Streamline Billing, Manage Subscriptions, Collect Payments

Kill Bill has automated the world's most complex billing problems.

And it’s open-source, so it’s yours.

Kill Bill Overview Video
"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


Kill Bill has been the leading open-source billing and payment platform for the past 10 years.
Organizations around the globe, from startups to public companies, trust Kill Bill to invoice billions every year.

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Years of Development

Code Contributors

Code Commits

Companies using Kill Bill open-source billing and payment platform

What You Can Do with Kill Bill

Scale your billing and payment infrastructure and grow your business. Access real-time analytics and financial reports. Control your business and client data and avoid vendor lock-in.  

Your customer’s data belongs to you. You’ll have real-time access to it with basic or custom reports.

 Test various billing models to see which is most profitable for your business. Run trials and easily accommodate even the briefest promotional discounts.

Kill Bill is free and includes all of the basic billing and payment features. Even if you need to create your own customizations, Kill Bill is still a very affordable solution.

Your business doesn’t need to rely on the uptime or processing speed of a SaaS provider. You choose where to run Kill Bill from.

Don’t want to use the third-party tax provider that’s married to your payment processor? With Kill Bill, you can use your own. Ditto for fraud protection solutions and credit card account updaters.

Use plug-ins to implement specific pieces of logic, such as accepting alternate payments from e-currencies like Bitcoin and Alt-Coins.

Kill Bill is not an all-in-one solution. Instead, it is highly modularized, enabling you to disable functionality you don’t need or replace functionality with one of your existing systems.

On premise or in the cloud, Kill Bill will scale as your business grows. You can also start with Kill Bill in one business area and slowly migrate it to other areas. 

What Kill Bill Users Say

At first we only used a small set of Kill Bill’s features. […] Now that our business has grown, we are currently integrating with the subscription and billing capabilities and are finding it very powerful.

Galen P.

Chief Technology Officer, Real Estate company with 1-10 employees

Kill Bill has played a major role in the launch of our SaaS project. It helped manage and master the payment process, while keeping it on our servers and under our management.

Greg O.

Chief Executive Officer, Computer Software company with 1-10 employees

We did not have to build our own billing engine or buy a commercial one. Out of the box, working billing engine with tons of features. Open source with great community backing.

Dave O.

Engineering Manager, Insurance company with 5,001-10,000 employees

Skip the pain of building your own subscriptions platform. Kill Bill offers a powerful platform we will use to manage the complexity of subscription billing, which will allow us to release features faster with fewer bugs.

Chris Z.

Tech Lead, Computer Software company with 1,001-5,000 employees

We needed a long-term solution for billing and payments for our subscription services. We looked everywhere – commercial, open-source, hosted, on-premise, etc. Nothing came close to the comprehensive feature-set of Kill Bill.

Majeed G.

Chief Executive Officer, Unspecified industry

We are a SaaS company using Kill Bill to manage billing of our 250,000 subscribers. Ability to control billing allows far better control over billing fees as well as capability to optimize in any way your business may see fit.

Jo J.

Product Manager, Information Technology & Services company with 5,001-10,000 employees

Receive a quick overview of Kill Bill’s features and benefits.

Get acquainted with the Kill Bill back-office interface, Kaui.

Start using Kill Bill here!

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