Startup
Sphere
AI-native global tax compliance for companies selling across borders: sales tax, VAT and GST registrations, calculations, filings and remittance, priced from $100 per region per month.
| Founded | 2022, San Francisco |
|---|---|
| Founders | Nicholas Rudder (CEO and CFO; formerly Macquarie and PwC) |
| Stage | Series A |
| Total funding | About $25m: the $21m Series A and a $4.3m seed raised as ScholarSite |
| Last round | Series A, $21m, November 2025, led by Andreessen Horowitz with Y Combinator and Felicis |
| What it does | End-to-end indirect tax compliance across jurisdictions, expanding into withholding tax, e-invoicing and tariffs under a compliance engine it calls TRAM |
| Traction | Customers include ElevenLabs, Replit, Lovable and Runway AI |
| Pricing | Starter $100 per region per month for under 10 regions and up to 50,000 transactions, with a per-transaction fee above that and some registration fees passed on; Growth (10+ regions) on quote |
| Markets | Global; more than 130 jurisdictions |
| Peers | Anrok, Numeral, Fonoa, Avalara, Quaderno |
Funding
- Announced rounds
- US$21m
- Round
- Series A, US$21m, November 2025, led by Andreessen Horowitz
Why it matters
Sphere raised $21 million from a16z in late 2025 and has signed the AI companies expanding fastest abroad, including ElevenLabs and Lovable. Its $100 per region Starter price, with a transaction fee only above 50,000 transactions, is a direct challenge to the usage-based pricing of Avalara and Vertex.
Part of Accountio’s accounting technology coverage.
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