NMI vs Stripe — Payment Gateway Comparison 2025
NMI and Stripe serve fundamentally different markets. This comparison helps you understand which platform fits your business model, technical requirements, and growth plans.
Overview
NMI is a white-label, multi-processor gateway built for ISOs, ISVs, and resellers who distribute payment processing to merchants. Full overview →
Stripe is a full-stack payment platform built for developers and online businesses. It combines gateway, processing, and banking services into one API-first product.
Feature Comparison
| Feature | NMI | Stripe |
|---|---|---|
| Business model | B2B gateway (ISO distribution) | Direct-to-merchant platform |
| Best for | ISOs, resellers, high-volume merchants | Developers, SaaS, startups, e-commerce |
| Signup process | Through an ISO/reseller | Self-serve, instant |
| White-label | ✓ Full rebranding | — Stripe Connect (limited) |
| Multi-processor | ✓ | — Stripe is the processor |
| Virtual terminal | ✓ Built-in | Via Dashboard (limited) |
| Developer API | RESTful + SDKs | Best-in-class API + extensive docs |
| Cart plugins | 125+ pre-built | Custom via API (fewer pre-built) |
| Recurring billing | ✓ Customer Vault | ✓ Stripe Billing |
| In-person payments | Hardware terminals via ISO | Stripe Terminal |
| Banking services | — | ✓ Stripe Treasury, Issuing |
| Pricing | ISO-negotiated (interchange+) | 2.9% + 30¢ (flat rate) |
When to Choose NMI
Choose NMI if you are an ISO, reseller, or payment facilitator who needs white-label branding, multi-processor routing, and the ability to manage a portfolio of merchants. NMI is also better for businesses that want interchange-plus pricing at scale rather than Stripe’s flat rate. See our small business guide for cost analysis.
When to Choose Stripe
Choose Stripe if you are a developer-led startup, SaaS company, or e-commerce business that values instant self-serve onboarding, best-in-class API documentation, and an integrated financial stack (payments + banking + issuing). Stripe’s flat pricing is simpler but can be more expensive at high volumes.
The Bottom Line
NMI and Stripe are not direct competitors — they serve different links in the payment chain. NMI is infrastructure for payment distributors; Stripe is a complete platform for online businesses. Many ISOs compare NMI to other B2B gateways like TSYS or Payrix rather than to Stripe.
Can I use NMI and Stripe together?
In theory, yes — they serve different purposes. Some businesses use NMI for in-store and phone transactions (via their ISO) and Stripe for online payments. However, managing two gateways adds complexity.
Which is cheaper at high volume?
NMI through a well-negotiated ISO agreement typically offers interchange-plus pricing, which becomes cheaper than Stripe’s flat 2.9% + 30¢ at higher volumes. See NMI Pricing.
Also compare: NMI vs Authorize.Net | NMI Payment Gateway overview