Announcing our $21M Series A led by a16z. Read more.
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
10 Apr 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
10 Apr 2026
SaaS

Input VAT vs Output VAT: Refunds, Rules, Returns

A practical guide to input VAT vs output VAT for SaaS finance teams, covering reclaim rules, VAT liability, cash flow, and filing automation.

Jennifer Dunn
29 Apr 2026
Indirect Tax

VeriFactu Spain: What It Is, Who Must Comply, and 2027 Deadlines

Learn what VeriFactu is, who must comply, the 2027 deadlines, technical requirements, exemptions, and how to prepare for Spain's certified billing regulation.

Jennifer Dunn
29 Apr 2026
Regional Guides

E-Invoicing in Poland: A Complete How-To Guide

Prepare for e-invoicing in Poland with a clear KSeF timeline, technical requirements, exemptions, and a smarter way to connect invoices to VAT returns.

Jennifer Dunn
29 Apr 2026
Regional Guides

Preparing Your Business for E-Invoicing in Belgium

Belgium will require e-invoicing for B2B transactions by 2026. Learn the rules, timelines, and how to simplify compliance with automation.

Jennifer Dunn
29 Apr 2026
Regional Guides

501(c)(3) Sales Tax Exemption: What Nonprofits Need to Know by State

Are 501(c)(3) organizations exempt from sales tax? Learn how exemptions work, state-by-state differences, certificates, and compliance risks.

Jennifer Dunn
15 Apr 2026
Indirect Tax

Direct Pay Permit: How It Works and Who Needs It

Direct pay permit guide for SaaS finance teams: learn how direct pay works, what purchases qualify, and how to invoice permit customers without errors.

Jennifer Dunn
15 Apr 2026
Indirect Tax

What is a Voluntary Disclosure Agreement and Why Use It?

A clear guide to voluntary disclosure agreement programs, including eligibility, VDA process, tax due, and how businesses fix noncompliance.

Jennifer Dunn
15 Apr 2026
Indirect Tax

Top 8 Leading Sales Tax Compliance Software in the US (2026)

Leading US sales tax compliance tools compared. Discover which software fits your SaaS or e-commerce needs, from automation to remittance.

Jennifer Dunn
15 Apr 2026
Tools

Top Customs Compliance Software for Global Companies in 2026

Learn how customs compliance software streamlines cross-border workflows, from automated declarations to tariff management, avoiding costly errors.

Jennifer Dunn
15 Apr 2026
Tools

New Zealand GST Rate for SaaS (2026 Guide)

NZ GST rules explained for SaaS: 15% rate, when to register, filing steps, and how Sphere simplifies global tax compliance with automation.

Jennifer Dunn
15 Apr 2026
Regional Guides

9 Best TaxJar Alternatives for Global Sales Tax Compliance in 2026

Frustrated with TaxJar? Compare the 9 top alternatives out there. Explore pricing, features, and find the best choice for your growing business.

Jennifer Dunn
15 Apr 2026
Tools
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