# Charge

Charge is Plock's core billing module and is enabled on every account. It powers the full subscription and invoicing lifecycle — from connecting your data sources and defining products, through subscription management, to invoice generation and accounting dispatch.

**What Charge covers:**

* **Data sources & blueprints**: Connect your databases or APIs and define how Plock pulls consumption data for each product
* **Products & price plans**: Define what you sell and how you price it — fixed fees, usage-based, tiered, or hybrid models
* **Subscriptions**: Manage the commercial relationship with each customer, including billing intervals, scheduled changes, rebates, minimum commitments, and price indexation
* **Invoicing**: Automatic invoice generation for in-advance and in-arrears billing, overage, one-off charges, and mid-period compensation
* **Accounting integration**: Dispatch invoices directly to your ERP (Fortnox, Microsoft Business Central, Netvisor, Kleer) with optional accrual instructions for deferred and accrued revenue
* **Reporting**: MRR, ARR, CMRR, NRR, GRR, and revenue projections — all updated in real time as usage data flows in

The guides in this documentation cover Charge features in detail.