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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
10 Apr 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
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

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

Virginia Sales Tax: Rates, Rules & Compliance Guide

Learn Virginia sales tax rates by region, exemptions, grocery tax rules, special categories, and filing requirements in this comprehensive guide.

Jennifer Dunn
30 May 2026
Regional Guides

Michigan Sales Tax: Rates, Rules & Compliance Guide

Everything SaaS and digital businesses need to know about Michigan sales tax: rates, nexus rules, registration, filing, and remittance via MTO.

Jennifer Dunn
28 May 2026
Regional Guides

Indiana Sales Tax: Rates, Rules & Compliance Guide

Everything SaaS and digital businesses need to know about Indiana sales tax: rates, nexus rules, registration, filing, and remittance via INTIME.

Jennifer Dunn
28 May 2026
Regional Guides

Nevada Sales Tax: Rates, Rules & Compliance Guide

Learn Nevada sales tax rates by county, what's taxable, exemptions, nexus rules, and how to register, file, and remit as a business selling into Nevada.

Jennifer Dunn
26 May 2026
Regional Guides

10-Step SOX Compliance Checklist for Tech Companies

Learn how to build a SOX compliance program with internal audits, financial reporting, documentation, automation, and access controls.

Nathan Collier
26 May 2026
Indirect Tax

Illinois Sales Tax: Rates, Rules & Compliance Guide

Learn Illinois sales tax rates, local add-ons, exemptions, nexus rules, and the Chicago PPLTT for SaaS businesses. Covers combined rates, filing, remittance.

Jennifer Dunn
21 May 2026
Regional Guides

Exemption Certificate Management for SaaS

Understand the full process of exemption certificate management and how automation helps SaaS companies simplify tax compliance and stay audit-ready.

Jennifer Dunn
21 May 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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