Do Sales Through Amazon Count Toward Economic Nexus?

Yes, sales made through Amazon may count toward a state’s economic nexus threshold—but the answer depends on that state’s calculation rules. Some states include marketplace-facilitated sales when measuring a seller’s total activity. Others exclude sales covered by a marketplace facilitator and look primarily at the seller’s direct, non-marketplace sales. A marketplace’s responsibility to collect tax does not necessarily mean the underlying sale disappears from the seller’s nexus calculation.

This distinction matters because “Does Amazon collect the tax?” and “Do Amazon sales count toward my threshold?” are separate questions. Sellers should review each destination state’s current rules, compare those rules with sales by channel, and determine whether registration is required even when the marketplace handles tax collection. If registration is necessary, the relevant sales tax application information can help identify the appropriate state filing path.

Marketplace Collection and Economic Nexus Are Different

Economic nexus generally concerns whether a seller’s level of business activity in a state creates a sales tax obligation without relying on traditional physical presence. Thresholds are set individually by each state and are reviewed periodically. The measurement may consider sales, gross receipts, transaction categories, a particular lookback period, or a combination of state-defined factors.

Marketplace-facilitator rules address a different issue: who must collect and remit tax on a marketplace transaction. When Amazon facilitates a sale and is treated as the retailer or collector under the applicable state rule, Amazon may handle the tax on that transaction. That collection arrangement does not, by itself, answer whether the sale counts when the seller measures economic nexus.

There are therefore three separate questions to evaluate:

• Does the state include marketplace-facilitated sales in its economic nexus calculation?
• Has the seller crossed the applicable threshold or established nexus another way?
• If nexus exists, must the seller register, file returns, or collect tax on sales made outside the marketplace?

A seller can receive different answers to those questions in the same state. For example, marketplace sales might count toward a threshold even though the facilitator collects tax on those sales. Registration may then depend on whether the state provides an exception for sellers whose in-state sales are entirely marketplace-facilitated.

How State Treatment of Amazon Sales Can Differ

There is no single nationwide calculation that sellers can apply to every state. California, Washington, and Florida illustrate materially different approaches. These examples are useful for understanding the issue, but they should not be treated as a substitute for checking every state where customers receive products.

California includes marketplace-facilitated sales

California’s $500,000 economic nexus threshold for tangible merchandise delivered in the state includes the retailer’s marketplace-facilitated sales and sales of related persons. The threshold applies to the preceding or current calendar year. Consequently, a retailer cannot evaluate California nexus by looking only at sales made through its own website.

California also separates the threshold calculation from the registration outcome. A seller that exceeds the threshold must register with the California Department of Tax and Fee Administration unless all of its California sales are facilitated by marketplace facilitators treated as retailers for those sales. The registration documents identified by CDTFA are a seller’s permit and a Certificate of Registration – Use Tax.

Washington uses combined gross receipts

Effective January 1, 2020, a remote marketplace seller without physical-presence nexus must register in Washington if it has more than $100,000 in combined gross receipts sourced or attributed to Washington in the current or prior year. The calculation includes retail sales made through facilitators, direct sales, exempt sales, and other Washington income.

Washington also demonstrates why sellers must test physical presence independently. A marketplace seller with physical presence must register with the Washington Department of Revenue even when it is below the economic threshold. If the seller makes all retail sales through a facilitator, it does not need to collect Washington retail sales tax when it has proof that the facilitator collects the tax.

Florida excludes certified marketplace sales from the test

Florida takes a different approach for the specified marketplace-seller registration test. Effective July 1, 2021, an out-of-state marketplace seller must register online as a dealer when its taxable remote Florida sales outside the marketplace exceed $100,000 in the previous calendar year. Sales covered by a marketplace provider’s certification are excluded from that test.

The practical lesson is that a nationwide Amazon sales total is not enough. The seller must determine which transactions each state includes and then apply that state’s measurement period and threshold. For a broader comparison of these differences, see how economic nexus thresholds differ between states.

When Amazon Sales May Trigger or Affect Registration

Start by separating threshold measurement from registration. If a state includes marketplace sales, those transactions may push the seller over its economic threshold even if Amazon collected tax on every marketplace order. The next question is whether the state requires registration from a marketplace-only seller or provides an exception.

A mixed-channel seller needs particular care. Suppose a business sells through Amazon and through its own website. In a state that includes both channels in the threshold calculation, Amazon orders may help establish nexus, while the seller remains responsible for evaluating collection on its direct sales. In a state that excludes properly documented marketplace transactions, the registration test may instead depend on direct taxable remote sales.

Physical presence must also be evaluated separately from sales-volume thresholds. Inventory, personnel, property, or other in-state activities may require analysis even when economic sales are below a state’s threshold. Sellers using marketplace fulfillment should not assume that failing an economic nexus test ends the inquiry. The overview of physical presence nexus for sales tax explains why operational connections require a separate review.

Other nexus theories can also be distinct from both economic and physical presence. For example, referral arrangements may raise a different type of question addressed in the guide to click-through nexus. Sellers should avoid treating marketplace activity as the only possible connection with a state.

What Records to Have Ready

A reliable review starts with transaction-level information rather than a single total from an annual income statement. Organize records so sales can be tested under different state definitions without counting the same order twice.

• Sales by destination state: Use the location to which the product or transaction was sourced under the applicable state rule, rather than relying only on the seller’s business address.
• Marketplace and direct sales separated: Distinguish Amazon-facilitated orders from website, phone, wholesale, and other non-marketplace transactions.
• Gross and taxable amounts: Retain enough detail to apply rules that may refer to gross receipts, retail sales, taxable remote sales, exempt sales, or other categories.
• Current and prior-period reports: States can use different measurement periods. Preserve reports that allow activity to be reviewed under the applicable current and prior-period test.
• Marketplace collection evidence: Keep marketplace reports, agreements, certifications, or other records showing which party collected tax and which transactions were covered.
• Physical-presence information: Document inventory locations, personnel activity, property, fulfillment arrangements, and other operational contacts by state.
• Existing registrations: Maintain a list of active permits or registrations so the nexus review can be compared with current filing accounts.

Marketplace dashboards are useful, but they may not present data in the exact categories used by every state. Reconcile marketplace reports with accounting and order-management records, especially when orders are refunded, returned, exempt, or sold through more than one channel. The objective is to create a defensible state-by-state calculation while preserving the supporting records.

Obligations After Nexus or Registration

Crossing a threshold does not mean Amazon’s collection role transfers to the seller. For marketplace-facilitated transactions, collection generally remains governed by the state’s marketplace rules and the facilitator’s treatment of the sale. The seller’s direct transactions require a separate review.

After registration, a seller may have ongoing return-filing, payment, recordkeeping, and account-maintenance responsibilities. The details vary by state and by the registration issued. Some registered sellers may need to file returns even when the marketplace collected all tax for the period or when no seller-collected tax is due. Sellers should follow the filing frequency, due dates, and reporting instructions assigned by the relevant state revenue department.

Continue monitoring sales after the initial analysis. Channel mix can change: a marketplace-only seller may launch a direct website, enter wholesale relationships, store inventory in a new location, or begin other in-state activities. Likewise, state thresholds and administrative guidance can change. A periodic review should compare current business operations, marketplace documentation, direct sales, and existing registrations.

The safest conclusion is not that Amazon sales always count or never count. They count when the particular state’s threshold rule includes marketplace activity, and they may be excluded when the state’s rule specifically removes facilitator-covered sales. Economic nexus, physical presence, registration, and tax collection should each be tested as a separate question.