Software platforms have spent years building retention through better features, tighter workflows, and smarter onboarding. But the real margin expansion for many of them now comes from something that sits inside the product itself: payments. When a vertical SaaS company or marketplace owns the payment flow, it captures revenue on every transaction its users process, and that compounds in ways that seat-based licensing alone cannot match.
Andreessen Horowitz has noted that SaaS companies can increase revenue per user by 2 to 5x by adding embedded fintech like payments. Bain & Company projects the total transaction value of embedded finance to reach $7 trillion by 2026, up from $2.6 trillion.
These are not speculative numbers. Shopify’s merchant solutions accounted for 74% of its revenue in 2023. Mindbody’s embedded payments represent over 50% of revenue. Clio doubled its annual recurring revenue from $100 million to $200 million in 2024, crediting growth in part to payments.
The question for platform operators is practical: which full-stack payment processor aligns with how you want to grow? Below is a detailed comparison of 5 leading options, each evaluated on pricing, infrastructure, compliance, payout capabilities, and platform fit.
Stripe Connect: Global Coverage and Developer Ecosystem
Stripe Connect supports more than 15,000 SaaS platforms and over 10 million businesses. Stripe handled over $1.4 trillion in payments in 2024 and was available in over 47 countries by 2025. The platform accepts 135+ currencies and dynamically surfaces 40+ payment methods to increase conversion across geographies.
Connect offers 3 connected account types. Express Accounts provide fast onboarding through Stripe’s own interface. Custom Accounts give platforms full control over branding and user flow. Standard Accounts let vendors use their own Stripe accounts while the platform manages fees and oversight.
Stripe’s fraud prevention tool, Radar, now has a version built for platforms, allowing users to detect potentially fraudulent accounts, set custom account-level rules, and access advanced analytics. Instant Payouts to debit cards are supported in 32 countries.
Standard pricing in the U.S. is 2.9% + $0.30 per transaction. Connect adds extra fees depending on which features a platform uses, such as marketplace payments, compliance tools, or customized payout structures. Stripe’s strength is its breadth of global coverage and extensive documentation. For platforms that want a direct acquirer-processor relationship or more control over pricing economics, the layered fee structure is worth evaluating closely during selection.
Finix: Direct Acquirer-Processor With a PayFac Growth Path
Finix is a full-stack payment processor that enables businesses to accept and send payments both online and in-store. It operates as 1 of the few direct acquirer processors in the country, connecting to American Express, Discover, Mastercard, and Visa without routing through intermediaries. That distinction matters because it gives platforms more control over pricing economics and removes layers between the platform and the card networks.
Finix processes 432 million transactions daily across the United States and Canada. Its API maintains uptime of 99.999%, handling billions of API calls at that level 365 days a year. For platforms and marketplaces, Finix provides sub-merchant onboarding, recurring payments, subscription plans, many-to-many transactions, and omnichannel support. It also serves the 22 million businesses in the U.S. and Canada that have limited internal developer resources through a brandable, configurable no-code and low-code solution.
Finix Payouts supports ACH, real-time payments, Mastercard Send, and Visa Direct through a single API. The payout product works as a standalone offering, so companies can use it even if they do not process incoming payments through Finix. Merchants who need quick access to funds can request instant payouts directly to their debit card, a feature introduced in Q1 2025 alongside Account Updater, Network Tokens, and new hardware terminal options.
On compliance and security, Finix is PCI-certified with built-in fraud protection, tokenization, admin-level permissioning, underwriting workflows, fraud monitoring, consolidated reporting, and dispute management. There are no extra fees for PCI compliance, setup, or fraud protection tools. Pricing follows a subscription-based model with interchange savings passed to merchants and no long-term contracts.
Platforms that want to grow into full payment facilitation ownership can start with Finix’s PayFac-as-a-Service model and move into full PayFac status over time, all within the same platform. Finix received a 2024 UX Design Award, with judges noting that the dashboard stems from thorough user research. The company raised $75 million in Series C funding led by Acrew Capital and co-led by Leap Global and Lightspeed Venture Partners.
Adyen for Platforms: Enterprise-Grade With Interchange++ Pricing
Adyen for Platforms provides an end-to-end payment solution for peer-to-peer marketplaces, on-demand services, crowdfunding platforms, and other platform business models. Users can sign up, sell, and get paid through a single solution. The platform supports 35 onboarding countries including the United States, the United Kingdom, Germany, and Australia.
