Every Constellation Software operating company that wanted to embed payments has faced the same decision. Build the infrastructure yourself, with all the compliance, underwriting, and risk work that comes with it. Or bolt on something generic that was never designed for how vertical market software actually operates.
That decision is now retired. CSIPay is live.
CSIPay is the embedded payments platform from Constellation Payments, built exclusively for Constellation Software and Jonas Group operating companies and the ISVs in their orbit. It is not a product we adapted for the ecosystem. It is a platform we built for it, and only for it.
One Integration, the Full Payment Lifecycle
CSIPay lets your operating company integrate payments directly into your product without building or managing the infrastructure behind them. One integration connects you to processing, compliance, risk controls, settlements, and reporting. Your team stays focused on your product. The payments engine runs underneath it.
The platform covers merchants across the United States and Canada, holds PCI DSS Level 1 certification, and is backed by a 99.9% uptime SLA. Cards, ACH, recurring billing, tokenization, and hosted payment pages are all part of the same stack, documented in one place and supported by one team.
For a full breakdown of platform capabilities, see the CSIPay features page and our guide to what a modern payment gateway actually does.
Why a Shared Platform Wins
Constellation’s model is built on independent operating companies with deep vertical expertise. That independence is a strength everywhere except payments, where it historically meant duplication. Each company solving compliance alone. Each company negotiating processor relationships alone. Each company standing up risk management, merchant underwriting, and settlement operations from scratch.
CSIPay centralizes that work as a shared platform across the ecosystem. The compliance build-out happens once. The risk infrastructure is maintained once. The underwriting expertise is pooled, not fragmented. Every operating company that joins the platform benefits from the operational learnings of every company already on it.
In a closed ecosystem like Constellation’s, that compounding effect matters more than anywhere else. The platform gets better with every vertical it serves, and those improvements flow back to every partner on it.
A Track Record, Not a Promise
CSIPay is new as a platform brand, but the operation behind it is not. Constellation Payments already supports more than 4,000 merchants and has distributed over $40 million to its software partners. The teams handling risk, underwriting, settlement, and support on CSIPay are the same teams that built that record.
What launches today is the consolidation of that experience into a single modern platform: one API surface, one merchant portal, one reporting layer, and one roadmap shaped entirely by the needs of Constellation operating companies.
Payments as a Profit Line, Not a Cost Center
For most software companies, payments sit on the expense side of the ledger. Embedded payments move them to the other side. When payments run through your product, they deepen your merchant relationships, increase switching costs, and create a revenue stream that grows with your customers’ volume.
CSIPay is built to make that shift practical. Partners own the merchant relationship. The platform handles the infrastructure. Programs like the CSIPay Surcharge Program extend the model further, giving partners compliant, automated ways to help merchants manage processing costs.
What Happens Next
Operating companies across the ecosystem are onboarding now. The path is straightforward:
- Connect with your CSIPay representative to scope your integration and boarding plan.
- Review the platform documentation and integration options with our team.
- Board your merchants and go live with full lifecycle support behind you.
If your operating company has been weighing whether to build payments, buy payments, or keep deferring the decision, the calculus just changed. The platform your ecosystem needed now exists, and it was built for you.
Talk to Your CSIPay Representative
Your CSIPay representative can walk you through the platform, your integration options, and what boarding looks like for your operating company. If you are not sure who your representative is, reach out through the Constellation Payments contact page and we will connect you.