Kill Bill Overview
Everything You Need to Bill, Collect, and Report
Most billing platforms force you to choose between flexibility and speed. Kill Bill gives you both — powering B2B SaaS, B2C platforms, and B2B2C marketplaces with usage-based billing, multi-tenant support, and 15+ years of production resilience.
Trusted by companies processing billions in revenue
Process Billing Events in Real Time
Stop waiting for batch jobs to finish. Kill Bill creates invoices and starts payment processing the moment an event is triggered — so your data is always current and your customers never wait.
Extend Anything Through Plugins
Connect new payment gateways, integrate third-party vendors, or build custom business logic — all through Kill Bill's plugin architecture, without modifying core code.
Stay Audit-Ready Without Extra Tooling
Every change is tracked automatically. View the full history of any object in Kaui — who changed it, when, and why — so you're always prepared for audits.
Run Multiple Businesses from One Instance
Support multiple stores, locations, or test environments from a single deployment — with full data isolation between tenants.
Adapt Data Models to Your Business
Add custom tags and fields to any object — tag a customer as "VIP", flag an account for review, or enrich records with business-specific metadata.
Ready to Transform
Your Billing?
Explore the enterprise sandbox, read the docs, or connect with the Kill Bill community.
Support
Work directly with the Kill Bill core team
Kill Bill Community
For technical questions, start by asking the Community
Documentation
Organized product documentation library and API Reference
Customization
Work with experts for Kill Bill customization