✓ Trusted by F500 companies processing billions in revenue

Billing infrastructure that scales with you at a fixed price, not a percentage of your revenue.

Deploy in your own infrastructure. Migrate without disruption. No vendor lock-in, ever.
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15+ years in production Billions processed 100K+ subscriptions
See how it works
2 min
  • HP
  • Rakuten
  • Groupon
  • Square
  • Carfax
  • Rocket Lawyer
  • Flywheel
  • Womply
  • Poynt
  • Caravelo
  • Diawi
  • Flashfiber
  • Netstream
  • Iquall Networks
  • Giving Tools
  • SafeKiddo
  • SureVoIP
  • Textellent
Who This Is For

Trusted by growth-stage startups and Fortune 500 companies

Kill Bill is proven at scale — handling billions in recurring revenue across B2B, B2C, and hybrid business models. Deploy in your infrastructure with predictable, fixed pricing.
Engineering Leaders

Full control. Deploy in your infra. Extend without waiting on vendor roadmaps.

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Finance & Ops Teams

Accurate revenue recognition, audit trails, compliance.

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Growth-Stage Companies

No % fees. Predictable costs as you scale.

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Two ways to start

Both built on 100% open-source Kill Bill core
Open Source
Free

Self-hosted. Deploy on your infra via Docker or AWS. Full access to source code and plugins. Community support.

Start Open Source
Aviate - managed
Fixed price

Cloud-hosted, auto-scaling, monitoring included. Catalog API, Metering, Wallet out of the box. Fixed price.

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Enterprise Accelerator

Meet Aviate: production-ready in weeks, not months

Aviate is the proprietary enterprise accelerator built on top of Kill Bill's open-source core. It provides production-grade infrastructure, pre-built integrations, and operational tooling so your team ships billing faster with zero vendor lock-in.
Pre-configured cloud infrastructure with auto-scaling and monitoring
Fixed pricing, never a percentage of your revenue
100% open-source core: migrate away any time with full data portability
Learn about Aviate
Why teams choose Aviate
Time to production
6+ months DIY → Weeks with Aviate
Infrastructure
Build from scratch → Production-ready
Vendor lock-in
Typical SaaS risk → Zero lock-in
Pricing model
% of revenue → Fixed cost
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.
View Subscription Billing

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.
View Payment Platform

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.
View Kaui
Ecosystem

Connect to the tools your business already uses

Kill Bill's plugin architecture integrates with leading payment gateways, tax engines, and cloud infrastructure — or build your own with the open plugin framework.
Need a custom integration? Kill Bill's open plugin framework lets you build connectors for any service.
Testimonials

What our customers say

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 photo
Matt Cervarich
Director of Application Services
Customer since 2015
Kill Bill is one of the best billing systems I have worked with to date.
Colin F.
Technical Director
Ability to optimize in any way your business may see fit.
Jo J.
Product Manager
The peace of mind that all information is within our data center is great.
Majeed G.
CEO
The built-in admin UI (Kaui) is great. Amazing mailing list support and good documentation.
Greg P.
Senior Software Engineer
The system design and feature set allow for easy customization of recurring memberships and payments.
Stephen H.
President
The catalog is a very complete tool, enabling addons, multiple payments, and alignment options.
Matias G.
CEO
FAQs

Learn, explore, and ask

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
It’s time to fluff and refresh Kill Bill’s most frequently asked questions.

Ready to stop paying a percentage of your revenue?

Join 18+ companies from startups to Fortune 500 who chose control over convenience.
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