivering operational lift or just adding another integration.
Implementation still fails for predictable reasons, though. Bank connectivity varies because some features, including event notifications, remain optional in certain implementations. In addition, data quality for ISO 20022 remittance fields is inconsistent across banks and geographies. Real-time rails also compress reaction time for risk and liability decisions, which not every treasury function is prepared to handle.
Despite those challenges, the forward-looking implication is straightforward. As real-time A2A rails scale and write-access frameworks mature, open banking B2B payments will increasingly be bought as a workflow capability embedded into software. Banks will still run the accounts. But the platform that owns invoicing, approvals, and reconciliation will own the payment experience and the economic value that comes with it. For CFOs paying attention, the window to shape that architecture is open right now.