What is the difference between a direct and an indirect participant?
A direct participant connects to SPEI with its own infrastructure and answers to Banxico for its operation; an indirect participant operates through a direct participant, which provides the connectivity and owns the relationship with the payment system. The decision defines per-transaction cost, control over availability, speed to launch and the institution’s growth ceiling.
Side-by-side comparison
| Criterion | Direct participant | Indirect participant |
|---|---|---|
| Connection | Its own, against Banxico's infrastructure. | Through a direct participant. |
| Control | Full: limits, windows, customer experience. | Bounded by what the participant offers. |
| Cost per transaction | Low at high volume; requires infrastructure. | Per-transaction fee; grows with volume. |
| Time to launch | Integration and certification project. | Weeks, against the participant's API. |
| Contingency | Its own COA, POA and ASA, drilled. | Depends on the direct participant. |
| Regulatory relationship | Direct with Banxico. | Intermediated by the participant. |
The economics of the decision
Most comparisons stop at “direct is expensive, indirect is cheap”. That is misleading, because these are not two prices: they are two different shapes of cost.
Under indirect participation the cost is almost entirely variable: you pay per operation, so it grows exactly in step with the business and never falls per unit. Under direct participation the cost is an up-front investment plus a relatively fixed monthly expense, so each additional operation costs less on average.
Two curves of that shape cross somewhere. Below the crossing point, paying per operation is the rational choice; above it, every month you keep paying fees is money you do not get back. The useful question is therefore not which model is cheaper, but where your crossing point sits in monthly volume.
Work out yours. Our SPEI cost calculator takes your volume, what you pay per operation today and your estimate of running your own connection, and returns the break-even volume and the month the investment pays back.
What the per-operation fee does not show
Cost per operation is visible and easy to budget, which is why it usually wins the argument. It is worth contrasting it with what never appears on that budget line:
- The sponsor's margin sits inside the fee, and that margin scales with your growth even when their cost to serve does not.
- The sponsor's operating limits and maintenance windows become yours, and you are the one explaining them to your customers.
- How fast you can ship product is bounded by a third party's calendar.
- If the sponsor changes strategy, pricing or ownership, your operation gets renegotiated without you controlling the table.
When the case is not economic
It is worth saying plainly: for some institutions direct participation does not pay for itself, and the calculator will tell them so. At low volumes, indirect participation is the correct decision and there is nothing to debate.
In those cases the conversation is not about savings but about risk and autonomy: who your continuity depends on, who sets your processing hours, and how fast you can react. Some institutions connect directly with a negative three-year economic case because the strategic case justifies it. That is a legitimate decision, as long as it is made with the number in view rather than instead of it.
Signs it is time for direct participation
- Per-transaction fees already exceed the monthly cost of your own infrastructure
- The participant's maintenance windows or limits affect your customers
- The regulator or your board asks to reduce third-party dependency
- The participant's roadmap does not move at your product's pace
- Your volume justifies negotiating directly with the ecosystem
How InterPago solves it
InterPago builds direct-participation infrastructure as a finished product: native-protocol connectivity, certificates and key custody, settlement and reconciliation, reporting and the three contingency modes, with a typical integration in production in about 90 days. Migration from indirect participation is done with a controlled cutover, without interrupting operations.
Frequently asked questions
What is a direct SPEI participant?
An institution authorized by Banxico that connects directly to SPEI with its own infrastructure: its own certificates, native-protocol connectivity, settlement account and contingency modes. It has full control of its operation and its customers' experience.
What is an indirect SPEI participant?
An institution that sends and receives SPEI transfers through a direct participant, without connecting to Banxico itself. It reduces cost and time to launch in exchange for depending on the participant for availability, service windows and product evolution.
When should you move from indirect to direct participation?
When volume makes per-transaction fees exceed the cost of operating your own infrastructure, when the institution needs control over availability and limits, or when depending on a third party becomes an operational or strategic risk.
From what volume does being a direct SPEI participant make sense?
It makes sense when the per-operation fee you pay today, multiplied by your monthly volume, sustainably exceeds the monthly cost of running your own connection. That crossing point depends on your negotiated fee and your cost structure, so there is no general figure. You can work out yours with the SPEI cost calculator.
Can a SOFIPO or a fintech be a direct participant?
Yes, if it obtains the corresponding authorization and meets Banxico's technical and operational requirements, including COA, POA and ASA contingency. Many start as indirect participants and migrate to direct participation as their volume grows.
Work out your break-even point in the SPEI cost calculator, review the SPEI connection requirements, see our SPEI service or request a free assessment.