E-commerce LLC compliance

The compliance burden for an e-commerce LLC has very little to do with the formation state. It has everything to do with where your customers are, where your inventory lives, and which marketplaces you sell on. This guide walks through the four obligations that catch e-commerce founders.

1. Sales tax nexus

Since the 2018 Wayfair ruling, states can require you to collect sales tax based on "economic nexus" · typically $100,000 in sales or 200 transactions per state, per year. Some states use lower thresholds, some have removed the transaction count, some have both. There are now 46 states with economic nexus statutes plus DC.

Practically: if your e-commerce store does serious volume, you will accrue sales tax obligations in multiple states within 12-18 months of launching. Track sales by state from day one. Register, collect, and remit when you cross each state's threshold.

2. Marketplace facilitator rules

Most states require Amazon, Etsy, eBay, Walmart Marketplace, and similar platforms to collect and remit sales tax on behalf of sellers. If 100% of your sales are through a marketplace that handles tax, you may have no collection obligation of your own · but you may still have a registration obligation in some states.

This is the gap that catches founders: marketplace tax handling does not always eliminate your need to register. Six states still want you on file even if Amazon is remitting.

3. Inventory location nexus

Amazon FBA in particular creates inventory nexus. If your goods are stored in an Amazon warehouse in Texas, you have physical nexus in Texas regardless of sales volume. Amazon's warehouse network spans 20+ states; FBA sellers often inadvertently create nexus across all of them.

Most FBA founders ignore this until their first multi-state sales tax audit. Better to register proactively in the states where Amazon stores your inventory.

4. Foreign qualification (the LLC kind)

If you operate out of a fulfillment center, warehouse, or office in a state other than your formation state, you generally need to register as a foreign LLC in that state. Costs $99 + state fee per state. Failure to register can void contracts and bar court access.

What we recommend for e-commerce LLCs

• Pick your home state for formation (where you live and operate).
• Use a sales tax automation tool from day one. Avalara, TaxJar, and Anrok are the leaders.
• Register for sales tax in states where you have physical nexus immediately.
• Register in states where you cross economic nexus thresholds within 30 days of crossing.
• Engage a CPA who specializes in multi-state sales tax. See our accountant directory.

Need help with this?

Our team handles formation, EIN, banking, and compliance across the situations described above. Our accountant directory has specialists for the tax side.