How does the dunning management system function?

It provides a structured retry schedule with specific intervals, automated email notification triggers, and grace period logic to maximize payment recovery before cancellation.

Does it support international tax compliance?

Yes, it features a TaxCalculator framework designed to handle regional variations including VAT in Europe, GST in Australia, and state-specific Sales Tax in the US.

How is proration handled for mid-cycle plan changes?

It uses a mathematical approach to credit unused time on existing plans and charge for the remaining time on new plans, calculated precisely down to the day.

Can this skill handle both fixed and usage-based billing?

Yes, the skill includes standardized patterns for both standard recurring intervals and dynamic usage-based line items during the invoice generation process.

Billing & Subscription Automation

Name: Billing & Subscription Automation
Author: gwickman

bygwickman

0•

E-commerce Solutions

Automates complex billing workflows including subscription lifecycles, invoicing, dunning management, and prorated charges.

This skill provides a robust framework for managing the entire subscription lifecycle, from initial trial periods to automated renewals and cancellations. It addresses critical edge cases in payment processing such as dunning management for failed payments, precise proration for mid-cycle plan changes, and regional tax calculations. By implementing these standardized patterns, developers can build scalable SaaS billing systems that handle usage-based charges, automated invoicing, and grace periods with high reliability while maintaining clean code architecture.

Key Features

01Subscription lifecycle management (Trial, Active, Past Due, Canceled)

02Proration logic for plan upgrades, downgrades, and seat changes

030 GitHub stars

04Automated dunning workflows for failed payment recovery

05Automated invoicing with support for usage-based billing

06Multi-jurisdiction tax calculation (VAT, GST, Sales Tax)

Use Cases

01Managing complex seat-based pricing models with mid-cycle adjustments

02Implementing automated payment retry logic and customer notification systems

03Building a recurring SaaS subscription platform with trial-to-paid conversion

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add gwickman/auto-dev-test-target-1 billing-automation

For use in Claude.ai and ChatGPT

Download Skill