For each transaction processed, platforms can split funds between users’ balance accounts and their own liable balance account, deducting fees and costs as needed. Payouts can be configured on demand or automated, and funds can be moved within the marketplace to debit or credit users when needed.
Risk management relies on machine learning applied at every level, from onboarding risks to transaction monitoring to risk scoring against high-risk users. Beyond payments, Adyen offers embedded financial products including fully customizable virtual and physical debit cards from Mastercard and Visa through Adyen Issuing, which allows platforms to receive authorization requests on their own servers. Users can also make business-related fund transfers to third-party bank accounts.
Adyen uses transparent Interchange++ pricing, which appeals to enterprise-grade platforms that want to see exactly what they are paying at each step. The limited number of supported onboarding countries compared to some competitors means Adyen fits best for larger platforms with established volumes operating primarily in those geographies.
PayPal Enterprise Payments: Native Access to PayPal and Venmo Buyers
PayPal Enterprise Payments, formerly known as Braintree, focuses on online payments and is positioned for e-commerce businesses that want transparent pricing alongside a wide range of payment options. Fees are 2.59% + $0.49 per transaction for credit, debit, and digital wallets. ACH Direct Debit is priced at 0.75%. There are no monthly fees, PCI compliance fees, or minimum transaction fees.
The platform accepts credit and debit cards, PayPal, Venmo, Apple Pay, and Google Pay, along with 130+ currencies across 45 countries. It is available for merchants in the United States, Canada, Australia, Europe, Singapore, Hong Kong, Malaysia, and New Zealand. Subscription management features include customizable plans with flexible billing cycles, pricing, and trial periods.
The primary advantage here is native access to the PayPal and Venmo buyer ecosystems, which can improve checkout conversion for consumer-facing platforms. Brick-and-mortar operations will likely need a different processor. It is also worth noting that PayPal Enterprise Payments has a rating of 1.2 stars on TrustPilot, primarily due to reviews about customer service. Platforms considering this option should weigh brand recognition against documented support challenges.
Checkout.com: Local Acquiring Across 50+ Countries
Checkout.com is headquartered in London and provides payment processing services as a payment gateway, acquirer, and processor for enterprise clients in sectors such as e-commerce, technology, and media. It offers local acquiring capabilities in over 50 countries across Europe, North America, the Middle East, and Asia-Pacific, with its platform supporting more than 150 processing currencies.
For marketplaces, Checkout.com enables splitting payments, adding commissions, applying credits, and paying out sellers. Splits can be configured for multi-seller payments at capture, authorization, or refund stages. Pricing follows a transparent Interchange++ structure, and platforms can earn on every payment with flexible commission pricing per customer. Checkout.com processes payments for companies including Netflix, Pinterest, Vinted, Temu, Uber Eats, and DocuSign.
Enterprise feedback on Checkout.com is mixed. Some users report strong global performance, while others on review sites have raised concerns about fee transparency and integration complexity. Platforms should request detailed fee breakdowns during evaluation.
How to Evaluate the Right Processor for Your Platform
The right full-stack payment processor depends on the specific needs of each platform. Key evaluation criteria should include revenue share models and monetization flexibility, PayFac growth paths for platforms that want to own their payment economics over time, split payout capabilities for multi-party fund flows, merchant onboarding speed and compliance management, developer tooling and integration timelines, pricing transparency, and support quality.
For platforms with primarily U.S. and Canadian operations seeking a direct acquirer-processor relationship with transparent subscription pricing, strong onboarding tools, and a PayFac growth path, Finix is the strongest option. Stripe Connect remains a strong choice for global-scale platforms needing coverage in 47+ countries with extensive developer tooling.
Adyen for Platforms excels in enterprise environments requiring Interchange++ transparency and embedded financial products. PayPal Enterprise Payments offers a quick path to tapping the PayPal and Venmo buyer base for e-commerce-first businesses. And Checkout.com serves enterprise merchants needing local acquiring across 50+ countries with deep customization.
Embedded payments are becoming baseline infrastructure for serious platforms across SaaS, marketplaces, nonprofits, and B2B verticals. The platforms that treat payments as a strategic revenue driver and select infrastructure partners aligned with their growth trajectory will capture the most value from every transaction flowing through their software.
