About
Sphere is an AI-native cross-border compliance engine that automates global tax compliance for businesses. It offers direct integrations with over 100 tax authorities worldwide, enabling automated registration, calculation, filing, and remittance. The company's proprietary AI-native Tax Review and Assessment Model (TRAM) codifies and monitors global tax law to ensure accuracy.
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Key facts
- Website
- getsphere.com
- Headquarters
- San Francisco, United States
- Founded
- 2021
- Employees
- 32
- Total funding
- $21M (Series A)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 18 Nov 2025 | Series A | $21M | Another VC |
Tech stack
Detected on getsphere.com, last scanned 20 Sept 2026. Run your own scan
- Frontend
- Next.js
- Payments
- Apple Pay
- Observability
- incident.io
- CMS / Builders
- GitBook
- CDN
- Vercel
- Email provider
- Google Workspace
Sphere scores 64. Does yours?
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Frequently asked
Is Sphere trustworthy and reputable?
StartupHub's Data Trust & Reputation score for Sphere is 80 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
How much funding has Sphere raised?
Sphere has raised a total of $21M in funding. The most recent round on record is Series A.
How many employees does Sphere have?
Sphere has approximately 32 people on record.
Public record
SEC filings, insider activity, nonprofit links and pay benchmarks for Sphere
