Yes—in most states, marketplace sales still count toward your nexus threshold, even if the marketplace facilitator collects and remits the sales tax on those transactions. The key exception is that the exact treatment varies by state, so you cannot assume every state counts marketplace sales the same way; some states include them in the threshold and some do not.
For ecommerce sellers using Amazon, Etsy, Walmart, or a similar marketplace, the practical rule is this: track marketplace-facilitated sales and your direct sales separately, then check each state’s nexus rule before deciding whether you must register. Marketplace collection usually changes *who remits tax on the sale*, but it does not automatically eliminate your own registration or filing obligations if you have economic nexus or physical nexus in that state.
Key takeaways
- Marketplace sales often count toward nexus thresholds, but not in every state.
- Marketplace collection of tax does not always remove your registration obligation.
- Economic nexus is sales-based; physical nexus is presence-based.
- Track marketplace, direct, and exempt sales separately by state.
- If you crossed a threshold late, confirm the crossing date and fix the filing gap quickly.
How nexus thresholds work
Nexus is the connection between your business and a state that gives the state the right to require you to register, collect, and remit sales tax. In practice, sellers usually run into two forms of nexus: physical nexus, which comes from a tangible presence such as inventory, an office, employees, or similar in-state activity, and economic nexus, which is based on your sales volume or transaction count into the state.
Economic nexus thresholds are state-specific, so the exact trigger depends on the state. Some states use a dollar threshold, some use a transaction threshold, and some use both. For ecommerce sellers, that means you must look at the state rule itself rather than assuming one national standard applies.
When we help sellers review nexus, we usually separate the numbers into direct sales, marketplace-facilitated sales, and exempt or wholesale sales, because states do not always treat those buckets the same way. That is why a clean monthly or quarterly review matters more than a year-end snapshot.
Do marketplace sales count toward nexus thresholds?
Often yes, but not always. In many states, marketplace-facilitated sales count toward the seller’s economic nexus threshold even when the marketplace collects and remits the tax on the transaction.
That said, the state rule controls. Some states include marketplace sales in the seller’s threshold calculation, while others exclude sales handled by a registered marketplace facilitator. Because of that split, you should never assume that Amazon, Etsy, or Walmart sales are ignored for nexus purposes just because the marketplace handled the tax.
The safest approach is to treat marketplace revenue as potentially threshold-relevant until you confirm the state’s position. That is especially important if your direct-store sales are close to the threshold and your marketplace volume may be pushing you over the line.
How marketplace facilitator rules affect nexus
Marketplace facilitator rules mainly answer who collects and remits tax on the transaction. In a marketplace-facilitated sale, the platform typically handles the tax collection role for the sale it facilitates, but that does not automatically erase the seller’s own nexus exposure.
Those rules can also affect whether the marketplace sales themselves count toward the seller’s threshold. In some states, they do; in others, they do not. So marketplace facilitator rules and nexus rules must be read together, not separately.
This is where sellers get tripped up: a marketplace may be collecting perfectly, yet the seller can still have an independent obligation to register because the seller crossed an economic threshold or has physical nexus from inventory or other in-state presence.
Economic nexus vs. physical nexus
Economic nexus is based on sales activity into a state. Physical nexus is based on physical presence in the state, such as inventory stored there, an office, employees, or other tangible in-state operations.
The difference matters because marketplace collection only addresses the tax on marketplace-facilitated sales. It does not remove physical nexus created by inventory in a fulfillment center or other in-state assets, and it does not necessarily remove economic nexus created by your sales volume.
For Amazon FBA sellers in particular, inventory stored in a state can create physical nexus even if the sales occur through a marketplace. For Shopify sellers, the issue is usually economic nexus from direct sales, but physical nexus can still arise from inventory, events, or other activities in the state.
Which states count marketplace sales differently?
There is no single national rule. The available official-state-by-state structure shows that marketplace sales are treated differently across states, which is why a state-by-state review is necessary before you decide whether a threshold has been crossed.
Some state rules include facilitator-sold transactions in the seller’s threshold calculation, while other states exclude those transactions because the marketplace is already responsible for collection. The result is that two sellers with identical sales totals can have different nexus outcomes depending on the state and the mix of marketplace versus direct sales.
If you sell into multiple states, use a state-by-state threshold review such as your economic nexus thresholds chart, and then compare it with each state’s marketplace facilitator rule. For sellers outside the U.S., the same caution applies when reviewing your international seller nexus exposure.
How to track marketplace and direct sales
Track your sales in separate buckets for each state: marketplace-facilitated gross sales, direct store sales, and exempt or wholesale sales. That structure makes it much easier to see whether the state counts all gross sales or only taxable retail sales toward the threshold.
Gross sales usually matter more than taxable sales for nexus testing. In many states, the threshold is based on gross receipts or gross sales, which can include exempt and wholesale transactions, rather than only the tax you actually collected.
From a compliance standpoint, the goal is to know your position before you cross the line, not after. A monthly review by state, channel, and sale type is the simplest way to avoid missing the first month you should have registered.
When you still need to register
You may still need to register even if the marketplace collects the tax. That can happen when you have economic nexus, when you have physical nexus, or when the state requires registration for sellers with in-state economic activity regardless of who remits the marketplace tax.
