Announcing our $21M Series A led by a16z. RSVP to our "AI x Regulation" Event @ a16z SF HQ.
Product
Cross Border Compliance
End-to-end indirect tax compliance automation
AI Native Tax Engine
Tax Review and Assessment Model
About
Resources
Live Coverage Map
Real-time global tax coverage
Global Blog
International tax, AI, and compliance updates.
Knowledge Base
Sphere Guides and documentation
PricingJoin Us
Stay Updated
Let's Talk
Log In
Let's Talk
Stay Informed

Enter your email address to stay up to date on new releases

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
blogs

Sphere's Global Compliance Blog

Find regional guides, tax developments and thought leadership at the intersection of AI and tax here

Building TRAM | The World’s First Tax Review and Assessment Model

Sphere's AI-native tax research system that interprets global indirect tax rules, builds product taxonomies, and automates taxability and rate determinations.

Alex Bowcut
23 Nov 2025
AI

Sphere Raises $21M Series A Led by Andreessen Horowitz

Sphere secured a $21M Series A led by a16z to build the first AI-native cross-border compliance engine, meeting rising demand for scalable global tax solutions.

Nick Rudder
18 Nov 2025
Announcements

What Is a Tax Exempt Certificate?

What is a tax exempt certificate? Learn how SaaS companies use them, who qualifies, and how to stay compliant across U.S. states and beyond.

Jennifer Dunn
20 Feb 2026
Indirect Tax

What Is a VAT/GST ID? Global Tax Guide for SaaS

Do you need a VAT or GST ID for global SaaS sales? This guide covers registration, verification, and compliance tips every CFO should know.

Jennifer Dunn
20 Feb 2026
SaaS

What Is a Tax Exempt Certificate?

What is a tax exempt certificate? Learn how SaaS companies use them, who qualifies, and how to stay compliant across U.S. states and beyond.

Jennifer Dunn
20 Feb 2026
Indirect Tax

What Is a VAT/GST ID? Global Tax Guide for SaaS

Do you need a VAT or GST ID for global SaaS sales? This guide covers registration, verification, and compliance tips every CFO should know.

Jennifer Dunn
20 Feb 2026
SaaS

Building TRAM | The World’s First Tax Review and Assessment Model

Sphere's AI-native tax research system that interprets global indirect tax rules, builds product taxonomies, and automates taxability and rate determinations.

Alex Bowcut
23 Nov 2025
AI

Sphere Raises $21M Series A Led by Andreessen Horowitz

Sphere secured a $21M Series A led by a16z to build the first AI-native cross-border compliance engine, meeting rising demand for scalable global tax solutions.

Nick Rudder
18 Nov 2025
Announcements

Peppol E-Invoicing Network Compliance Guide

A practical guide to the Peppol E-Invoicing Network covering Peppol BIS standards, interoperability, global adoption, and implementation options.

Jennifer Dunn
02 Apr 2026
Indirect Tax

A Step-by-Step Guide to E-Invoicing in Europe

Learn how e-invoicing in Europe works, which countries have mandates, what ViDA changes, and how businesses should prepare for compliance.

Jennifer Dunn
02 Apr 2026
Regional Guides

VAT vs Sales Tax: How They Work + Examples

Learn the key differences between sales tax vs VAT, how each works, and what global businesses need to manage compliance across jurisdictions.

Jennifer Dunn
02 Apr 2026
Indirect Tax

Permanent Establishment Risk: Triggers and How to Avoid

Understand permanent establishment risk: fixed place, dependent agent, service and project PE, plus how to track exposure and reduce tax liabilities.

Jennifer Dunn
28 Mar 2026
Indirect Tax

Input VAT Explained: Rules, Calculation, Refunds

A practical guide to input VAT, VAT refunds, deduction rules, and how businesses calculate VAT payable or VAT credits across global tax systems.

Jennifer Dunn
28 Mar 2026
Indirect Tax

Top 8 Sales Tax Compliance Companies Compared

Compare top sales tax compliance companies currently. Learn how to manage nexus, tax calculation, filing, and global indirect tax risk at scale.

Jennifer Dunn
28 Mar 2026
SaaS

What Is A Resale Certificate? State Tax Rules

Learn what a resale certificate is, how to obtain one from your state Department of Revenue, and how businesses use them for tax-exempt purchases.

Jennifer Dunn
28 Mar 2026
Indirect Tax
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Make the world

one market

End-to-end compliance automation for sales tax, VAT, and GST. 100+ regions. One platform. Built by 50 people who believe the compliance cost of every transaction should be zero.

Let’s Talk
Backed By
PrivacyTerms