Do You Have to Collect Sales Tax Where Your 3PL Stores Inventory and What Counts as Nexus?
Inventory at a 3PL, FBA, or POD facility can create sales-tax nexus where it sits and where you sell enough. In Q1, map warehouse locations, test economic thresholds, register only where required, and enable collection in Shopify, Amazon, and marketplaces.
Summary of What This Blog Covers
- What physical nexus and economic nexus mean for online sellers in Q1
- How 3PL, FBA, and POD storage quietly create sales-tax duties
- Five-step decision tree + Q1 checklist to register, configure platforms, and file on time
What Physical Nexus Really Means
Physical presence (office, employee, inventory, warehouse) creates nexus. 3PL/FBA/POD storage = physical nexus in that state. You must register, collect, and remit sales tax.
What Economic Nexus Really Means
$100k sales or 200 transactions in many states = economic nexus (even no physical presence). Marketplace facilitator laws shift collection to platforms in some cases — but verify.
How 3PL, FBA, and POD Storage Create Duties
Inventory stored in another state = physical nexus there. You must register, collect sales tax on sales into that state, and file returns. FBA/POD often triggers this automatically.
Five-Step Decision Tree for Registration
- List all warehouse locations (3PL, FBA, POD)
- Check sales by state (thresholds: $100k or 200 transactions)
- Confirm marketplace collection (Amazon, Shopify Markets, etc.)
- Register only where required (avoid over-registration)
- Enable collection in platforms + file returns on time
Q1 Sales-Tax Checklist (copy-paste)
☐ Warehouse locations mapped
☐ Sales by state reviewed (thresholds checked)
☐ Marketplace collection confirmed
☐ States registered where required
☐ Collection enabled in Shopify/Amazon
☐ First returns filed or scheduled
☐ Nexus review scheduled quarterly
Book an eCommerce Accounting & Sales Tax Review
Insogna maps warehouse locations, tests economic thresholds, registers only where required, and enables collection in Shopify, Amazon, and marketplaces. We build the plan, set the switches, and run the filing calendar so you stay compliant without guesswork. Whether you searched “tax preparation services,” “tax accountant,” “tax advisor,” “CPA in Austin, Texas,” or “CPA taxes for e-commerce sales-tax help,” book today and file with confidence.
Frequently Asked Questions
1) Does 3PL/FBA inventory always create nexus?
Yes — physical presence (inventory stored there) creates nexus in most states. You must collect and remit sales tax on sales into that state.
2) Economic nexus — what are the thresholds?
Most states: $100,000 in sales or 200 transactions. Some lower/higher — check each state.
3) Marketplace facilitator laws — do I still collect?
In many states, platforms (Amazon, Shopify Markets) collect/remit for you. Verify your setup and state rules.
4) When should I register in Q1?
As soon as you hit nexus (warehouse or sales threshold). Early registration prevents back taxes/penalties.
5) How often should I review nexus?
Monthly sales tracking + quarterly full review. Nexus can change fast with growth.
