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

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
11 Jun 2026
Indirect Tax

Chicago Sales Tax Guide for SaaS & Digital Goods

Discover how Chicago sales tax affects SaaS. Get clarity on PPLTT, Amusement Tax, nexus thresholds, IL registration, and compliance tips.

Jennifer Dunn
11 Jun 2026
Regional Guides

Best AI Tax Software for 2025: Top 4 Tools Reviewed

Discover the best AI tax software for 2025. Compare Sphere, TaxGPT, Kintsugi & more for tax prep, filing, code assignment, nexus tracking & compliance.

Jennifer Dunn
11 Jun 2026
Tools
AI

AI Tools for Tax Professionals: Automate Smarter, Not Harder

See how AI is streamlining tax compliance in 2026. Discover top tools for automation, risk analysis, and global filings to find the best fit for your tax needs.

Jennifer Dunn
11 Jun 2026
AI
Tools

Avalara Alternatives: Best Tax Compliance Software in 2026

Exploring Avalara alternatives? Compare the best tax compliance software for 2026, including tools for sales tax automation, global VAT, and transparent pricing.

Nick Rudder
11 Jun 2026
Tools

Spain SII: Complete Guide to Real-Time VAT Reporting

Learn all about Spain's SII (Suministro Inmediato de Información) VAT reporting system—compliance, 4-day deadlines, submission requirements, and benefits.

Jennifer Dunn
14 May 2026
Regional Guides

Multiple Points of Use Exemption: A Complete Guide

Read how multiple points of use (MPU) exemption lets businesses self-assess sales tax by location. Covers state rules, claiming steps, and allocation methods.

09 May 2026
Indirect Tax

VAT in Europe: Rates, Rules & Compliance Guide for Businesses

Your guide to VAT in Europe: how it works, current rates by country, registration rules, OSS, ViDA, and what non-resident businesses must do to stay compliant.

Jennifer Dunn
09 May 2026
Regional Guides

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

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
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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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