Hybrid Billing

This page explains how Hetzner Data Center Core bills for services across all three families — Cloud, Storage Box, and Dedicated. It is written for administrators who configure product pricing and for anyone reviewing an invoice that includes add-on charges.

#The hybrid billing model

Every service uses a fixed plan fee as its base charge — the recurring price (monthly or annual) set on the WHMCS product. On top of that, some families add usage-based add-on charges for resources that go beyond what the plan includes, such as CPU, RAM, or outbound traffic where applicable.

1. Fixed base plan — the recurring price you set on the WHMCS product. This covers the service itself and any resource allowance included in the plan.
2. Usage-based add-on / overage fees — charges added automatically when a service's actual usage exceeds its included allowance during a billing period.

#How overage is calculated (Cloud)

For Hetzner Cloud servers, the addon compares actual outbound traffic against the traffic allowance included in the server's plan:

• The included traffic allowance is read directly from Hetzner for each server.
• Usage above the included allowance is billed at a per-GB overage price that the administrator sets on the product.
• If the overage price is set to 0, no overage is charged and the service bills at the fixed plan fee only.

All traffic is measured in decimal gigabytes (1 TB = 1,000 GB).

#How invoices reflect base + overage

• The fixed plan fee is invoiced through WHMCS's normal recurring billing cycle, the same as any other product.
• Overage charges, where applicable, are added as a separate billable item once per billing month, so the invoice clearly separates the base plan from usage-based add-on charges.
• The addon tracks which month has already been billed for each service so a customer is never charged twice for the same period.
• The billable item description includes a breakdown of usage versus the included allowance, so both the admin and the customer can see exactly why an overage charge was applied.

#Where to configure billing per product

Usage-based add-on pricing and markup are configured per product, in each family's own settings page:

Each of these settings pages also covers the markup percentage applied when importing an existing Hetzner resource into WHMCS, which determines the base price suggested for that service.

#Next step

See Client Area Overview for what customers can see about their own usage and billing status.