Best Billing & Payment APIs
14 tools
Top billing and payment platforms with excellent APIs for subscription management, usage-based pricing, invoicing, and revenue recognition.
01.StripeVERIFIED🔌 MCP★4.227
The industry-standard payment processing platform with subscriptions, invoicing, checkout pages, fraud protection, and an enormous ecosystem of integrations.
02.LagoVERIFIED★526
Open-source usage-based billing platform for automating metering, pricing, and invoicing for B2B SaaS revenue models.
03.Lemon SqueezyVERIFIED🔌 MCP27
Merchant of record platform handling payments, subscriptions, tax compliance, and digital product sales for software companies.
04.ChargebeeVERIFIED★4.427
Subscription billing and revenue management platform that automates recurring billing, invoicing, pricing experiments, and revenue recognition for B2B SaaS.
05.RecurlyVERIFIED★4.124
Subscription management and recurring billing platform for automating subscription lifecycles, payment recovery, and revenue recognition.
06.MaxioVERIFIED★4.324
Subscription billing and revenue management platform for B2B SaaS with usage-based billing, automated revenue recognition, and financial reporting.
07.MetronomeVERIFIED★2.827
Usage-based billing infrastructure for modern SaaS companies with real-time metering, pricing flexibility, and revenue analytics.
08.Gumroad🔌 MCP19.5
Dead-simple platform for selling digital products, memberships, and courses — just upload and share a link, no website needed.
09.FastSpring26
Merchant of record platform handling global payments, subscriptions, tax compliance, and B2B billing for digital product companies.
10.Polar🔌 MCP25
Modern billing infrastructure and Merchant of Record for developers selling digital products, subscriptions, and software globally with automated tax compliance and benefit delivery.
11.Zuora24
Enterprise quote-to-cash and subscription management platform for recurring revenue, usage billing, and revenue recognition automation.
12.Paddle20
Merchant of record payment platform that handles sales tax, VAT, and compliance globally — you focus on product while Paddle handles the money stuff.
13.RevenueCat27
In-app subscription management for mobile apps that handles Apple/Google receipt validation, analytics, and entitlements across iOS and Android.
14.Orb25
Usage-based billing and pricing infrastructure for modern SaaS companies with advanced metering and invoicing capabilities.
FAQ
What is the best payment API for SaaS?
Stripe is the gold standard for SaaS payment APIs, offering comprehensive endpoints for subscriptions, usage-based billing, invoicing, and revenue recognition with excellent documentation and SDKs in every major language. LemonSqueezy provides a simpler alternative for indie developers as a merchant of record handling tax compliance globally. Paddle serves as another merchant-of-record option for mid-market SaaS.
How do billing APIs handle subscription lifecycle events?
Modern billing APIs like Stripe send webhook events for every subscription state change: creation, renewal, upgrade/downgrade, payment failure, cancellation, and expiration. This allows you to automatically provision or deprovision access, send dunning emails for failed payments, trigger win-back campaigns, and update your CRM with revenue data in real time.
Should I use a merchant of record or direct payment processor?
Direct processors like Stripe give you maximum control and lower per-transaction fees but require you to handle tax compliance, VAT/GST collection, and refunds yourself. Merchants of record like LemonSqueezy and Paddle handle global tax compliance, invoicing, and refunds for you at a higher fee. For early-stage products selling globally, a merchant of record saves significant operational complexity.