NMI Processor List — 150+ Supported Payment Processors

Most payment gateways force merchants onto a single processor relationship — switch gateway, switch processor. NMI takes a different approach: 150+ pre-built processor connections, so merchants pick the acquirer that gives them the best pricing or vertical fit without changing gateway.

For ISO partners, this is huge: one gateway integration, multiple processor relationships, flexibility to match each merchant to the right acquirer. For SaaS platforms embedding payments, it means your customers aren't locked into one processor either.

The processor list grows continuously as NMI certifies new acquirers — both regional banks expanding into payments and specialized vertical processors (high-risk, cannabis, B2B AR).

Top-tier US processors with strong NMI integration:

TSYS — one of the largest US processors, full integration including TSYS Express settlement.
Fiserv (First Data) — Omaha and Nashville platforms, full gateway certification.
Worldpay (FIS) — direct integration to the Worldpay platform.
Elavon (US Bank) — Converge and direct platform connections.
Chase Paymentech (Orbital) — direct Orbital gateway integration.
Global Payments — multi-platform support including former TSYS Heartland.
Heartland (Global Payments) — legacy Heartland systems still supported.
Adyen — full Adyen connector for international merchants.
Square — limited integration via NMI partner programs.

ISOs typically pick a primary processor per merchant based on interchange pricing, vertical fit (e.g., high-risk merchants prefer specific processors), and operational preference.

European NMI processor support spans:

Worldpay UK — full UK acquiring.
Barclays/Barclaycard — UK and select EU markets.
Elavon Europe — UK, Ireland, Germany, France.
Stripe — supported as a processor connector for EU merchants on the NMI gateway.
Adyen Europe — multi-currency, multi-country support.
Checkout.com — EU and UK integration.
Six Payment Services (Worldline) — Switzerland and DACH region.
Nets — Nordic markets.

PSD2 SCA (Strong Customer Authentication) compliance is built into NMI's EU processor integrations — 3DS 2.0 challenges happen at the gateway layer without merchant code changes.

NMI supports processors that specialize in high-risk verticals (firearms, cannabis-related, nutraceuticals, debt collection, dating, gambling, adult):

Esquire Bank — high-risk specialty.
EMB (eMerchantBroker) — high-risk and offshore.
PaymentCloud — connects via NMI for high-risk verticals.
Durango Merchant Services — high-risk specialty.
SMB Global — international high-risk.
Soar Payments — high-risk specialty.

Cannabis-adjacent and CBD merchants use these processors more commonly than the top-tier banks (which typically don't board cannabis merchants directly).

Asia-Pacific and international processor support includes:

NAB (National Australia Bank) — AU/NZ.
Westpac — AU.
Bambora Asia — multi-country APAC.
Cybersource (Visa) — global, multi-currency.
Bluepay — Canada and US.
Moneris — Canada.
Latitude Pay — AU buy-now-pay-later.

For multi-region merchants, NMI handles currency conversion at the processor level — merchants charge in local currency where supported.

Selecting the right processor on NMI depends on:

1. Geographic coverage — pick a processor that settles to your country / currency.
2. Vertical risk profile — high-risk verticals need specialty processors that will underwrite them.
3. Interchange pricing — interchange-plus tiers vary by processor; ISOs negotiate rates.
4. Settlement timing — some processors settle next-day, others 2-3 days.
5. Existing relationship — if you already bank with Chase, Chase Paymentech may simplify reconciliation.
6. EMV device compatibility — different processors certify different terminal hardware.

ISO partners typically present 2-3 processor options to each merchant during onboarding. Talk to a NMI partner for processor recommendations matched to your situation.