Marketplace collection is not the same as marketplace filing for the seller. In some states, the seller still has to register or file returns, even if the marketplace is collecting on the marketplace transactions themselves.
If you are not sure whether your state requires registration after marketplace collection begins, the right next step is a state-specific review. We can check the rule for you and confirm whether your marketplace activity creates a filing obligation.
Who files and remits tax on marketplace sales
On marketplace-facilitated sales, the marketplace facilitator generally collects and remits the sales tax on the transaction it facilitates.
But that does not necessarily mean the seller has no responsibility at all. A seller may still need to register, file returns, report marketplace sales, or handle tax on non-marketplace sales depending on the state’s rule and the seller’s broader nexus profile.
That distinction matters because many sellers assume “the marketplace handled it” equals “I’m done.” In reality, the seller’s own obligations may continue for direct sales, inventory-based nexus, or state-specific reporting rules.
What happens if you cross a threshold late
If you crossed a threshold months ago, the first priority is to stop guessing and determine the date you actually crossed it. Once that date is known, you can assess whether registration should have started earlier and whether any returns or back filings are needed.
States can treat the period between crossing a threshold and the point when collection begins differently, so the exact position depends on your circumstances and the state involved. If you discover the issue late, the safest move is to review the sales history promptly and register or file as required rather than waiting for the problem to grow.
When a seller is already late, the issue is usually not just future compliance. The state may expect prior-period filings, and the remedy often depends on the state’s lookback rules, your sales mix, and whether the missed obligation came from marketplace sales, direct sales, or physical nexus.
Not sure how this applies to your business? We handle US sales tax registration, filing and remittance for ecommerce sellers as a fully managed service, for one fee. Book a free consultation and we will review your own position with you.
How marketplace sales usually affect nexus analysis
| Issue | What usually happens | What you should verify |
|---|---|---|
| Marketplace sales in the threshold | Often count toward economic nexus in many states | Whether the state includes facilitator sales in the seller threshold |
| Marketplace collects the tax | Does not automatically remove your registration duty | Whether the state still requires seller registration or filing |
| Direct store sales | Usually count if the state uses gross sales or taxable sales tests | Whether the state counts gross, taxable, exempt, or wholesale sales |
| Inventory in a state | Can create physical nexus even without high sales volume | Whether any inventory is stored in that state |
| Late threshold crossing | May create back filing or retroactive registration issues | The exact crossing date and the state’s lookback and filing rules |
Frequently asked questions
Do sales made through a marketplace facilitator count toward my nexus threshold?
In many states, yes, marketplace-facilitated sales count toward the seller’s nexus threshold even when the marketplace collects and remits tax. In other states, those sales are excluded from the seller’s threshold calculation. The state rule controls, so the answer must be checked state by state.
Do marketplace sales count toward economic nexus in every state?
No. Marketplace sales count toward economic nexus in many states, but not all states treat them the same way. Some states include them in the seller’s threshold and some exclude them when the facilitator is already responsible for collection.
If the marketplace collects tax, do I still need to register?
Possibly yes. Marketplace collection does not automatically eliminate registration, especially if you have physical nexus or if the state still requires seller registration once economic nexus is met. The requirement depends on the state and your facts.
What is the difference between economic nexus and physical nexus?
Economic nexus is triggered by sales volume or transaction count into a state. Physical nexus is triggered by a real in-state presence, such as inventory, an office, employees, or property. A business can have either one, or both, in the same state.
How do I track marketplace and direct sales for nexus purposes?
Track marketplace-facilitated gross sales, direct sales, and exempt or wholesale sales separately for each state. That makes it easier to see whether the state uses gross sales, taxable sales, or a transaction count test. Monthly tracking is better than trying to reconstruct the numbers later.
What happens if I crossed a threshold months ago?
You should determine the exact date you crossed the threshold and then review whether registration or filing should have started earlier. If you are late, the state may expect back filings or other corrective steps. The best move is to fix the issue promptly rather than wait.
Do Amazon, Etsy, and Walmart marketplace sales count the same way?
Not automatically. The marketplace platform may be different, but the state rule decides whether facilitated sales count toward your threshold. Amazon, Etsy, and Walmart can all be treated differently depending on the state’s marketplace facilitator and nexus rules.
Which sales count toward nexus thresholds: gross sales, taxable sales, or exempt sales?
That depends on the state. Many states use gross sales or gross receipts, which can include exempt and wholesale sales, while other states may use a different measure. You should confirm the state’s rule before relying on a single number.
Related reading
- Economic Nexus Thresholds by State 2026
- Economic Nexus Thresholds for International Sellers
- Economic nexus in Arizona
- Economic nexus in California
- Our sales tax compliance services
Getting this handled
If you would rather not work this out yourself, that is what we do. We register you, file your returns and keep you compliant across every state where you have an obligation — one point of contact, one invoice. Talk to us about your situation.
Reviewed by Paul le Roux, CA(SA). Sales Tax Compliance USA handles US sales tax registration, filing and remittance for cross-border and domestic ecommerce sellers as a fully managed service.
This article is general information for educational purposes and does not constitute legal or tax advice. Sales tax rules change and depend on your specific facts. Consult a qualified tax professional about your own position.
