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

South Korea VAT Guide for Digital Services

Your guide to South Korea VAT for digital service providers. Step-by-step tips on registration, filing, invoices, and reverse charge rules.

Jennifer Dunn
30 Jul 2026
Regional Guides

New Jersey Sales Tax Guide for SaaS and Digital Businesses

Complete guide to New Jersey sales tax: 6.625% flat rate, no local add-ons, SaaS taxability rules, information services, nexus thresholds, filing deadlines.

Jennifer Dunn
07 Jul 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
06 Jul 2026
Indirect Tax

Global SaaS 101: What Is Transfer Pricing?

What is transfer pricing for SaaS? Learn arm’s length rules, OECD/IRS methods, docs, and risks, plus tools to scale compliance across tax jurisdictions.

Jennifer Dunn
06 Jul 2026
Indirect Tax

Form 10F (India): Avoid Double Taxation – Complete Guide

Form 10F India is a tax form for non-residents to claim DTAA benefits and avoid double taxation on Indian income. Learn who needs to file, required documents, filing steps, and consequences of non-compliance.

Jennifer Dunn
06 Jul 2026
Indirect Tax

Do US Companies Have a VAT Number?

Confused about VAT vs. sales tax? Learn why U.S. startups selling in the EU, UK, or Canada need to understand VAT rules, numbers, and registration triggers.

Jennifer Dunn
04 Jul 2026
Regional Guides

What Is ViDA? Real-Time VAT Reporting Explained

ViDA is changing how VAT works in the EU. Read about OSS, platform rules, and what SaaS companies must do now to be ready.

Jennifer Dunn
04 Jul 2026
Indirect Tax

Arizona Sales Tax: TPT Rates, Rules & Compliance Guide

Arizona sales tax guide: TPT rates by city, exemptions, use tax, nexus rules, filing due dates, and compliance steps for businesses selling into Arizona.

Jennifer Dunn
04 Jul 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
04 Jul 2026
Regional Guides

Sales Tax Payable: Definition, Journal Entries & Examples

Learn what sales tax payable is, how to record it with journal entries, and where it appears on the balance sheet. Includes examples and formulas.

Jennifer Dunn
04 Jul 2026
Indirect Tax

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
04 Jul 2026
Regional Guides
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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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