billing-automation

Automated billing systems for recurring payments, invoicing, subscription lifecycle, and dunning management. Master automated billing systems including recurring billing, invoice generation, dunning management, proration, and tax calculation. Common Intervals: Automated process to recover failed payments through: Adjusting charges when: - Manages complete subscription lifecycle including trial periods, activation, plan changes, cancellation, and pause/resume workflows - Handles failed payment recovery through configurable dunning workflows with retry schedules, customer notifications, and grace periods - Calculates prorated charges for mid-cycle plan upgrades, downgrades, and seat changes with day-based adjustments - Supports usage-based billing with tiered, per-unit, and volume pricing models alongside fixed subscription charges - Includes tax calculation for multiple jurisdictions (US sales tax, EU VAT, Australian GST) and invoice generation in HTML and PDF formats - Implementing SaaS subscription billing - Automating invoice generation and delivery - Managing failed payment recovery (dunning) - Calculating prorated charges for plan changes - Handling sales tax, VAT, and GST - Processing usage-based billing - Managing billing cycles and renewals - Monthly (most common for SaaS) - Annual (discounted long-term) - Quarterly - Weekly - Custom (usage-based, per-seat) - Retry...