Kill Bill powers billing and payments for companies from growth-stage to F500, deployed in tightly controlled environments, handling billions in revenue across B2B, B2C, and B2B2C business models.
Who This Is For
Built for companies scaling from $10M to $250M+ ARR
Kill Bill is proven at scale. It is trusted by growth-stage startups and Fortune 500 companies that handle billions in recurring revenue.
Engineering Leaders
You need a billing system that won't become a bottleneck as complexity grows. Kill Bill gives you full control: deploy it in your infrastructure, customize the logic, and extend it without waiting on vendor roadmaps.
Finance & Operations Teams
You need accurate revenue recognition, audit trails, and integrations with your existing financial stack. Kill Bill handles complex billing scenarios, including usage-based, prepaid, postpaid, multi-tenant, and white-label models. It maintains strong compliance and auditability.
Growth-Stage Companies
You're scaling fast and vendor bills are scaling faster. Kill Bill offers predictable costs: no per-transaction fees, no revenue-based pricing. You own the infrastructure, you control the costs.
Enterprise-Ready with Aviate
Scaling fast but cannot dedicate a full platform team? Aviate bridges the gap. It pairs the open-source Kill Bill core with a production-ready accelerator so you launch quickly. Fixed pricing (not a percentage of revenue) and far cheaper than commercial offerings. With Kill Bill and Aviate: you plan once, own the revenue stack, and avoid surprises later.
Product
Battle-tested at scale. Extensible by design. Yours to control.
Whether you're billing for SaaS subscriptions, usage-based AI tokens, multi-tenant white-label platforms with thousands of tenants, or complex prepaid/postpaid models, Kill Bill provides battle-tested primitives proven at global scale.
Kill Bill can fulfill the billing and payment needs of nearly any online business:
Scale your billing infrastructure without scaling vendor bills: predictable costs as you grow
Access real-time analytics and financial reports
Own your data and destiny: in-house deployment with full auditability and zero vendor lock-in
Subscription Billing
Experience unrivalled versatility with Kill Bill Subscription Billing, giving you complete control over subscriptions and pricing models, including usage-based billing, to support your unique business needs.
Payment Platform
Take control of your payments strategy with Kill Bill, easily integrating with payment gateways, issuing banks, and fraud tools via its robust partner ecosystem and extensible plugin interface.
Admin User Interface
Kaui is a robust, user-friendly back-office web-based UI for customer success, finance, RevOps, and developer teams to easily configure price books and manage subscriptions & payments.
Features
You can deploy, customize
and extend Kill Bill
This is all possible because Kill Bill is open-source.
Headless payment integrations
Support for all major payment gateways and methods, as well as alternative payment methods and e-currencies.
Native integration with Adyen, Stripe, Braintree, and PayPal. For more information on payment plugins in general, see the Payment Plugin Guide.
Own Your Billing Data
Avoid lock-in: Kill Bill gives you complete ownership of your billing data, as opposed to alternative SaaS solutions.
Unleash the Full Potential with Customizable Plugins
Kill Bill Plugins enable developers to create isolated code that can interact with the Kill Bill platform in various ways.
This includes receiving bus events, making API calls to Kill Bill, and being called by the platform through Plugin APIs after proper registration.
“Kill Bill has been amazing to work with. They gave us a solid billing and payment platform flexible enough to support all of the Carfax use cases that other solutions costing 6 figures were not able to provide.”
Matt Cervarich
Director of Application Services
Customer since 2015
Customer since 2015
FAQs
The Ultimate Kill Bill Trio
Learn more about how Kill Bill can scale your business
About Kill Bill
Even if you think you’re intimately familiar with Kill Bill, you might want to read over these answers.
Kill Bill Features
We edited and updated the answers to the most frequently asked questions about Kill Bill’s features.
General Questions About Kill Bill
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Start Exploring
Kill Bill Features
Make sure you check out Kill Bill Support Options, Community, documentation guide, and live demo.
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