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
30 Jul 2026
SaaS

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

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

Use Tax vs Sales Tax: What You Need to Know Today

Use tax vs sales tax explained: learn when each applies, real examples, and how businesses report and remit taxes across states.

Jennifer Dunn
28 Mar 2026
Indirect Tax

How U.S. Tax Treaties Lower Withholding Tax

Learn how US tax treaties reduce global withholding tax. A CFO’s guide to treaty benefits, IRS forms, and SaaS-specific compliance strategies.

Jennifer Dunn
15 Mar 2026
Regional Guides

Numeral vs Avalara: Side-by-Side Comparison

Compare Numeral vs Avalara tax compliance software with features, integrations, pricing, and use cases to find the best solution for your business.

Jennifer Dunn
14 Mar 2026
Tools

Numeral vs Anrok: Pros, Cons & Key Differences

Numeral or Anrok? See how each handles real-time sales tax, remittance, integrations, and global tax compliance for SaaS businesses.

Jennifer Dunn
14 Mar 2026
Tools

How to Navigate Withholding Tax in Singapore

Learn how withholding tax works in Singapore, including IRAS rates, filing steps, DTA relief, due dates, and penalties for non-resident payments.

Jennifer Dunn
14 Mar 2026
Regional Guides

AI Tax Preparation for Global Compliance

Explore AI tax preparation, top tools, and how ai-powered tax software automates tax returns, filing, and global tax compliance.

Jennifer Dunn
06 Mar 2026
AI

AI-Powered ERP Solutions for SaaS Companies

Explore top AI-powered ERP solutions, key benefits, and how modern finance teams use automation and predictive analytics to scale globally.

Jennifer Dunn
06 Mar 2026
AI

Withholding Tax Philippines for SaaS

Learn how the withholding tax Philippines rules apply to non-residents, BIR filings, tax treaties, and cross-border payments. Stay compliant and reduce risk.

Jennifer Dunn
06 Mar 2026
Regional Guides

Top Payroll Tax Compliance Software Tools for SaaS Companies

Automate payrotoolsll tax filings and stay compliant globally. Compare top payroll tax software and learn how Sphere helps SaaS CFOs reduce audit risk.

Jennifer Dunn
03 Mar 2026
SaaS
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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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