NMI

Web · Windows · Linux · Android · iPhone · API

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Freedom report

Two barsScore 5.8

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely5 of 6 device platforms
DocumentedPlans, terms and facts published

NMI is ranked #8 of 62 in payment gateways on Freedom251. It runs on Android, API, iOS, Linux, Web, Windows.

Compared on payment gateways

Payment methods: Visa, Mastercard, Discover, American Express, Diners Club, China UnionPay, JCB, Apple Pay, Google Pay, ACH and bank transfers
Recurring payments: Yes
Marketplace payments: Yes
API and SDK coverage: api_and_sdk

Best NMI alternatives

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The record

What it does: NMI provides an embedded payments platform for accepting and managing payments across online, in-store, mobile, and self-service channels.
Who it serves: NMI describes its platform as serving ISOs, software companies, and payment facilitators; merchants typically work with a certified reseller or ISO partner.
White labeling: Partners can brand the gateway and portals with their own logos, colors, and custom URLs.
Payment features: The gateway supports recurring billing, batch processing, webhooks, QR code payment links, transaction routing, and a virtual terminal.
Integrations: NMI says it integrates with more than 200 payment processors and 125+ shopping carts.
Accounting integrations: Bill Connect integrates payment acceptance with accounting software including QuickBooks and Xero.
Developer tools: NMI offers a payment API, hosted payment pages, SDKs for iOS, Android, Windows, and Linux, and a browser-based customer-present solution that runs on any operating system.
PCI compliance: NMI says it has maintained PCI DSS Level 1 certification since 2005 and is audited annually by independent security assessors.
Security features: Gateway security options include point-to-point encryption, remote key injection, and remote terminal management.
PCI scope limit: NMI says merchants using its Payment API should have passed a PCI vulnerability scan before using that integration method.
Support: NMI provides a support portal for searching answers, raising support requests, and tracking existing requests.
Pricing model: NMI describes partner gateway pricing in terms of a buy rate and partner-defined merchant fees, and says applicable fees are set out in a proposal or fee schedule.
Company history: NMI says its payment gateway has been a cornerstone of its payments offering since 2001.
Payments: The gateway supports online, in-store, self-service, and mobile payments, including EMV and contactless payments.

Where it ranks on Freedom251

Best Payment Gateways in 2026#8 of 62
Best Embedded Payments Platforms in 2026#3 of 28
Best Virtual Terminal Software in 2026#7 of 28

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Sources

nmi.com/resources/payments-101/faq/· checked 4 Oct 2026
nmi.com/products/payment-gateway/· checked 4 Oct 2026
nmi.com/developers/sdks-apis/· checked 4 Oct 2026
nmi.com/developers/security/· checked 4 Oct 2026
nmi.com/about-us/contact-us/· checked 4 Oct 2026
nmi.com/solutions/payment-gateway-features/· checked 4 Oct 2026
docs.nmi.com/docs/online-payments-overview· checked 4 Oct 2026
nmi.com· checked 4 Oct 2026
docs.nmi.com/docs/third-party-integrations· checked 4 Oct 2026
docs.nmi.com/docs/payment-component· checked 4 Oct 2026
support.nmi.com/hc/en-gb· checked 4 Oct 2026