Fintech · San Francisco, United States
Sphere
Sphere is an AI-powered cross-border tax compliance platform that automates sales tax, VAT, and GST, building local rails into tax authorities worldwide and the world’s first AI-native tax engine; backed by Felicis Ventures and Y Combinator.
Work at Sphere?
- Location
- San Francisco, United States
- Total raised
- $26M
- Series A · last round Nov '25
- Founded
- 2017
About Sphere
Sphere is an AI-powered cross-border tax compliance platform that helps companies automate sales tax, VAT, and GST obligations. Over the past 1.5 years, Sphere has built local rails into tax authorities in the US and internationally to automate compliance processes. It is building the world's first AI-native tax engine, which will form the foundation for a broader cross-border compliance platform. The company is experiencing 34%+ month-over-month revenue growth and is backed by Felicis Ventures and Y Combinator. Its customer roster includes Eleven Labs, Replit, Windsurf, Runway AI, Fathom, Linktree, Photoroom, Sierra AI, and Zed.
Funding
$26Mtotal raised
- Nov 2025 · Series A$21M
- Dec 2024 · Funding round$5M
Company at a glance
The team at Sphere
Location
Life at Sphere
Frequently asked questions
Sphere is based in San Francisco, United States.
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