Tax
State Tax Nexus
Quick definition
Connection between a business and a state that triggers state tax obligations — can be physical, economic, or affiliate.
Nexus is the legal threshold for state tax obligations. Physical nexus: employees, office, inventory, or property in the state. Economic nexus (post-Wayfair, 2018): typically $100K+ in sales or 200+ transactions per state per year, triggering sales tax obligations. Affiliate nexus: connection via a related party. Each state defines nexus differently. Multi-state SaaS startups commonly hit economic nexus in 10+ states by year 2.
Related tax terms
R&D Tax Credit
Federal credit for qualified research expenses, usable against payroll tax by startups.
Delaware Franchise Tax
Annual tax for Delaware corporations, often quoted wildly too high if calculated incorrectly.
Nexus (Sales Tax)
The connection with a state that triggers a tax-collection obligation.
QSBS (Qualified Small Business Stock)
Tax exemption for gains on qualifying startup stock held 5+ years.
Frequently asked questions
- What is State Tax Nexus?
- Nexus is the legal threshold for state tax obligations. Physical nexus: employees, office, inventory, or property in the state. Economic nexus (post-Wayfair, 2018): typically $100K+ in sales or 200+ transactions per state per year, triggering sales tax obligations. Affiliate nexus: connection via a related party. Each state defines nexus differently. Multi-state SaaS startups commonly hit economic nexus in 10+ states by year 2.
- Why is State Tax Nexus important for startups?
- State Tax Nexus is a tax concept that matters for startup founders because it directly affects fundraising readiness, financial decision-making, or operational discipline at the stage where mistakes are expensive to undo. Founders who understand it have a meaningfully easier time in diligence, board meetings, and investor conversations.
- What category does State Tax Nexus belong to?
- State Tax Nexus is a Tax term in the StartupCFO finance glossary — alongside other tax concepts that founders, CFOs, and accountants use in daily startup operations and reporting.
- Where can I learn more about State Tax Nexus?
- Beyond this definition, see the related tax terms below, or explore StartupCFO's insights and tools that put State Tax Nexus in context. For specific situations, talk to a fractional CFO who can walk through your numbers.
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