Blog

Breakdown of the cost and revenue components inside a single payment


For banks, payments have never been just infrastructure. They have always been a source of revenue. What is changing is who gets to participate in that revenue.

As payment infrastructure opens up to non-bank participants and new payment mechanisms enter the market, more organisations are becoming part of the payment value chain. Payment service providers, infrastructure companies and other ecosystem participants now compete for a share of value that has historically sat largely within banking.

For merchants the conversation has traditionally been very different. Payments are treated as a cost of doing business, a line item to be negotiated downwards. That framing leaves most of the picture out.


The payment itself contains far more than that. Alongside the principal amount sit tax, regulatory fees, switching fees, supplier or partner commissions, foreign exchange spreads, interest, and other charges and revenue components. Each belongs to someone. Each has a different commercial character.

Payment systems have generally not been designed to make those components visible as separate facts. They treat the payment as one blended amount, which makes some fundamental questions difficult to answer:

  • What is the actual cost of processing this payment?
  • Which components generate revenue rather than cost?
  • Which costs belong to the merchant, and which to a provider or another participant?
  • Where are margins being affected, and by which payment methods?
  • How does the cost of a particular payment method compare with the value it creates?


Multiple cost and revenue components inside a single payment transaction

The economics of payments are shifting

For decades banks have occupied the central position in payment infrastructure and captured a large share of the value generated by payment activity. That position is changing.

Opening national payment infrastructure to non-bank participants creates room for payment service providers and infrastructure businesses to participate more directly in the payment value chain. At the same time, merchants face a widening set of payment mechanisms. Cards remain central, but digital wallets, QR-based payments, buy now pay later and other models are now real options rather than experiments.

That creates choice, and choice creates complexity. Every new payment mechanism raises questions about integration, pricing, customer experience, settlement timing and the effect on margin. For a merchant the decision can no longer be whether a payment method can be accepted. It has to be what accepting that method means for the business.



A merchant may be making the sale, but the payment journey can pass through several providers and infrastructure layers before the money reaches its destination. That creates both cost and opportunity. The difficulty is telling them apart.

If the payment record does not show what happened inside the transaction, the merchant knows the amount received without understanding the economics that produced it. Knowing what you received is not the same as understanding what happened.


Payment moving through several providers and infrastructure layers before settlement




There is a difference between processing a payment and understanding it.

Processing asks whether the transaction happened. Understanding asks what happened inside it: who created value, who incurred cost, and what that means for the business.


Payments are not the final step in a sale. They are part of the economics of the sale. The first step towards treating them as a commercial lever is being able to see what is actually happening


If your business can see what a payment cost but not what it contained, that is where the work starts.

Speak to the Causal Nexus team about the visibility and orchestration layer around your existing payment environment.