webusage based
Kill Bill — Open-source subscription billing and payments
Battle-tested open source billing platform. More complex than Lago but more mature. Requires significant technical resources to set up and maintain. Free if self-hosted.
Visit Kill Bill→Pricing
Open source: free (self-hosted). Cloud: from $250/month.
Best for
- open source
- self hosted
- Enterprise
- Usage-based pricing
- developers
- SaaS
- web
- Usage-based billing
- AI products
- Teams scaling up
- Low fees
Pros
- ✓Competitive fees as you scale
- ✓Advanced billing (usage, dunning, entitlements)
Cons
- —Steeper learning curve
- —You handle tax registrations yourself
- —Limited conversion / paywall optimization
Alternatives
LagoSelf-hosted: free. Cloud: from $100/month
Open-source metering and usage-based billing
Compare Kill Bill vs Lago →Stripe Billing0.5–0.8% on top of standard Stripe fees. You handle taxes.
Subscription billing with full developer control
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