An invoice records what you billed, to whom, for what, and whether it was paid.
Creating
Create manually, from a quote, or from delivered work when time tracking is enabled. Invoices carry a number, an account, line items, currency, issue date, and due date.
Recurring invoices
For retainers and subscriptions, define the schedule once. Recurring invoices generate automatically on their cadence; you review before sending unless you have explicitly delegated that.
Tracking
Status moves from draft to sent to paid, with overdue derived from due date. Overdue invoices raise a signal, and Cortex can predict late payment based on an account's history before the due date arrives.
Multi-currency
Invoices can be issued in different currencies with recorded exchange rates, which keeps reporting coherent when you bill internationally.
Important: Sending an invoice is an outward-facing action. It stays behind approval at most autonomy levels regardless of contract settings, because an invoice sent in error cannot be unsent.