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ACI Worldwide logo

ACI Worldwide

Real-time payments

A payment systems software company powering infrastructure for banks and payment processors globally. ACI Worldwide enables real-time payment networks including FedNow, Zelle, and UK Faster Payments, processing over 671 billion transactions annually. Built for financial institutions requiring enterprise-grade payment switching and fraud management.

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VS
NMI logo

NMI

Payment aggregators and ISV partners

Industry-leading white-label payment gateway integrating with 200+ payment processors and 125+ shopping carts. NMI enables payment aggregators and ISVs to offer comprehensive payment solutions under their own brand.

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Detailed Comparison

Side-by-side feature breakdown

Fees
ACI Worldwide

Contact for pricing

NMI

Custom pricing for white-label implementations

Category
ACI Worldwide
traditional
NMI
baas
Available Regions
ACI Worldwide
North AmericaEuropeAsiaLatin AmericaOceaniaAfrica
NMI
North AmericaEuropeAsiasoutheast-asiaOceaniaLatin AmericaAfricaMiddle East
Key Features
ACI Worldwide
Enterprise
Instant Payments
NMI
SDKs & Libraries
ACI Worldwide

3 Available

NMI

0 Available

Payment Methods
ACI Worldwide

22 Supported

NMI

5 Supported

Common Ground

Shared Regions

North AmericaEuropeAsiaLatin AmericaOceaniaAfrica

When to Choose ACI Worldwide

Choose ACI Worldwide if you need features like Enterprise or Instant Payments, or you want a broader feature set. With fees of Contact for pricing, it's ideal for businesses focused on real-time payments.

When to Choose NMI

Choose NMI if your business operates in southeast-asia or Middle East. With fees of Custom pricing for white-label implementations, it's ideal for businesses focused on payment aggregators and isv partners.

Frequently Asked Questions

What is the difference between ACI Worldwide and NMI?

ACI Worldwide is best for real-time payments, while NMI is best for payment aggregators and isv partners. ACI Worldwide charges Contact for pricing and NMI charges Custom pricing for white-label implementations. They differ in supported features, regions, and payment methods.

Which is cheaper, ACI Worldwide or NMI?

ACI Worldwide charges Contact for pricing while NMI charges Custom pricing for white-label implementations. The best value depends on your transaction volume, business type, and required features. Compare their full fee structures for your specific use case.

Can I use both ACI Worldwide and NMI together?

Yes, many businesses use multiple payment providers for redundancy, regional coverage, or to offer more payment methods. ACI Worldwide and NMI can complement each other depending on your needs.

How do ACI Worldwide and NMI differ in their focus?

ACI Worldwide is a traditional payment provider, while NMI focuses on baas solutions. This means they serve different market segments and may have different strengths.