Billing software automates the invoicing process and tracks the services or products sold. It generates professional invoices, calculates taxes, manages recurring subscriptions, and tracks payment status. Advanced systems also handle dunning (failed payments), revenue reporting, and integration with accounting tools. Billing software can be customized to include things like automated reminders, multi-currency support, analytics dashboards, user access controls, and integration with various business systems, making it a comprehensive solution tailored to your needs.