Compare Flute vs. NMI Payments

Flute is a flexible payment processing platform built for growing businesses, software companies, associations, and payment partners that need multiple ways to accept and manage money. Businesses can accept payments in person, online, over the phone, through mobile devices, or through embedded payment experiences within their own software. Supported capabilities include card processing, tap-to-pay, QR payments, ACH, virtual terminals, hosted payment pages, invoicing, recurring billing, and digital wallet payments. Flute offers portable and mounted payment terminals while also allowing businesses to use compatible existing devices and mobile phones. Its management tools provide centralized dashboards, reporting, merchant onboarding, customer management, and workflow automation across payment operations. Recurring billing and secure tokenized payment storage support subscription businesses and companies that process repeat purchases. Instant payout capabilities give eligible merchants faster access to funds from daily card sales, while additional working capital tools can support business growth. Security features include encrypted payment data, fraud prevention, network tokenization, and protection against risks such as card testing and chargeback abuse. Flute also offers APIs, SDKs, developer documentation, and embedded payment infrastructure for SaaS platforms, ISOs, associations, and other partners that want to integrate payments into their products or portfolios.

NMI Payments gives developers, SaaS builders, ISVs and ISOs a simple path to embedded payments. As a full-stack processor, acquirer, and technology partner, NMI enables you to integrate, brand, and manage payment acceptance within your platform—without becoming a PayFac or building complex infrastructure. The platform combines flexibility, scalability, and speed, offering white-labeled payments infrastructure that keeps your brand front and center. With omnichannel support for in-store, online, in-app, and unattended payments, you can deliver a consistent merchant experience across every touchpoint. NMI also manages onboarding, compliance, and risk, freeing your team to focus on innovation and customer growth. Developer-First Experience NMI’s developer-first environment puts full control in your hands. Build, test, and launch payments in a modern sandbox with clear documentation and ready-to-use code snippets. Guided onboarding flows and API recipes simplify integration, while low-code and no-code tools accelerate deployment. Business users can evaluate monetization options with instant revenue calculators and self-service sign-up. Whether you’re embedding payments for the first time or scaling across channels, NMI helps you go live faster, stay compliant, and grow with confidence