Pre-Certified Payment Processors & Devices for Seamless Integration
We pre-certify the most popular chip and contactless payment devices with the largest UK and European acquirers to offer maximum choice and speedy integrations. Take a look at our ever-growing list.
Payment connections for developers
Our easy-to-integrate SDKs and APIs support a range of payment devices for mobile, fixed and unattended applications on all common operating systems. Each comes with certified connections to leading processors and acquirers.
Acquirers + devices
Windows/Linux SDK
Our most popular SDK allows you to integrate retail POS and unattended terminals into both PC and embedded systems, with many advanced payment features.
Acquirers + devices
iOS/Android SDK
Our feature-rich mobile SDKs allow you to develop your mobile POS applications to work with certified industry standard devices.
Acquirers + devices
iProcess Mobile App
Acquirers + devices
Tap to Mobile
Acquirers + devices
Cloud API
Acquirers + devices
Direct Connect API
Our Direct Connect SDK integration allows manufacturers to build an NMI payment application into their devices or apps. It’s certified by NMI so it can be widely sold through partners.
The freedom of choice
One-size-fits-all payment solutions don’t offer the flexibility most businesses need to scale. Build exactly what you need for your customers and business model using our modular platform.
Processors & Devices
NMI offers more payment processor and device options than anyone else in the industry.
SDKs & APIs
Build whatever you need with less time and effort, from integrating payments into your software to developing terminal devices pre-equipped with NMI payment processing.
Gateway Solutions
Select just the features you need for your merchants, from standard payment acceptance to advanced solutions that drive revenue.