Announcing our $21M Series A led by a16z. Read more.
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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
15 Jul 2026
SaaS

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 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

Complete Guide to Incorporation Documents

What are incorporation documents? This guide covers C Corp vs. LLC requirements, global equivalents, and how Sphere helps post-formation.

Jennifer Dunn
10 Apr 2026
Regional Guides

How is VAT Calculated? Step-by-Step Guide

Learn how VAT is calculated step by step: formulas, examples, and how to account for input/output VAT. Perfect for SaaS teams and global sellers.

Jennifer Dunn
10 Apr 2026
Indirect Tax

Can I Verify a Tax ID Number? | Full Guide

Learn how to verify tax ID numbers (EIN, SSN, ITIN, VAT) for compliance, fraud prevention, and audits. Real-time tools and global methods included.

Jennifer Dunn
10 Apr 2026
Indirect Tax

Taiwan Sales Tax: Complete VAT Guide for SaaS

How does Taiwan sales tax apply to U.S. SaaS? We cover the 5% rate, key exemptions, e-invoicing rules, and what automated compliance solutions you can choose.

Jennifer Dunn
10 Apr 2026
Regional Guides

Is SaaS Taxable in New York? Yes—Here’s Why

New York treats most SaaS subscriptions as taxable software. Learn about NY sales tax law for SaaS, including when to charge tax, how to register & file returns, and ways to stay compliant.

Jennifer Dunn
10 Apr 2026
Regional Guides

What Is Import Tax & How Is It Calculated?

What is import tax? Learn how tariffs and customs duties affect goods, costs, and compliance. A must-read for SaaS, tech, and global businesses.

Jennifer Dunn
10 Apr 2026
Indirect Tax

E-Invoicing Regulations: What to Know

E-invoicing mandates are accelerating worldwide—and U.S.-based SaaS companies can’t afford to ignore them. Learn key compliance requirements, global rollout timelines, and how automation helps you stay ahead of penalties and delays.

Ken Boyd
10 Apr 2026
Regional Guides

Reverse Charge VAT Explained: What It Is & How It Works

Learn how reverse charge VAT helps shift tax reporting to the buyer, cut down on foreign registrations, and simplify global tax compliance.

Jennifer Dunn
10 Apr 2026
Indirect Tax
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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.

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