The Zoho Billing API is a REST-based programming interface that allows developers to integrate subscription management capabilities into external systems and custom applications. Through the API, you can create and manage customers, create and modify subscriptions, retrieve invoice and payment data, apply coupons, record usage for metered billing, and receive event notifications via webhooks, all without logging into the Zoho Billing interface.
Typical integrations using the Zoho Billing API include: automating subscription creation when a customer signs up through a custom checkout; syncing subscription status to an internal business intelligence dashboard; triggering access provisioning or deprovisioning in your product when subscriptions are activated or cancelled; submitting metered usage data at the end of each period; and building a custom billing admin interface on top of Zoho Billing’s data layer for internal operations teams.
The Zoho Billing API uses OAuth 2.0 for authentication. Developers register an application in the Zoho API Console, obtain credentials, and exchange them for access tokens. API documentation with complete endpoint references, request examples, response schemas, and error codes is available at developer.zoho.com. Zoho also provides client SDKs in multiple programming languages to accelerate integration development.
Yes. The Zoho Billing API supports creating one-time invoices and charges for customers alongside their recurring subscriptions. This is useful for setup fees, professional services charges, or one-time add-ons that are not part of the recurring subscription plan. One-time charges appear in the customer’s billing history alongside their subscription invoices.
Yes. The Zoho Billing API is subject to rate limits that vary by plan tier. The limits are designed to handle normal integration usage patterns. For high-volume applications (such as reporting usage data for thousands of subscribers simultaneously), Zoho recommends batching API calls and using exponential backoff for error handling. Check the current API documentation for the specific rate limits applicable to your Zoho Billing plan.
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