1. Polar
percentageOpen-source monetization for developers
4% + $0.40 per transaction (lowest MoR fees on the market). Merchant of record — VAT handled.
Next.js is the default React framework for web SaaS. Pick a billing tool with a TypeScript SDK, webhooks you can run on Edge, and a checkout that doesn't fight your routing.
11 tools matched
App Router server actions and route handlers map cleanly to billing webhooks. The right billing tool gives you typed events and a customer portal you don't have to build.
Open-source monetization for developers
4% + $0.40 per transaction (lowest MoR fees on the market). Merchant of record — VAT handled.
Payments, subscriptions and MoR for indie SaaS
5% + $0.50 per transaction. Acquired by Stripe 2024.. Merchant of record — VAT handled.
Complete payments infrastructure for SaaS
5% + $0.50 per transaction. Merchant of record — VAT handled.
Subscription billing with full developer control
0.5–0.8% on top of standard Stripe fees. You handle taxes.. DIY tax handling.
Open-source metering and usage-based billing
Self-hosted: free. Cloud: from $100/month. DIY tax handling.
Global payments and MoR for software companies
5.9% + $0.95 per transaction (or custom rate). Merchant of record — VAT handled.
Usage-based billing for AI and SaaS
Custom pricing (contact sales). DIY tax handling.
B2B SaaS billing and revenue management
Custom pricing (contact sales). DIY tax handling.
Subscription management for scaling SaaS
From $249/month. DIY tax handling.
Usage-based billing for enterprise
Custom pricing (enterprise). DIY tax handling.
Real-time metering and usage-based billing
From $500/month. DIY tax handling.
| Tool | Pricing | MoR | A/B | Ease | Fees |
|---|---|---|---|---|---|
| Polar | 4% + $0.40 per transaction (lowest MoR fees on the market) | Yes | — | 5/5 | 5/5 |
| Lemon Squeezy | 5% + $0.50 per transaction. Acquired by Stripe 2024. | Yes | — | 5/5 | 4/5 |
| Paddle | 5% + $0.50 per transaction | Yes | — | 3/5 | 3/5 |
| Stripe Billing | 0.5–0.8% on top of standard Stripe fees. You handle taxes. | — | — | 2/5 | 4/5 |
| Lago | Self-hosted: free. Cloud: from $100/month | — | — | 2/5 | 5/5 |
| FastSpring | 5.9% + $0.95 per transaction (or custom rate) | Yes | — | 3/5 | 2/5 |
| Orb | Custom pricing (contact sales) | — | — | 2/5 | 3/5 |
| Maxio | Custom pricing (contact sales) | — | — | 2/5 | 2/5 |
| Chargebee | From $249/month | — | — | 2/5 | 2/5 |
| Metronome | Custom pricing (enterprise) | — | — | 2/5 | 2/5 |
| Amberflo | From $500/month | — | — | 2/5 | 2/5 |
Polar — the best balance of ease, conversion, and fees. Open-source monetization for developers.
For most of this audience we recommend Lemon Squeezy — Fastest path to charging for a SaaS.
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