Revolut API Integration (2026): The Complete Developer Guide

Revolut API Integration (2026): The Complete Developer Guide If you’re integrating Revolut in 2026, the first (and most important) step is choosing the right Revolut API family. Revolut doesn’t offer one “do-everything” API; instead, it provides distinct APIs depending on whether you’re automating your own business finances, accepting payments, or building regulated open-banking experiences. This guide is built to be more useful than typical “Revolut API overview” posts: you’ll get a clear decision framework, an implementation blueprint, and battle-tested best practices for security, webhooks, reconciliation, and going live. Table of Contents Choosing the Right Revolut API What You Can Build with Revolut APIs (Use Cases) Integration Architecture (Recommended Approach) Prerequisites and Access Authentication and Security Models (Business vs Merchant vs Open Banking) Step-by-Step: Revolut Business API Integration Step-by-Step: Revolut Merchant API Integration (Accept Payments) Step-by-Step: Revolut Open Banking API Integration Webhooks, Events, and Reliable Processing Reconciliation and Accounting Workflow Testing, Sandbox Strategy, and Rollout Checklist Common Mistakes to Avoid Comparison Table: Business API vs Merchant API vs Open Banking API Conclusion FAQ (8–12) Key Takeaways Pick the correct API first: Business API (internal automation), Merchant API (payment acceptance), Open Banking API (regulated access & payment initiation). Treat auth + webhooks as first-class: most failed integrations come from token handling, signature verification, and idempotency issues. Design for reconciliation from day one: store Revolut IDs, map them to internal ledger entries, and build an event-driven “source of truth.” Use official docs + OpenAPI specs: they’re the most reliable reference for endpoints and schemas. Choosing the Right Revolut API Revolut’s developer portal organizes capabilities into three primary lanes: Manage Accounts (Business API), Accept Payments (Merchant API), and Build Banking Apps (Open Banking API). 1) Revolut Business API Use this when your company has a Revolut Business account and you want to automate internal operations: Pull balances and transactions for reconciliation Create counterparties and initiate payouts Automate FX operations and treasury workflows Revolut positions this as automation for your own business processes. 2) Revolut Merchant API Use this when you want to accept online payments (e-commerce / checkout flows), manage orders, and handle payment lifecycle events. Revolut’s docs explicitly describe Merchant API as an e-commerce payments solution, including hosted checkout flows. 3) Revolut Open Banking API Use this if you’re building a banking app or