Kintsugi vs. FastSpring

Kintsugi is the AI-powered sales tax engine built for high-growth SaaS and eCommerce businesses that need compliance without the complexity. From automated nexus monitoring to full-service filing, Kintsugi helps finance, RevOps, and tax teams stay ahead of risk—without relying on spreadsheets or legacy tools. Track physical and economic nexus in real time, get alerts when new thresholds are met, and audit historical exposure effortlessly. With one-click, no-code integrations with QuickBooks, Stripe, Chargebee, BigCommerce, and an open API, setup is fast and flexible.

FastSpring is the leading merchant of record for global SaaS & software companies and gaming studios – powering over a billion dollars in worldwide transactions every year. We'll manage your checkout, VAT, sales tax, compliance, and more, freeing you to focus on what you do best – building great products and games! For two decades, FastSpring has been a payment provider you can use to sell games or in-game items on your website, web shop, or embedded directly into your game with fully customizable and branded checkouts just for you.