Home/Online Payments/NMI Gateway
NMI Online Payments · Gateway

The modular payment gateway,
built around how you sell.

NMI is a flexible, widely-integrated gateway that lets you turn on only the pieces you need — online checkout, in-store, mobile and self-service — with tokenization, recurring billing, fraud tools and 200+ processor connections. Operating since 2001 and certified across the US, UK and EU.

Omnichannel 200+ processors
1.2M+
active merchants
6.5B+
transactions a year
200+
payment processors
125+
shopping-cart integrations
Modular by design

Turn on only what you need

NMI is built as building blocks. Start with the gateway and add modules as you grow — no rip-and-replace, no paying for features you don't use.

1

Connect

Plug into 200+ processors and 125+ shopping carts, or migrate from another gateway with the drop-in Gateway Emulator — no software rewrite.

2

Compose

Add the modules that fit: Customer Vault, recurring billing, invoicing, fraud screening, Level III data, and reporting — à la carte.

3

Scale

Manage multiple MIDs on one account, route transactions intelligently, and sell online, in-store, mobile and self-service from a single gateway.

Everything in the box

The modules that power NMI

Sell Everywhere

Online, in-store, mobile and self-service — EMV and contactless from a single gateway.

Customer Vault

Tokenizes cardholder data so you can repeat transactions without ever storing card numbers.

Recurring Billing

Subscriptions and scheduled payments with the Automatic Card Updater to cut declines.

Electronic Invoicing

Send an invoice in minutes and collect payment in one click, with reminders and tracking.

Level III Advantage

Auto-qualifies B2B and B2G transactions for lower Level II/III interchange rates.

Advanced Fraud Protection

AI-driven, real-time risk screening with customizable rules and Payer Authentication.

Gateway Emulator

Migrate from another gateway without reworking software — drop-in API compatibility.

Multi-MID & Routing

Manage multiple MIDs on one account with consolidated reporting and smart transaction routing.

Connects to what you already use

Built to plug in anywhere

Hosted Payment Page
Virtual Terminal
Mobile SDKs
QuickBooks
125+ Shopping Carts
ACH / eCheck
Three-Step Redirect API
White-Label for ISVs
Pricing through NextPay

Simple gateway pricing, your processing matched

Run NMI on your NextPay merchant account — one bill, one support line. We'll review your statement and match or beat your effective processing rate.

$10/mo
gateway access
/txn
per transaction

Modules like Customer Vault, recurring billing and fraud may carry add-on fees — ask us for a tailored quote.

Run NMI on NextPay's best rate

Build the gateway that fits your business

We'll set up NMI with the right modules and transparent processing — match or beat your current rate, and a real person helps you launch.