What is a economic nexus?

A sales or transaction threshold that creates a legal obligation to collect and remit tax in a state, established by the 2018 South Dakota v. Wayfair Supreme Court decision.

Who uses one?

Finance and RevOps teams automating sales tax and VAT compliance

What does it cost?

Pricing varies. The cheapest provider in our Top 11 starts around $100/mo. See the cheapest providers ranked.

How do I pick one?

Read the full methodology for our 9.4-point scoring framework, then look at the canonical 11 Best Tax Automation Software 2026 (Ranked by Accuracy & Filing). If you want a slice of the ranking by price, fit, or compliance, jump to: cheapest · highest-rated · fastest onboarding.

Source: Top 11 11 Best Tax Automation Software 2026 (Ranked by Accuracy & Filing), verified July 9, 2026.