Unsure where you owe sales or use tax
Run Your Nexus Risk CheckHow online sellers trigger economic nexus and when sales tax registration becomes required.
Multichannel tracking. Rolling thresholds. Marketplace inclusion logic.
Ecommerce economic nexus is created when an online seller exceeds a state’s revenue or transaction threshold, requiring sales tax registration even without physical presence. Most states trigger economic nexus at 100,000 dollars in annual sales, though measurement periods and transaction rules vary.
Online sellers are especially exposed because:
If you are unfamiliar with how thresholds work, review our complete guide to Economic Nexus and compare rules in Economic Nexus by State.
Check My Ecommerce Nexus RiskEcommerce businesses frequently trigger nexus earlier than expected.
Unlike brick and mortar businesses, online sellers:
Because thresholds are state specific, sellers must test each jurisdiction independently using state level nexus rules. Manual tracking becomes unreliable once you sell into more than five states.
Most states use a 100,000 dollar revenue threshold. Some states also apply transaction thresholds. High volume ecommerce sellers with low average order value may trigger transaction thresholds before revenue limits. To determine exactly when your revenue crossed a threshold, use the threshold testing tool. If your state uses trailing measurement rules, the Rolling 12 Month Nexus Tracker applies rolling calculations automatically.
Many ecommerce brands sell through:
Marketplace facilitator laws require platforms to collect tax in many states, but marketplace revenue may still count toward economic nexus thresholds. If you sell on multiple channels, you must separate direct and marketplace revenue and apply state specific inclusion rules. For a detailed legal breakdown, see Marketplace Nexus. To automatically separate channels and apply inclusion logic, use the Marketplace Nexus Tracker.
Ecommerce sellers using fulfillment centers may create physical nexus in states where inventory is stored. Physical presence can create registration obligations even before revenue thresholds are exceeded. To understand how inventory and employees impact obligations, review Physical vs Economic Nexus. Online sellers must evaluate both economic and physical triggers simultaneously.
Fast growing ecommerce brands often cross thresholds mid year. Rolling 12 month states evaluate the prior 12 consecutive months of sales at any given time. If you only review calendar year totals, you may miss a trigger month. Continuous monitoring using automated threshold tracking prevents delayed registration and back tax exposure.
Once economic nexus is established:
If registration is delayed, historical liability may exist. To determine whether you are currently required to register, see When Do I Have to Register for Sales Tax or use the Nexus Registration Readiness Tool. If thresholds were exceeded in prior periods, estimate potential liability using the Sales Tax Liability Estimator and calculate historical exposure with the Back Sales Tax Calculator.
Managing ecommerce nexus across multiple states requires a centralized view.
A unified Sales Tax Exposure Dashboard provides:
For ongoing compliance, continuous monitoring is essential.
If your online revenue approaches 75,000 dollars in any state, you should evaluate nexus immediately.
Identify trigger states. Apply correct rules. Register with confidence.
Example for Ecommerce page: