Unsure where you owe sales or use tax
Run Your Nexus Risk CheckMost marketplace sales tax mistakes come from assuming platforms handle everything. Amazon and Etsy reduce complexity, but they do not remove your responsibility. Without tracking nexus and separating marketplace and direct sales, businesses either miss obligations or create unnecessary compliance.
Marketplace sellers operate in multiple systems
Each has different tax behavior. Without clarity, mistakes are inevitable.
Understand nexus first: Marketplace sales tax nexus
Amazon collects tax on marketplace sales
But not on:
This creates gaps
Many sellers focus only on marketplace sales
They ignore:
Result:
Most sellers do not track thresholds
Once crossed:
Check thresholds: Economic nexus by state
Using Amazon FBA or 3PL creates physical nexus. Inventory stored in states triggers obligations. Many sellers are unaware
Failing to separate revenue leads to:
You must track both separately
Marketplace laws vary by state. Assuming uniform rules leads to errors.
Understand rules: Marketplace facilitator tax rules
Marketplace sellers often misconfigure direct sales
This leads to:
Fix setup: Ecommerce sales tax setup
Most sellers do not know:
Estimate liability: Sales tax liability calculator
Many sellers adopt automation too soon
This leads to:
See automation: Marketplace sales tax automation
Delaying action is the most expensive mistake
By the time you react:
Check exposure now: Sales Tax Exposure Calculator
Simple framework:
Identify nexus
Economic nexus calculator
Separate marketplace and direct sales
Track revenue by state
Understand facilitator coverage
Automate only when needed
A marketplace seller uses Amazon + Shopify. Assumes Amazon handles tax
Result:
Correct approach:
You are at risk when:
At this stage, mistakes become expensive
Marketplace sales tax mistakes are usually caused by incorrect assumptions about who is responsible for tax. Most sellers rely too heavily on marketplaces and ignore their own obligations. The right approach is to track nexus, separate marketplace and direct sales, and manage compliance based on actual exposure so your business can scale without risk.