An add-on in Zoho Billing is an optional product or service feature that customers can purchase alongside their primary subscription plan. Add-ons allow businesses to offer a modular pricing structure where customers pay a base plan fee plus additional charges for features or services they choose to enable. Examples include additional user seats, premium support, extra storage, or an advanced feature module.
Add-ons are configured in the Zoho Billing product catalogue and associated with one or more plans. When a customer subscribes, they can select applicable add-ons during checkout or add them later through the customer portal or via a direct sales process. Add-ons are billed at the same interval as the base plan, unless configured with a different frequency, and appear as separate line items on the customer’s invoice.
Add-ons are a core tool for expanding revenue from existing customers without requiring them to upgrade to a higher-tier plan. By offering targeted add-ons for features that are valuable to specific customer segments, businesses can increase the average revenue per user incrementally. Zoho Billing tracks add-on revenue separately, making it easy to analyse which add-ons drive the most expansion revenue.
Yes. Customers can add or remove add-ons at any time through the customer portal or via an admin action in Zoho Billing. Changes mid-cycle are handled with proration: the customer is charged a prorated amount for the remaining days if they add an add-on, or credited for any unused days if they remove one, keeping the billing fair regardless of when changes are made.
In Zoho Billing, add-ons are typically billed at the same interval as the subscription plan. However, some configurations may allow one-time add-on charges that are billed immediately rather than recurring with the plan. Check Zoho Billing’s current add-on configuration options for the exact billing interval flexibility available in your setup.
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