Selling on Amazon FBA: State Registration Requirements

Amazon FBA sellers do not have one nationwide sales tax registration. Registration is handled state by state, and the answer may depend on where inventory is stored, where the business has other connections, whether a state’s economic nexus rules apply, and whether every sale is handled by a qualifying marketplace facilitator.

Do not assume that Amazon’s collection of tax automatically eliminates every state registration or filing obligation. Start by identifying the states connected to your business and FBA inventory, then review each state revenue department’s rules. The IRS directs businesses seeking sales tax collection guidance to their state revenue department.

Amazon FBA registration quick facts

For a broader overview of how inventory and sales activity interact, see Sales Tax Rules for Amazon FBA Sellers. Sellers comparing individual jurisdictions can also use Sales Tax Registration Requirements by State Explained.

Who needs to examine state registration

An FBA seller should examine registration in every state where the business has a potentially relevant connection. That review is broader than simply checking the seller’s home state or the destination on a customer order.

Businesses with inventory in fulfillment centers

FBA inventory can be important because goods may be stored outside the seller’s home state. However, inventory does not produce identical consequences everywhere. A seller should identify known inventory locations and apply the law of each relevant state rather than treating one state’s rule as a national rule.

California provides a clear example. An out-of-state seller storing inventory at a California fulfillment center is considered engaged in business in California and is generally required to register with the California Department of Tax and Fee Administration and file sales and use tax returns.

California also illustrates why the exact account type should not be guessed. The CDTFA states that an out-of-state retailer without its own California location generally obtains a Certificate of Registration—Use Tax, while its online registration system determines the appropriate account.

Washington has its own approach. Marketplace sellers with physical-presence nexus must register with the Washington Department of Revenue even when they do not meet an economic threshold. These California and Washington rules are examples, not templates for every other state. For a state-focused inventory review, see Amazon FBA Sales Tax Nexus by State for 2026.

Remote sellers that may have economic nexus

Physical presence is not the only issue. In South Dakota v. Wayfair, the U.S. Supreme Court eliminated the constitutional rule requiring traditional physical presence before a state may impose sales tax collection duties. States must still establish their requirements under their own laws, so sellers need a state-by-state review of their sales activity.

Do not use a single remembered threshold for the entire country. Organize sales information by state, compare it with the current rules published by each state revenue department, and document the period and transactions included in the analysis.

Marketplace-only and multichannel sellers

A seller using only Amazon may reach a different result from a seller that also accepts orders through a company website, invoices, trade shows, or another marketplace. Separate marketplace-facilitated transactions from direct transactions before evaluating registration and collection responsibilities.

California has a marketplace-only exception: effective October 1, 2019, a seller whose retail merchandise sales are all facilitated by a marketplace facilitator registered with CDTFA is not required to register for a seller’s permit or Certificate of Registration—Use Tax. Marketplace sellers should retain documentation showing that the facilitator is registered and responsible for collecting and paying the tax, including the facilitator’s permit or account number.

Washington demonstrates why marketplace collection and registration must be evaluated separately. A seller making all retail sales through a marketplace facilitator does not collect and remit Washington retail sales tax when it has proof that the facilitator does so. Registration may nevertheless be required for other taxes when the seller has nexus, including business and occupation tax.

Preparation checklist for an FBA seller

Prepare a state review file before opening registration applications. A consistent file helps prevent contradictory answers and makes it easier to distinguish marketplace transactions from sales for which the seller may be responsible.

• Map business activity. List the business’s home location and other places where people, offices, property, or operating activity may connect the business to a state.
• Identify inventory locations. Gather the available FBA inventory and fulfillment information, organize it by state, and note the period covered by each report.
• Summarize sales by state. Separate marketplace-facilitated sales from direct or other-channel sales. Use consistent reporting periods so comparisons are meaningful.
• Review every sales channel. Include Amazon, the business’s own website, manual invoices, and any other marketplace. A marketplace-only exception may not fit a seller with direct sales.
• Collect facilitator documentation. Obtain state-appropriate evidence addressing the marketplace facilitator’s collection responsibility and registration status. Do not rely only on a general assumption about Amazon.
• Prepare business records. Keep the business’s legal identity, ownership information, addresses, start dates, and responsible-party details accessible for use when a state application requests them.
• Record the basis for each decision. Note whether the state review is based on inventory, other physical presence, economic activity, direct sales, or a marketplace-only rule.
• Check for existing accounts. Before creating a duplicate account, review prior registrations, correspondence, account numbers, and filings for the business.

The purpose of this checklist is not to decide every state result in advance. It is to assemble the facts needed to answer a state’s questions accurately and consistently.

How to approach the application process

1. Create a state-by-state review list. Begin with states connected to inventory, business operations, or substantial sales activity. Keep marketplace and non-marketplace sales visible as separate categories.
2. Consult the state revenue department. Review the current registration guidance for the specific tax and business activity involved. The IRS directs businesses seeking sales tax collection guidance to state revenue departments.
3. Determine whether an exception fits the full fact pattern. Confirm that the seller, marketplace, transactions, and time period satisfy every part of a marketplace-only rule. Do not apply California’s exception or Washington’s treatment to another state.
4. Select the state-directed account. Account names can differ. California, for example, states that its online system determines the appropriate account for an out-of-state retailer storing inventory at a fulfillment center.
5. Complete the application consistently. Match names, addresses, business activity descriptions, and start dates to the seller’s underlying records. Save the submitted information and confirmation for the compliance file.
6. Read the resulting state correspondence. Note the account type, filing expectations, and instructions assigned by the state. Do not assume that marketplace collection makes an issued account inactive.

There is no uniform national fee, form, deadline, portal, or processing time for this process. Verify those details directly with each state revenue agency rather than carrying information from one application into another.

Maintaining registrations and records

Registration is not the end of the review. FBA inventory placement, sales volume, sales channels, and business operations can change. Build a repeatable process for checking whether the facts used in the original analysis remain accurate.

• Monitor inventory geography. Retain periodic fulfillment reports and compare new inventory states with the existing registration list.
• Reconcile marketplace and direct sales. Keep each channel identifiable. This is especially important when a state’s exception applies only if all covered retail merchandise sales are facilitated by a qualifying marketplace facilitator.
• Preserve collection evidence. Keep marketplace reports and state-appropriate proof that supports the facilitator’s role. In California, the recommended documentation includes the facilitator’s permit or account number.
• Follow state account instructions. Once registered, use the filing directions associated with that account rather than assuming that no seller-collected tax means no filing is expected.
• Review other state obligations separately. A conclusion about marketplace sales tax collection does not by itself resolve other taxes or business registrations. Washington expressly warns that nexus can still require registration for other taxes even when the marketplace facilitator handles retail sales tax.
• Update the analysis after business changes. Revisit the states involved when the seller adds a direct website, enters another marketplace, changes its business structure, or begins operating from another location.

The most reliable approach is to treat Amazon FBA registration as a documented state-by-state compliance project. Inventory, economic activity, facilitator documentation, and non-Amazon sales should each be reviewed independently before deciding that registration is required—or that a marketplace exception applies.