FastStar replaces the dozen tools creators and SaaS teams usually glue together. Below is a deeper look at each capability — billing, checkout, tax, settlement and the developer tooling — and how it works in both fully managed and Direct/PSP modes.
Run any recurring revenue model from a single dashboard. Create plans with monthly, annual or custom intervals, offer free or paid trials, and convert trials automatically. Usage-based and metered billing let you charge for seats, API calls, storage or any unit you define.
Proration handles upgrades and downgrades mid-cycle so customers are always charged fairly. Automatic renewals, smart retries for failed payments (dunning) and proactive renewal reminders keep churn low. Every subscription event — created, renewed, upgraded, canceled — is delivered as a webhook so your systems stay in sync.
Sell single products, license keys, digital downloads, lifetime deals and bundles without setting up recurring billing. Generate a shareable payment link in seconds, drop it in a tweet, newsletter or store, and start collecting.
Each purchase can carry license entitlements and download access, delivered automatically after payment. Combine one-time and subscription products in the same catalog and the same checkout.
A conversion-optimized, fully hosted checkout that you open in one line of code. It supports major cards, 3D Secure authentication and popular local payment methods, automatically presented in the buyer’s currency and language.
The checkout is mobile-first and responsive, embeds cleanly in a popup, redirect or mobile WebView, and is fully white-label: it carries your brand, never Stripe’s. Your buyers see FastStar-powered pages under your name — no third-party logos, no external redirects.
In fully managed mode, FastStar is the seller of record. We determine the correct VAT, GST or sales tax based on the buyer’s location, collect it at checkout, and remit it to the relevant authorities across the EU 27, the UK, the US, Canada, Australia, New Zealand and 90+ tax regions.
You never register for foreign tax numbers, file overseas returns, or track changing rates. The revenue credited to your balance is already net of tax — clean income you can rely on.
Proceeds from every sale enter our settlement system and are credited to your balance after taxes and fees. We pay out your available balance on a predictable schedule through a compliant global payout network, with multi-currency support to your bank account.
A clear ledger shows every transaction, fee, tax line and payout so reconciliation is straightforward, and webhooks notify your systems when a payout is initiated or paid.
Our zero-dependency JavaScript SDK opens the hosted checkout as a popup or redirect with a single call, and emits events such as checkout.success so your front end can react instantly. For native mobile, the Flutter SDK provides a WebView component with unified callbacks.
Behind the SDK sits a REST API covering payments, subscriptions, customers and payouts, plus event-driven webhooks for reliable reconciliation. Crucially, you integrate only with FastStar — never directly with Stripe — and never need a Stripe account.
Create a free account, integrate in minutes, and leave global payments and tax compliance to FastStar.