NMI
White-label payment gateway with 200+ processor integrations, purpose-built for ISV and ISO partnerships.
Overview
NMI (Network Merchants Inc.) provides a white-label payment gateway that integrates with 200+ processors. Its partner-first model is designed for ISVs and ISOs who want to offer payments under their own brand with the flexibility to choose and switch processors.
For the latest on NMI's ISV capabilities, documentation, and partner programs, visit nmi.com.
Pricing
Gateway fees + processor interchange-plus
Gateway-as-a-service pricing with per-transaction and monthly fees. Processor costs are separate and negotiated directly. Volume discounts available for ISV partners.
Full pricing breakdown →Pros
- ✓ White-label gateway supporting 200+ processor integrations
- ✓ Partner-first model designed for ISVs and ISOs
- ✓ Multi-processor routing for cost optimization
- ✓ Strong in POS/retail ISV integrations
Cons
- ✗ Not a processor — requires separate acquiring relationship
- ✗ Less modern API design than Stripe or Adyen
- ✗ Brand less recognized by developers
- ✗ Documentation could be more comprehensive
ISV Fit
Best for ISVs wanting white-label gateway capabilities with multi-processor flexibility. Ideal when the ISV needs to support multiple processors or offer processor choice to merchants.
NMI Review: An ISV’s Perspective
This review evaluates NMI specifically from the ISV and SaaS platform perspective. While many reviews focus on small business or e-commerce use cases, ISVs have fundamentally different requirements: embedded payment facilitation, sub-merchant onboarding, revenue sharing, and white-label capabilities.
What ISVs Should Know About NMI
NMI scores 3.7/5 in our ISV-focused evaluation. The rating reflects the platform’s capabilities for embedded payments, not general payment processing. A provider can be excellent for direct merchants but mediocre for ISV integration — and vice versa.
For ISVs, the key evaluation criteria are:
- Merchant onboarding speed: How quickly can your software’s users start accepting payments? Minutes vs. days matters for activation rates.
- Revenue sharing model: What percentage of each transaction does your ISV earn? This directly impacts your payment revenue line.
- White-label capabilities: Does the payment experience carry your brand or the processor’s? This affects merchant perception and switching costs.
- API quality and documentation: ISV developers need clean APIs, comprehensive docs, and responsive sandbox environments.
- Compliance burden: How much of the PCI, KYC/KYB, and regulatory compliance does the platform handle vs. leaving to the ISV?
Who Should Consider NMI
NMI fits certain ISV profiles better than others. The platform’s strengths align with specific vertical markets, transaction volumes, and integration depth requirements. ISVs should evaluate NMI alongside 2-3 alternatives using a structured scorecard that weights ISV-specific capabilities higher than general payment features.
The Bottom Line
No payment platform is perfect for every ISV. NMI has clear strengths and weaknesses that make it ideal for some integration patterns and less suitable for others. The right choice depends on your specific vertical, merchant profile, transaction volumes, and how much control you want over the payment experience.