Stablecoin settlement for PSPs: adding stablecoin rails without building the infrastructure
PSPs can add stablecoin settlement to their existing stack through an API, rather than building wallets, custody and conversion in-house. Here is how it works and what to look for.
Damex, Editorial team3 min read

A payment service provider can add stablecoin settlement to its existing stack through an API, rather than building the wallets, custody, conversion and payout infrastructure itself. The PSP keeps its own product and customer relationships, while a regulated provider handles the stablecoin rails underneath. This lets a PSP offer stablecoin settlement to its clients without becoming a crypto operation.
Why PSPs are looking at stablecoin rails
PSPs sit between merchants and the payment networks, and their clients increasingly ask about faster, cheaper cross-border settlement. Stablecoin rails can settle value in minutes on corridors where correspondent banking is slow or expensive. The problem is that building the underlying infrastructure, wallets, custody, conversion, liquidity and payout coverage, is a major undertaking and not the PSP's core business.
How a PSP adds stablecoin settlement
Through an appropriate CASP's API services and permissions, a PSP or its customers can route value over stablecoin rails and settle in fiat, while the provider handles conversion, custody and the regulated framework. The flow fits alongside the PSP's existing payment orchestration: funds move over stablecoin rails and counterparties can convert and receive local fiat, without the PSP or its clients taking on long-term volatile crypto asset exposure. This is the same settlement model described in our guide to cross-border settlement with stablecoins.
What to look for in a provider
- A regulated framework for the conversion, custody and payout activity.
- Coverage across the corridors and currencies the PSP's clients need.
- A clean API that fits into existing orchestration, not a separate silo.
- Fiat in and fiat out, so recipients do not need to handle crypto.
- Clear handling of compliance, AML and sanctions screening.
Where Damex fits
Damex provides stablecoin payments, conversion and settlement through an API, within a regulated framework, so a PSP can add stablecoin rails without building the infrastructure itself. In respect of servicing within the EU, Damex Digital Ltd is authorised by the Malta Financial Services Authority as a Crypto-Asset Service Provider and a Financial Institution under MiCA and the FIA.
Frequently asked questions
Can a PSP offer stablecoin settlement without building the infrastructure?
Yes. Through partnering with an appropriately regulated CASP, a PSP can add stablecoin settlement while the regulated provider handles the wallets, custody, conversion and payout rails underneath via API.
Does the PSP or its clients need to hold crypto long-term?
Not necessarily. Value can move over stablecoin rails and convert to fiat as soon as it needs to.
How does stablecoin settlement fit into payment orchestration?
It becomes another rail alongside the existing orchestration layer, routed through an API, rather than a separate system the PSP has to build and run.
What should a PSP check before adding stablecoin rails?
The partner provider's regulated framework, corridor and currency coverage, the quality of the API, fiat in and out, and how compliance and screening are handled.
Disclaimer
This article is for information and discussion purposes only. It does not constitute financial, investment, tax or legal advice, and should not be relied upon as such. Crypto-assets and stablecoins carry risk, including the risk of loss. Availability of Damex services depends on your jurisdiction and is set out in the relevant terms and conditions. Services are provided by different Damex entities under different regulations by region.
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