Opayo vs. NMI Payments

Opayo, which was previously known as Sage Pay, is recognized as one of the UK's most trusted payment service providers, committed to aiding businesses in scaling their operations and managing customer transactions efficiently. Our main emphasis lies in guaranteeing payment security and reducing the risk of fraud, instilling confidence that your customers' sensitive information remains safeguarded. We take pride in offering outstanding customer service, available 24/7, which has contributed to our impressive 5-star rating on Trust Pilot. Our innovative payment solutions are crafted to evolve with your business needs, whether you require Chip & PIN capabilities for in-store transactions or prefer one of our various standalone or integrated terminal options. Furthermore, businesses can securely handle mail orders and telephone payments using our intuitive web-based virtual terminal interface. With our comprehensive omnichannel solutions, customers can conveniently pay through multiple platforms including in-store, online, by phone, or on mobile devices. Transitioning to a new payment provider or launching a business can be a daunting task, but our expert team is prepared to support you every step of the way, ensuring a seamless transition and paving the path for ongoing success. We are dedicated to equipping your business with the necessary tools and assistance for sustained growth and development in an ever-evolving marketplace.

NMI Payments transforms payments from a backend function into a strategic growth driver. Designed for software companies. SaaS platforms, ISVs and ISO partners, it enables you to embed, brand, and monetize payments directly within your software—without becoming a PayFac or taking on compliance complexity. As a full-stack processor, acquirer, and technology partner, NMI manages underwriting, risk, and regulatory oversight behind the scenes. The result: faster go-to-market, stronger brand control, and new recurring revenue streams. With modular design and white-label flexibility, NMI adapts to your business model, whether you’re processing payments online, in-store, in-app, or unattended. Key Benefits Launch white-labeled payments in weeks, not months Control pricing, share in transaction revenue, and own the customer relationship Built-in compliance, risk, and fraud prevention tools Flexible integration via no-code, low-code, or full API access Developer-First Experience NMI’s developer environment bridges business and technical needs. Developers gain instant sandbox access, prebuilt SDKs, and intuitive APIs to test, integrate, and deploy quickly. Guided onboarding, dynamic sandbox simulations, and drop-in components make payments easier to build and maintain. Business teams can explore revenue opportunities through self-service tools and instant earnings insights. With NMI Payments, you can embed and scale payments without losing control—powering faster launches, stronger retention, and lasting growth