# Learn

## SaaS Payments

### Embedded Components: A Platform’s Payment UX Layer  
Key takeaways Every software platform adding payments has to solve the UX problem: what the payment form looks like, what happens when  
[12 min read](/content/learn/saas-payments/embedded-components-how-a-payment-ux-library-changes-what-a-platform-can-ship/index.html)

### Interchange Fees and Interchange Optimization for Software Platforms  
Key takeaways Most software platforms treat interchange as something that happens to them. The rate is set centrally, and no one in  
[10 min read](/content/learn/saas-payments/interchange-optimization-software-platforms/index.html)

### What Is Payment Orchestration?  
Key takeaways A homeowners association platform runs its April dues. One processor encounters a speed bump, part of the batch soft-declines, and  
[8 min read](/content/learn/saas-payments/what-is-payment-orchestration/index.html)

### AI Merchant Onboarding: How to Speed Up Merchant Approvals  
Key takeaways A merchant signs up, uploads documents, and waits. For many software platforms, that wait is where the deal quietly dies,  
[8 min read](/content/learn/intelligent-payments/ai-merchant-onboarding/index.html)

### What Is a Card Account Updater? A Guide for SaaS Platforms Adding Embedded Payments  
Key takeaways Recurring billing rests on one assumption: that the card on file still works the next time it’s charged. It often  
[8 min read](/content/learn/saas-payments/card-account-updater/index.html)

### Financial Accounts for Payment Platforms: A Guide  
Key takeaways Most payment platforms already show merchants a balance: the money they have earned but not yet swept to their external  
[11 min read](/content/learn/saas-payments/financial-accounts-banking-style-products-on-your-payments-infrastructure/index.html)

### MCP for Payments: How AI Agents Use Your Fintech API  
Key takeaways MCP is the open standard that lets AI agents use your payments API directly, the way your developers do today.  
[10 min read](/content/learn/intelligent-payments/mcp-for-payments/index.html)

### White label payment gateway: 2026 guide for SaaS platforms  
Key takeaways: A white-label payment gateway is payment infrastructure your vertical SaaS platform rebrands as its own, so your software customers onboard,  
[6 min read](/content/learn/payfac/white-label-payment-gateway-2026-guide-for-saas-platforms/index.html)

### Vendor onboarding for Pay Out: W-9, banking, and preferences  
Key Takeaways Vendor onboarding collects four data categories: identity and tax (W-9 or W-8), banking, payment method preferences, and contact information. Each  
[17 min read](/content/learn/accounts-payable/vendor-onboarding-for-pay-out-collecting-w9-banking-and-payment-preferences/index.html)

### Underwriting in Payments: What It Is and Who Makes the Call  
Key takeaways Underwriting is a credit, fraud, and regulatory decision combined. It exists because everyone downstream of a card transaction is extending  
[9 min read](/content/learn/saas-payments/underwriting-in-payments-what-it-is-and-who-makes-the-call/index.html)

### SaaS Payments Processing: A Guide to the Basics  
Key takeaways SaaS payment processing moves a customer’s money into your software customer’s account through a chain of banks and networks, each  
[10 min read](/content/learn/saas-payments/saas-payment-processing-guide/index.html)

### Intelligent ACH: Predicting Returns Before They Happen  
Key takeaways Intelligent ACH uses machine learning to predict which ACH transactions are likely to return before they are submitted, so a  
[13 min read](/content/learn/ach-and-returns/intelligent-ach-using-ml-to-predict-returns-before-they-happen/index.html)