APEX SALES TAX RESOURCES

Sales tax insights for e-commerce businesses

Practical guidance on US sales-tax nexus, registration, filing, and historical compliance. Use these guides as a starting point and verify state-specific rules before acting.

October 12, 2026 · 6 min read

AI and Sales Tax Audits: What E-Commerce Businesses Should Prepare For

Learn how data analytics and AI can support tax compliance and audit selection, and how online sellers can prepare accurate, consistent sales-tax records.

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October 12, 2026 · 7 min read

Sales Tax Nexus Explained: Physical Nexus vs. Economic Nexus

Understand physical and economic sales-tax nexus, common e-commerce triggers, marketplace inventory, and the steps to take before registering in a state.

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October 12, 2026 · 7 min read

Sales Tax Voluntary Disclosure Agreements (VDAs): A Guide for E-Commerce Sellers

Learn how sales-tax VDAs work, typical benefits and limits, lookback periods, eligibility risks, and the records to prepare before approaching a state.

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October 12, 2026 · 9 min read

2026 State-by-State Economic Nexus Thresholds for Sales Tax

A 2026 reference chart of remote-seller economic nexus sales and transaction thresholds, with important notes on measurement periods and state-specific rules.

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Need help reviewing your sales-tax exposure?

Apex Sales Tax supports e-commerce businesses with nexus reviews, registrations, returns, VDAs, and historical compliance.

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